CN117307065A - Drilling fluid recovery processing system and method for exploration drilling - Google Patents
Drilling fluid recovery processing system and method for exploration drilling Download PDFInfo
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- CN117307065A CN117307065A CN202311221106.XA CN202311221106A CN117307065A CN 117307065 A CN117307065 A CN 117307065A CN 202311221106 A CN202311221106 A CN 202311221106A CN 117307065 A CN117307065 A CN 117307065A
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- 238000005553 drilling Methods 0.000 title claims abstract description 314
- 239000012530 fluid Substances 0.000 title claims abstract description 223
- 238000011084 recovery Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 178
- 238000001914 filtration Methods 0.000 claims abstract description 128
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 44
- 210000001503 joint Anatomy 0.000 claims description 42
- 238000005070 sampling Methods 0.000 claims description 31
- 238000004062 sedimentation Methods 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000009751 slip forming Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 10
- 238000011835 investigation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a drilling fluid recovery processing system and method for exploration drilling. The system comprises: the recovery circulation system comprises a drilling fluid drainage device, a first filtering component, a second filtering component, a third filtering component and a settling tank; the system directly collects upward slag-carrying drilling fluid from the orifice of the exploration hole, and the upward slag-carrying drilling fluid is separated and recovered into a liquid storage tank through a series of filtering devices for recycling by a slurry pump. 100% of the drilling fluid with slag returned to the orifice is recovered, subjected to multistage filtration and precipitation, so that the clean drilling fluid without slag is obtained and returned to the drilling fluid liquid storage tank for continuous recycling. The invention can not only ensure that the earth surface has no drilling fluid discharge and no pollution in the drilling operation range during the investigation of urban and rural areas, but also can filter and recycle the slag-carrying drilling fluid and the residual drilling fluid of the core pipe, can save the whole consumption of the drilling fluid of the exploration hole by more than 50 percent, has convenient operation and obvious effect, and has great popularization and application values.
Description
Technical Field
The invention relates to the technical field of municipal investigation, in particular to a drilling fluid recovery processing system and method for exploration and drilling.
Background
In the municipal engineering field, red line ranges of roads, bridges and culverts, subway tunnels and pipeline engineering are often positioned in urban roads, green belts, resident living areas and the like, and the areas relate to urban appearance and civilian life, so that the requirements for safe civilized environment protection during construction are extremely high. In the construction process of the field industry, the rotary drilling machine is assisted with drilling fluid to circularly drill the core, and if the slag-carrying drilling fluid which is returned in the drilling is discharged randomly without control in the process, the slag-carrying drilling fluid is scattered in places such as surrounding urban roads, green belts, resident living areas and the like, so that the pollution is caused to municipal environments and resident living areas, and the urban environment and the normal life of residents are influenced.
In order to control the drilling fluid of the exploration hole and avoid random discharge of the drilling fluid, the common processing mode at present is to firstly set up a surrounding baffle around the outside of the operation range of the drilling machine to shield the visual field, then to form an annular soil wall by piling soil at the orifice of the exploration hole to limit the drilling fluid within the range of the soil wall, then to dig a notch in the annular soil wall and to continue to extend the piled soil from the notch to form a channel, and finally to be communicated with a liquid collecting box. The treatment mode has high requirement on the piling soil, the height of the soil wall is generally higher to ensure enough liquid storage quantity, and the soil wall cannot be stacked closely, so that the drilling fluid is easy to flow out from the gaps of the soil wall. After drilling is finished, the earth wall doped with the hole liquid and the crushed slag is difficult to clean, the environment cannot be polluted, and law enforcement and punishment are very easy to realize. In addition, there is a treatment mode of digging a groove from a drilling hole opening to drain, then digging a water pit for collecting the drilling fluid of the exploration hole, and digging the groove to the water pit to communicate the drilling fluid. However, this method is only suitable for the ground with soil texture, and is difficult to realize on the hardened ground such as asphalt pavement, concrete terrace and the like.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a drilling fluid recovery processing system and a method for exploration drilling, wherein the system directly collects upward slag-carrying drilling fluid from an orifice of the exploration drilling, avoids the drilling fluid from overflowing from the orifice to the ground surface to pollute the environment, and does not need to pile soil in the orifice to intercept or dig grooves to drain the drilling fluid; in addition, the upward slag-carrying drilling fluid and the residual drilling fluid in the core barrel after sampling are purified and recovered into the liquid storage tank through a series of filtering devices for recycling by a slurry pump.
In order to achieve the technical purpose, the invention provides a drilling fluid recycling system for exploration drilling, which is used for recycling drilling fluid in the process of sampling exploration drilling, and is characterized in that: the recovery circulation system comprises a drilling fluid drainage device, a first filtering component, a second filtering component, a third filtering component and a settling tank;
the drilling fluid drainage device comprises a drainage sleeve and a circulating drainage groove, wherein the lower end of the drainage sleeve is provided with a conical butt joint, and a supporting ring plate is arranged at the boundary part of the conical butt joint; the drainage sleeve is inserted into the exploration drilling hole through the conical butt joint opening, and is located on a hole wall hardening layer around the exploration drilling hole opening through the supporting annular plate, and the supporting drainage sleeve is fixedly installed at the exploration drilling hole opening; one port of the circulating drainage groove is communicated with the area of the drainage sleeve at the upper part of the support ring plate, and the other port of the circulating drainage groove is communicated with the liquid inlet of the first filter component and is used for introducing the upward drilling fluid in the process of sampling the exploration drilling holes into the first filter component; the first filtering component is an inclined groove body with upper part high and lower part low, a transverse groove is continuously formed in the inclined bottom surface of the groove body, a liquid inlet of the first filtering component is arranged at the high end, a liquid outlet of the first filtering component is arranged at the bottom end, and the liquid outlet of the first filtering component is communicated with the liquid inlet of the second filtering component; the second filtering component is a square filtering box with a double filtering net, a liquid inlet of the square filtering box is arranged at the upper part of the filtering box, a liquid outlet of the square filtering box is arranged at the lower part of the filtering box, and the liquid outlet is communicated with the liquid inlet of the third filtering component;
the third filtering component comprises a box body structure which is obliquely arranged, the bottom of the lower end of the box body structure is provided with a liquid inlet and is communicated with the liquid outlet of the second filtering component, and the upper part of the high end of the box body structure is provided with a liquid outlet and is communicated with the liquid inlet of the sedimentation box; the liquid inlet and the liquid outlet of the box body structure are communicated through an S-shaped liquid channel arranged in the box body structure, a filtering fine net is arranged in the S-shaped liquid channel, an impeller assembly is arranged at each inflection point part of the S-shaped liquid channel, a power mechanism is arranged on the box body structure, and the power mechanism drives each inflection point part to be provided with the impeller assembly to rotate simultaneously through a transmission mechanism, so that drilling fluid at the liquid inlet of the box body structure is conveyed to the liquid outlet.
The invention further adopts the technical scheme that: the system also comprises a storage and filtration device for sampling samples in the exploration drilling holes, wherein the storage and filtration device for sampling samples comprises a sample storage box, a filtration box and a sample drilling liquid recovery box, the sample storage box is arranged in the filtration box, a plurality of sample storage grooves are formed in the sample storage box, and a plurality of draining holes are formed in the inner groove surface of each sample storage groove; the sample storage box is embedded at a larger liquid inlet opening at the upper part of the filter cavity, each draining hole is communicated with the liquid inlet opening of the filter cavity, and a filter screen is arranged at a smaller liquid outlet opening at the lower part of the filter cavity; the sample drilling fluid recovery box is arranged below the filter box, and the fluid inlet of the sample drilling fluid recovery box is opposite to the fluid outlet of the filter cavity; and (3) receiving the drilling fluid filtered by the exploration drilling sampling sample through the sample drilling fluid recovery box, and pouring the drilling fluid into the drilling fluid drainage device.
The invention has the preferable technical scheme that: the system also comprises a liquid storage tank, wherein the liquid storage tank is used for storing the recovered drilling fluid; the bottom surface of the inner part of the liquid storage tank is a slope, the lowest point of the bottom surface of the slope is adjacent to one side wall, and a liquid drain gate is arranged at the bottom of the side wall; the sedimentation tank is of an upper open type tank body structure, a second butt joint notch matched with a liquid outlet of the third filtering component is formed in one side, adjacent to the open face, of the sedimentation tank, the liquid outlet of the third filtering component is in sealing butt joint with the second butt joint notch, a siphon is arranged in the sedimentation tank and is communicated with the liquid storage tank through the siphon, and a pipe orifice of the siphon is located on the upper side of the middle of the sedimentation tank.
The invention has the preferable technical scheme that: the drainage sleeve is inserted into the hole wall diameter-changing step of the exploration drilling hole through the conical butt joint; the first filtering component is of a groove body structure with a narrow upper part and a wide lower part, the upper end of the first filtering component is provided with a liquid inlet, the lower end of the first filtering component is provided with a liquid outlet, the liquid inlet at the upper end of the first filtering component is in butt joint with one notch of the circulating drainage groove, and the liquid outlet is in butt joint with the liquid inlet of the second filtering component.
The invention has the preferable technical scheme that: the square filter box of the second filter component is of an upper open box body structure, a first butt joint notch matched with the first filter component is arranged at a position, adjacent to the opening, of the square filter box, and a liquid outlet of the first filter component is in butt joint with the first butt joint notch of the square filter box; a horizontal filter screen is arranged in the box body of the square filter box, a liquid outlet of the square filter box is arranged at the bottom of the side surface of the box body, a vertical filter screen is arranged at the liquid outlet, and the horizontal filter screen is arranged at a position lower than the first butt joint notch and higher than the vertical filter screen; the bottom of the square filter box is an inclined slope, and the lower end of the inclined slope is adjacent to the vertical filter screen.
The invention has the preferable technical scheme that: the power mechanism comprises a motor and a main driving belt pulley arranged on an output shaft of the motor, the motor is arranged in the middle of the box body structure through a motor fixing frame, and the main driving belt pulley is a double-groove belt pulley; the impeller assembly comprises an impeller shaft and impellers distributed on the impeller shaft, the impeller shaft is horizontally arranged at the turning part of the S-shaped liquid channel, the length of the impeller shaft is matched with the width of the S-shaped liquid channel, two ends of the impeller shaft are rotatably arranged on the side wall of the box body structure, one end of the impeller shaft extends out of the box body structure, and a key slot is formed in the extending end of the impeller shaft; the box body structure is a strip-shaped box body, the impeller assemblies are provided with four groups, the four groups are respectively arranged at the starting point position, the finishing point position and the two turning positions of the S-shaped liquid channel, two groups of the four groups of impeller assemblies are distributed on two sides of the main driving belt pulley, and the two groups of impeller assemblies on the same side are correspondingly distributed up and down; the transmission mechanism comprises transmission gears respectively arranged at the end parts of the impeller shafts extending out of the box body structure of each group, a first transmission belt and a second transmission belt respectively arranged in two belt mounting grooves of the main driving belt pulley, the transmission gears on the two groups of impeller shafts arranged on the same side of the driving belt pulley are meshed with each other, a transmission wheel is arranged on any group of impeller shafts on each side of the driving belt pulley, and the first transmission belt and the second transmission belt are respectively connected with the two transmission wheel belts in a transmission way; the motor drives the four groups of impeller components to rotate simultaneously through the first transmission belt and the second transmission belt.
The invention has the preferable technical scheme that: the drilling fluid drainage device further comprises a fluid discharge chamber, wherein the bottom surface of the fluid discharge chamber is higher than the inner bottom surface of the circulating drainage groove, the circulating drainage groove is a three-way groove and is provided with three notches; the first notch of the circulating drainage groove is communicated with the upper part of the drainage sleeve, the third notch is connected with the liquid inlet at the upper end of the first filtering component, and upward drilling fluid and residual drilling fluid of the core barrel in the process of exploratory drilling, drilling and sampling are conveyed to the liquid inlet of the first filtering component; and the second notch of the circulating drainage groove is communicated with the liquid discharge chamber and is used for receiving the drilling liquid filtered by the sample storage and filtration device.
The invention has the preferable technical scheme that: the sample storage grooves are semi-cylindrical grooves, and a plurality of sample storage grooves are distributed in the sample storage box in parallel; the filter chamber is the trapezoid cavity of falling, the big accent department on filter chamber upper portion is established to the filter box card, the filter box bottom is equipped with the support column, sample drilling fluid recovery box is located the filter screen under.
In order to achieve the technical aim, the invention provides a drilling fluid recovery processing method for exploration drilling, which uses the drilling fluid recovery processing system for exploration drilling to recycle the drilling fluid in the exploration drilling sampling process, and comprises the following specific steps:
s1, after a drilling machine is in place at a drilling hole, a drilling machine is used for penetrating through a surface hardened layer to form an exploration drilling hole by using a perforated thick-diameter pipe dry drill, then a drainage sleeve is inserted into a hole opening of the exploration drilling hole until a supporting ring plate contacts the surface of the surface hardened layer of the hole wall around the hole opening, and a first filtering part, a second filtering part, a third filtering part, a sedimentation tank and a liquid storage tank are sequentially arranged beside the drilling machine;
s2, replacing a small-diameter core taking pipe, adding drilling fluid into a liquid storage tank, then starting drilling fluid circulation drilling to perform drilling sampling, in the drilling sampling process, enabling a slurry pump to pump the drilling fluid from the liquid storage tank to enter a drill rod, enabling the drilling fluid to flow out of a drill bit at the bottom of a hole and carry cutting substances to return along the wall of the hole, enabling the lower end of a drainage sleeve to be inserted into a hole wall reducing part to become a part of the hole wall by utilizing the diameter-changing operation after drilling, enabling the drilling fluid to continuously return to a circulation drainage groove in the drainage sleeve, enabling the drilling fluid to flow into a first filtering part through the circulation drainage groove and then flow into a second filtering part;
s3, after the drilling fluid in the box body of the second filtering component exceeds half, starting a motor of the third filtering component, and driving an impeller assembly at each inflection point part of the S-shaped fluid channel to rotate by a transmission mechanism, so that the drilling fluid is sucked into the S-shaped fluid channel of the third filtering component, and driven by the rotation acting force of the impeller, the drilling fluid is filtered and lifted to the height of a fluid inlet of a settling tank and flows into the settling tank, and the supernatant fluid in the settling tank is sucked into a liquid storage tank under the siphon action and continuously circulated after the liquid level of the drilling fluid in the settling tank rises and is communicated with a siphon pipe.
The invention has the preferable technical scheme that: in the drilling and sampling process, after the core barrel is full of samples, the drill is lifted, the lower opening of the core barrel is placed in a sample storage groove of a sample storage box, samples are taken out and placed in the sample storage box in a knocking or hydraulic mode, residual drilling fluid in the core barrel enters a filter box through a draining hole in the bottom surface of the sample storage groove, finally flows into a sample drilling fluid recovery box through a filter screen, and then the drilling fluid collected by the sample drilling fluid recovery box is poured into a fluid storage chamber for filtering and recovery.
The bottom surface in the liquid discharging chamber is higher than the inner bottom surface of the circulating drainage groove, so that the drilling fluid is prevented from flowing backwards; the inside of the filter box is an inverted trapezoid space, a filter screen is placed at the converging position of the bottom, and upright posts are arranged around the outside to support the filter box to be separated from the ground; the first filtering component is an inclined slope surface, a continuous transverse groove is formed in the slope surface, the slope top is an upper narrow opening, the slope bottom is a lower wide opening, the upper part is narrow, the lower part is wide, the upper part is high, the lower part is low, the overflow section of the drilling fluid is gradually increased when the slope surface circulates, the flow speed is gradually reduced, the overflow surface is rough, large-particle-size substances carried in the drilling fluid are detained and separated due to the slow flow speed and the friction force, and the residual exploration drilling fluid continuously flows downwards into the second filtering component. The second filtering component is a square filtering box with a double filtering net, drilling fluid flows down from the top, secondary large-grain-size substances are blocked by the horizontal filtering net, the drilling fluid flows to the bottom of the filtering box, the bottom surface of the box is a slope slightly inclined to the right, the drilling fluid flows to the bottom outlet, and the drilling fluid is filtered again through the vertical filtering net at the outlet, so that secondary large-grain-size substances are blocked.
In the invention, the S-shaped channel in the third filter component is provided with the filter washing net, tiny particles are blocked at the upper end of the middle channel, then the upper channel continues to flow upwards, and finally the filtered liquid is lifted twice to enter the fourth filter component. The fourth filtering component is a settling tank and a siphon pipe, the siphon pipe is communicated with the settling tank and the liquid storage tank, the pipe orifice of the siphon pipe is positioned on the upper side of the middle part of the settling tank, after drilling fluid flows into the settling chamber, particles move downwards, clear liquid moves upwards, and after the liquid level of the clear liquid of the drilling fluid contacts the siphon pipe along with the increase of the drilling fluid in the settling tank, the clear liquid of the drilling fluid is sucked into the pipe under the siphon effect and finally flows to the liquid storage tank. The liquid storage tank is used for storing drilling fluid, the slurry pump pumps the drilling fluid for drilling, and the recovered and filtered drilling fluid flows to the slurry pump for continuous recycling. The bottom surface inside the liquid storage tank is a slope, the bottom surface of the slope is close to a side wall, and a liquid draining gate is arranged at the bottom of the side wall, so that waste drilling fluid can be conveniently discharged after drilling is finished.
According to the invention, 100% of the slag-carrying drilling fluid and the residual drilling fluid of the exploration hole of the sampling rock core pipe are recovered, subjected to multistage filtration and precipitation, so that the clean slag-free exploration hole drilling fluid is obtained and returned to the drilling fluid liquid storage tank for continuous recycling. The invention can not only ensure that the earth surface has no drilling fluid discharge and no pollution in the drilling operation range during the investigation in urban and rural areas, but also can filter and recycle the slag-carrying exploration drilling fluid and the residual exploration drilling fluid of the core pipe, thereby reducing the overall consumption of the drilling fluid in the exploration drilling process.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention;
FIG. 2 is a schematic diagram of a drilling fluid drainage component;
FIG. 3 is a cross-sectional view of a drilling fluid drainage component;
FIG. 4 is a schematic diagram of a sample storage filter device;
FIG. 5 is a cross-sectional view of a storage filter device for a sampled sample;
FIG. 6 is a schematic view of a first filter element;
FIG. 7 is a schematic view of a second filter element;
FIG. 8 is a cross-sectional view of a second filter element;
FIG. 9 is a schematic view of the overall structure of a third filter element;
FIG. 10 is a cross-sectional view of the S-shaped channel of the third filter element;
FIG. 11 is a schematic view of a third filter element split construction;
FIG. 12 is a schematic illustration of a third filter element impeller drive split configuration;
FIG. 13 is a schematic view of a fourth filter element;
fig. 14 is a schematic structural view of the liquid storage tank.
In the figure: the drilling fluid drainage device comprises a drilling fluid drainage device, a 11-drainage sleeve, a 111-conical butt joint, a 112-support annular plate, a 12-circulation drainage groove, a 121-first notch, a 122-second notch, a 123-third notch and a 13-drainage chamber; 2-depositing and filtering device for sampling sample, 21-sample storing box, 211-draining hole, 22-filtering box, 221-filtering cavity, 222-filtering net and 23-sample drilling fluid recovery box; 3-a first filtering component, 31-a groove, 32-a narrow liquid inlet and 33-a wide liquid outlet; 4-a second filtering component, 41-a horizontal filtering screen, 42-a vertical filtering screen, 43-a first butt joint notch, 44-an inclined slope; the filter comprises a 5-third filter component, a 51-S-shaped liquid channel, a 52-box structure, a 53-filter fine net, a 54-power mechanism, a 541-motor, a 542-motor fixing frame, a 543-main driving belt pulley, a 544-motor transmission shaft, a 55-rotating impeller set, a 551-impeller set, a 552-impeller transmission shaft, a 553-key slot, a 56-first transmission belt, a 57-second transmission belt, a 58-transmission gear and a 59-transmission wheel; 6-a sedimentation tank, 61-a second butt joint notch, 62-a sedimentation chamber and 63-a siphon; 7-a liquid storage tank and 71-a liquid draining gate; 8, exploration drilling and 81-hole wall reducing steps; 9-pore wall hardening layer.
Detailed Description
The invention is further described below with reference to the drawings and examples. Fig. 1 to 14 are drawn in a simplified manner for the purpose of clearly and briefly illustrating an embodiment of the present invention. The following technical solutions presented in the drawings are specific to embodiments of the present invention and are not intended to limit the scope of the claimed invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
The embodiment provides a drilling fluid recovery processing system for exploration drilling, is used for carrying out recycle to drilling fluid in the exploration drilling 8 drilling sampling process, as shown in fig. 1, recovery circulation system includes drilling fluid drainage device 1, deposit filter equipment 2, first filter component 3, second filter component 4, third filter component 5, sedimentation tank 6 and liquid reserve tank 7. As shown in fig. 2 and 3, the drilling fluid drainage device 1 comprises a drainage sleeve 11, a circulation drainage groove 12 and a drainage chamber 13, wherein a conical butt joint 111 is arranged at the lower end of the drainage sleeve 11, and a supporting annular plate 112 is arranged at the boundary part of the conical butt joint 111; the drainage sleeve 1 is inserted into the exploration drilling hole 8 through the conical butt joint 111 and is located on the hole wall hardening layer 9 around the hole opening of the exploration drilling hole 8 through the supporting annular plate 112, the supporting drainage sleeve 11 is fixedly installed at the hole opening of the exploration drilling hole 8, and the drainage sleeve 1 is inserted into the hole wall reducing step 81 of the exploration drilling hole 8 through the conical butt joint 111 to become a part of the hole wall. The inner bottom surface of the liquid discharge chamber 13 is higher than the inner bottom surface of the circulating drainage groove 12, so that the drilling fluid is prevented from flowing backwards. The circulating drainage groove 12 is a three-way groove and is provided with three notches; the first notch 121 of the circulating drainage groove 12 is communicated with the area of the drainage sleeve 11, which is positioned at the upper part of the supporting annular plate 112, the third notch 123 is connected with the liquid inlet at the upper end of the first filtering component 3, and the second notch 122 of the circulating drainage groove 12 is communicated with the liquid discharge chamber 13 and is used for receiving the drilling liquid filtered by the sample storage and filtering device 2.
As shown in fig. 1, fig. 4 and fig. 5, the storage and filtration device 2 for sampling samples includes a sample storage box 21, a filtration box 22 and a sample drilling fluid recovery box 23, the sample storage box 21 is placed in the filtration box 22, a plurality of sample storage grooves are arranged in the sample storage box 21, and a plurality of draining holes 211 are formed in the inner groove surface of each sample storage groove; the inside of the filter box 22 is provided with a filter cavity 221 with a large upper part and a small lower part, the sample storage box 21 is embedded at a larger liquid inlet opening at the upper part of the filter cavity 221, each draining hole 211 is communicated with the liquid inlet opening of the filter cavity 221, and a filter screen 222 is arranged at a smaller liquid outlet opening at the lower part of the filter cavity 221; the sample drilling fluid recovery box 23 is arranged below the filter box 22, and the fluid inlet of the sample drilling fluid recovery box is opposite to the fluid outlet of the filter cavity 221; the drilling fluid filtered by the exploration drilling sampling sample is received by the sample drilling fluid recovery box 23 and then poured into the drilling fluid drainage device 1. The sample storage grooves are semi-cylindrical grooves, and a plurality of sample storage grooves are distributed in the sample storage box 21 in parallel; the filter cavity 221 is an inverted trapezoid cavity, the filter box 22 is clamped at a large cavity opening at the upper portion of the filter cavity 221, a support column is arranged at the bottom of the filter box 22, and the sample drilling fluid recovery box 23 is located under the filter screen 222.
The embodiment provides a drilling fluid recovery processing system for exploration drilling, as shown in fig. 1 and 6, the first filter component 3 is the slope cell body of high low from top to bottom, is equipped with horizontal recess 31 in succession in the slope bottom surface of cell body, the first filter component 3 is wide down, and the upper end is equipped with feed liquor narrow mouth 32, and the lower extreme is equipped with out liquid wide mouth 33, and the feed liquor narrow mouth 32 of its upper end is docked with one of them notch of circulation drainage groove 12 for in introducing the drilling fluid that exploration drilling 8 drilling sampling in-process was gone up into first filter component 3, go out liquid wide mouth 33 and the feed liquor inlet butt joint of second filter component 4. As shown in fig. 7 and 8, the second filter element 4 is a square filter box with a double filter screen, the liquid inlet is arranged at the upper part of the filter box, the liquid outlet is arranged at the lower part of the filter box, and the liquid outlet is communicated with the liquid inlet of the third filter element 5. The square filter box of the second filter component 4 is of an upper open box body structure, a first butt joint notch 43 matched with the first filter component 3 is arranged at a position, adjacent to the opening, of the square filter box, and a liquid outlet of the first filter component 3 is in butt joint with the first butt joint notch 43 of the square filter box; a horizontal filter screen 41 is arranged in the box body of the square filter box, a liquid outlet of the square filter box is arranged at the bottom of the side surface of the box body, a vertical filter screen 42 is arranged at the liquid outlet, and the horizontal filter screen 41 is arranged at a position lower than the first butt joint notch 43 and higher than the vertical filter screen 42; the bottom of the square filter box is an inclined slope 44, and the lower end of the inclined slope is adjacent to the vertical filter screen 42.
The embodiment provides a drilling fluid recovery processing system for exploration and drilling, as shown in fig. 1, 9 to 12, the third filtering component includes a box structure 52 that is obliquely arranged, a liquid inlet is arranged at the bottom of the lower end of the box structure 52 and is communicated with a liquid outlet of the second filtering component 4, and a liquid outlet is arranged at the upper part of the upper end of the box structure 52 and is communicated with a liquid inlet of the precipitation tank 6; the liquid inlet and the liquid outlet of the box body structure 51 are communicated through an S-shaped liquid channel 51 arranged in the box body structure, a filtering fine net 53 is arranged in the S-shaped liquid channel 51, an impeller assembly 55 is arranged at each inflection point position of the S-shaped liquid channel 51, a power mechanism 54 is arranged on the box body structure 52, the power mechanism 54 drives each inflection point position to be provided with the impeller assembly 55 through a transmission mechanism to rotate simultaneously, and drilling fluid at the liquid inlet of the box body structure 52 is conveyed to the liquid outlet. The power mechanism 54 comprises a motor 541 and a main driving belt pulley 543 arranged on an output shaft of the motor, the motor 541 is arranged in the middle of the box body structure 52 through a motor fixing frame 542, and the main driving belt pulley 543 is a double-groove belt pulley; the impeller assembly 55 comprises an impeller shaft 552 and impellers 551 distributed on the impeller shaft 552, wherein the impeller shaft 552 is horizontally arranged at the corner of the S-shaped liquid channel 51, the length of the impeller shaft is matched with the width of the S-shaped liquid channel 51, two ends of the impeller shaft are rotatably arranged on the side wall of the box structure 52, one end of the impeller shaft extends out of the box structure, and a key slot 553 is arranged at the extending end of the impeller shaft 552; the box structure 52 is a strip-shaped box, the impeller assemblies 55 are provided with four groups, which are respectively arranged at the starting point position, the end point position and the two turning positions of the S-shaped liquid channel 51, two groups of the four impeller assemblies 55 are distributed at two sides of the main driving belt pulley 543, and the two groups of impeller assemblies 55 at the same side are correspondingly distributed up and down; the transmission mechanism comprises transmission gears 58 respectively arranged at the end parts of each group of impeller shafts 552 extending out of the box body structure 52, a first transmission belt 56 and a second transmission belt 57 respectively arranged in two belt installation grooves of the main driving belt pulley 543, the transmission gears 58 on the two groups of impeller shafts 552 arranged on the same side of the driving belt pulley 543 are meshed with each other, transmission wheels 59 are arranged on any group of impeller shafts 552 on each side of the driving belt pulley 543, and the first transmission belt 56 and the second transmission belt 57 are respectively connected with the two transmission wheels 59 in a belt transmission manner; the motor 541 drives the four sets of impeller assemblies 55 to rotate simultaneously through the first and second drive belts 56, 57.
The embodiment provides a drilling fluid recovery processing system for exploration drilling, as shown in fig. 1 and 13, the sedimentation tank 6 is an upper open type tank body structure, a second butt joint notch 61 matched with a liquid outlet of the third filtering component 5 is arranged on one side adjacent to the open surface, the liquid outlet of the third filtering component 5 is in sealed butt joint with the second butt joint notch 61, a siphon 63 is arranged in the sedimentation tank 6 and is communicated with the liquid storage tank 7 through the siphon 63, and a pipe orifice of the siphon 63 is positioned on the middle of the sedimentation tank 6. As shown in fig. 14, the liquid storage tank 7 is used for storing the drilling fluid after recovery treatment; the inner bottom surface of the liquid storage tank 7 is a slope, the lowest point of the bottom surface of the slope is adjacent to one side wall, and a liquid drain gate 71 is arranged at the bottom of the side wall.
The working process of the invention is as follows: introducing slag-carrying drilling fluid in the exploration drilling into the first filtering part through the drilling fluid drainage device 1, gradually increasing the overflow cross section when the drilling fluid circulates on the slope of the first filtering part 3, gradually reducing the flow speed, and keeping and separating large-grain-size substances carried in the drilling fluid due to the slow flow speed and the friction force effect, wherein the rest drilling fluid continuously flows downwards into the second filtering part 4; the horizontal filter screen 41 in the second filter element 4 is positioned in the horizontal direction of the middle part of the box body, drilling fluid flows down from the fluid inlet, secondary large-particle-size substances are blocked, the drilling fluid flows to the bottom of the filter box, the bottom surface of the box is a slope surface which is slightly inclined rightwards, the drilling fluid flows to the right lower side to the fluid outlet at the lower end and enters an S-shaped fluid channel of the third filter element 5, and the vertical filter screen 42 at the fluid outlet blocks small-particle-size substances again. The third filtering part 5 controls the driving belt pulley 543 to rotate by means of the motor 541, power is transmitted to the driving wheels 59 on the two impeller shafts 552 on two sides of the motor 541 by the first driving belt 56 and the second driving belt 57, the driving wheels 59 drive the corresponding impeller shafts 552 to rotate, the impeller shafts 552 transmit power to the impellers 551 and the driving gears 58 arranged on the impeller shafts, the driving gears 58 drive the driving gears meshed with the driving gears to rotate in opposite directions, so that the power is transmitted to the adjacent impeller assemblies below the impeller assemblies 55, and meanwhile the adjacent impeller assemblies are driven to rotate, and the motor 541 drives the four impeller assemblies 55 to rotate simultaneously. Under the action of the rotary impeller, the drilling fluid in the third filter element 5 flows upwards in the bottom channel, flows downwards in the middle channel, meanwhile, a fine filter net 53 is arranged in the middle channel again to block tiny particles at the upper end of the middle channel, then the upper channel continues to flow upwards, and finally the drilling fluid flows into the fourth filter element 6 after two lifting. The fourth filtering component 6 is a settling tank and a siphon 63, the siphon is communicated with the settling tank and the liquid storage tank 7, the pipe orifice of the siphon is positioned on the upper side of the middle part of the settling tank, after drilling fluid flows into the settling chamber from the second butt joint notch 61, particles move downwards, clear liquid moves upwards, and as the drilling fluid in the settling tank increases, the clear liquid level of the drilling fluid contacts the siphon 63 and is sucked into the pipe under the siphon action to finally flow to the liquid storage tank 7. The liquid storage tank 7 is used for storing drilling fluid, the slurry pump pumps the drilling fluid for drilling, and the recovered and filtered drilling fluid flows to the slurry pump for continuous recycling. The bottom surface inside the liquid storage tank is a slope, the slope bottom surface is close to a side wall, and a liquid drain gate 71 is arranged at the bottom of the side wall, so that waste drilling fluid can be conveniently discharged after drilling is finished.
The embodiment provides a drilling fluid recycling method for exploration drilling, which uses the drilling fluid recycling system for exploration drilling to recycle the drilling fluid in the exploration drilling sampling process, and comprises the following specific steps:
s1, after a drilling machine is in place at a drilling hole, a drilling machine is used for penetrating through a surface hardened layer to form an exploration drilling hole by using a perforated thick-diameter pipe dry drill, then a drainage sleeve is inserted into a hole opening of the exploration drilling hole until a supporting ring plate contacts the surface of the surface hardened layer of the hole wall around the hole opening, and a first filtering part, a second filtering part, a third filtering part, a sedimentation tank and a liquid storage tank are sequentially arranged beside the drilling machine;
s2, replacing a small-diameter core taking pipe, adding drilling fluid into a liquid storage tank, then starting drilling fluid circulation drilling to perform drilling sampling, in the drilling sampling process, enabling a slurry pump to pump the drilling fluid from the liquid storage tank to enter a drill rod, enabling the drilling fluid to flow out of a drill bit at the bottom of a hole and carry cutting substances to return along the wall of the hole, enabling the lower end of a drainage sleeve to be inserted into a hole wall reducing part to become a part of the hole wall by utilizing the diameter-changing operation after drilling, enabling the drilling fluid to continuously return to a circulation drainage groove in the drainage sleeve, enabling the drilling fluid to flow into a first filtering part through the circulation drainage groove and then flow into a second filtering part;
s3, after the drilling fluid in the box body of the second filtering component exceeds half, starting a motor of the third filtering component, and driving an impeller assembly at each inflection point part of the S-shaped fluid channel to rotate by a transmission mechanism, so that the drilling fluid is sucked into the S-shaped fluid channel of the third filtering component, and driven by the rotation acting force of the impeller, the drilling fluid is filtered and lifted to the height of a fluid inlet of a settling tank and flows into the settling tank, and the supernatant fluid in the settling tank is sucked into a liquid storage tank under the siphon action and continuously circulated after the liquid level of the drilling fluid in the settling tank rises and is communicated with a siphon pipe.
S4, continuously drilling by the drilling machine, and continuously returning drilling fluid returned from the orifice to the filtering device to the liquid storage tank for further circulation; after the core barrel is filled with the sample, the drill is lifted and the residual drilling fluid in the barrel is recovered. And continuing to drill down to the depth of the designed hole, and after the drilling is finished, circulating the drilling fluid in the filtering component to the liquid storage tank. The connecting hose at the liquid outlet gate of the liquid storage tank discharges the waste drilling fluid into a municipal sewage pipe network to clean each filter screen and drill cuttings in the tank body.
S5, in the drilling and sampling process, after the core barrel is full of samples, lifting the drill, placing the lower opening of the core barrel into a sample storage groove of a sample storage box, taking out the samples in a knocking or hydraulic mode, placing the samples in the sample storage box, enabling the residual drilling fluid in the core barrel to enter a filter box through a draining hole in the bottom surface of the sample storage groove, finally flowing into a sample drilling fluid recovery box through a filter screen, and pouring the drilling fluid collected by the sample drilling fluid recovery box into a fluid placing chamber for filtering and recovering.
Aiming at the extremely high safe civilized environment-friendly construction requirements during the investigation and field drilling of urban and rural areas, the invention provides an investigation drilling machine operation device with an environment-friendly water-saving structure and an operation method thereof. After being practically popularized and applied to a drilling site of a municipal water supply project investigation engineering, the drilling machine adopting the method can normally filter and circulate drilling fluid in the device in the drilling process, the surface of the earth is not leaked with the drilling fluid to cause pollution in the operation range, meanwhile, the consumption of the drilling fluid is only 1/2-1/3 of the consumption of the drilling machine without adopting the method, and the deeper the drilling depth is, the larger the difference is.
The foregoing description is of one embodiment of the invention and is thus not to be taken as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (10)
1. A drilling fluid recovery processing system for exploration drilling is used for carrying out recycle to drilling fluid in exploration drilling (8) drilling sampling process, its characterized in that: the recovery circulation system comprises a drilling fluid drainage device (1), a first filtering component (3), a second filtering component (4), a third filtering component (5) and a sedimentation tank (6);
the drilling fluid drainage device (1) comprises a drainage sleeve (11) and a circulating drainage groove (12), wherein a conical butt joint (111) is arranged at the lower end of the drainage sleeve (11), and a supporting annular plate (112) is arranged at the boundary part of the conical butt joint (111); the drainage sleeve (1) is inserted into the exploration drilling hole (8) through a conical butt joint (111), and is located on a hole wall hardening layer (9) around the hole opening of the exploration drilling hole (8) through a supporting annular plate (112), and the supporting drainage sleeve (11) is fixedly arranged at the hole opening of the exploration drilling hole (8); one port of the circulating drainage groove (12) is communicated with the area of the drainage sleeve (11) positioned at the upper part of the supporting annular plate (112), and the other port of the circulating drainage groove is communicated with the liquid inlet of the first filtering component (3) and is used for introducing upward drilling fluid in the process of drilling and sampling the exploration drilling hole (8) into the first filtering component (3); the first filtering component (3) is an inclined groove body with high upper part and low lower part, a transverse groove (31) is continuously formed in the inclined bottom surface of the groove body, a liquid inlet of the first filtering component (3) is arranged at the high end, a liquid outlet of the first filtering component is arranged at the bottom end, and the liquid outlet of the first filtering component is communicated with the liquid inlet of the second filtering component (4); the second filter component (4) is a square filter box with a double filter screen, a liquid inlet is arranged at the upper part of the filter box, a liquid outlet is arranged at the lower part of the filter box, and the liquid outlet is communicated with a liquid inlet of the third filter component (5);
the third filtering component comprises a box body structure (52) which is obliquely arranged, the bottom of the lower end of the box body structure (52) is provided with a liquid inlet and is communicated with a liquid outlet of the second filtering component (4), and the upper part of the high end of the box body structure (52) is provided with a liquid outlet and is communicated with a liquid inlet of the sedimentation box (6); the liquid inlet and the liquid outlet of the box body structure (51) are communicated through an S-shaped liquid channel (51) arranged in the box body structure, a filtering fine net (53) is arranged in the S-shaped liquid channel (51), an impeller assembly (55) is arranged at each inflection point position of the S-shaped liquid channel (51), a power mechanism (54) is arranged on the box body structure (52), and the power mechanism (54) drives each inflection point position to be provided with the impeller assembly (55) to rotate simultaneously through the transmission mechanism, so that drilling fluid at the liquid inlet of the box body structure (52) is conveyed to the liquid outlet.
2. A drilling fluid recovery processing system for an exploration borehole as claimed in claim 1, wherein: the system further comprises a storage and filtration device (2) for sampling samples in exploration drilling, wherein the storage and filtration device (2) for sampling samples comprises a sample storage box (21), a filtration box (22) and a sample drilling fluid recovery box (23), the sample storage box (21) is arranged in the filtration box (22), a plurality of sample storage tanks are arranged in the sample storage box (21), and a plurality of draining holes (211) are formed in the inner groove surface of each sample storage tank; a filter cavity (221) with a large upper part and a small lower part is arranged in the filter box (22), the sample storage box (21) is embedded at a larger liquid inlet opening at the upper part of the filter cavity (221), each draining hole (211) is communicated with the liquid inlet opening of the filter cavity (221), and a filter screen (222) is arranged at a smaller liquid outlet opening at the lower part of the filter cavity (221); the sample drilling fluid recovery box (23) is arranged below the filter box (22), and the fluid inlet of the sample drilling fluid recovery box is opposite to the fluid outlet of the filter cavity (221); and after the drilling fluid filtered by the exploration drilling sampling sample is received by the sample drilling fluid recovery box (23), the drilling fluid is poured into the drilling fluid drainage device (1).
3. A drilling fluid recovery treatment system for exploration drilling as claimed in claim 1 or claim 2, wherein: the system also comprises a liquid storage tank (7), wherein the liquid storage tank (7) is used for storing the recovered drilling fluid; the bottom surface of the inner part of the liquid storage tank (7) is a slope, the lowest point of the bottom surface of the slope is adjacent to one side wall, and a liquid drain gate (71) is arranged at the bottom of the side wall; the sedimentation tank (6) is of an upper open type tank body structure, a second butt joint notch (61) matched with a liquid outlet of the third filtering component (5) is arranged on one side, adjacent to the open face, of the sedimentation tank, the liquid outlet of the third filtering component (5) is in sealing butt joint with the second butt joint notch (61), a siphon (63) is arranged in the sedimentation tank (6) and is communicated with the liquid storage tank (7) through the siphon (63), and a pipe orifice of the siphon (63) is located on the middle of the sedimentation tank (6).
4. A drilling fluid recovery treatment system for exploration drilling as claimed in claim 1 or claim 2, wherein: the drainage sleeve (1) is inserted into a hole wall reducing step (81) of the exploration drilling hole (8) through a conical butt joint (111); the first filtering component (3) is of a groove body structure with a narrow upper part and a wide lower part, the upper end of the first filtering component is provided with a liquid inlet narrow opening (32), the lower end of the first filtering component is provided with a liquid outlet wide opening (33), the liquid inlet narrow opening (32) at the upper end of the first filtering component is in butt joint with one of the groove openings of the circulating drainage groove (12), and the liquid outlet wide opening (33) is in butt joint with the liquid inlet opening of the second filtering component (4).
5. A drilling fluid recovery treatment system for exploration drilling as claimed in claim 1 or claim 2, wherein: the square filter box of the second filter component (4) is of an upper opening box body structure, a first butt joint notch (43) matched with the first filter component (3) is arranged at a position, adjacent to the opening, of the square filter box, and a liquid outlet of the first filter component (3) is in butt joint with the first butt joint notch (43) of the square filter box; a horizontal filter screen (41) is arranged in the square filter box, a liquid outlet of the square filter box is arranged at the bottom of the side surface of the box, a vertical filter screen (42) is arranged at the liquid outlet, and the horizontal filter screen (41) is arranged at a position lower than the first butt joint notch (43) and higher than the vertical filter screen (42); the bottom of the square filter box is an inclined slope (44), and the lower end of the inclined slope is adjacent to the vertical filter screen (42).
6. A drilling fluid recovery treatment system for exploration drilling as claimed in claim 1 or claim 2, wherein: the power mechanism (54) comprises a motor (541) and a main driving belt pulley (543) arranged on an output shaft of the motor, the motor (541) is arranged in the middle of the box body structure (52) through a motor fixing frame (542), and the main driving belt pulley (543) is a double-groove belt pulley; the impeller assembly (55) comprises an impeller shaft (552) and impellers (551) distributed on the impeller shaft (552), the impeller shaft (552) is horizontally arranged at the turning part of the S-shaped liquid channel (51), the length of the impeller shaft is matched with the width of the S-shaped liquid channel (51), two ends of the impeller shaft are rotatably arranged on the side wall of the box body structure (52), one end of the impeller shaft extends out of the box body structure, and a key slot (553) is arranged at the extending end of the impeller shaft; the box body structure (52) is a strip-shaped box body, the impeller assemblies (55) are provided with four groups, the four groups are respectively arranged at the starting point position, the finishing point position and the two turning positions of the S-shaped liquid channel (51), two groups of the four groups of impeller assemblies (55) are distributed on two sides of the main driving belt pulley (543), and the two groups of impeller assemblies (55) on the same side are correspondingly distributed up and down; the transmission mechanism comprises transmission gears (58) which are respectively arranged at the end parts of each group of impeller shafts (552) extending out of the box body structure (52), a first transmission belt (56) and a second transmission belt (57) which are respectively arranged in two belt installation grooves of the main driving belt pulley (543), the transmission gears (58) on the two groups of impeller shafts (552) which are arranged at the same side of the driving belt pulley (543) are meshed with each other, transmission wheels (59) are arranged on any group of impeller shafts (552) at each side of the driving belt pulley (543), and the first transmission belt (56) and the second transmission belt (57) are respectively connected with the two transmission wheels (59) in a belt transmission manner; the motor (541) drives the four groups of impeller assemblies (55) to rotate simultaneously through the first transmission belt (56) and the second transmission belt (57).
7. A drilling fluid recovery processing system for exploration drilling as claimed in claim 2, wherein: the drilling fluid drainage device (1) further comprises a fluid discharge chamber (13), wherein the inner bottom surface of the fluid discharge chamber (13) is higher than the inner bottom surface of the circulating drainage groove (12), and the circulating drainage groove (12) is a three-way groove and is provided with three notches; the first notch (121) of the circulating drainage groove (12) is communicated with the upper part of the drainage sleeve (11), the third notch (123) is connected with a liquid inlet at the upper end of the first filtering component (3), and upward drilling fluid and residual drilling fluid of the core tube in the drilling and sampling process of the exploration drilling hole (8) are conveyed to a liquid inlet narrow opening (32) of the first filtering component (3); the second notch (122) of the circulating drainage groove (12) is communicated with the liquid discharge chamber (13) and is used for receiving drilling liquid filtered by the sample storage and filtration device (2).
8. A drilling fluid recovery processing system for exploration drilling as claimed in claim 2, wherein: the sample storage grooves are semi-cylindrical grooves, and a plurality of sample storage grooves are distributed in the sample storage box (21) in parallel; the filter cavity (221) is an inverted trapezoid cavity, the filter box (22) is clamped at a large cavity opening on the upper portion of the filter cavity (221), a supporting column is arranged at the bottom of the filter box (22), and the sample drilling fluid recovery box (23) is located under the filter screen (222).
9. A drilling fluid recovery processing method for exploration drilling is characterized in that: the method uses the drilling fluid recovery processing system for exploration drilling according to any one of claims 1 to 6 to recover and utilize the drilling fluid in the exploration drilling sampling process, and comprises the following specific steps:
s1, after a drilling machine is in place at a drilling hole, a drilling machine is used for penetrating through a surface hardened layer to form an exploration drilling hole by using a perforated thick-diameter pipe dry drill, then a drainage sleeve is inserted into a hole opening of the exploration drilling hole until a supporting ring plate contacts the surface of the surface hardened layer of the hole wall around the hole opening, and a first filtering part, a second filtering part, a third filtering part, a sedimentation tank and a liquid storage tank are sequentially arranged beside the drilling machine;
s2, replacing a small-diameter core taking pipe, adding drilling fluid into a liquid storage tank, then starting drilling fluid circulation drilling to perform drilling sampling, in the drilling sampling process, enabling a slurry pump to pump the drilling fluid from the liquid storage tank to enter a drill rod, enabling the drilling fluid to flow out of a drill bit at the bottom of a hole and carry cutting substances to return along the wall of the hole, enabling the lower end of a drainage sleeve to be inserted into a hole wall reducing part to become a part of the hole wall by utilizing the diameter-changing operation after drilling, enabling the drilling fluid to continuously return to a circulation drainage groove in the drainage sleeve, enabling the drilling fluid to flow into a first filtering part through the circulation drainage groove and then flow into a second filtering part;
s3, after the drilling fluid in the box body of the second filtering component exceeds half, starting a motor of the third filtering component, and driving an impeller assembly at each inflection point part of the S-shaped fluid channel to rotate by a transmission mechanism, so that the drilling fluid is sucked into the S-shaped fluid channel of the third filtering component, and driven by the rotation acting force of the impeller, the drilling fluid is filtered and lifted to the height of a fluid inlet of a settling tank and flows into the settling tank, and the supernatant fluid in the settling tank is sucked into a liquid storage tank under the siphon action and continuously circulated after the liquid level of the drilling fluid in the settling tank rises and is communicated with a siphon pipe.
10. A drilling fluid recovery treatment method for exploration drilling as claimed in claim 9, wherein: in the drilling and sampling process, after the core barrel is full of samples, the drill is lifted, the lower opening of the core barrel is placed in a sample storage groove of a sample storage box, samples are taken out and placed in the sample storage box in a knocking or hydraulic mode, residual drilling fluid in the core barrel enters a filter box through a draining hole in the bottom surface of the sample storage groove, finally flows into a sample drilling fluid recovery box through a filter screen, and then the drilling fluid collected by the sample drilling fluid recovery box is poured into a fluid storage chamber for filtering and recovery.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311221106.XA CN117307065A (en) | 2023-09-21 | 2023-09-21 | Drilling fluid recovery processing system and method for exploration drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311221106.XA CN117307065A (en) | 2023-09-21 | 2023-09-21 | Drilling fluid recovery processing system and method for exploration drilling |
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| CN117307065A true CN117307065A (en) | 2023-12-29 |
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