CN85101523A - Single pass slurry rejuvenation system and method - Google Patents
Single pass slurry rejuvenation system and method Download PDFInfo
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- CN85101523A CN85101523A CN85101523A CN85101523A CN85101523A CN 85101523 A CN85101523 A CN 85101523A CN 85101523 A CN85101523 A CN 85101523A CN 85101523 A CN85101523 A CN 85101523A CN 85101523 A CN85101523 A CN 85101523A
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Abstract
The present invention describes a method and apparatus for regenerating oil well drilling mud. The invention provides a filter belt without a seam, which is supported by a pair of cylinders spaced apart from each other and driven to rotate by power. The drilling mud is distributed at spaced locations to the moving section of the filter belt to form a layer of mud on the filter belt. The passage of the mud through the filter belt is aided by the action of injecting drilling mud (filtrate) into the drilling mud that has passed through the system and drawing it under the filter belt. The drilling mud is degassed in a second stage degasser after passing through the filter belt. The filter belt is changed into a clean filter belt by solution spraying, back flushing of air and water or diesel oil.
Description
The present invention introduces a kind of more method and apparatus of the drilling mud of oil generation well, gas well or other similar drilling wells that is used for.
Probing is during oil well, and drilling mud is pressed into boring casing, sprays to drill bit from sleeve pipe, and the outer wall of boring casing is upwards flow through in the space between sleeve pipe and drill hole wall then.The effect of boring dark mud is exactly that drilling cuttings is taken out of the pressure of ground, control formations drilled, lubricated boring casing and drill bit, and avoids subsiding of drill hole wall.Present drilling mud fusion various additives, to improve its performance.Because drilling mud has significant values, therefore best way reclaims and more living mud exactly, so that utilize again.The method of more living drilling mud comprises removing as drilling cuttings infiltrates mud particles.Term " solid particle " and " drilling cuttings " just are meant stone or the grogs that drill bit is got out hereinafter in the stratum.We know that it is extremely important that the quality of drilling mud maintains a good state, and infiltrates the stone grain in the mud, will produce deleterious effects to equipment, shorten the life-span of slush pump and other valuable equipments.And wish that additive that some are valuable such as barite etc. are unlikely and go out of use that gas that is mingled with and air can be eliminated basically, drilling mud is not diluted.Traditional way is to utilize to remove mud particles such as the device of classes such as vibrosieve, sand cleaning machine, sedimentation basin and centrifuge now.But also use degasser.
For drilling mud is worked effectively, must make it the physics and the chemical state that keep good.The size of drilling cuttings is very inconsistent, and big sheet bits diameter reaches 3/4 inch, and little then is very thin particulate.If allow big drilling cuttings be mixed in the mud, in drilling pipe, circulate, will stop up the passage and the boring casing of drill bit.Therefore, must from mud, clear out these big drilling cuttings.This point is easy to accomplish, mud is flow through from the coarse net vibrosieve, just can big sheet bits be separated.On the other hand, the more tiny drilling cuttings particulate in the mud is then removed not too easily, and these particulates can produce very deleterious effects in whole drilling process.Along with the increase of solid particle quantity, the penetration speed of drill bit will slow down (because to the unnecessary heavily brill of rock due to), and heavy wear can take place for drill bit and boring casing instrument, the effect of drilling mud itself seriously undermine and become uncontrollable.
Remove that a method than fine particles is exactly the whole mud of thin up in the mud.This way is not too practical usually, and almost spends very much.Under situations such as the mud amount of sorting is bigger, the required cost of the method for thin up is than higher, and at this moment, it is just more even more ideal generally can to adopt mechanical mode to handle, as remove the particle in the mud with methods such as screenings.But, when the hole of drilling surface (duct is than upper strata or more shallow part), also often utilize the method for thin up to reduce the content of solid particle in the mud.
At a kind of typical mud more in the generating apparatus, the drilling mud that flows out from drilling tool will the flow through device or the work station of 6 typings, they are: (1) vibrosieve; (2) degasser; (3) sand cleaning machine; (4) sedimentation basin; (5) mud cleaner; (6) centrifuge.Mud is sent in the vibrosieve at first, behind vibrosieve, bigger particle is separated, mud behind the sieve is sent in first jar then, then mud is pumped out from first jar, enter second jar through degasser, from second jar, pump again then, enter the 3rd jar through sand cleaning machine, after this, mud is pumped out again, flow through sedimentation basin or mud cleaner, the form of sedimentation basin or cleaner is a kind of revolving strainer or cleaner, similar sand cleaning machine, enter the 4th jar through the mud behind the sedimentation basin, and then from the 4th jar, be sent in the slurry tank.
Therefore, the transmission of mud is that batch-type ground carries out, and will mud be sent to another calibrator of equipment at least with the centrifugal pump of 3 power consumptions from a calibrator.Because the use of the calibrator that equipment is all is not a kind of continuous operation, therefore in whole slurry flows, in fact only some is through the processing of whole system.The cost of daily processing mud when the economy of mud system depends primarily on probing.Handle mud two kinds of approach-utilize chemical substance treatment and utilize plant equipment to handle are arranged.Why high the cost of daily processing mud is, and a chief reason is exactly that drilling cuttings (also claiming " solid particle ") is sneaked in the mud.Solid particle just fragments into more tiny particle at every turn by pump the time, and this just causes the heavy wear of pump, and the increase of fine particle, also makes the work of removing these particles more difficult.
When particulate dispersion is in whole drilling mud, will produce a lot of problems thereupon.Because the quantity of solid particle progressively increases along with the process of continuous probing, finally still must be handled these particles, the fine screening by in batches, remove sand, precipitation and centrifugal treating, remove these solid particles.The method of screening is carried out sizing screening to solid particle exactly, rejects the drilling cuttings particle greater than mesh.In addition, adopt other forms of device clear particle, efficient is just poor especially.In fact, be used for removing sand, the hydrocyclone of precipitation and operation such as centrifugal is not a kind of separator of stagewise.
The receptible practice is on the general industry, and to the permissible value of the solid particle of some specific sizes in the existing equipment regulation removing mud, but its removing percentage can not be higher than 50 percent.Have some mud disposal systems to adopt multiple device, in the hope of the amounts of particles in the mud is controlled on the lower ratio, but cost is then too high.
The deep-well of a standard of probing, the cost of mud is very high.Be 1500 dollars rent average every day of handling mud equipment, when drilling darker well, the rent of equipment sometimes every day above 2000 dollars.Desired power is 430 horsepowers to 450 horsepowers when pump in the equipment and calibrator running.What is more, and the assembling of equipment and the expense of pipe laying often equal to buy the price of entire equipment.This shows that the method for existing processing drilling mud not only function is not good enough, and also be a very heavy burden financially.The possessor advises handling drilling mud with simpler method and apparatus to the greatest extent, is exactly wherein a kind of as Mr. Li at the equipment described in the 4th, 350, No. 951 patents of the U.S., but this equipment does not have by anyone acceptance in fact in industrial quarters.This equipment uses a filter bag (this band is by the top of filtration garden tube), and utilizes several vibrating plates to contact with the mud of delivering to filter bag, forces mud to pass through the band that forms sediment.
Therefore, used up to now equipment all is that predetermined will the solution removed the mud particles problem, and the size of these particles is between about 1.5 microns to 0.75 inch.Be more living drilling mud effectively, full scale clearance solid particle wherein veritably, in addition, also must be maximum to the greatest extent may remove the gas that is mixed in the drilling mud.
So main purpose of the present invention is exactly to provide a kind of new, improved method and apparatus to handle drilling mud.
INVENTION IN GENERAL
The present invention is meant a kind of method and apparatus that is used for the drilling mud of more oil generation well, gas well or other types drilling well (abbreviating " well " later on as).The unique characteristics of the present invention are exactly: it is an one pass systems, and after drilling mud was discharged from well head, this system that flows through all circulated, the mud after the processing at any time again pump advance in the well.
This equipment has the weir that becomes a mandarin, the caused billow of mud that is used to admit the drilling mud of inflow and holds the equipment that flows to from rig.There is a collecting chamber on the weir that becomes a mandarin, and it has an overflow lip, and drilling mud flows through from overflow lip.Like this, compare with the turbulent mud in flowing into the weir, the mud that flows out outside the weir just becomes stratiform liquid stream.
The drilling mud that goes out from the weir flow that becomes a mandarin is sent to " rolling " distribution weir that is positioned at the distribution weir bottom, its effect is assigned to drilling mud on the moving filter bag assembly exactly, and this assembly is positioned on moving filter bag direction to be had on the position of certain intervals mutually.Because mud is transmitted with the curtain ribbon, flows on the filter bag assembly so mud is lamelliform.During mud was sent to the filter bag assembly, the gas that is mingled in the mud also was eliminated simultaneously effectively.Distribution weir preferably is made of a plurality of parallel cylinders, and these cylinders are driven on the same direction and roll.Cylinder can be divided into two groups, and first group at upstream end, and velocity of rotation is higher; Second group at downstream part, and rotating speed is lower.Between the axle of each cylinder same interval is arranged.The diameter of the normal cylinder of the diameter of one of them or more than one cylinder is little.Like this, the space between the cylinder of less diameter and the contiguous cylinder is corresponding bigger, and the gap between the normal cylinder of remaining diameter is then very little.So if slurry flows is out-of-date, few mud can flow through the space between the two normal diameter cylinders.Like this, mud just flows into the seam shape space between the contiguous normally cylinder of the less cylinder of diameter and diameter, forms the liquid stream of curtain band, and along the orbit of the filter bag that is driven, being attached on the filter bag, promptly is layer by layer slurry flows to be distributed and be transported on the filter bag.When the seam shape space of slurry flows through between cylinder, the air that is mixed in the mud also is removed simultaneously.
The filter bag assembly is the continuous band-shaped assembly that is made from multiple components.Its skin has a filter screen with very tiny grid, and this filter screen is made by class materials such as stainless steel, nylon; A support mesh is arranged below the outer filter, and it has thick grid, and is made by class materials such as stainless steels, is supporting outer filter.Whole filter bag assembly by rubber strip or similarly supporting strap supported, supporting strap is centered around on a pair of cylinder that certain intervals arranged each other.One of them cylinder is the idle running cylinder, and another then is the suction and pumping cylinder that drives for power.The vaccum bench that one supporting filter band is arranged between two cylinders, vaccum bench have a dish, and this dish is connected with sucking pump by the pipe-line system that is positioned under the dish.The reduction that reaches the vaccum bench downforce in the dish helps the suction and pumping drilling mud to make the flexible filter bag assembly of crossing.Vaccum bench or two parallel bars that separate are arranged, its top and supporting strap are fitted, and the cylinder that separates is perhaps arranged, and also fit with supporting strap.
So drilling mud can pass through filter bag, not only by means of the reduction of vaccum bench downforce, but also being put in role on the mud on the filter bag by means of F being injected in by distribution weir, used here " filtrate " speech is meant the drilling mud through present device.
Drilling mud is when the filter bag, and the drilling cuttings particle greater than the grid of fie screen in the mud just is eliminated out mud at the upper surface of strainer, meanwhile, mixes being clipped in formation in the mud and also being excluded than the gas of air pocket.The drilling cuttings particle of staying the upper surface of refined net filter screen is transported to row and unloads conveyer so that handle.Be mixed in that the gas than minute bubbles passes through filter bag with mud in the mud.These gases will really be removed in partial degasser up hill and dale.
First kind of embodiment of second level degasser has a pair of cylinder of being separated by and being parallel to each other, and cylinder is located at the bottom of dish, and dish then is positioned at the below of filter bag track, is parallel to each other with filter bag.Two cylinders are ordered about does the opposite rotation of direction, thereby forces drilling mud to move downward from dish.Be provided with sealing device between cylinder and the dish, make can only flow through narrow gap between two cylinders of mud or other materials, and can not flow through from other places.
Under the extruding of cylinder, spray on the chopping block that is positioned at cylinder below and stretches along cylinder, thus, removed the gas that is mixed in the mud.These gases are extracted out from the chamber at chopping block place by suction pipe.Mud has obtained more livingly in this way, has also just formed the sort of F that the front was once mentioned.Can spray this system by the spray pump through more living mud, as a kind of filtrate that plays a driving role that is injected on the filter bag; Also can utilize gravity to flow out this system automatically.
In second kind and the third embodiment, second level degasser has an outer cover, is a cover wall around in the cover, and a disk that horizontally rotates is substantially arranged in the wall.The top of disk is facing to the outlet opening of the dish under the vaccum bench, and the drilling mud by filter bag flows out from the outlet opening of this dish.Disk mud is got rid of to columned cover wall, thereby the gas that will be mingled in the drilling mud is separated by motor and transmission device driven rotary.Then, mud flows down along the cover wall, flows in the feeder.So the filtrate of these drilling muds is sent deaerator system by foregoing mode.The gas that is separated or extracted out outside the degasser cover of the second level by an independent pipeline, or be drawn out of by the outlet opening of dish.Among the embodiment therein, two such degassers have been used.
As previously mentioned, the filter bag assembly comprises the filter screen of refined net and supporting filter screen of the ring-type of a no interface, and the supporting filter screen set engages on supporting strap.Distributing on the ring-type refined net filter screen of the no interface tiny grid of go-no-go is to exclude mud particles.A supporting filter screen is arranged below this filter screen, and the intensity of supporting filter screen is fine, and the bore of grid is also more bigger.This two-layer filter screen links together by some longitudinally extending tapes, comprises a pair of sideband bar and a middle tape that is positioned at central authorities.These tapes are made for good with neoprene, tape is provided with the slit that vertically stretches, and the inner of seam is provided with hole.The edge of above-mentioned two-layer filter screen puts in slit and inserts hole in the seam, and by suitable mode, as glue etc. they is fixed on there.Supporting strap is located at the below of supporting filter screen, and with the upright oncus of going up fluted separation, these upright oncus stride across each hole in the groove, and each hole can make mud therefrom flow through.
After filtering the length of assembly by similar whole vaccum bench, all drilling muds are passed through the filter bag assembly by suction and pumping basically, and solid particle is isolated, and stays on the external surface of refined net filter screen.But need recognize that these solid particles may have the material that important value is arranged as barite one class, this class material should reclaim.In order to reclaim this class material effectively, should be immediately at the filter bag of suction and pumping garden tube place back flush solids laden.According to the characteristic of drilling mud, wash liquid can be water or diesel oil.This washing equals to have cut off " bridge ", and valuable particulate is entered in the suction and pumping cylinder.Yet wash liquid does not pass filter bag, has therefore avoided the dilution of drilling mud.Through the suction and pumping effect of the suction and pumping cylinder that filter assemblies passes through is arranged thereon, flushing liquor can be removed.Barite flows in the suction and pumping cylinder with wash liquid, but separated immediately and recovery.
The filter bag assembly is around the running of suction and pumping cylinder, and chip particles bigger on the strainer is dished out by centrifugal force, and is received by the system of a removal of contamination particle, and there is a helical conveyor in this system.The suction and pumping cylinder is contained on the axle of a hollow, can rotate.This suction and pumping cylinder has a cylinder, on many holes of running through are arranged.The external surface of cylinder is the flexible rubber of one deck, and filter bag and cylinder rubber external surface are fitted, and rubber surface also has many holes, aligns one by one with hole on the cylinder.Suction nozzle in the cylinder is connected with vacuum pump via quill shaft.Thus, suction nozzle can siphon away the wash liquid and any drilling mud that is retained on the filter bag that see through strainer.Remove any residual substance on the strainer whereby.The suction and pumping cylinder rotates under motor and transmission device drive, is provided with a baffle plate between quill shaft and the axle sleeve thereof, and is connected with cylinder, and therefore, the suction and pumping effect of suction and pumping cylinder only is created in the arc area of cylinder rotation.
When net-filter assembly and supporting strap left cylinder, they were separated from each other.One horizontal row is arranged to the nozzle of arranging on the filter screen,, and utilize high efficiency nozzle, it is further cleaned from the back under high pressure with the filtrate contrainjection filter screen of drilling mud.
The present invention has many advantages, and it utilizes the single treatment system and method for an one way that a kind of method for saving energy and equipment of more living drilling mud are provided.Under the situation that does not adopt the centrifugal pump that very consumes energy, all drilling muds all obtain handling, but also have saved lot of energy.Again and, owing to use centrifugal pump to go not pump the mud that those contain drilling cuttings, also can not make drilling cuttings be fragmented into more tiny particle, thereby also avoided removing these more difficulties of fine particle.(if not saying the words that to remove).The weir that becomes a mandarin has absorbed the billow of drilling mud, distribution weir then is assigned to mud on the strainer in the side of filter bag, so that utilize the area of filter bag more fully, and under the effect of strainer bottom suction, make drilling mud in the unit interval, pass through filter bag relatively largely.
Equipment of the present invention and method owing to utilize the thrust of injection filtrate and the suction of filter bag below, make drilling mud can promptly see through filter bag.
Distribution weir has been removed the portion gas in the mud; When mud passes filter bag under the effect of thrust and suction, both can remove solid particle, can remove other gases that are mingled in the mud again; Remaining gas is then removed in the degasser of the second level basically fully.This shows that native system and method have reached the purpose that gas is removed fully basically from drilling mud.
Except above-mentioned advantage, this equipment and method also have other significant advantage that is better than existing equipment.These advantages are: removed fully in the drilling mud that does not load (barite) and be coarser than the solid particle of No. 400 grids, and loaded the solid particle that is coarser than No. 190 grids in the mud; Pay off except the mud that contains particulate of not loading or the cotton-shaped particulate in the liquid.The drilling cuttings particle that quilt row unloads is loaded with the expensive material as barite one class, and this class thing also is cleaned out, refills in the drilling mud by recovery.Need the particular processing technology although be used for the system of handling oil fundamental mode mud in the look-ahead technique, this Apparatus and method for does not need the particular processing technology and equipment for this class mud.This equipment performance is reliable, the maintenance that need not to continue, inspection or often continuous adjustment.
Extremely important advantage of the present invention is exactly to compare with traditional equipment, and its equipment energy needed only is 1/3rd of a legacy equipment.
The more living mud that this equipment and method are produced needs less dilution water or oil to control its viscosity.This more clean more living mud will provide the wall cake that more high-quality is thinner for drill hole wall.
The more living mud that this equipment of utilization and method are produced, by downhole motor or turbine, drilling results is more superior.And the cost of more living mud is also lower.After utilizing aforesaid equipment and method to remove particle in the mud, reduce the wearing and tearing of pump and drill bit the application life of having improved pump, improved the lubricating condition of boring, improved the drilling rate of drill bit.
Utilize disclosed method and apparatus can reduce the cost that builds up drilling well significantly, for deep-well and the more mine of problem, its cost that builds up is lower more than 25 percent than the shaft building cost of now used equipment and method.
The simple declaration of accompanying drawing
Fig. 1 adopts oil well drilling operation schematic diagram of the present invention;
Fig. 2 shows the phantom drawing (wherein having part to be removed) of the more living system of mud of the present invention;
Fig. 3 is the more living system side view of mud of the present invention (wherein part is removed);
The plan view of the more living system of Fig. 4 mud;
Fig. 5 A and 5B are the sectional drawings on the 5A-B-5A-B line among Fig. 4;
Fig. 6 is the view of gained on the 6-6 line among Fig. 5 B;
Fig. 7 is the sectional drawing on the 7-7 line among Fig. 6;
Fig. 8 is the sectional drawing on the 8-8 line among Fig. 7;
Fig. 9 is the sectional drawing on the 9-9 line among Fig. 8;
Figure 10 is the sectional drawing on the 10-10 line among Fig. 5 B;
Figure 11 is the sectional drawing on the 11-11 line among Fig. 5 A;
Figure 12 is the sectional drawing on the 12-12 line among Fig. 5 A;
Figure 13 is the sectional drawing on the 13-13 line among Figure 12;
Figure 14 is the decomposition diagram of part among Figure 12;
Figure 15 is the sectional drawing on the 15-15 line among Fig. 4;
Figure 16 is the sectional drawing on the 16-16 line among Figure 15;
Figure 17 is the sectional drawing on the 17-17 line among Figure 15;
Figure 18 is decomposition, perspective and the sectional drawing that constitutes the filter bag of a part of the present invention;
Figure 19 is the sectional drawing on the 19-19 line among Figure 18;
Figure 20 is the sectional drawing on the 20-20 line among Figure 19;
Figure 21 is the sectional drawing on the 21-21 line among Figure 20;
Figure 22 is the lateral view of a change embodiment of the more living system of mud of the present invention;
Figure 23 is the plan view (wherein part is removed) of the change embodiment among Figure 22;
Figure 24 A-B is the sectional drawing on the 24-A-B line among Figure 23;
Figure 25 is a decomposition diagram of forming the cylinder platform of the more living system of the mud part among Figure 22;
Figure 26 is the sectional drawing on the 26-26 line among Figure 25;
Figure 27 is the sectional drawing on the 27-27 line among Figure 24 A;
Figure 28 is the sectional drawing on the 28-28 line among Figure 27;
Figure 29 is the sectional drawing on the 29-29 line among Figure 28;
Figure 30 is the sectional drawing on the 30-30 line among Figure 24 A;
Figure 31 is a width of cloth schematic flow sheet, has shown that the suction and pumping cylinder among three embodiment of the present invention is drawn after the barite bar way of recycling;
Figure 32 is the side view of third embodiment of the invention;
Figure 33 is the plan view from above of embodiment shown in Figure 32;
Figure 34 is the sectional drawing on the 34-34 line among Figure 32;
Figure 35 is the sectional drawing on the 35-35 line among Figure 34;
Figure 36 is the sectional drawing on the 36-36 line among Figure 35;
The working of an invention mode
With description of drawings the present invention, the numeral that is marked in these views is all represented similar or corresponding parts now.Figure 1 shows that typical oil well rig.Comprise: drilling pipe D; Drill bit B; Swivel joint S; Vertical tube SP is used for mud is sent to drilling pipe D, and drilling mud pumps from pump P, arrives drilling pipe D through vertical tube SP; Mud is then stored among the slurry tank MT.Drilling mud is as mode before, and D flows downward by drilling pipe, flows out from the hole of drill bit B, returns along the upper reaches, lateral of drilling pipe then.All mud that return from shaft bottom stream all flow into the more generating apparatus 10 of the present invention and carry out more living processing, make it to be returned to original state.More generating apparatus 10 has outwardly directed stack 11, refuse and drilling cuttings delivery pipe 12 and more living mud tube or filtrate pipe 13.Delivery pipe 12 enters waste reservoir with refuse, and filtrate pipe 13 then will be processed the mud of handling and inject slurry tank MT.
Mud more generating apparatus 10 is handled the mud that pumps from boring, and the proportion of mud is that wherein solid particle accounts for the 2%-5% of its capacity between the per gallon 8.5-18 pound.Solid particle is rock or the grogs (drilling cuttings) that grinds or shred, and its bore is between 1.5 microns to 1/2 inch.Equipment 10 of the present invention can be removed mud particles and any gas that is mingled with, and more living fully mud makes it to be returned to the original state of pump before the down-hole.
Fig. 2 has described more generating apparatus 10 of mud of the present invention in more detail.Equipment 10 has one to anticipate device 100, and this device has the distribution weir 120 of become a mandarin a weir case 110 and a rolling.The weir case 110 that becomes a mandarin generally is used to receive drilling mud, and discharges by weir mouth 112, and mud is by in pipe 14 input magazines 110, and case is provided with and covers 111, and its position as shown in Figure 2.This case can absorb and admit input caused any billow during mud, and with slurry transportation on rolling distribution weir 120.
In addition, also be provided with a vacuum system 500, filtrate removal system 530 and solid particle removal system 550.Whole system makes mud all keep motion state in the overall process of its processing, thereby avoided the stagnation of mud in processing procedure, and this stagnation can cause precipitation or the segregation of heavier particle in fluid in the mud, has also avoided the restriction or the retardation that produce in the equipment simultaneously.
Mud in the well is by pipeline 14(Fig. 4) be sent to mud more in the generating apparatus 10, pipeline 14 ends at the family of power and influence 15, and at the family of power and influence 15 upstream end, links to each other with an erect riser 16, and the weir case 110 that becomes a mandarin is stretched in the upper end of standpipe, and is attached thereto.Standpipe 16 upwards stretches from pipeline 14, and enters the lower end of the weir case 110 that becomes a mandarin.The left side of standpipe 16 is the parts of vacuum system 500, comprises driving the first vacuum pump 502(and seeing Fig. 4) motor 501 and drive the motor 504 of second vacuum pump.These motors and pump all are positioned at the below of the weir case 110 that becomes a mandarin, and the inlet of vacuum pump 503 links to each other with pipeline 510, and the inlet of vacuum pump 502 also links to each other with pipeline 520 similarly (Fig. 4).As shown in Figure 3, pipeline 510 is connected with pipe box 511.511 protract to cylinder transmission case 330, and 330 in case of reversing is by pillar 22 supportings.Pipe box 511 also is by pillar 22 supportings, and at its opposite one end, then by pillar 23 supportings.Pipe box 511 also plays a part supporting vaccum bench 260.Fig. 3 chain-dotted line partly illustrates and covers 17, has covered gas outlet 18, is connected with stack 11 shown in Figure 1.Pipeline 520 is connected with pipe box 511a, also similarly by pillar 24 on the filter bag assembly opposite side and 25 supportings.
Fig. 4 has shown the general construction of present device, and the pillar 24 and 25 on the organic block parts 21 wherein is with pillar 22 and 23 supporting cylinders 300 and 400.As seen from the figure, the weir case 110 that becomes a mandarin stretches above distribution weir 120.Fig. 2 and Fig. 4 have clearly illustrated solid particle scavenge system 550, and it has a CD-ROM drive motor deceleration transmission assembly 551, and it is connected with helical conveyor 552 in the groove 553, and drives its running.Groove 553 connecting pipes 554,554 then are connected with drilling cuttings delivery pipe 12.As shown in Figure 4, pipeline 554 passes the support component 20 of hollow.
The weir case 110 that becomes a mandarin has acclivitous diapire 111(Fig. 5 B).Therefore, it is darker than its port of export that the weir case 110 that becomes a mandarin is positioned at the arrival end of standpipe 16 tops, and the port of export is positioned on the edge mouth 112 on this weir.Above inclined floor 111, cover plate 113 and sidewall 114 etc. are arranged, thereby constitute the whole weir 110 that becomes a mandarin.As shown in Figure 2, the become a mandarin port of export of weir case 110 is positioned at the top of distribution weir 120.The turbulent drilling mud that the weir admittance that becomes a mandarin flows into from standpipe 16.The weir case 110 that becomes a mandarin because its volume and capacity are bigger, so played the billow of the mud that buffering flows into, when mud flows out by mouth 112, is laminar flow basically.
A plurality of weirs that be parallel to each other, power-actuated cylinder 130,131 stretches between the both sides of the bogie side frame 122 of mounting 121.Cylinder 130 lateral extensometers are crossed filter bag assembly 201.All distribution weir cylinders are all made same direction and are rotated under the driving of gear, gear is then driven by motor 132 and 132a.The output shaft of motor 132 is connected with gear-box 135; Motor 132a connects transmission device 133a, and the output shaft 134a of transmission device 133a then is connected with gear-box 135.The cylinder 130 of distribution weir big or small identical, each is parallel mutually, and it is closeer to be separated by.Therefore, few mud passes the gap between the two adjacent cylinders.Yet shown in Fig. 5 B, distribution weir 120 also has the cylinder 130 of diameter less than cylinder 130, apart certain intervals.Because the distance between cylinder 130 and the 131 all axles all is identical, so the space between the two adjacent cylinders 130 is wider than in the space between the cylinder 131 of minor diameter and the adjacent cylinder 130.Therefore, the drilling mud that gathers on cylinder 130 and 131 tops will become the apart banded liquid stream 150,151,152,153,154 and 155 of curtain to wander downwards in the slit.Drilling mud just can be removed by the space between distribution weir 120 cylinders and be mingled in all bigger bubbles in the mud, and for example diameter is the air pocket more than 1/4th inches and 1/4th inches.In addition, the particle that some are bigger can not be by the space between the adjacent roller as shale, dry ball clay etc., but is taken away by driven cylinder 130 and 131, by the tail end of distribution weir 120, drops into the upper surface of filter bag assembly 201.
The filter bag assembly is a continuous endless belt, walks around cylinder 300 and 400, its up section below that is positioned at rolling distribution weir 120.Shown in Fig. 5 A and 5B, cylinder 300 and 400 rotates by the direction shown in the arrow on it, so up section also motion from right to left thereupon of filter bag assembly 201.Up in addition section is acclivitous on the direction of cylinder 400 to 300.The actual motion speed of filter bag assembly 201 is 300 to 500 feet of per minutes.Continuous annular filter bag assembly 201 is ingredients of degasser-filter bag device 200.Device 200 also includes apart lateral support struts 261.Cramp bar 261 is ingredients of vaccum bench 260, and vaccum bench 260 has sidewall 280 and 282, and up section of filter bag assembly 201 is moved between this two side.Shown in Fig. 5 B, the cross section of cramp bar 261 is triangular in shape basically, and a rib wherein is at the top.Pass the drilling mud of filter bag assembly 201, fall and pass the interval between the bar 261 too, flow in the chamber 262, the part of chamber 262 is separated by dish 263.
Pipeline 512 stretches out from pipe box 511 and 511a, and is communicated with the aperture of coiling in 263.Pipeline 512 final and vacuum pump 502 and 503 connections make that the pressure in the chamber 262 maintain subatmospheric level.Low pressure in the chamber 262 help suction and pumping mud to make it pass filter bag assembly 201 because before this, mud curtain band 150-155 layer by layer cloth on filter bag assembly 201.For impelling drilling mud to pass filter bag assembly 201, at the nozzle 265 that between the banded liquid stream 151 and 152 of the curtain of mud, is provided with a horizontally-arranged, equally, also be provided with row's nozzle 266 between the curtain band 154 and 153, under pressure, supply with " filtrate ", that is be through the more living drilling mud of device 10 to these nozzles.These nozzles directly are ejected into filtrate downwards on the stratiform drilling mud that has been stored on the filter bag assembly 201, force mud to pass filter bag assembly 201.And, being attached to mud on the solid particle or useful component and then being rinsed and separating, solid particle is still stayed on the filter bag assembly 201.Utilize nozzle 265 and 266 to spray filtrate, the effect that mud is washed or impacts, to reclaim more mud exactly, if those bigger solid particles that can not pass the filter bag assembly are just drained without flushing, mud that these particle surfaces are accompanying and useful composition may be discharged from together with particle.
Drilling mud is to pass through filter bag assembly 201 above the whole length of room 262, when a certain specific part operation of filter bag assembly 201 near near the left end of the dish 263 of cylinder 300 time, all drilling muds will see through filter bag assembly 201 and in the inlet chamber 262 basically.Certainly, there are some filtrates also can stay above the filter bag assembly 201 and the inside.
To contain some remaining gas and/or air from the drilling mud that distribution weir 120 is sent, these gases and air are distributed in the mud with the bubble that varies in size.When mud passes through filter bag assembly 201, will further remove those greater than the gas in the bubble of the grid bore of filter screen 220.Like this, filter bag assembly 201 has not only play a part to separate solid particle in the mud, but also plays a part first order mud degasser.Second level degasser is positioned at the bottom of chamber 262, is provided with a pair of cylinder that is parallel to each other 250 and 250a.There is one second dish portion 264 below of cylinder 250 and 250a, and a groove 270 is arranged at the bottom of dish.
Chamber 262 near the part of cylinder 300 above, have a horizontal row to see Fig. 5 A to the nozzle 267(that arranges), its effect is to clean any filtrate that remains on the filter bag assembly.The filtrate of drilling mud is aqua type, and then a spot of water of nozzle 267 injections cleans, and the filtrate of drilling mud is oil type, then sprays diesel oil and cleans.Washing or oil wash (depending on the circumstances), can strip the utility that the solid particles surface on the strainer assembly 201 is being attached too, have only a spot of flow of liquor to enter the room in 262, therefore, the dilute strength of the mud of more being given birth to is to drop to minimum limit.Wash liquid on filter bag assembly 201 and any dissolved material are aspirated by the suction and pumping device when filter bag assembly pile warp suction and pumping cylinder 300 and see through filter bag assembly 201, all are eliminated out filter bag assembly 201.Shown in Fig. 5 A, the suction and pumping device comprises the pipe 309 that is stated from the suction and pumping cylinder 300.Material by suction and pumping and by filter bag assembly 201 enters suction and pumping cylinder 300, enters an eliminator that is connected with vacuum plant again and realizes recycling (narration is hereinafter arranged in addition) to solid matter.Because these solid matters mainly are the barite particulates, so be furnished with special these the valuable barite materials that reclaim of device.Wash liquid can reclaim and reuse, and also can drain.
When filter bag 201 was walked around the curved surfaces part of cylinder 300 with the bigger drilling cuttings particle of staying its up section upper surface, drilling cuttings was drained from power, entered aforesaid solid particle row unloading system 550.
Shown in Fig. 5 A, be provided with a guide rail 202 below the suction and pumping cylinder 300, on roller 202a is arranged, the filter screen 220 and 222 of filter bag assembly is walked around this roller operation.As seen from the figure, filter screen 220 and 222 has left after the periphery of suction and pumping cylinders, basically be vertically to move downwards, and supporting strap 230 is except being a section of level substantially, then continue to be fitted in the periphery of suction and pumping cylinder 300, this shows that filter screen 220 separates with supporting strap 230 by this way with 222. Filter screen 220 and 222 moves on, and sees Fig. 5 B by other guide wheels 203(that is located at the permanent position) the top, and then by being provided with the pivot guide rail 204 of roller 204a.Guide rail 204 is a pivoted with axle 205, and pivot 205 is across the orbit of crossing filter bag 201.Governing mechanism of tension 206 is used to control the rotation of guide rail 204 on pivot 205, thereby has regulated the tension force on the filter screen 220 and 222.
When filter screen 220 1 breaks away from suction and pumping cylinder 300, just be subjected to the flushing dorsad of row nozzle 210 sprays a water or a diesel oil and the injection dorsad of the high-speed gas that gas jets 207 is under high pressure sprayed immediately.Like this, any particle that is attached to the filter bag assembly all is eliminated and falls into particulate emission system 550, subsequently, when filter screen is walked around roller 202a on the guide rail 202, filter screen 220 is subjected to being contained in the water that one on pipeline 208a row nozzle 208 sprayed or the further flushing dorsad of diesel oil once more, to remove any solid particle that still remains on the filter screen 220.The liquid that nozzle 208 is sprayed, flow in the chamber 209 together downwards in company with the solid particle (will reach minimum) that falls by filtrate spray, be provided with water jet pump in 209, the nozzle of this pump is 211, the liquid that the liquid that sprays is still sprayed for nozzle 208, this pump also has a delivery pipe 212, and it leads to gatherer.The flushing successively of filter screen 220 process air nozzles 207 and nozzle 208, and after suction drums 300 its solid particles of removing, when filter bag assembly 201 runs to idle running cylinder 400, be cleaned clean basically.So the filter bag assembly of this cleaning is handled again under the condition of cleaning treatment that optimum carries out repetition.
As previously mentioned, distribution weir has diameter bigger cylinder 130 and the less cylinder 131 of diameter, and all cylinders 130 and 131 all rotate on same direction.Have only the mud of minute quantity can be by the narrow gap between two adjacent larger-diameter cylinders, the banded liquid stream of the curtain as thin as a wafer among Fig. 7 shown in 156 be exactly the example of an explanation.Clearly, have only the superfine little particulate in the mud can be, and bigger particulate can only be by than the space between the cylinder 131 of minor diameter and the adjacent larger-diameter cylinder 130 by the slit between the adjacent cylinder 130.This has just formed the banded liquid stream 150,151,152,153,154 and 155 of curtain of drilling mud.All mud that are sent to distribution weir 120 all will pass these spaces basically.The one material seeding version 147 that laterally stretches is arranged below cylinder 130 and 131, be inverted V-arrangement shape, play a part support, and be used for side direction and distribute mud.One or more such material seeding versions 147 are set, so that after passing the space of distributing between the cylinder 130 and 131 at mud, side direction is disseminated mud.
The cylinder 130 and 131 of distribution weir has metal inner core 136 and overcoat 137 that polytetrafluoroethylene (PTFE) elastic-like materials such as (teflons) is made of a garden cylindricality.As shown in Figure 8, metal-cored 136 and overcoat 137 usefulness lateral pins 138 link together.There is keyway 139 each metal-cored end, key 140 and these metal-cored linking together, thus also be linked together with cylinder 130 and 131, with bolster 141.As shown in Figure 8, the right-hand member of every bolster 141 all is bearing in 142 li on the bearing of sidewall 122, axle 141 left end then is bearing in 143 li on the bearing of sidewall 123, and by key gear 144 is fixed on this bolster 141, and gear 144 is meshing with each other with idler gear 145.Cover plate 146 topped the outer end of gear-box, and provide the support of bearing for the outer end of axle 141.
Axle 134(sees Fig. 6) drive one group of gear 144 and 145, axle 134a then drives another group gear 144 and 145.The rotating speed of axle 134 preferably is higher than the rotating speed of a 134a, and like this, the first set of dispense weir cylinder 130 on the right and 131 rotating speed just are higher than the second set of dispense weir cylinder 130 on the left side and 131 rotating speed (seeing Fig. 5 B).
Nozzle sets 265 and 266 is injected filtrate under pressure, and under strong high pressure filtrate is sprayed downwards, penetrates the upper surface at refined net filter screen 220.Supporting strap 230 is fitted on the cramp bar 261 of vaccum bench 260 and with it.Bar 261 is isolated mutually by passage 261a, and drilling mud is then by in these passage inlet chambers 262.
Article one, bypass channel 160(sees Figure 10) be located at by the side of contiguous filter bag 201 drilling mud that reception may be overflowed from filter bag assembly 201.Groove 160 links to each other with a suitable pump, and this pump can be transported to the weir that becomes a mandarin to overflow mud again and circulate again, in addition, if any parts of the more living system 10 of mud break down, also can drain mud with this pump in case of necessity.
That second level degasser has is parallel, motor-driven cylinder 250 and 250a, and shown in arrow among the figure, they make counter-rotation.Shown in Fig. 5 A, cylinder 250 and 250a are that this transmission device is commonly referred to as 251 in the drive underdrive of motor actuator.
Sealing device 252 is located at cylinder 250,250a and is fixed between the block 253 on two walls of dish portion 264, walks around cylinder 250 and 250a to prevent material.The below in the space between cylinder 250 and the 250a is provided with an inverted flat V-shape anvil plate 254, is used to accept by cylinder 250 and 250a push and the drilling mud of ejection, and air or gas are separated from drilling mud.From extracting out the chamber 255 down, chamber 255 is by cylinder 250 by pipeline 256 for air that these are separated or gas, 250a, and block 253 and dish portion 264 limit jointly and form enclosure space, and pipeline 256 then links to each other with pipeline 512 by reducing valve 257.
Fig. 5 A and 11 has described the Kai Ding chamber cover 209 between support component 20 and 21, and 201 of filter bag assemblies are positioned at this top, chamber.208 pressure filtrates of being come from this line transportation by pipeline 208a supporting and acceptance of nozzle so that filtrate is sprayed on the filter bag assembly 201, are passed this filter bag assembly, the chamber 209 of inlet chamber cover 209 ' in.Chamber 209 ' two nozzles of being separated by are arranged, ejection filtrate enters delivery pipe 212, and this delivery pipe links to each other with filtrate pipe 13.
Suction and pumping cylinder 300 and installation thereof are shown in Fig. 5 A, 12,13 and 14.As shown in figure 12, suction and pumping cylinder 300 has two side 301 and 302, and this side wall supports cylinder 303, and this cylindrical external surface is surrounded by one deck elastic cylindrical shape rubber face 304.Supporting strap 230 is bearing on this elastic rubber layer 304, and is installed with a lot of holes 238, and hole 238 aligns with all grooves 306 of the arc on the layer 304.Radially hole 306a is communicated with the radially hole on groove 306 and the cylinder 303 307.On the direction that axially stretches of the inner surface of cylinder 303, be fixed with many intake nozzles 308 that extend axially, each vacuum noz(zle) all is covered with a plurality of holes 307.Suction pipe 309 links to each other with each vacuum noz(zle) 308.As shown in figure 12, also be provided with one deck central dividing plate 310 in the suction and pumping cylinder 300, have a plurality of suitable holes 311 on the plate, so that some suction pipes 309 pass this dividing plate.
As shown in figure 12, the suction and pumping cylinder is rotated by bearing 316 and 317 by 315 supportings of fixing quill shaft.Cover 318 embeds bearing 316, and by being bolted on the sidewall 301; Cover 319 embeds bearing 317, and by on the sidewall 302 that is bolted to cylinder 300.Sleeve 320(being housed on the central dividing plate 310 seeing Figure 14) periphery of socket has a plurality of holes 321, and suction pipe 309 stretches into this hole 321, thus with the internal communication of sleeve 320.Sleeve 320 for example is fixed on the central dividing plate 310 with welding, with axle 315 certain space that is separated by, and around this axle rotation.Sleeve 320 is with sealing device 322, its for example by screw on sleeve, the sealing device is sealed and matched with the external surface of axle 315.Axle has a hole 325 on 315, is communicated with space between sleeve 320 and dividing plate 310 and the sealing device 322, for providing continuous fluid passage between the interior space of the inside of axle 315 and sleeve 320.Shown in Fig. 5 A and 14, axle 315 is provided with sealing plate 326 and 327.Sealing plate 326 and 327 forms the chamber 328 that annular stretches, and its space is by the part of sleeve 320 inwalls, and the inner surface of the inner surface of central dividing plate 310 and sealing device 322 limits.Like this, from Fig. 5 A as seen, when suction and pumping cylinder 300 rotates, article one, suction pipe 309 is tending towards vertical direction, the inner of this suction pipe is by baffle plate 326, thus with the internal communication of axle 315, the inside of axle 315 then links to each other with low-voltage vacuum, suction pipe 309 remains to this pipe with being communicated with of axle 315 inside always and forwards to below the horizontal level, produces till the scope of the chamber 328 that is limited by baffle plate 327.Like this, when suction and pumping cylinder 300 rotation during, just can play suction and pumping by a qualification regional.Therefore, be stated from mud on the filter bag assembly 201 and other any bores material enough little, that can pass refined net filter screen 220 meshes, just can pass filter bag assembly 201 under the injection of nozzle 267 and under the suction and pumping of cylinder.
Suction and pumping cylinder 300 is driven by transmission device 331, and it places in the outer cover 330, and this transmission device has an output shaft 332 to 330 of outer covers by pillar 22 supportings, and this axle is connected with a flange 333, and this flange links to each other with cylindrical wall 301 again.This structure support an end of fixed axis 315, and just rotatable by bearing 316 cylinders 300, transmission device 331 then plays a part rotation.As shown in Figure 3, motor 332 is connected with belt pulley 335 by driving- belt 334, and 335 of belt pulleys are connected with transmission device 331.
As read shown in 13 and 14, the outer cover 340 of a hollow is arranged on the pillar 24, a notch 341 is arranged in the cover, it is the york piece 342 of U type substantially that this notch is accepted one, bearing sleeve 343 is welded in this york piece, has hole 344 in this sleeve pipe.Key 345 stretches in bearing sleeve 343 and an end of axle 315.Have some holes 329 on axle this end of 315 of 343 fits of sleeve, as can be seen from Fig. 13, this hole 329 is connected with hole 344 on the bearing sleeve.Like this, these holes make the inside of outer cover 340 and the internal communication of axle 315.As shown in figure 13, outer cover 340 has a baffle plate 359, and the inside of this cover and the inside of pipe yoke 511a are separated.But, 360 of outlets on this outer cover are connected with the vacuum source that will narrate.
Figure 15 shows that pipe yoke 511a and the subtube 514 that upwards stretches thereof, this subtube is positioned on the swash plate 515.The end of swash plate 515 sealed tube yoke 511a.Form chamber 516 thus, this indoor tension-adjusting gear 410 that is provided with.Chamber 516 is linking end plate 517, has window 518 on this end plate, and a pair of guide rod that outwards stretches 519 and 521 perpendicular to this plate is housed.The bearing device 420 that can move as straight line is used to support an end of the axle 401 of idle running cylinder 400, and this supporting arrangement 420 also is provided with a pair of bearing support 421 that has bearing 422, can lay guide rod 519 and 521 in it.Know demonstration as Figure 17, be with an axle sleeve 432 on the axle 401, this axle sleeve is connected with 434 with the sidewall 433 of supporting arrangement 420.
As shown in figure 17, can make axially movable bar 411 and be attached on the pillar 412 of bearing device 420 for one of pressure-regulating device 410 by bolt 413.Like this, by adjusting the pressure of tension-adjusting gear 410, just can make bearing device 420 and axle 401 do horizontal slip, thereby make filter bag assembly 201 keep suitable tension force.Axle 401 the other end also supports in the same way and regulates, and comprises bearing device 420 ' and tension-adjusting gear 410 ' (see figure 3).
Tension-adjusting gear 410 and 410 ' available any known devices constitutes, and makes filter bag assembly 201 keep suitable tension force when work, leaves enough slacknesses simultaneously, so that dismantle filter bag assembly 201 and supporting strap 230 when needed.
Figure 18 shows that refined net filter screen 220, it is an ingredient of filter bag assembly 201.Filter bag assembly 201 is divided into two lattice by the supporting tape 228 of centre, and first lattice are 201A, and second lattice are 201B.As previously mentioned, the filter bag assembly is made of the supporting coarse strainer 222 of outer field refined net strainer 220 and internal layer.When being loaded with barite in the drilling mud, using specification is the refined net filter screen 220 of " 187 grid "; When not loading barite in the mud, then using specification is the refined net filter screen 220 of " 325 grid ".The supporting filter screen 222 of internal layer is the stainless steel filtering net of specification " 18 grid ", and its effect is the mechanical strength that strengthens filter screen 223.
The strainer assembly be provided with sideband bar 225 and 225 ', all have a narrow slit 226 and the duct 226a that bore is bigger on each tape, the glue in the duct clings the edge of filter screen 220 and 222.Sideband bar 225 and 225 ' also have intilted surperficial 227.The filter bag assembly is provided with intermediate support tape 228, and the filter bag assembly is divided into two lattice, and lattice 201A and 201B, its structure and sideband bar roughly the same have the surperficial 229a and the 229b of inclination.
As shown in figure 18, there are protrusion 231 and 231a in the more inner place of two outward flanges of supporting strap 230, thereby makes two edges form flange 232 and 232a.The surface 233 of protrusion 231 coincide mutually with the surface 227 of sideband bar 225, and is same, and the protrusion 231a at another edge of supporting strap also fits mutually with the surface of another side tape.Equally also there are protrusion 234 and 234a(in the centre of supporting strap 230 referring to Figure 19), also equally with 231a on vertical total length of supporting strap, stretch with the protrusion 231 at edge.The surface 235 of protrusion 234 and 234a and 235b also fit with the surperficial 229a and the 229b of middle tape 228.By above-mentioned protrusion and surface engagement system, 230 pairs of filter screens 220 of supporting strap have played a guiding and a supporting role reliably.
In addition, as shown in figure 21, supporting strap 230 has the spine 236 of a lot of protuberances, across crossing this supporting strap.The belt body 237 that stretches and be higher than supporting strap that spine 236 makes progress, thus transverse groove lattice very a large amount of, that be used to admit mud formed.These groove lattice have a plurality of holes 238, run through the belt body 237 of supporting strap 230, so that a large amount of drilling muds that are stated from the supporting strap 230 pass supporting strap at high speed.This point is for will being very important with being stated from that whole drilling muds on the supporting strap 230 remove basically on very short range ability.As shown in Figure 4, in order to increase the intensity of supporting strap again, supporting strap 230 has central authorities that stretch to lead rib 239 downwards, cooperatively interacts with the groove 305 that stretches on suction and pumping cylinder 300 peripheries.
Figure 22 to Figure 30 has disclosed second embodiment of the more living system of mud of the present invention, is commonly referred to as 2-10.When describing second embodiment, for the parts different with the parts of first embodiment, its label all adds a prefix label " 2 ".Shown in Figure 24 b, pretreatment unit 2-100 has the weir case 2-110 that becomes a mandarin, this case have upwards stretch out have a flange go into to manage 2-115, the weir wall 2-116 that becomes a mandarin in addition, this wall have one to go up weir mouth 2-112.Weir mouth 2-112 is positioned at the roof 2-117 below of the weir case that becomes a mandarin, at intervals.Thus, form a passage above the mouth 2-112 of weir and between the roof, the drilling mud that flows into the weir case from hydraulic fill pipeline 2-14 can flow out through this passage.Like this, be exactly a container with the weir tank wall 2-116 that becomes a mandarin for the weir case that becomes a mandarin of its ingredient, it plays a part to admit mud and its billow of buffering.
The degassing-filter 2-200(is referring to Figure 23) a vaccum bench 2-260 is arranged, this vaccum bench is provided with the cylinder 2-261 that is parallel to each other and is separated by, and its gap is 2-261a.Cylinder 2-261 is supporting the filter bag assembly 201 and the supporting strap 230 of continuous no interface, and the gap 2-261a between cylinder then makes the drilling mud that has passed filter bag assembly 201 and supporting strap 230 can flow into the dish 2-274 and the 2-277 of cylinder 2-261 below.Shown in Figure 24 A and 24B, cylinder 2-261 is positioned at up section below of filter bag assembly 201, stretches along its track, and is supporting this filter assemblies and hanging down moving to reduce the abrasion and the resistance of filter bag assembly of friction.Equally, in Figure 24 A and 24B, supporting strap 230 turns round with lower speed, and is supported by a series cylinder 2-240, to reduce its abrasion and friction.
Vaccum bench 2-260 wherein has the cylinder 2-261 that keeps certain intervals each other as shown in figure 25, and there is axis 2-282 at the middle part of cylinder, and two ends are large diameter end 2-281.The end 2-281 that increases is made on core by the jacket casing that elastic-like materials such as polytetrafluoroethylene (PTFE) (teflon), rubber are made.As shown in figure 26, axle 2-282 is a hollow.The sleeve that elastomeric material is made be provided with a space to inner end positions, the rib 239(that leads that is used to engage supporting strap 230 sees Figure 19).As shown in figure 26, each end of quill shaft 2-282 is provided with bearing 2-283.The external surface of bearing is fitted with the inner surface of axle 2-282, and axle head 2-284 stretches out from the inner surface of bearing, topped a coating 2-284a on it.Nut 2-285 is spun on the end of axle head 2-284.Article one, longitudinally extending supporting rail 2-286 is located at each side of vaccum bench 2-260, and stick 2-286a is housed on the supporting rail, is fixed on this supporting rail by cap screw 2-286b.A plate 2-287 is welded on the supporting rail 2-286, along having notch 2-287a on the position of this plate certain intervals downwards.As shown in figure 25, the size of this notch can be held and coupling nut 2-285.There is a dividing plate 2-289 inboard of plate 2-287, and this dividing plate just has hole every certain interval, is used to accept the thread head 2-284 and topped thereon the coating 2-284a of axle head.
Supporting rail 2-286 and piece plate 2-286a have utilized the mechanism in the look-ahead technique to form being arranged in parallel that both sides are separated by, and link together by horizontal parts 2-288, and axle 2-284 passes the hole on the dividing plate 289, are about to cylinder 2-261 and load onto.This mechanism is fixed into a kind of relation of combination with each parts, and nut 2-285 enters in notch 2-287a and the piece plate 287, just the combination of vaccum bench 2-260 thus, can have been finished in cylinder 2-262 and two dividing plate 2-289 permanent positions.
A mud outlet opening 275 is arranged at the bottom of dish 2-274, wherein is provided with the dividing plate 2-276 that vertically stretches, and the enclosure space in the dish 2-274 is separated into four cells.As shown in figure 27, there is a delivery pipe 2-512 to enter in each cell, and links to each other with 511a with the pipe box 511 at two ends.Each bar pipeline 2-512 has a mesopore under shed, and pipe box 512a then is contained in this pore place.
The second dish 2-277 is provided with an outlet opening 2-278 at it too than lower part, with dividing plate 2-279 the chamber of coiling is separated into cell too.Like this, the dish chamber that forms just is separated into some cells by 5 dividing plate 2-279 by the part of dish 2-277, and delivery pipe 2-512 couples together each cell and pipe box 511 and 511a.
A second level degasser device 2-290 is positioned at the below of each outlet opening 2-275 and 2-278.The structure of each second level degasser is identical, and an outer cover 2-291 is all respectively arranged, and rotating disk 2-292 is arranged in the cover.This rotating disk is driven by gear-box 2-293, and this gear-box is then supported by pillar 2-294.Outer cover 2-291 is that part is columniform, and the cover wall of rotating disk periphery is columniform, and is coniform to next, leads to a groove 2-295.Drilling mud is injected in rotating circular disk near the status at center, and this impact has disengaged the gas in the tiny bubble.Mud is layered on the disk of rotation as a thin paper, and this state also helps disengaging of gas.And this mud dished out by centrifugal force, spatters on the wall of outer cover 2-291, and this impact impels the gas that at this moment may also remain in the mud further to disengage.
Change now and see Figure 27, the figure illustrates the filter bag assembly 201 that is supported by cylinder 2-261, it comprises refined net filter screen 220 and supporting strap 230.As shown in the figure, a dividing plate 2-279 has a lower edge 279a.Rotating disk 2-292 and gear-box 2-293 are positioned at the below of outlet opening 2-278, and this gear-box is driven by axle 2-296 by motor driving group.In the chamber of dish 2-277, visible 4 pipeline 2-512 are inserted in the suction cover 2-512a that is arranged in central authorities, and pipeline 2-512 is connected with pipe box 511 and 511a.Second level degasser 2-290 is communicated with by outlet opening 2-278 with dish 2-274 and 2-277 because whenever drilling mud does not all fill with outlet opening 2-278, also with regard to can not the closed disk chamber and second level degasser between passage.Drilling mud is under the ordering about of the centrifugal force of rotating circular disk 2-292, splash is on the cylindrical wall of second level degasser 2-290, gas is separated from mud, when if the gas that disengages significantly raises the air pressure in the degasser 2-290 of the second level, gas can form the drilling mud effusion that bigger bubble passes the outlet opening 2-278 that flows through; Also can adopt the similar way of in first embodiment, using pipeline 256, make it the arbitrary pipe box among second level degasser and pipe box 511 and the 511a or two pipe boxes are connected, reach the purpose of gas being discharged second level degasser.
Groove 2-295 collects the drilling mud that has outgased, and this groove is communicated with discharge pipe 2-270, and this discharge pipe then is the ingredient of filtrate scavenge system 2-530; Can understand that each second level degasser 2-290 has a discharge pipe 2-270 to draw.These discharge pipes will merge together, and more living drilling mud is transported to slurry tank.Preferably utilize the action of gravity of more living mud itself to make it to flow through the pipeline of filtrate scavenge system, but also can select to use the filtrate nozzle that mud is flowed out.
Figure 28 and 29 has shown the end of a typical suction pipe 2-512, and this end is loaded onto a flange 2-520, and this flange links together by bolt 2-521 and second flange 2-522.Flange 2-522 is connected with short tube 2-523, and this short tube then is communicated with pipe box 511a.One orifice plate 2-525 is arranged between flange 2-520 and the 2-522, have an eyelet 2-526 on this plate, this eyelet limits its size of area of section of fluid of flowing through.Selecting orifice plate 2-525 and eyelet 2-526 is the cross-sectional area that is used for determining the fluid of a certain specific pipeline 2-512; In each bar pipeline 2-512, use the orifice plate 2-525 of the eyelet 2-526 with different bores, just can determine the flow rate of liquid of desired each pipeline 2-512 that flows through.The other end of pipeline 2-512 also is furnished with same device, and this end is connected with pipe box 511.
Shown in Figure 30 is suction and pumping cylinder 300, and this cylinder has sidewall 2-301,2-302 and a central dividing plate 2-310.Bothrium 2-308a passes the periphery of this central dividing plate, and each bar bothrium all links to each other with a suction pipe parts 2-309.Bothrium 2-308b does not pass central dividing plate 310, but links to each other with suction pipe parts 2-309b similarly yet.Like this, these suction pipes are just stretched more directly than the suction pipe in the example shown in Figure 12, do not pass central dividing plate 2-310 because these suction pipes resemble the suction pipe in first example.
The supporting strap 2-230 of filter bag assembly 201 and the supporting strap 230 in first example also have difference: the both sides of supporting strap 2-230 all respectively have 6 hole 2-232; Suction and pumping cylinder 2-300 also has and above-mentioned hole hole 2-306 radially accordingly towards the top layer 2-304 of supporting strap 2-230, this radially hole be connected with the deep-slotted chip breaker 2-306a that stretches on the cylinder circumference.Shown in Figure 24 A, the common shape triangular in shape of the cross section of each bar bothrium 2-308.
Please note Figure 32 to Figure 36, these figure have shown the 3rd embodiment of the present invention.In this example, used a bigger single rotating disk degasser.The vaccum bench of this example be by one stretch in the trough slab 600 of whole cylinders 602 belows surround 602 target phases that supporting filter bag assembly 201 of cylinder.Embodiment shown in Figure 32 waits in fact is identical on all details with the example shown in Figure 22 waits, but an exception is arranged, and that is exactly the degasser of accepting mud that is positioned at cylinder 602 belows.Shown in Figure 35 and 36, the profile of trough slab 600 comprises lateral frame piece 6-286 and the tail frame parts 6-288 that stretches along the vaccum bench both sides.As shown in figure 34, the left end of trough slab 600 stretches out a groove T who stretches downwards, this groove is placed restrictions on by the diapire 604 of a Y shape structure, and the periphery of Y type groove is surrounded by first and second sidewalls 606 and 608, splay end wall 610 and wall 612,614,616,618,620,622,624 and 626.As can be seen, wall 612,614,616 and 618 has surrounded one first letdown tank 630, and this letdown tank has an outlet limit 631; Wall 620,622,624 and 626 has then surrounded one second letdown tank 632, and this letdown tank has an outlet limit 633.Shown in Figure 33 and 35, diapire 604 is provided with adjustable valving V
1, V
2And V
3In addition, trough slab 600 is provided with three horizontal letdown tanks 640.
Figure 33 is a plan view from above.As seen from the figure, the periphery of a degasser cover 650 is an octagon structure, is attached on the trough slab 600.A degasser traffic cycle 652 is arranged in the cover, be contained on the axle 655.This axle sleeve can know that from Figure 36 the lower end of seeing this is driven by driving belt 662 by motor actuator 660 in sealing cover 654.
Figure 33 and 36 has clearly illustrated that suction pipe 670 has ingate 672, and these suction pipes stretch in the degasser cover 650, and as shown in figure 33, adapter sleeve and the pipe box 511 or the 511a connection of blown tubular then passed through in the outer end of this suction pipe.Thereby the same low-pressure state that is in the space of trough slab 600 tops in the inside of degasser cover 650 is because the inside of the space of trough slab 600 tops and degasser cover 650 is to interconnect by the hole on slit 640 and the edge 631,633.In the time of if desired, can control valve V
1, V
2And V
3, make atmosphere enter the left side of groove T to reduce the vacuum (these cylinders are arranged in the left side of Figure 35) of downstream roller 602 belows.Should be noted that in most of the cases, drilling mud had passed the filter bag assembly and flowed away before the cylinder that arrives the left side, therefore the filter bag of walking does not need too high vacuum on this section.
The running of example illustrated such as Figure 32 is identical with the running of second example basically.Comparatively specifically in this example, mud passes the filter bag assembly, falls trough slab 600, and to advance with its left end from this plate current be the groove or the discharge slot 640 of starting point, downwards through 631 and 633 grooves 630,632 of flowing through, falls on the rotating disk 652 then.Should be noted that, if need valve V
1Deng structure can make specialized designs, make when ventilating air continues to flow into valve, can prevent that mud from flowing out from this valve.Impact on rotating disk 652 from the mud of groove 630,632 and slit 640 outflows, played degasification to a certain degree, mud is got rid of on the cylindric perisporium 653 of degasser fiercely by rotating disk then, further and more up hill and dale gas is separated from mud, then, flowed down by the mud that outgased skew wall along degasser cover 650, to discharge outside the degasser, the effect that preferably utilizes gravity by pipeline 695 with slurry transportation in slurry tank MT.If desired, can be at filtrate nozzle of the local assembling of pipeline 695 or other, to produce necessary pump action, with slurry transportation in slurry tank.
Shown in Figure 31 is a cyclone separator 700, links to each other with pipeline 351, is used to receive by the material of suction and pumping by suction and pumping cylinder 300, contains barite in these materials, may also have some other material that important economic worth is arranged.One pipeline 720 links to each other cyclone separator 700 with second eliminator 740.This second eliminator then is connected with a vacuum source by pipeline 750.Pipeline 750 can link to each other with the degasser outer cover of any evacuation, for example links to each other with outer cover 650.In some cases, pipeline 351 can be walked around cyclone separator and/or eliminator 740, takes back in the degasser.
Undoubtedly, for being familiar with those skilled in the art, a large amount of technology alterations and improvement can appear in the shown several embodiment of the present invention; But should understand that the spirit and scope of the present invention then only limit to the content described in the claim.
Therefore, can see from all above-mentioned embodiment that the present invention is compared with the mud disposal system known in the past, and is more economical and practical, and effect is also more superior. For example, the present invention does not need to use the centrifugal pump that needs the sort of power consumption used in traditional mud disposal system fully, thereby has reached the effect of saving. The energy of wanting required for the present invention is markedly inferior to now other known mud disposal systems. In addition, owing to do not re-use centrifugal pump or other mechanical pumps come pumping to contain the mud of drilling cuttings, can also obtain further benefit. These characteristics of the present invention have avoided drilling cuttings to split broken tiny particulate, and will remove this from mud Grain is very difficult or impossible slightly. The present invention has also avoided the wearing and tearing that cause to pump because pumping contains the mud of drilling cuttings. In fact, system of the present invention only need with a mechanical pump, be used for the slush pump after more living to the down-hole. Because more living mud does not contain drilling cuttings, therefore pump there is not bad effect.
Another benefit of the present invention is exactly mud by in the each time circulation of native system, is all cleaned up hill and dale. In whole drilling process, the work of native system is successional, so just can effectively save and finish needed probing time of a bite well and cost. Another important feature of the present invention is exactly the quick operation of filter bag assembly. The filter bag speed of service is very important for the effect of filtering, and the running speed of filter bag assembly increases, and the particulate that then bore is littler just can pass the filter bag assembly. Therefore, under some working condition, in order accurately to control the state of mud, can change the speed of service of filter bag. The increase of the filter bag speed of service can increase the flow of slurry flows per minute, meanwhile, reduced the bore of particulate that can be by filter screen.
Compare with the equipment in the look-ahead technique, another significant difference part of the present invention is: in the present invention, value product passes filter screen and separates; And in other filter operation, value product then is retained on the surface of filter screen. Therefore, filter operation of the present invention just is opposite with the operation of previously known filtration system.
And an important difference of the mud disposal system in the present invention and the look-ahead technique is: the present invention is fully more living with mud, makes it to be returned to original state. Traditional mud disposal system is the more unboiled water standard that impossible reach such, therefore under many circumstances, all will control mud with additive, tries hard to make it to maintain the most satisfied state, to satisfy the needs of probing.
Claims (104)
1, the equipment that is used for the more living drilling mud that flows back to from oil well is by forming with the lower part:
(a). be used to filter the filter of mud, this device is made of the filter that moves of a no interface;
(b). the drilling mud that is used for containing drilling cuttings is placed on the cross feed device on this filter;
(c). be used for the suction and pumping drilling mud and pass this filter, make this drilling cuttings isolate this drilling mud, thereby make the suction and pumping device of more living mud;
(d). be used to receive the receiving system that is passed this more living mud of this filter by suction and pumping;
(e). be used for more living mud is sent to from this receiving system the conveyer of the device of reusing this more living mud.
2, in the described equipment of claim 1, this filter has a pair of cylinder this moving filter device, apart certain intervals that is used to support.
3, in the described equipment of claim 1, this mud cross feed device has the weir device that becomes a mandarin.
4, in the described equipment of claim 3, this weir device that becomes a mandarin has a case, and this case has a darker arrival end, and more shallow outlet and one are inclined upwardly from the arrival end to the port of export in the bottom of horizontal plane.
5, in the described equipment of claim 3, this weir device that becomes a mandarin has a case, this case defines a chamber, there are a roof and a wall that laterally stretches substantially in this chamber, this position separated by a certain interval, roof below has one to go up the weir mouth, there is a port of export on this weir that becomes a mandarin, is used for the mud that discharge stream is crossed this weir mouth.
6, in the described equipment of claim 3, this mud cross feed device is positioned at the distribution weir device of this weir port of export below that becomes a mandarin in addition, is used to receive the drilling mud that goes out from the weir flow that becomes a mandarin and with slurry transportation position separated by a certain interval to this filter.
7, in the described equipment of claim 6, this distribution weir device has a mounting, and this mounting has the axle of both sides, a plurality of weir cylinders that stretch across this mounting and these a plurality of cylinders; These axles at grade and each interval identical, and in these a plurality of cylinders, have the diameter of the diameter of a cylinder at least less than other cylinders, make the less cylinder of this diameter be adjacent space between the cylinder greater than the space between other cylinders.
8, the described equipment of claim 7 makes the drum drive that this weir cylinder rotates in addition on same direction.
9, in the described equipment of claim 8, this drum drive has weir drum shaft and the gear on this.
10, in the described equipment of claim 9, this drum drive has makes first group of weir cylinder with the device of first speed rotation and the device that second group of weir cylinder rotated with second speed.
11, the described equipment of claim 6 also has spray nozzle device, and this device sprays to filtrate under pressure by this distribution weir device and is transported to mud on this filter.
12, in the described equipment of claim 11, this filter has a mobile filter bag assembly to be installed in a pair ofly to be used to support this and to move cylinder strainer, apart certain intervals, this distribution weir device is positioned at the place of contiguous first cylinder, the Washing spray nozzle device is positioned at the place of contiguous second cylinder, and this spray nozzle device is used for wash fluid is sprayed to the material that this moving filter band assembly is carried.
13, the described mud of claim 1 is more in the generating apparatus, this mud cross feed device has a distribution weir device, this distribution weir device has one group of cylinder parallel to each other and separated by a certain interval, each cylinder is all across the moving track of this filter, the arrangement that stretches along the top of this filter of this group weir cylinder, make this drilling mud pass the space between the weir cylinder of this distribution weir device, fall on this filter.
14, in the described equipment of claim 13, in this weir cylinder, the space between some cylinders is greater than the space between other cylinders.
15, in the described equipment of claim 14, the interval between the axle of this weir cylinder is all identical, and has at least the diameter of the diameter of a cylinder and other cylinders inequality.
16, the described equipment of claim 14 drives the drum drive that this weir cylinder rotates in addition on same direction.
17, in the described equipment of claim 16, the drum drive that this head roll rotates has at least a part to place reception from the position of the mud that contains drilling cuttings of drilling well outflow by be used to drive first series cylinder at the device that rotates at a relatively high speed on the first direction be used to drive second series cylinder and form with the device that rotates than low velocity on same direction in first group of weir cylinder.
18, in the described equipment of claim 17, this receiving system also includes the gas separator device that gas is separated from the mud that is filtered the device reception.
19, in the described equipment of claim 18, this gas separator device comprises the device that limits a moving surface at least, and this moving surface receives the mud that flows out from filter.
20, in the described equipment of claim 1, this filter has a filter bag to be contained on a pair of cylinder flatly separated by a distance each other, and to limit the horizontal stretching target phase of this filter bag, wherein this suction and pumping device is positioned at the below of this level run section.
21, in the equipment described in the claim 20, this suction and pumping device is useful on the stretch vaccum bench device of target phase of this filter bag level of supporting, and this filter bag therefrom passes mud.
22, in the described equipment of claim 21, this vaccum bench device has the bar of many apart certain intervals, and this bar laterally stretches on the tracks of the horizontal-extending section of this filter bag.
23, in the described equipment of claim 22, the cross section of this bar attitude triangular in shape, its top rib is positioned at the below and the adjacency with it of this section filter bag.
24, in the described equipment of claim 21, the device that supports this section filter bag has a plurality of idler pulleies that laterally stretch, and the axle of this idler pulley is parallel to each other and laterally stretch in the below of this section filter bag track.
25, in the described equipment of claim 24, the middle part of the bottom surface of this section filter bag has a protrusion that protrudes, stretches downwards, and the deep-slotted chip breaker that the middle part of this each idler pulley all has a diameter to dwindle, this protrusion is inserted in this groove.
26, in the described equipment of claim 25, each end of this each idler pulley all has an anti-friction bearing; There is an axle head to stretch out outside this bearing; Also be useful on this axle head of supporting and prevent the device that this axle head rotates.
27, in the described equipment of claim 26, this device that prevents that axle head from rotating has a plate, and the top edge of this plate has a plurality of notches downwards, and each bar axle of this idler pulley all is furnished with a nut, and this nut can be held and maintain to the size of this each notch.
28, the described equipment of claim 27 also has second block of plate to be inserted between the plate and this cylinder of trough of belt mouth, and this second block of plate has the hole that runs through this plate, puts into each bar axle of this idler pulley in this each hole.
29, in the described equipment of claim 24, this each idler pulley has an axle and is enclosed within the axle sleeve that the elastomeric material on this is made, and this axle sleeve forms one section tube reducing part at this idler pulley middle part at the certain interval of vacancy, the middle part of this idler pulley.
30, in the described equipment of claim 1, this receiving system also has degasser, is used for removing the gas of the mud that passes filter.
31, in the described equipment of claim 30, this degasser has a pair of rotatingcylindrical drum that is positioned at this no interface moving filter band below; Be useful on this rotatingcylindrical drum of supporting, make it to keep parallel and the device relation of being separated by; Order about two chewing gum and bubble gum in addition and make counter-rotation, mud is extruded the device in the space between two cylinders downwards.
32, the described equipment of claim 31 also has sealing device, is used to prevent passing through Anywhere beyond the space of material between this two cylinder of contiguous this chewing gum and bubble gum.
33, in the described equipment of claim 31, the direction that this chewing gum and bubble gum axially stretches is parallel to the track that this no interface moves strainer substantially.
34, in the described equipment of claim 31, this conveyer is positioned at this chewing gum and bubble gum below.
35, the described equipment of claim 31 also have one at this to the chopping block below the space between the chewing gum and bubble gum, be used to receive the mud that this space is wandered.
36, in the described equipment of claim 35, this degasser device also has an outer cover round this chopping block, and is used for device that gas is removed from this outer cover.
37, in the described equipment of claim 36, this device that sends from the mud of this receiving system is provided with means of egress on outer cover.
38, in the described equipment of claim 37, this last-mentioned conveyer has a pipeline that is used to receive from the mud of outer cover, also has the less blast tube that puts in above-mentioned pipeline of a diameter, the device of the pipeline supply pressure filtrate that also oriented this bore is less.
39, in the described equipment of claim 30, this receiving system has a dish that is positioned at this no interface moving filter band below, and this tray bottom has an outlet; This degasser device have one be positioned at the disk of this outlet lower end and support this disk substantially at the device of horizontal level, order about device that disk rotates and round this disk and keep the cylindrical wall device of certain distance, this cylindrical wall is used to bear the mud of being dished out by centrifugal force from this disk, and this degasser device also have to receive the device of the mud of wandering from this cylindrical wall.
40, in the described equipment of claim 39, this outer casing device includes this cylindrical wall, and surrounds the disk of this rotation.
41, in the described equipment of claim 1, this filter has the filter bag of a no interface, this filter bag stretches round the cylinder of a pair of apart certain intervals, between this is to cylinder, filter bag becomes certain gradient with horizontal plane, this suction and pumping device has the vaccum bench device, be used to support this to this section filter bag between the cylinder, and make mud pass this section filter bag, this receiving system has a plumbing installation that is positioned at the dish of this vaccum bench device below and removes gas, this plumbing installation is connected with this dish, to remove this dish gas inside.
42, the described device of the claim 41 wallboard device in this dish that stretches in addition, this wallboard is transversely stretching at this section filter bag moving track substantially, become several chambers with the internal separation that will coil, this removing gas pipeline has independent pipeline to link to each other with the inside of this dish, is connected on the relative both sides of this wallboard device.
43, in the described equipment of claim 41, this receiving system has one first dish, is positioned at the track below of this section moving filter band, is close to this to one in the cylinder; Also have one second dish, be positioned at the below of remainder of the track of this section moving filter band, and stretch to this to another cylinder in the cylinder, the minimum point of this each dish all respectively has an outlet, and the degasser device is positioned at this each below of coiling.
44, the described equipment of claim 43 is removed the gas pipeline device in addition, and each dish of itself and this links to each other, so that gas is cleared out in each dish.
45, in the described equipment of claim 44, this plumbing installation is connected with dish along this dish separated by a certain intervally, and in this dish, also have some dividing plates, and horizontal expansion is on the track of this section motion filter bag substantially for this dividing plate, and its base is from this tray bottom certain space that is separated by.
46, more in the generating apparatus, these some dividing plates are parallel to each other the described drilling mud of claim 45.
47, in the described equipment of claim 43, from the inner device of removing gas of this dish, there are many laterally to stretch in the removing gas pipeline of this dish, its internal separation that will coil becomes some cells, this pipeline is communicated with this cell, and an orifice plate is respectively arranged in this each pipeline.
48, in the described equipment of claim 1, this no interface moving filter band assembly is made up of an enclosed strainer ring and the supporting band that is positioned at below this strainer ring.
49, in the described equipment of claim 48, this strainer ring has a pair of edge tape and an intermediate support tape.
50, in the described equipment of claim 49, this strainer ring is made up of an outer field refined net filter screen and the more macroreticular filter screen of the second layer, and the intensity of second layer filter screen is better, is used to support this refined net filter screen.
51, in the described equipment of claim 50, this each bar tape all has a longitudinally extending narrow slit, and this refined net filter screen and this supporting filter screen all have the marginal portion to be positioned in this narrow slit, and has above-mentioned this network edge is fixed in measure in this narrow slit.
52, in the described equipment of claim 49, the surface that this each bar sideband all has an inclination stretches along the length of sideband.
53, in the described equipment of claim 52, this supporting strap all has protrusion in its both sides contiguous place and central authorities, and the inclined surface of the surface of this protrusion and this sideband of this filter screen matches.
54, in the described equipment of claim 48, this supporting has some protuberance spine that laterally stretch, and this filtration band is meshed with this spine.
55, in the described equipment of claim 54, this supporting has some holes, stretches on its total length.
56, in the described equipment of claim 1, this filter has a pair of apart cylinder, article one, be contained in the no interface supporting strap on this cylinder, article one, be contained in the filter net device of the no interface on this supporting strap, drive this to a drive unit that the garden tube rotates in the cylinder, the guiding device of this filter screen contiguous and that separate with this cylinder, this guiding device makes this filter screen leave this supporting strap, thereby make the part of this filter screen and this supporting strap be in position spaced, this filter will be carried on the back the device that wash liq sprays to this part of this filter screen at a high speed in addition, with the solia particle that is carried on this part of washing out this filter screen.
57, the described equipment of claim 56 sprayed the device of this part of this filter screen with pressure-air in addition.
58, the described equipment of claim 1 also has the back of the body to wash the back of the body cleaning device of this filter.
59, in the described equipment of claim 58, this back of the body cleaning device has the device that gases at high pressure is sprayed to this filter with drilling mud by the opposite direction of this filter.
60, in the described equipment of claim 58, this back of the body cleaning device has the device that filtrate is sprayed to this filter with drilling mud by the opposite direction of this filter.
61, in the described equipment of claim 1, this conveyer has pump installation, and this pump installation only is made of filtrate spray pump installation.
62, in the described equipment of claim 61, this filter has a closed-loop filter bag assembly, and this filter bag assembly is made up of than the supporting filter screen of coarse grid an outer field refined net and an internal layer.
63, in the described equipment of claim 62, this closed-loop filter bag assembly has one section rectilinear path part, and drilling mud passes this part and falls; This suction and pumping device has one to be positioned at the partly suction and pumping platform of below of this straightway.
64, the described equipment of claim 63 also has first rotor and second rotor of apart certain intervals, these two cylinders have horizontal rotating shaft parallel to each other, there is a supporting strap that is installed with eyelet to stretch and by this cylinder supporting around this cylinder, wherein, this closed-loop filter bag assembly is contained on this supporting strap.
65, in the described equipment of claim 64, this cross feed device includes and makes mud form the device that a vertical curtain shape liquid stream flows to this straightway part on this refined net filter screen.
66, the described equipment of claim 67 is contained in the degasser device of this vaccum bench below in addition, is used for removing the gas of the mud that has passed this filter.
67, in the described equipment of claim 1, this filter has a closed-loop filter bag assembly, and this filter bag assembly is made up of than the supporting filter screen of coarse grid an outer refined net filter screen and an internal layer.
68, in the described equipment of claim 67, this closed-loop filter bag assembly has one section rectilinear path part, and drilling mud passes this part and falls; This suction and pumping device has one to be positioned at the partly suction and pumping platform of below of this linear rows section.
69, the described equipment of claim 68 also has first rotor and second rotor of apart certain intervals, these two cylinders have horizontal rotating shaft parallel to each other, have a supporting strap that is installed with eyelet to stretch around this cylinder and supported by this cylinder, wherein this closed-loop filter bag assembly is contained on this supporting strap.
70, in the described equipment of claim 69, this mud cross feed device includes and makes mud form the device that a vertical blinds shape liquid stream flows to this rectilinear path section part of this refined net filter screen.
71, in the described equipment of claim 1, this filter has the cylinder of a pair of apart certain intervals, this no interface moving filter band pile warp this to cylinder, this has vacuum suction and pumping device to a cylinder in the cylinder, and this vacuum suction and pumping device is used for the suction and pumping from this filter bag of trickle material are come out.
72, in the described equipment of claim 71, this vacuum suction and pumping device is made up of hole that stretches along this cylinder and plumbing installation, and this plumbing installation is connected this hole with a vacuum source.
73, in the described equipment of claim 71, this plumbing installation is provided with the gas collection manifolding of aiming at these some holes in the inside of this cylinder, and this gas collection manifolding axially stretches along this cylinder, and has each gas collection manifolding of suction pipe and this to link to each other.
74, the described equipment of claim 73 has valving, and its effect is that this gas collection manifolding only is connected with a vacuum source in one of this cylinder limited pivot region.
75, in the described equipment of claim 74, this valving of finishing the suction and pumping effect in a limited pivot region has: fixing quill shaft, this cylinder is contained in that the device that rotates on this quill shaft, one stretch round quill shaft and a hole can being opened and the seal diaphragm that stretches on this sleeve that rotates, this suction pipe that is communicated with this sleeve, in this sleeve this between this sleeve and this axle.
76, in the described equipment of claim 1, this suction and pumping device has the vaccum bench that stretches of level substantially; This filter has one to filter band, this filtration band is contained in respectively on upstream cylinder being located at these vaccum bench two ends and the downstream cylinder, like this, this filtration band has one section to move on to a downstream cylinder and a downstream cylinder up section from the upstream cylinder, and this up section top of crossing over this vaccum bench upper surface is also adjoining with this upper surface.
77, in the described equipment of claim 90, this vaccum bench also has a plurality of parallel rollers laterally to stretch in this below of up section, with this up section of supporting; This receiving system has a trough slab, be positioned at position separated by a certain interval, this cylinder below and occupy certain space to limit receiving chamber on the subatmospheric mud, mud is passed down through this section filter bag and deposits on this mud in the receiving chamber, this trough slab is provided with the dog hole hole at its end near this upstream cylinder, one degasser cover stretches downwards from an end of contiguous this upstream cylinder of this trough slab, in this degasser cover a whirligig is arranged, be used to receive the mud that flows out from this trough slab through degassing processing.
78, the described equipment of claim 91 forms and keeps pressure below atmospheric pressure in addition in a vacuum source stretches this degasser cover inside and this mud receiving chamber.
79, in the described equipment of claim 92, this whirligig has the disk of a rotation, also has a delivery pipe that mud is got rid of from this degasser cover bottom.
80, in the described equipment of claim 93, this trough slab has a groove that stretches downwards, and this groove is from vertically the stretch zone of top of this disk middle body of the downstream of this plate.So that mud is placed on the middle body of this disk.
81, the described drilling mud of claim 94 is more in the generating apparatus, this mud cross feed device has the distribution weir device, this distribution weir device has one group of weir cylinder parallel to each other and separated by a certain interval, this each weir cylinder all is horizontally placed on the moving track of this section filter bag, this series cylinder stretches along the top of this section, like this, the space passed between the cylinder of this distribution weir device of this drilling mud is wandered on this motor segment.
82, in the described equipment of claim 95, the space between some cylinders in this weir cylinder is greater than the space between other cylinders in this weir cylinder.
83, in the described equipment of claim 96, the interval between the axis of this weir cylinder is all identical, and has at least the diameter of the diameter of a cylinder and other weir cylinders inequality.
84, the described equipment of claim 97 drives the drum drive that this weir cylinder rotates in addition on same direction.
85, in the described equipment of claim 98, the drum drive that this head roll rotates has at least a part to place reception from the position of the drilling mud that contains drilling cuttings of drilling well outflow by be used to drive first series cylinder at the device that rotates at a relatively high speed on the first direction be used to drive second series cylinder and form with the device that rotates than low velocity on same direction in first series cylinder.
86, in the described equipment of claim 99, this mud cross feed device includes the weir device that becomes a mandarin, this weir device that becomes a mandarin has a casing, this case has a darker arrival end and a more shallow port of export that is positioned at this cylinder top, weir, distribution weir upstream, also has a bottom that is inclined upward to horizontal plane from the arrival end to the port of export.
87, in a well system, including rotation drilling tool and reception annotates the mud of down-hole and discharges the mud that flows out from boring and the device of drilling cuttings, its improvement includes the mud conditioning device, this treating apparatus is used for handling all mud and the drilling cuttings of discharging from the down-hole continuously or removing all drilling cuttings of mud veritably, so that more living mud to be provided, the mud of this improvement after in addition will be more living is from the defeated device of getting back to the drilling well inlet of mud conditioning device, and mud really keeps stabilised quality like this.
88, drilling equipment is by forming with the lower part: drill bit, rotate this drill bit device, fail back the EGR of this boring again and really remove all devices of drilling mud to the device of this drill supply drilling mud, all drilling muds of discharging from boring when being used for receiving this drill bit work and with all drilling muds greater than the solid particle of preliminary dimension.
89, the equipment of handling the drilling mud that probing work produced is by forming with the lower part: produce the purifier that purifies mud and will purify mud and fail back the device that drilling tool enters the mouth again thereby advance the feeding mechanism of down-hole, the device that receives the mud that contains drilling cuttings that flows out from the down-hole, the solid particle of really removing all pre-sizings from impure mud with pump to drilling tool supply drilling mud.In this equipment, device, purifier and feedback purification mud device that feeding mechanism, reception contain impurity mud link together in turn, form all drilling muds fluid course that flow through, continuous operation.
90, the method for the more living drilling mud that flows out from the down-hole is made up of following steps:
(a) filter bag that the no interface of a upper surface is arranged is set;
(b) this no interface filter bag is moved along a predetermined track;
(c) drilling mud is transported to the upper surface of this no interface filter bag;
(d) by the suction and pumping effect below this filter bag, attract drilling mud to pass this filter bag, make solid particle stay the upper surface of this no interface filter bag thus, and make gas isolate this drilling mud.
91, in the described method of claim 90, this drilling mud is transported on this no interface filter bag with the form of curtain shape liquid stream, and this curtain shape liquid stream is to be transferred along the orbit of this no interface filter bag certain interval that is separated by.
92, the described method of claim 76 includes drilling mud and passes this no interface filter bag mud degassing step afterwards.
93, in the described method of claim 78, this degassing step realizes by this drilling mud is forced on the surface.
94, the described method of claim 76, and comprise that this drilling mud on this no interface filter bag upper surface sprays more living drilling mud, helps the method that makes mud pass this filter bag.
95, the described method of claim 76 and comprise and wash that part of step that this no interface filter bag mud has passed with water.
96, the described method of claim 81 also comprises the step of anhydrating part from this no interface filter bag suction subsequently.
97, the described method of claim 76 comprises subsequently and washs that part of step that mud has formerly passed in this filter bag with diesel oil.
98, the described method of claim 83 also comprises the step that the diesel oil on this strainer is removed in suction subsequently.
99, the described method of claim 76, but also comprise the step of the solid particle of removing this no interface filter bag upper surface.
100, in the described method of claim 85, the step of this removing solid particle is by this no interface filter bag is moved along an arc track, and the solid particle that utilizes centrifugal force to remove on this filter bag is realized.
101, in the described method of claim 85, the step of this removing solid particle is sprayed this no interface filter bag realization dorsad by using high-speed gas.
102, the described method of claim 76 also comprises the step of this no interface filter bag being carried out the liquid rushed back.
103, the described method of claim 76 also comprises following step: along the orbit of this no interface filter bag, on the position separated by a certain interval drilling mud is being transported on this filter bag so that the curtain shape liquid that crosses this filter bag is streamed; Drilling mud filtrate is sprayed on this drilling mud that is transported to this elongated filter bag, to assist forcing this drilling mud to pass this filter bag; To the mud that passes this elongated filter bag processing that outgases; This elongated filter bag is carried out liquid scrubbing, the mud composition on the solid particle that is stated from this elongated filter bag is washed off; The material that from this elongated filter bag wash liquid is dissolved in this wash liquid is extracted out; The solid particle of the mode of washing by centrifugal force and liquid rushed back on will this elongated filter bag discharged.
104, the method that is no more than under the predetermined condition of predetermined value of the size that the mud of standard quality is remained on solia particle wherein may further comprise the steps: the drilling mud of standard quality is pumped on the drill bit of down-hole equipment; Make the down-hole slurry that flows back to from drill bit according to priority by vacuum apparatus and degasser device continuously, make mud be returned to its predetermined standard quality, with the working method of continuous flow will be more living defeated the getting back on the drill bit of mud, by this working method, make all mud all obtain handling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101523A CN85101523A (en) | 1985-04-01 | 1985-04-01 | Single pass slurry rejuvenation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101523A CN85101523A (en) | 1985-04-01 | 1985-04-01 | Single pass slurry rejuvenation system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85101523A true CN85101523A (en) | 1987-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85101523A Pending CN85101523A (en) | 1985-04-01 | 1985-04-01 | Single pass slurry rejuvenation system and method |
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| CN (1) | CN85101523A (en) |
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| CN101180448B (en) * | 2005-04-05 | 2012-05-30 | M-I有限公司 | Water-based completion and displacement fluids and methods of application |
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| CN113846982A (en) * | 2021-11-04 | 2021-12-28 | 深圳市迎埃绿智能环保科技有限公司 | Mud cleaning and circulating equipment for shale gas exploitation |
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1985
- 1985-04-01 CN CN85101523A patent/CN85101523A/en active Pending
Cited By (10)
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