CN1074499C - Ultrahigh pressure resistant drilling equipment - Google Patents
Ultrahigh pressure resistant drilling equipmentInfo
- Publication number
- CN1074499C CN1074499C CN99109446A CN99109446A CN1074499C CN 1074499 C CN1074499 C CN 1074499C CN 99109446 A CN99109446 A CN 99109446A CN 99109446 A CN99109446 A CN 99109446A CN 1074499 C CN1074499 C CN 1074499C
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- China
- Prior art keywords
- joint
- drilling
- shell
- drill bit
- resisting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000005553 drilling Methods 0.000 title claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 230000004087 circulation Effects 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims description 33
- 230000000694 effects Effects 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 12
- 244000261422 Lysimachia clethroides Species 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 10
- 241000196324 Embryophyta Species 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 5
- 235000015111 chews Nutrition 0.000 claims description 4
- 230000037452 priming Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 238000007790 scraping Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 6
- 238000012856 packing Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002637 fluid replacement therapy Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001839 systemic circulation Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The ultrahigh pressure resistant drilling equipment consists of a slurry pump station, a hose, an ultrahigh pressure resistant water faucet, an ultrahigh pressure resistant drilling tool joint, a movable circulating joint and a mixed type drill bit, wherein a herringbone sealing ring is lengthened, O-shaped sealing rings are additionally arranged at the upper end of a flushing pipe and the lower part of the herringbone sealing ring, and a lubricating oil channel is filled into a nozzle by a continuous oil feeding device. An O-shaped sealing ring and a mud scraping rubber ring are arranged on the lower portion of a male buckle connector body of the ultrahigh pressure resistant drilling tool connector. The movable circulation joint consists of a mandrel, a shell and a filter. The hybrid drill bit is composed of a bit body, a cone, a central body and a composite sheet. The ultrahigh pressure drilling can greatly improve the drilling speed, shorten the drilling period and reduce the drilling cost.
Description
The present invention relates to a kind of drilling rig capable of resisting very high pressure, belong to the oil drilling engineering.Drilling equipment comprises mud pumping plant, hose, water tap, drill string and drill bit.
The deficiencies in the prior art part is: voltage endurance capability is on the low side, and rated insulation voltage is 35MPa, but actual working pressure is 20MPa, but also can not guarantee stable and lasting; The application life of equipment is shorter.Thereby cause the slow and construction costs height of bit speed.
The objective of the invention is to overcome the weak point in the above-mentioned technology and a kind of voltage endurance capability height (construction pump pressure reach 50MPa), bit speed is fast and construction costs is low drilling rig capable of resisting very high pressure be provided.
Purpose of the present invention can reach by following measure: the present invention is made up of mud pumping plant, hose, the tap of anti-high-pressure water the, the tool joint of anti-super-pressure, cycle of activity joint and mixed type drill bit,
(1) tap of anti-the high-pressure water is made up of both gooseneck swivel, chev(e)ron seal circle, central tube, body, support, washing pipe, pillar, jackscrew, jackscrew dish, continuous feeding means and lower sealing device, the chev(e)ron seal circle has extended, O-ring seals is set up in washing pipe upper end and chev(e)ron seal circle bottom, and the oil leab of chev(e)ron seal circle injects oil by continuous feeding means by high-pressure rubber pipe and chews.
(2) there is O-ring seals the male joint body bottom of the tool joint of anti-super-pressure and scrapes the earth rubber circle.
(3) the cycle of activity joint is made up of mandrel, shell and cleaner, and the mandrel middle part is six square tubes, and stopper slot is arranged at mandrel top, shell middle part inner chamber is a hexagonal hole, the hexagonal hole of shell is set in outside mandrel six square tubes, and outer casing underpart has circulation port, and mandrel and outer casing underpart have cleaner.
(4) the mixed type drill bit is made of drill body, gear wheel, centerbody and composite sheet, axis hole is all arranged on drill body and the centerbody, gear wheel wheel shaft two ends are supported on respectively in the axis hole of drill body and centerbody, and the centerbody upper end is welded in the drill body, and the centerbody lower end is connected with composite sheet.
The continuous feeding means of the tap of anti-the high-pressure water is made of oil cylinder, piston and joint, the oil cylinder rear end has gland, O-ring seals and drilling fluid to enter valve, the oil cylinder front end has O-ring seals and joint, there is the cylindrical shell of band draining valve, priming valve and oil filler the joint front portion, gland and oil cylinder, oil cylinder and joint and joint and cylindrical shell are threaded, and have high-pressure rubber pipe to be communicated with between draining valve and oil are chewed.
The lower sealing device of the tap of anti-the high-pressure water is by washing pipe, lower seal assembly and joint shell constitute down, following washing pipe is communicated with by transition joint and washing pipe, have on the chev(e)ron seal circle of lower seal assembly pressure cap and under back-up ring is arranged, back-up ring is threadedly connected to down the washing pipe bottom, and the lower seal assembly is loaded between joint shell and the following washing pipe.
The mud pump valve of mud pumping plant has pressure sensor.
In the slurry tank of mud pumping plant filter is arranged, be made up of upper hose, filter cylinder, pillar, pulley and stay cord, upper hose is set with filter cylinder, and pillar is welded in upper hose, and there is pulley on the pillar top, and the stay cord lower end is connected on the filter cylinder.The cleaner of cycle of activity joint is threadedly connected in the shell, and cleaner top section has the filtration aperture.The circulation port of the shell of cycle of activity joint is three.The gear wheel of mixed type drill bit has foreign steamer and interior wheel, between wheel shaft and the outer interior wheel slip cap is arranged.The centerbody lower end sidepiece of mixed type drill bit has nozzle and bottom that the blade of band composite sheet is arranged.The cutting plane of the composite sheet of mixed type drill bit is lower than the cutting plane of gear wheel.
The drawing of accompanying drawing is described as follows: Fig. 1 is total figure of the present invention; Fig. 2 is the plan view of mud pumping plant slurry tank inner filtration device of the present invention; Fig. 3 is the lateral view of Fig. 2; Fig. 4 partly cuts open figure for the part of high-pressure water tap of the present invention; Fig. 5 is the figure of the continuous feeding means of high-pressure water tap of the present invention; Fig. 6 is the figure of high-pressure water tap sealing device of the present invention; Fig. 7 is the figure of tool joint of the present invention; Fig. 8 is the figure of cycle of activity joint of the present invention; Fig. 9 is the figure of mixed type drill bit of the present invention.The accompanying drawing piece number is represented: 1, both gooseneck swivel 2, pillar 3, connector 4, washing pipe 5, oil chews 6, sealing ring box 7, sealing ring packing ring 8, lining 9, chev(e)ron seal circle 10, sealing ring clamping cap 11, O-ring seals 12, continuous feeding means 13, central tube 14, support 15, jackscrew 16, jackscrew dish 17, water inlet 18, oil leab 19, fuel feed hole 20, the mouth of pipe 21, drop handle 22, body 23, high-pressure rubber pipe 24, oil cylinder 25, piston 26, joint 27, gland 28, O-ring seals 29, advance people's valve 30, O-ring seals 31, draining valve 32, priming valve 33, oil filler 34, chamber 35, following washing pipe 36, joint shell 37, pressure cap 38, last O-ring seals 39, chev(e)ron seal circle 40, following O-ring seals 41, back-up ring 42, groove 43, derrick leg 44, standpipe 45, hose 46, the tap of anti-high-pressure water the 47, kelly bar 48, tool joint 49, drilling rod 50, drill collar 51, cycle of activity joint 52, mixed type drill bit 53, slurry tank 54, upper hose mouth 55, pillar 56, filter cylinder 57, backing pin 58, upper hose 59, pulley 60, stay cord 61, mandrel 62, spacer pin 63, shell
64, O-ring seals 65, circulation port 66, cleaner 67, screw thread
68, stopper slot 69, six square tubes 70, filtration aperture 71, drill body
72, foreign steamer 73, O shape sealing 74, wheel shaft 75, slip cap
76, interior wheel 77, nozzle 78, centerbody 79, blade
80, composite sheet 81, jump ring 82, hole 83, key
84, male joint body 85, taper pipe thread 86, O-ring seals 87, scrape the earth rubber circle
88, box joint body
The invention will be further described below in conjunction with embodiment and accompanying drawing:
Applied for patent by the applicant for following three kinds among the present invention:
The application number denomination of invention applying date
1 99205116.9 anti-high-pressure water tap 1999.03.15
2 99211934.0 cycle of activity joint 1999.06.02
3 99211583.3 mixed type drill bit 1999.06.02
Fig. 1 represents general structure signal of the present invention, pass through standpipe 44, hose 45, the tap of anti-high-pressure water the 46, kelly bar 47, tool joint 48, drilling rod 49, drill collar 50 and the cycle of activity joint 51 on derrick leg 43 sides from the super-pressure mud of slush pump, again by the hydrophthalmia in the mixed type drill bit 52, be delivered to the down-hole, and along with drill bit rotates so that shaft bottom fragmented rock (being landwaste) is transported to ground.The mud operating pressure is increased to 30MPa from existing 20MPa, about mechanical speed can double, so the operating pressure that improves mud has huge meaning to accelerating bit speed and reducing construction costs.
The first, mud pumping plant
Existing slush pump can satisfy the requirement of boosting on material and structure.The present invention only makes 2 improvement to it:
One, at the valve position of slush pump installing pressure sensor, so that the situation of change that recording valve is pressed, when overhigh pumping pressure or cross low and when breaking down, can remind operating personnel in time to fix a breakdown.
Two, set up filter in the slurry tank 53 that stores mud, its structure is seen Fig. 2 and Fig. 3.Two filter cylinders 56 are set on the upper hose 58, and filter cylinder can rotate around upper hose.Be fixed with pillar 55 between two filter cylinders on the upper hose, there is pulley 59 the pillar upper end, has stay cord 60 to hang on the pulley respectively and hauls filter cylinder.One of them filter cylinder of pull-up when needing, to remove the outer dirt of filter cylinder, another filter cylinder continues to participate in filtration operation, and after waiting to have removed cartridge filter, two filter cylinders can participate in filtration operation simultaneously.There are back-up ring and backing pin 57 in the outer end of two filter cylinders, in case filter cylinder skids off.Upper hose 58 is welded on the mud tank skin.During use, the mud in the slurry tank enters upper hose after filter cylinder filters, enter slush pump from upper hose mouth 54 again.
The second, hose
Have in the existing hose 45 and can satisfy the present invention and boost and require, the present invention selects this hose for use.
Three, water tap
Fig. 4-Fig. 6 represents the structure of the present invention's tap of anti-high-pressure water the 46.
Water tap is important building block in the oil and gas well drilling equipment.It is a link accepting boring tower top hook handling power, and it hangs in the hook mouth of hook by drop handle, and the bottom connects by the same drilling tool of kelly bar, drill bit.Drilling fluid (also claims flushing fluid simultaneously, be mud) by annular space between slush pump-manifold of ground-standpipe-hose-water tap-kelly bar-drilling tool-drill bit-well drilling tool, forming a passage circulates, reach and down drilling cuttings take the purpose of ground and cooling drilling tool to, be the essential condition of normally creeping into.
The body of water tap hangs under the hook, and shell (containing body, support, both gooseneck swivel) does not allow to rotate.And kelly bar has only rotation could drive lower drilling tool to creep into, so by water tap will solve that shell does not change and interior pipe exists between rotating convection cell sealing problem.The size of its sealability is having a strong impact on the efficient of drilling engineering.
Prior art can not be used under the super-pressure state owing to there is following weak point.1, both gooseneck swivel and washing pipe junction do not have the O RunddichtringO; 2, the sealing performance of chev(e)ron seal circle is not enough; 3, both gooseneck swivel is laid particular stress on stressed; 4, the washing pipe assembling and setting is difficult to and central tube centering; 5, washing pipe oil leab difficulty of processing is big; 6, the machining accuracy of washing pipe and fineness require height, and processing cost is higher; 7, lubricated is to adopt intermittent oiling, can not reach true lubrication, and oil consumption is bigger.
Fig. 4 represents the general structure of high-pressure water tap of the present invention.Be positioned near the super-pressure slush pump of well head, the super-pressure mud of output is communicated with by the water inlet 17 of several ten meters long hose 45 (see figure 1)s with the high-pressure water tap both gooseneck swivel 1 of the present invention that is positioned at boring tower top.Super-pressure mud enters the shaft bottom through washing pipe 4, central tube 13, the mouth of pipe 20, drilling tool and drill bit.By connector 3 both gooseneck swivel and washing pipe 4 are linked together.
At first, in order to improve the sealing performance of chev(e)ron seal circle 9, the length of the chev(e)ron seal circle of the prior art that extended.
In order to ensure sealing, in the junction of washing pipe and both gooseneck swivel and below the chev(e)ron seal circle, added O RunddichtringO 11.
Stressed by laying particular stress on of the heavy hose of water inlet 17 suspentions in order to improve the both gooseneck swivel that is cantilever position, high-pressure water tap of the present invention has been set up pillar 2 on support 14 tops, in order to support both gooseneck swivel.
For guarantee when mounted between washing pipe 4 and the central tube 13 with one heart, support 14 center of top of high-pressure water tap of the present invention have been set up jackscrew dish 16 and jackscrew 15, by adjusting jackscrew, after mixing up the jackscrew dish is welded on the support to adjust the centering of washing pipe to central tube.
There is oil leab 18 washing pipe inside, lubrication oil is fed the fuel feed hole 19 of 9 of chevron shaped sealing rings.Washing pipe is a consumable accessory, and processing capacity is bigger, and precision prescribed and fineness are all high, and in order to reduce consumption, also for solving the difficulty of processing of oil leab 18, high-pressure water tap of the present invention adopts the way that adds lining 8 simultaneously.Lining outside and chevron shaped sealing ring 9 contact with O RunddichtringO 11 under it, and lining employing corrugated cylindrical to be increasing the contact length of itself and sealing ring, thereby have further improved sealing performance.
In order to improve the lubricant effect of lining and sealing ring, the intermittent oiling that changes prior art is for continuously, evenly injecting the way of grease.Its measure is as follows: rig floor is provided with continuous feeding means 12, utilizes part (present embodiment is 1/2nd) the pressure promotion grease of pump pressure to chew 5 by special high-pressure sebific duct 23 injection lubrication oil.Like this, reach the true lubrication except that guaranteeing; Can also improve sealability; Prolong the application life of sealing ring; Minimizing causes indispensable idle cost every day because of the needs of maintenance; Good operation safety.
Piece number 6 is the sealing ring box among the figure, and 7 is the sealing ring packing ring, and 10 is the sealing ring clamping cap, and 21 is drop handle, and 22 is body.
Fig. 5 represents the structure of continuous feeding means 12, and mainly by oil cylinder 24, piston 25 and joint 26 constitute, and the oil cylinder rear end has gland 27, O-ring seals 28 and drilling fluid to enter valve 29, and gland and oil cylinder rear end are threaded.The oil cylinder front end has joint and O-ring seals 30, and joint rear portion and oil cylinder front end are threaded.The joint front threads is connected with the cylindrical shell of band draining valve 31, priming valve 32 and oil filler 33, and high-pressure rubber pipe 23 is arranged before the draining valve.
During use, open and enter valve 29, the pressure drilling fluid enters in the oil cylinder, and cylinder front end chamber 34 internal pressures are 1/2nd of drilling liquid pressure, continuously discharges from draining valve 31, injects lubrication oil through high-pressure rubber pipe 23 and chews 5.When oil mass is not enough, first shut off valve 29 and 31, opening valve 32 adds lubrication oil from oil filler 33.
Fig. 6 represents the structure of lower sealing device, mainly is made of down washing pipe 35, lower seal assembly and joint shell 36, and following washing pipe is connected with washing pipe 4 by transition joint (expression on the figure), and groove 42 is arranged at following washing pipe top, unloads convenient usefulness on during the confession seal failure.The lower seal assembly comprises pressure cap 37, last O-ring seals 38, chev(e)ron seal circle 39, following O-ring seals 40 and back-up ring 41, have on the chev(e)ron seal circle pressure cap and under back-up ring is arranged, back-up ring is threadedly connected to down the washing pipe bottom, and the lower seal assembly is loaded between joint shell and the following washing pipe.The joint shell lower end is connected with kelly bar.
Four, drill string
Drill string is to go into the well casing post with various terminal with what kelly bar, drilling rod and drill collar were formed by connecting, and drill string typically refers to the above drilling tool of drill bit.
Existing kelly bar, drilling rod and drill collar all can satisfy the requirement of boosting of the present invention.
The present invention has done following 2 improvement to drill string:
One, tool joint is improved to overpressure resistant tool joint 48.
Two, the cycle of activity joint has been set up in the drill bit top.
The 4th. one, the tool joint of anti-super-pressure.
Existing tool joint does not add any sealing ring, only depend on box and pin (the promptly outer endosiphuncular tube screw thread 85) joint on male joint body 84 and the box joint body 88, seal by huge make-up torque surface contact pressure, its sealability is below 25Mpa, depress thorn through the 20Mpa working barrel of being everlasting and leak, sealing reliability was very poor especially when particularly less than normal or drilling tool wore out in last button moment.
Fig. 7 represents the structure of overpressure resistant tool joint of the present invention.Set up O-ring seals 86 outside the tubing string below taper pipe thread and scrape earth rubber circle 87, reliable with the sealing after guaranteeing to boost.
The 4th. two, the cycle of activity joint
Fig. 8 represents the structure of cycle of activity joint of the present invention.
Still the joint that does not have this kind structure in the prior art.Existing field drilling when using little nozzle drill bit, may bring that drilling cuttings carries difficulty, the waste of out-of-hole time horsepower is big and runs into high-pressure fluid and have limitation on handling during the low pressure leakage.
Cycle of activity joint of the present invention is made up of mandrel 61, shell 63 and cleaner 66, and there are six square tubes 69 at mandrel 61 middle parts, and mandrel top cylindrical has stopper slot 68, and mandrel 61 is loaded in the shell 63.Shell middle part inner chamber has hexagonal hole, and hexagonal hole is set in outside six square tubes 69 of mandrel, and spacer pin 62 is housed in the screw of shell upper.Outer casing underpart has circulation port 65, and the circulation port of present embodiment has three.There is screw thread 67 the shell bottom.In mandrel and outer casing underpart inner chamber cleaner 66 is arranged, cleaner has the aperture 70 of filtration on the top, the hole of central porose mouth down, and cleaner has external screw thread outside the lower end, connects on shell by this external screw thread.Between cleaner and mandrel and the shell, have O-ring seals 64 to seal between mandrel and the shell.
Mandrel 61 is connected on the interior drill bit of oil well and under the drill collar, and the drill collar top is connected with drilling rod, and mandrel passes to shell by hexagonal structure with moment of torsion and the pressure that ground applies.Screw thread 67 under the shell connects with drill bit, and when drill bit contact shaft bottom, drill bit is pass on the purpose of creeping into reaming at moment of torsion and pressure effect backspin.When drill bit was lifted from the shaft bottom, mandrel 61 was up in the control range of spacer pin 62 and stopper slot 68, and at this moment, the bigger circulation port 65 in aperture is communicated with mandrel inner chamber and shell exocoel.Liquid stream from ground slush pump and logical people's drilling rod, drill collar and mandrel inner duct outwards flows out from circulation port, liquid flowing resistance reduces significantly, the pump pressure of slush pump descends and discharge capacity increases, managing outer flow velocity improves, improve and take the sand effect, can also effectively wash away and remove simultaneously the drilling cuttings that adheres to and pile up on the borehole wall.When there is high-pressure fluid the down-hole, be convenient to kill-job.When there is leakage the down-hole, can big discharge capacity fluid replacement and be difficult for taking place well and collapse.
When the prior art drill bit uses the minor diameter nozzle, also occur in down easily bore and drilling process in block nozzle and be forced to trip-out, so, an ad hoc cleaner 66 has had it in cycle of activity joint of the present invention, under the control of filtering aperture 70, guaranteed that the little nozzle of drill bit can not stop up, and the foreign material on cleaner can mentioned all discharges from circulation port 65 of drill bit circulation time, and downhole safety has been played important guaranteeing role.
The mode of occupation of cycle of activity joint of the present invention is as follows:
When creeping into, mandrel is in the following position of shell, and circulation of fluid all by the annular space of bit port to the outside, flows to ground, repeatedly circulation.Utilize high pump pressure this moment, help the drill bit broken formation, rate of penetration is improved in the bottom-hole cleaning.But when mentioning drilling tool and drill bit when leaving the shaft bottom, high pump pressure is an idle work, and power consumption is very big, especially ought meet down hole problem, oil gas is invaded or the sand band is unclean, when the borehole wall has blocked portion, need to increase discharge capacity, but because the pump pressure restriction is powerless, so use cycle of activity joint of the present invention, after drill bit leaves the shaft bottom, open in three systemic circulation ducts, and fluid flows into annular space through this duct, and pump pressure reduces, favourable complex situations are handled, and can reduce consumption.And outer casing underpart adds cleaner and makes the obstruction that has finally prevented bit port, has improved downhole safety and has improved the production timeliness.Therefore, as long as use the construction of drill bit nozzle, cycle of activity joint of the present invention all has use value.
Set up the cycle of activity joint and can obtain following good effect: under the little nozzle condition of work of use, can improve the down-hole drilling cuttings and carry; Increase the processing means when running into high-pressure fluid layer and low pressure lost-circulation zone; Reduce down hole problem, and the blocked portion phenomenon in pulling out of hole provided more effectively overcome measure.
Five, mixed type drill bit
The drill bit that the present invention adopts is the mixed type drill bit that the applicant has applied for.
Prior art is a tricone bit.Its weak point is: the gear wheel wheel shaft is a cantilever beam structures, owing to the stressed unreasonable wheel shaft diameter of having to strengthen of wheel shaft, causes the hub of gear wheel thin, and the lost cone accident takes place easily.
Fig. 9 represents the structure of mixed type drill bit of the present invention.There is the hole of passing through for mud 82 in drill body 71 central authorities, and there is the outer cone thread that is connected with the cycle of activity joint upper end, and the hole of packing into for wheel shaft is arranged at the bottom.Present embodiment adopts three gear wheels, thereby is provided with three in the hole of packing into for gear wheel wheel shaft 74.Centerbody 78 upper ends have 83 3 on key to connect and are welded in the drill body inner chamber, the bottom outside has and three in the corresponding hole of packing into for wheel shaft of cone body, can reduce to take turns the thickness of shaft diameter and thickening gear wheel hub like this, the wheel spindle nose has jump ring 81 outward, packs into behind the centerbody axis hole with stuck to wheel shaft for wheel shaft.Have under the axis hole of centerbody for 77 3 of the nozzles of mud ejection.Gear wheel on the gear wheel wheel shaft 74 has foreign steamer 72 and interior wheel 76, between wheel shaft and the interior foreign steamer slip cap 75 is arranged, and the slip cap of mixed type drill bit of the present invention adopts self-lubricating material.The lower end of centerbody is fixed with blade 79, composite sheet 80 is arranged on the blade 79, the composite sheet of present embodiment is an existing polycrystalline diamond cutting blade (PDC), and the cutting plane of composite sheet is lower than the cutting plane of gear wheel, in order to the stratum at broken well middle part in the drill bit rotation.During use, from nozzle outwards the mud of ejection can be simultaneously the drilling cuttings of gear wheel and composite sheet be sprayed to the outer confession circulation usefulness in the mud pit of ground of returning, the mud of ejection also can cool off gear wheel and composite sheet simultaneously.In order to reduce the wearing and tearing of slip cap, be equiped with O-ring seals 73 respectively at the slip cap two ends.
Owing to set up composite sheet, can improve rate of penetration, shorten drilling period and reduce the drilling engineering cost; Can prolong the application life of rock bit.
The present invention contrasts prior art, has the advantage of ability super-pressure. Since use the super-pressure drilling well, can be significantly Degree improves the speed of drilling well; Shorten drilling period and well construction period; Reduce drilling cost; Greatly improved both domestic and external Occupation rate of market. In a word, adopt the present invention to accelerate bit speed the exploration and development in oil field is had very important meaning Justice.
Claims (10)
1, a kind of drilling rig capable of resisting very high pressure comprises mud pumping plant and hose, it is characterized in that, also comprises the tap of anti-high-pressure water the, the tool joint of anti-super-pressure, cycle of activity joint and mixed type drill bit,
(1) tap of anti-the high-pressure water is made up of both gooseneck swivel, chev(e)ron seal circle, central tube, body, support, washing pipe, pillar, jackscrew, jackscrew dish, continuous feeding means and lower sealing device, the chev(e)ron seal circle has extended, O-ring seals is set up in washing pipe upper end and chev(e)ron seal circle bottom, the oil leab of chev(e)ron seal circle injects oil by continuous feeding means by high-pressure rubber pipe and chews
(2) there is O-ring seals the male joint body bottom of the tool joint of anti-super-pressure and scrapes the earth rubber circle,
(3) the cycle of activity joint is made up of mandrel, shell and cleaner, and the mandrel middle part is six square tubes, and stopper slot is arranged at mandrel top, shell middle part inner chamber is a hexagonal hole, and the hexagonal hole of shell is set in outside mandrel six square tubes, and outer casing underpart has circulation port, mandrel and outer casing underpart have cleaner
(4) the mixed type drill bit is made of drill body, gear wheel, centerbody and composite sheet, axis hole is all arranged on drill body and the centerbody, gear wheel wheel shaft two ends are supported on respectively in the axis hole of drill body and centerbody, and the centerbody upper end is welded in the drill body, and the centerbody lower end is connected with composite sheet.
2, drilling rig capable of resisting very high pressure according to claim 1, it is characterized in that, the continuous feeding means of the tap of anti-the high-pressure water is made of oil cylinder, piston and joint, the oil cylinder rear end has gland, O-ring seals and drilling fluid to enter valve, the oil cylinder front end has O-ring seals and joint, there is the cylindrical shell of band draining valve, priming valve and oil filler the joint front portion, and gland and oil cylinder, oil cylinder and joint and joint and cylindrical shell are threaded, and has high-pressure rubber pipe to be communicated with between draining valve and oil are chewed.
3, drilling rig capable of resisting very high pressure according to claim 1, it is characterized in that, the lower sealing device of the tap of anti-the high-pressure water is by washing pipe, lower seal assembly and joint shell constitute down, following washing pipe is communicated with by transition joint and washing pipe, have on the chev(e)ron seal circle of lower seal assembly pressure cap and under back-up ring is arranged, back-up ring is threadedly connected to down the washing pipe bottom, and the lower seal assembly is loaded between joint shell and the following washing pipe.
4, drilling rig capable of resisting very high pressure according to claim 1 is characterized in that, the mud pump valve of mud pumping plant has pressure sensor.
5, drilling rig capable of resisting very high pressure according to claim 1, it is characterized in that, in the slurry tank of mud pumping plant filter is arranged, form by upper hose, filter cylinder, pillar, pulley and stay cord, upper hose is set with filter cylinder, pillar is welded in upper hose, and there is pulley on the pillar top, and the stay cord lower end is connected on the filter cylinder.
6, drilling rig capable of resisting very high pressure according to claim 1 is characterized in that, the cleaner of cycle of activity joint is threadedly connected in the shell, and cleaner top section has the filtration aperture.
7, drilling rig capable of resisting very high pressure according to claim 1 is characterized in that, the circulation port of the shell of cycle of activity joint is three.
8, drilling rig capable of resisting very high pressure according to claim 1 is characterized in that, the gear wheel of mixed type drill bit has foreign steamer and interior wheel, between wheel shaft and the outer interior wheel slip cap is arranged.
9, drilling rig capable of resisting very high pressure according to claim 1 is characterized in that, the centerbody lower end sidepiece of mixed type drill bit has nozzle and bottom that the blade of band composite sheet is arranged.
10, drilling rig capable of resisting very high pressure according to claim 1 is characterized in that, the cutting plane of the composite sheet of mixed type drill bit is lower than the cutting plane of gear wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109446A CN1074499C (en) | 1999-07-06 | 1999-07-06 | Ultrahigh pressure resistant drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109446A CN1074499C (en) | 1999-07-06 | 1999-07-06 | Ultrahigh pressure resistant drilling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1244623A CN1244623A (en) | 2000-02-16 |
| CN1074499C true CN1074499C (en) | 2001-11-07 |
Family
ID=5273920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99109446A Expired - Fee Related CN1074499C (en) | 1999-07-06 | 1999-07-06 | Ultrahigh pressure resistant drilling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074499C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563901B (en) * | 2015-01-14 | 2016-06-29 | 东营市创元石油机械制造有限公司 | Relief valve protection joint is driven on oil drilling top |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2224271Y (en) * | 1994-12-27 | 1996-04-10 | 地质矿产部勘探技术研究所 | Multifunction combine driller |
| CN2323128Y (en) * | 1998-02-17 | 1999-06-09 | 杜晓瑞 | Borehole combined drilling tool for superhigh pressure jet drilling |
-
1999
- 1999-07-06 CN CN99109446A patent/CN1074499C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2224271Y (en) * | 1994-12-27 | 1996-04-10 | 地质矿产部勘探技术研究所 | Multifunction combine driller |
| CN2323128Y (en) * | 1998-02-17 | 1999-06-09 | 杜晓瑞 | Borehole combined drilling tool for superhigh pressure jet drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1244623A (en) | 2000-02-16 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20011107 Termination date: 20130706 |