CN113202464B - Geological dessert survey device - Google Patents
Geological dessert survey device Download PDFInfo
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- CN113202464B CN113202464B CN202110039857.4A CN202110039857A CN113202464B CN 113202464 B CN113202464 B CN 113202464B CN 202110039857 A CN202110039857 A CN 202110039857A CN 113202464 B CN113202464 B CN 113202464B
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- 235000021185 dessert Nutrition 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 241000935974 Paralichthys dentatus Species 0.000 claims description 33
- 238000005553 drilling Methods 0.000 claims description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000011435 rock Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 238000004873 anchoring Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 13
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- 235000009508 confectionery Nutrition 0.000 description 7
- 238000011161 development Methods 0.000 description 5
- 235000011850 desserts Nutrition 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
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- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000242541 Trematoda Species 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
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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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
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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
- E21B10/00—Drill bits
- E21B10/02—Core bits
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
-
- 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
- E21B47/00—Survey of boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Soil Sciences (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The application discloses a geological dessert surveys device relates to the geological exploration field. The device comprises: a branch guide tool, a drill string, a delivery tube assembly, and a coring sample; the branch guiding tool comprises a mandrel and a guiding cylinder body, and the mandrel and the guiding cylinder body are fixed through shear nails; the guide cylinder is provided with a centralizing rib and a guide hole, the centralizing rib is used for fixing the branch guide tool on the well wall of the vertical well bore, and the guide hole is used for communicating the inner cavity and the outer space of the guide cylinder; the lower part of the drill string is connected with the upper part of the branch guiding tool, and the drill string is used for lowering the branch guiding tool into the vertical well bore; the pipe conveying assembly comprises a continuous pipe and a traction hydraulic jet drill bit, and the traction hydraulic jet drill bit is arranged at the tail end of the continuous pipe; in the pipe feeding process, a pipe feeding assembly is inserted into the inner cavity of the guide cylinder, the continuous pipe extends to the outside of the guide cylinder through the guide hole, and the traction hydraulic jet drill bit is used for forming a branch borehole on the well wall; coring assemblies are used to drill geological samples through coiled tubing into branch wellbores.
Description
Technical Field
The embodiment of the application relates to the field of geological exploration, in particular to a geological dessert surveying device.
Background
In the geological exploration process, a large-area hydrocarbon-bearing zone and a large-section hydrocarbon-bearing reservoir section are surveyed, wherein the section with better development benefits under the current economic and technical conditions is often provided, the distribution of the section is not likely to be in a slice in the longitudinal direction and the transverse direction, and the sections are geological desserts. With the progress of exploration and development technology, the resource amount of unconventional natural gas can be adopted to continuously increase, so that geological desserts can be effectively determined, the development efficiency is improved, and the method becomes an important development direction of oil and gas exploration and development.
In the related art, the acquisition of stratum data samples is necessary to perform drilling and logging operations, the cost of a single drilling and testing mode is high, and if the testing result is not suitable for exploitation, great loss is caused.
Disclosure of Invention
The embodiment of the application provides a geological dessert survey device. The technical scheme is as follows:
in one aspect, embodiments of the present application provide a geological dessert survey apparatus, the apparatus comprising: branch guiding tools, a drill string, a pipe feeding assembly and a coring assembly;
the branch guiding tool comprises a mandrel and a guiding cylinder body, and the mandrel and the guiding cylinder body are fixed through shear nails; the guide cylinder body is provided with a centralizing rib and a bent guide hole, the centralizing rib is used for fixing the branch guide tool on the wall of a vertical well hole, and the guide hole is used for communicating the inner cavity of the guide cylinder body with the outer space;
a lower portion of the drill string is connected to an upper portion of the branch guiding tool, the drill string being configured to lower the branch guiding tool into the vertical wellbore;
the pipe conveying assembly comprises a continuous pipe and a traction hydraulic jet drill bit, and the traction hydraulic jet drill bit is arranged at the tail end of the continuous pipe; in the pipe feeding process, the pipe feeding assembly is inserted into the inner cavity of the guide cylinder, the continuous pipe extends to the outside of the guide cylinder through the guide hole, and the traction hydraulic jet drill bit is used for breaking rock on a well wall to form a branch well hole;
the coring assembly is for drilling a geological sample through the coiled tubing down the branch wellbore.
In one possible design, the centering ribs include a pressure plate, a plug screw, a locking spring, a locking steel ball, a pre-compression spring, a fluke, and a radial piston;
the pressing plate is provided with a through hole, and the fluke is used for extending out of the through hole and protruding out of the pressing plate;
the outer side of the fluke is provided with a serration groove for anchoring the wall of the vertical borehole, the inner side of the fluke is provided with a blind hole, the outer end of the radial piston is inserted into the blind hole, and the radial piston is used for pressing out the fluke from the inner side of the pressing plate when moving outwards;
an axial groove is formed in the righting rib, axial holes are formed in the upper end and the lower end of the axial groove respectively, and the screw plug is fixed in the axial holes and used for fixing the locking spring;
the upper end and the lower end of the anchor claw are respectively provided with a sinking step, the outer side of the sinking step is provided with a semicircular groove, and when the anchor claw extends out and is anchored on a well wall, the upper half part or the lower half part of the locking steel ball is pressed into the semicircular groove by the locking spring to lock the anchor claw;
the pre-pressing spring is arranged on the sinking step and used for buffering pressure on the pressing plate when the fluke extends outwards.
In one possible design, the centering ribs are respectively arranged at least two heights outside the guide cylinder, and at least two groups of centering ribs are uniformly arranged at the same height of the guide cylinder.
In one possible design, the mandrel is of a hollow structure, the tail end of the mandrel is provided with a guiding cone, and the upper conical surface of the guiding cone is provided with an opening;
the inner wall of the mandrel is provided with a liquid injection hole, the outer wall of the mandrel is provided with a piston hole, the liquid injection hole is communicated with the piston hole, and one end of the radial piston is inserted into the piston hole;
after a plugging ball is thrown into the mandrel through the drill string, the upper conical surface of the leading cone is sealed by the plugging ball;
during anchoring, drilling fluid injected from the drill string to the mandrel flows to the piston hole through the fluid injection hole, and the radial piston is pushed to radially run under the pushing of pressure.
In one possible design, the branch guiding tool is put into a vertical well hole, the mandrel is inserted into the inner cavity of the guiding cylinder, and the guiding hole on the guiding cylinder is in a closed state;
during lifting of the drill string, the shear pin breaks under tension, and the drill string and the mandrel are lifted out of the vertical wellbore.
In one possible design, the pipe feeding assembly comprises a steel wire rope, a hanging ring, the continuous pipe, a core pulling rod, a lock catch, a feeding head, a roller and a rotating pin of the roller;
the lifting ring is arranged at the top of the core pulling rod, and the core pulling rod is connected with the steel wire rope through the lifting ring and is lowered into the vertical well hole;
the coiled tubing and the core pulling rod which are arranged from the ground are clamped by the roller;
the upper part of the guide cylinder body is provided with a buckling groove, and the feeding head is meshed and fixed with the buckling groove through the lock catch;
the roller is arranged in a rectangular sinking groove at the upper part of the feeding head and is used for feeding the continuous pipe and the traction hydraulic jet drill bit downwards into the guide hole through rotation.
In one possible design, in the process of putting into the pipe conveying assembly, the core pulling rod and the feeding head are put into the guide cylinder inner cavity, and when the feeding head integrally enters the guide cylinder inner cavity, the lock catch and the lock groove at the upper part of the guide cylinder are locked;
when the core pulling rod is lifted up through the steel wire rope, the core pulling rod drives the roller to rotate, the roller drives the continuous pipe to move downwards and enter the guide hole, and the continuous pipe bends and extends to the outside of the guide cylinder under the guide of the guide hole.
In one possible design, the apparatus further comprises a grinding assembly including a grinding bit and a flexible shaft;
the grinding bit is connected with the tail end of the flexible shaft, the grinding bit assembly is arranged in the connecting pipe on the ground and is put into the branch well hole, a rotating torque is applied to the flexible shaft on the ground, the flexible shaft continuously rotates in the continuous pipe to transfer the torque, and the grinding bit grinds through the traction hydraulic jet bit under the action of the flexible shaft.
In one possible design, the front end of the coring assembly is provided with a cutting pick, the inner cavity is provided with a V-shaped spring collar, and the coring bit and the flexible shaft are fixedly connected through an end cover;
the coring assembly is placed into the branch wellbore through the flexible shaft, the flexible shaft is used for rotating to drive the coring bit to rotate, and the V-shaped spring clamping ring is used for storing the drilled geological sample in the inner cavity of the coring bit.
The beneficial effects that technical scheme that this application embodiment provided include at least:
when the geological sweet spot surveying device provided by the embodiment of the application is used for geological exploration, a drill string is connected with a branch guiding tool, the branch guiding tool is lowered into a vertical borehole by the drill string, and then the branch guiding tool is anchored on the wall of the vertical borehole by a centralizing rib on the branch guiding tool, so that in the pipe conveying process, a pipe conveying assembly is inserted into an inner cavity of a guiding cylinder body in the branch guiding tool, a continuous pipe of the pipe conveying assembly extends to the outside of the guiding cylinder body under the guidance of a guiding hole in the guiding cylinder body, and further, a rock is broken on the wall by a traction hydraulic jet drill bit at the front end of the continuous pipe to form a branch borehole, so that a geological sample is drilled at the branch borehole by a coring assembly of the lowered continuous pipe; the geological dessert surveying device in the embodiment of the application can directly use the drill string to lower the branch guiding tool into the abandoned old well, drill the branch well holes through the pipe conveying assembly, re-drilling is not needed, and the geological dessert surveying cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates a schematic structural diagram of a geological sweet survey apparatus provided in one exemplary embodiment of the present application;
FIG. 2 illustrates a schematic diagram of a run-in branch guide tool provided in an exemplary embodiment of the present application;
FIG. 3 illustrates a schematic diagram of a drop tube assembly provided in one exemplary embodiment of the present application;
FIG. 4 illustrates a schematic diagram of a drop-in coring assembly provided in an exemplary embodiment of the present application;
FIG. 5 illustrates a schematic diagram of a branch guide tool provided in another exemplary embodiment of the present application;
FIG. 6 is a schematic illustration of a branch guide tool according to another exemplary embodiment of the present application as anchored to a borehole wall;
FIG. 7 illustrates a schematic diagram of a delivery tube assembly provided in accordance with another exemplary embodiment of the present application;
FIG. 8 illustrates a schematic cross-sectional view of an in-feed head provided in accordance with another exemplary embodiment of the present application;
FIG. 9 illustrates a schematic structural view of a grinding bit assembly provided in accordance with another exemplary embodiment of the present application;
FIG. 10 illustrates a schematic structural view of a coring assembly provided in another exemplary embodiment of the present application.
Reference numerals denote:
1-vertical wellbore, 2-branch guide tool, 3-drill string, 4-pipe assembly, 5-branch wellbore, 6-abrasive drilling assembly, 7-coring assembly, 8-geological sample, 9-plugging ball, 201-mandrel, 202-shear pin, 203-guide cylinder, 204-platen, 205-cone, 206-plug screw, 207-locking spring, 208-locking steel ball, 209-pre-compression spring, 210-fluke, 211-radial piston, 2031-button slot, 2032-righting rib, 2033-pilot hole, 401-wire rope, 402-lifting ring, 403-mandrel, 404-coiled tubing, 405-button, 406-head, 407-roller, 408-rotating pin, 409-traction hydraulic jet drill bit, 4061-guide groove, 601-abrasive drill bit, 602-701-702-V spring, 703-pick collar, 704-end cap.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In the related art, geological samples of geological dessert areas are usually obtained by adopting a single drilling mode, however, mechanical equipment such as a drilling platform is required to be used by adopting the single drilling mode, and due to the characteristic that geological desserts are distributed in a non-flaking mode, when a plurality of geological dessert areas are required to be surveyed, the surveying cost is increased by adopting the single drilling test mode, and oil gas desserts cannot be accurately and quickly positioned.
In order to solve the above problems, embodiments of the present application provide a geological dessert survey apparatus in which a branch guide tool may be anchored to the vertical side wall of a abandoned old well, a tubular assembly may drill branch boreholes through the branch guide tool into a geological dessert survey area, and a coring assembly may drill geological samples through the tubular assembly in the geological dessert survey area. By adopting the geological dessert surveying device provided by the embodiment of the application, the utilization of the abandoned old well can be realized, and the surveying cost is reduced and the surveying efficiency is improved by directly drilling branch wellbores on the wall of the abandoned old well to obtain geological samples. The structure and manner of use of the geological sweet survey apparatus will now be described with exemplary embodiments.
Referring to FIG. 1, a schematic diagram of a geological sweet survey apparatus is shown, according to one exemplary embodiment of the present application.
In the vertical well section, the upper end of the branch guiding tool 2 is connected to the lower end of the drill string 3, the branch guiding tool 2 is lowered into the vertical well bore 1 through the drill string 3, and the branch guiding tool 2 is anchored to the wall of the vertical well bore 1.
In the branch wellbore stage, a tubular assembly 4 is lowered into the vertical wellbore 1 and locked with a branch guiding tool 2, and a branch wellbore 5 is drilled in the wall of the vertical wellbore 1.
In the geological sample drilling stage, the coring assembly 7 is lowered into the vertical well bore 1 through the tubular assembly 4 and into the end of the branch well bore 5, and geological samples 8 are drilled in the geological dessert survey area.
Referring to fig. 2, the branch guiding tool 2 includes a mandrel 201 and a guiding cylinder 203, the mandrel 201 and the guiding cylinder 203 are connected and fixed by a shear pin 202, the mandrel 201 is of a hollow structure, the lower end is directly inserted into an inner cavity of the guiding cylinder 203, a righting rib 2032 is arranged on the guiding cylinder 203, the righting rib 2032 is used for anchoring the branch guiding tool 2 on a wall of the vertical wellbore 1, a curved guiding hole 2033 is arranged on the guiding cylinder 203, and the guiding hole 2032 communicates the inner cavity of the guiding cylinder 203 with an external space.
In one possible embodiment, the lower end of the drill string 3 is secured by threading with the mandrel 201 of the branch guiding tool 2, and the apparatus is run into the vertical wellbore 1, and the branch guiding tool 2 is run into the vertical wellbore 1 at the surface through the drill string 3 at the designated location.
The centralizing rib 2032 of the branch guiding tool 2 anchors the branch guiding tool 2 at a designated position, and after the anchoring is completed, the drill string 3 is lifted up, and the shear pin 202 for connecting the drill string 3 and the mandrel 201 breaks under the action of the tensile force, so that the drill string 3 and the mandrel 201 are lifted up to the vertical borehole 1.
Referring to fig. 3, the right side of fig. 3 is a schematic diagram of the pipe feeding assembly 4, and the left side is a schematic diagram of the apparatus for drilling branch boreholes 5. The pipe feeding assembly 4 comprises a continuous pipe 404 and a traction hydraulic jet drill bit 409, the traction hydraulic jet drill bit 409 is welded at the tail end of the continuous pipe 404, the pipe feeding assembly 4 is connected with the guide cylinder 203 of the branch guide tool 2 in the pipe feeding process, four guide holes 2033 are uniformly distributed in the middle of the guide cylinder 203, the guide holes 2033 are communicated with an inner cavity and an outer space, the four guide holes 2033 are arranged to be circular arc tracks and are dispersed in four directions, the continuous pipe 404 enters the outer part of the guide cylinder 203 through the guide holes 2033 of the branch guide tool 2 in the feeding process, and the traction hydraulic jet drill bit 409 at the tail end of the continuous pipe 404 breaks rock into a branch borehole 5 on a borehole wall.
In one possible embodiment, the tubular assembly 4 is lowered into the vertical wellbore 1 by using a winch apparatus at the surface, the tubular assembly 4 is continuously lowered into the vertical wellbore 1 until snap-locking with the guide cylinder 203 of the branch guide tool 2, during which tubular assembly the surface coiled tubing 404 is continuously fed into the vertical wellbore 1 by the winch apparatus, the coiled tubing 404 enters the guide hole 2033 in the guide cylinder 203 and is caused to bend into the exterior of the guide cylinder 203 by the guide hole 2033.
By pumping high pressure fluid into the coiled tubing 404 at the wellhead, the high pressure fluid is injected into the high pressure water jet at the drag hydraulic jet drill bit 409 for hydraulic breaking, the drag hydraulic jet drill bit 409 simultaneously injects two forward and reverse water jets, the forward water jet breaks the rock at the wall of the vertical wellbore 1 and forms the branch wellbore 5, and the reverse water jet provides the traction for the drill bit to advance.
Coiled tubing 404 continues to be run into vertical wellbore 1 until tractor hydraulic jet drill bit 409 drills into the geological dessert survey area and forms branch wellbore 5, and the running is completed.
Referring to fig. 4, coring assembly 7 is lowered into branch wellbore 5 through coiled tubing 404 to drill geological sample 8.
In one possible embodiment, the coring assembly 7 is rotated continuously in the geological dessert survey area to drill the geological sample 8 and brought back to the surface for data analysis by running the coring assembly 7 down the coiled tubing 404 at the wellhead, with the coring assembly 7 entering the geological dessert survey area at the end of the coiled tubing 404.
In summary, when the geological sweet spot surveying device provided by the embodiment of the application is used for geological exploration, firstly, a drill string is connected with a branch guiding tool, the branch guiding tool is lowered into a vertical borehole by using the drill string, and then the branch guiding tool is anchored on the wall of the vertical borehole by using a centralizing rib on the branch guiding tool, so that in the pipe conveying process, a pipe conveying assembly is inserted into an inner cavity of a guide cylinder body in the branch guiding tool, a continuous pipe of the pipe conveying assembly extends to the outside of the guide cylinder body under the guidance of a guide hole in the guide cylinder body, and further, a rock is broken on the wall by using a traction hydraulic jet drill bit at the front end of the continuous pipe to form a branch borehole, so that a geological sample is drilled at the branch borehole by using a coring assembly lowered into the continuous pipe; the geological dessert surveying device in the embodiment of the application can directly use the drill string to lower the branch guiding tool into the abandoned old well, drill the branch well holes through the pipe conveying assembly, re-drilling is not needed, and the geological dessert surveying cost is reduced.
Referring to fig. 5, a schematic structural diagram of a branch guiding tool according to another exemplary embodiment of the present application is shown.
As shown in fig. 5, the centering rib 2032 is provided on the guide cylinder 203, and the branch guide tool 2 is fixed to the well wall by the centering rib 2032 after the apparatus is lowered into a specified position in the well.
In one possible design, at least two sets of centering ribs 2032 are respectively disposed at least at two heights outside the guide cylinder 203, and at least two sets of centering ribs 2032 are uniformly disposed at the same height of the guide cylinder 203, so as to improve stability of the branch guide tool 2 when fixed on the well wall.
The righting rib 2032 includes a platen 204, a plug 206, a locking spring 207, a locking steel ball 208, a preload spring 209, fluke 210, and radial piston 211.
Through holes are formed in the pressure plate 204 in the righting rib 2032, and flukes 210 can extend out of the through holes and protrude out of the pressure plate 204.
The outside of the fluke 210 is provided with a serration for anchoring the wall of the vertical borehole 1, the inside of the fluke 210 is provided with a blind hole, the outer end of the radial piston 211 is inserted into the blind hole, and the radial piston 211 is used for pressing out the fluke 210 from the inside of the pressing plate 204 during radial movement.
An axial groove is arranged in the righting rib 2032, an axial eyelet is respectively arranged at the upper end and the lower end of the axial groove, and a screw plug 206 is fixed in the axial eyelet and used for fixing the locking spring 207.
The upper and lower ends of the fluke 210 are respectively provided with a sinking step, the outer side of the sinking step is provided with a semicircular groove, and when the fluke 210 extends out and is anchored on the well wall, the upper half or the lower half of the locking steel ball 208 is pressed into the semicircular groove by the locking spring 207 to lock the fluke 210.
A preload spring 209 is provided on the submerged step for cushioning pressure against the platen 204 as the fluke 210 extends outwardly.
In one illustrative example, by applying an outward thrust to radial piston 211, radial piston 211 pushes fluke 210 out of the inside of platen 204 after receiving the outward thrust, and pre-compression springs 209 in the submerged steps of the upper and lower ends cushion the pressure of fluke 210 against the platen during expansion of fluke 210, as the outer ends of radial piston 211 are inserted into blind holes of fluke 210.
The fluke 210 is fully extended and anchored to the wall of the vertical borehole 1, and at this time, the upper or lower half of the locking steel ball 208 is pressed into the semicircular groove of the sinking step by the locking spring 207, so that the fluke 210 is kept locked in an anchored state.
Referring to fig. 5, a mandrel 201 of the branch guiding tool 2 is of a hollow structure, a guiding cone 205 is disposed at the end of the mandrel 201, the guiding cone 205 and the mandrel 201 are fixed by screw threads, and an opening is disposed on an upper conical surface of the guiding cone 205.
The inner wall of the mandrel 201 is provided with a liquid injection hole, the outer wall is provided with a piston hole, the liquid injection hole is communicated with the piston hole, and one end of the radial piston 211 is inserted into the piston hole.
In one possible embodiment, the ball 9 is passed through the drill string 3 into the mandrel 201 cavity and seated in the upper cone opening of the lead cone 205 by feeding the ball 9 into the drill string 3.
During the anchoring of fluke 210, drilling fluid is injected from drill string 3 into mandrel 201 and pressure is applied, and the drilling fluid flows under pressure through the injection port to the piston bore and under pressure pushes radial piston 211 radially.
Referring to fig. 2, in the process of lowering the branch guiding tool 2 into the vertical borehole 1 through the drill string 3, the mandrel 201 is inserted into the inner cavity of the guiding cylinder 203, four guiding holes 2033 are uniformly formed in the inner cavity of the guiding cylinder 203, and the guiding holes 2033 are in a closed state; after the branch guide tool 2 is anchored to the borehole wall, the drill string 3 is lifted up, the shear pins 202 connecting the mandrel 201 to the drill string 3 are broken under tension, the drill string 3 and the mandrel 201 are lifted up to the vertical borehole 1, and the apparatus after the drill string 3 and the mandrel 201 are lifted up is shown in fig. 6.
After the drill string 3 and mandrel 201 are set up in the vertical wellbore 1, the running pipe assembly 4 is also connected to the guide cylinder 203 and the lateral wellbore 5 is drilled in the borehole wall.
Referring to fig. 7, a schematic structural diagram of a pipe feeding assembly according to another exemplary embodiment of the present application is shown.
As shown in fig. 7, the pipe feeding assembly 4 includes a wire rope 401, a hanging ring 402, a continuous pipe 404, a core pulling rod 403, a lock catch 405, a feeding head 406, a roller 407, and a rotating pin 408 of the roller 407.
In one possible embodiment, the coiled tubing 404 and the wire rope 401 of the pipe feeding assembly 4 are wound on winch equipment on the ground, one end of the wire rope 401 is connected with the winch equipment when the pipe feeding assembly 4 is lowered, the other end is connected with the hanging ring 402 on the top of the core pulling rod 403, and the pipe feeding assembly 4 is lowered into the well by lowering the wire rope 401 and the coiled tubing 404.
Fig. 8 is a cross-sectional view of the feeding head 406 in fig. 7, in a possible design, the core pulling rod 403 is inserted into the feeding head 406, four rectangular sinking grooves are uniformly arranged at the upper part of the feeding head 406, rollers 407 and a rotating pin 408 are respectively arranged at the middle parts of the four rectangular sinking grooves, four groups of continuous pipes 404 and the core pulling rod 403 which are inserted from the ground are clamped by the rollers 407, and the feeding head 406 is locked by locking catches 405 and buckling grooves 2031 on the guide cylinder 203.
In addition, four guide grooves 4061 are uniformly formed in the core-pulling rod 403, each group of the continuous tubes 404 is respectively attached to the guide grooves 4061, and the continuous tubes 404 can be fed downward into the guide holes 2033 by attaching the guide grooves.
As shown in fig. 3, the ends of each set of coiled tubing 404 are welded with a drag pilot bit 409, the drag pilot bit 409 being adapted to enter pilot hole 2033 and extend outside of the pilot cylinder 203 during the downward feeding of the coiled tubing 404.
In one possible design, the drag hydraulic jet drill bit 409 is provided with injection holes for injecting high pressure water jets in the forward and reverse directions, and when the drag hydraulic jet drill bit 409 contacts the wall of the vertical wellbore 1, high pressure water jets are pumped into the coiled tubing 404 from the surface, the forward injection holes of the drag hydraulic jet drill bit 409 perform hydraulic rock breaking on the wall of the wellbore to form a jet wellbore, and the reverse injection holes inject high pressure water jets in the reverse direction to power the advancement of the coiled tubing 404.
In an application scenario, the pipe feeding assembly 4 is lowered into the vertical well bore 1 through winch equipment, the core drawing rod 403 and the feeding head 406 of the pipe feeding assembly 4 enter the inner cavity of the guide cylinder 203, the whole feeding head 406 enters the inner cavity of the guide cylinder 203 through continuously lowering the pipe feeding assembly 4, and the lock catch 405 on the feeding head 406 and the lock catch 2031 on the upper portion of the guide cylinder 203 are locked in a locking mode.
In the process of feeding the coiled tubing 404, the core rod 403 is pulled away from the feeding head 406 by lifting the steel wire rope 401, the roller 407 is driven to rotate in the process of upward movement of the core rod 403, the roller 407 rotates to attach the four groups of coiled tubing 404 to the guide groove 4061 and feed the coiled tubing 404 downwards into the guide hole 2033, the coiled tubing 404 bends under the action of the guide hole 2033 to enter the external space of the guide cylinder 203, the traction hydraulic jet drill bit 409 breaks rocks in four directions to form a branch borehole 5, the depth of the branch borehole 5 can reach hundreds of meters, and the core rod 403 is continuously lifted until the traction hydraulic jet drill bit 409 enters a geological dessert area to be surveyed.
After formation of branch wellbore 5, it is necessary to collect geological sample 8 at the geological dessert area, and because the end of the running coiled tubing 404 is welded with a drag hydraulic jet drill bit 409, the drag hydraulic jet drill bit 409 located within branch wellbore 5 must also be ground through using grinding bit assembly 6.
Referring to fig. 9, a schematic structural diagram of a grinding assembly according to another exemplary embodiment of the present application is shown.
The grinding drill assembly 6 is composed of a grinding bit 601 and a flexible shaft 602, the flexible shaft 602 can bend and transmit torque in the continuous pipe 404, the outer circle of the grinding bit 601 is provided with a spiral line, and the cutting edge at the front end of the grinding bit 601 is provided with diamond abrasive particles.
In one possible embodiment, the abrasive bit 601 is coupled to the end of the flexible shaft 602, and the abrasive bit 601 wears the drag hydraulic jet bit 409 under the influence of the flexible shaft 602 by placing the abrasive bit assembly 6 into the connection pipe 404 at the surface and running down the branch wellbore 5, applying rotational torque to the flexible shaft 602 at the surface, and continuously rotating the flexible shaft 602 to transmit torque within the connection pipe 404.
After the abrasive drilling assembly 6 grinds the traction hydraulic jet drill bit 409, the flexible shaft 602 in the coiled tubing 404 is pulled out together with the abrasive drilling assembly 6 from the surface, the abrasive drilling assembly 6 is replaced with the coring assembly 7, and the coring assembly 7 is sent from the coiled tubing 404 into the branch wellbore 5 through the flexible shaft 602.
Referring to fig. 10, a schematic structural diagram of a coring assembly provided in another exemplary embodiment of the present application is shown.
The coring assembly 7 is comprised of a pick 701, a V-spring collar 702, a coring bit 703, an end cap 704, and a flexible shaft 602.
The excircle of the coring bit 703 is provided with a spiral line, the front end is provided with a cutting pick 701, the front end of the inner cavity of the coring bit 703 is provided with a V-shaped spring clamping ring 702, the coring bit 703 and the flexible shaft 602 are fixedly connected through an end cover 704, the V-shaped spring clamping ring 702 allows a geological sample 8 to enter the inner cavity of the coring bit 703 in one way, and the V-shaped spring clamping ring 702 has a cutting-off function on the geological sample 8.
In one possible test embodiment, coring assembly 7 is lowered into branch wellbore 5 by flexible shaft 602, flexible shaft 602 rotates to rotate coring bit 703, V-spring collar 702 stores the drilled geological sample 8 in the lumen of coring bit 703, and the geological sample 8 is withdrawn from the surface after drilling.
In summary, in the geological dessert survey device provided by the embodiment of the application, the branch guiding tool can be anchored to the wall of the vertical well bore due to the action of the centralizing ribs on the branch guiding tool, and the down-going coiled tubing can be guided to the outside of the cylinder body due to the action of the guiding holes on the branch guiding tool; in addition, the traction hydraulic jet drill bit at the tail end of the pipe conveying assembly drills branch wellbores on the well wall by jetting high-pressure water jet; the coring assembly drills geological samples from the branch wellbore through the coiled tubing. The geological dessert survey device in the embodiment of the application can directly use the drill string to lower the branch guiding tool into the abandoned old well, drill branch wellbores through the pipe conveying assembly, drill the branch wellbores without re-drilling, and the geological dessert survey cost is reduced.
In connection with the geological sweet spot survey apparatus shown in the above embodiments, the following steps may be included when a surveyor surveys geological samples using the apparatus.
1. The geological sweet spot survey apparatus is lowered into a vertical borehole.
Prior to running the vertical wellbore, survey old well data is determined, including vertical wellbore depth, wellbore wall diameter, lateral wellbore depth, wireline and coiled tubing length, etc.
A geological dessert survey is determined from the measurement data, and a branch guide tool is lowered into a vertical wellbore at a designated location through a drill string.
2. The branch guide tool is anchored to the wall of the vertical borehole.
By throwing the plugging ball into the drill string from the ground, the plugging ball enters the inner cavity of the mandrel through the hollow structure of the drill string and is seated on the conical surface at the upper part of the guide cone.
By pumping drilling fluid into the drill string at the surface and applying pressure, the drilling fluid enters the fluid injection hole and the piston hole from the inner cavity of the mandrel, the radial piston moves radially towards the well wall under the pressure of the drilling fluid, and the radial piston moves to push out the fluke from the inner side of the pressing plate.
By continuing to pump drilling fluid into the drill string until the fluke is fully extended and anchored against the wall of the vertical borehole, the locking steel ball and locking spring lock the fluke in position.
3. Lifting the drill string and withdrawing the mandrel and drill string from the vertical wellbore.
And pulling up the drill string to break the shear pin for connecting the mandrel and the guide cylinder, and pulling out the drill string and the mandrel from the vertical well hole, wherein the guide cylinder is anchored on the well wall of the vertical well hole, and the guide hole on the guide cylinder is exposed.
4. The lower feeding pipe assembly is connected and locked with the guide cylinder body.
The coiled tubing and wireline of the tubular assembly are connected by using a surface winch apparatus and the tubular assembly is run into a vertical wellbore.
The continuous pipe and the core pulling rod of the pipe feeding assembly are clamped by the roller and inserted into the feeding head.
The core drawing rod and the feeding head of the feeding pipe assembly enter the inner cavity of the guide cylinder body, and the feeding head continuously goes deep until the lock catch of the feeding head is locked with the lock groove at the upper part of the guide cylinder body.
5. And (3) feeding the coiled tubing into a coiled tubing, and drilling branch boreholes.
Lifting the steel wire rope through the ground winch equipment, slowly pumping the core pulling rod away from the feeding head by the steel wire rope, driving the roller to rotate in the process of upwards moving the core pulling rod, and continuously feeding the continuous pipe into the vertical well hole.
In the process of upward movement of the core rod, a traction hydraulic jet drill bit welded at the tail end of the continuous pipe is attached to a guide groove on the core rod and downwards enters the guide hole.
The continuous pipe is bent under the action of the guide hole and extends out of the guide cylinder.
High-pressure fluid is pumped into the coiled tubing through the ground surface, the high-pressure fluid is sprayed from the traction hydraulic jet drill bit through the coiled tubing to form forward and reverse high-pressure jet water flows, the forward water jet breaks rock on the well wall of the vertical well bore and forms branch well bores, and the reverse water jet provides traction force for the drill bit to advance.
The core pulling rod is continuously pulled away through the steel wire rope, the continuous pipe is continuously fed in until the core pulling rod is completely pulled away from the feeding head and lifted out of the vertical well hole, and the hydraulic jet drill bit is pulled into the geological dessert area.
6. And (5) feeding the drill bit into a grinding drill assembly, and grinding through the traction hydraulic jet drill bit.
The flexible shaft is introduced into the continuous pipe on the ground, the grinding and drilling assembly is connected to the tail end of the flexible shaft, torque is applied to the flexible shaft in the process of introducing the flexible shaft into the ground, the flexible shaft rotates to drive the grinding and drilling assembly to rotate, and the grinding and drilling assembly enters the branch well hole and reaches the traction hydraulic jet drill bit.
The grinding bit of the grinding assembly continuously rotates through the torque applied by the flexible shaft to grind through the traction hydraulic jet bit.
And the grinding and drilling assembly is brought out of the ground by lifting the flexible shaft out of the ground.
7. And (5) feeding the sample into a coring assembly, and drilling a geological sample.
The coring assembly is secured to the end of the flexible shaft and lowered into the branch wellbore through the coiled tubing.
The coring assembly extends out of the end of the coiled tubing into the geological dessert area under the action of the flexible shaft.
The flexible shaft rotates to drive the coring bit to rotate, and the V-shaped spring clamping ring stores the drilled geological sample in the inner cavity of the coring bit.
And after the geological sample is drilled, the flexible shaft is lifted out, and the coring assembly and the geological sample are brought out of the ground.
The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the invention.
Claims (8)
1. A geological dessert survey apparatus, said apparatus comprising: a branch guiding tool (2), a drill string (3), a pipe conveying assembly (4) and a coring assembly (7);
the branch guiding tool (2) comprises a mandrel (201) and a guiding cylinder body (203), wherein the mandrel (201) is inserted into the inner cavity of the guiding cylinder body (203) and is fixed through a shear pin (202); the guide cylinder body (203) is provided with a centralizing rib (2032) and a bent guide hole (2033), the centralizing rib (2032) is used for fixing the branch guide tool (2) on the well wall of the vertical well bore (1), and the guide hole (2033) is used for communicating the inner cavity and the outer space of the guide cylinder body (203);
the lower part of the drill string (3) is connected with the upper part of the branch guiding tool (2), and the drill string (3) is used for lowering the branch guiding tool (2) into the vertical well bore (1);
the pipe feeding assembly (4) comprises a continuous pipe (404) and a traction hydraulic jet drill bit (409), wherein the traction hydraulic jet drill bit (409) is arranged at the tail end of the continuous pipe (404); in the pipe feeding process, the pipe feeding assembly (4) is inserted into the inner cavity of the guide cylinder body (203), the continuous pipe (404) extends to the outside of the guide cylinder body (203) through the guide hole (2033), and the traction hydraulic jet drill bit (409) is used for breaking rock on a well wall to form a branch well hole (5);
-said coring assembly (7) for drilling a geological sample (8) through said coiled tubing (404) down said branch wellbore (5);
the righting rib (2032) comprises a pressing plate (204), a screw plug (206), a locking spring (207), a locking steel ball (208), a pre-pressing spring (209), a fluke (210) and a radial piston (211);
the pressing plate (204) is provided with a through hole, and the fluke (210) is used for extending out of the through hole and protruding out of the pressing plate (204);
the outer side of the fluke (210) is provided with a saw tooth slot for anchoring the well wall of the vertical well bore (1), the inner side of the fluke (210) is provided with a blind hole, the outer end of the radial piston (211) is inserted into the blind hole, and the radial piston (211) is used for extruding the fluke (210) from the inner side of the pressing plate (204) when in radial movement;
an axial groove is formed in the righting rib (2032), axial holes are formed in the upper end and the lower end of the axial groove respectively, and the screw plug (206) is fixed in the axial holes and used for fixing the locking spring (207);
the upper end and the lower end of the fluke (210) are respectively provided with a sinking step, the outer side of the sinking step is provided with a semicircular groove, and when the fluke (210) stretches out and is anchored on a well wall, the upper half part or the lower half part of the locking steel ball (208) is pressed into the semicircular groove by the locking spring (207) to lock the fluke (210);
the pre-pressing spring (209) is arranged on the sinking step and is used for buffering the pressure of the pressing plate (204) when the fluke (210) extends outwards;
the mandrel (201) is of a hollow structure, the tail end of the mandrel (201) is provided with a guide cone (205), and an opening is formed in the upper conical surface of the guide cone (205);
the inner wall of the mandrel (201) is provided with a liquid injection hole, the outer wall of the mandrel is provided with a piston hole, the liquid injection hole is communicated with the piston hole, and one end of the radial piston (211) is inserted into the piston hole;
after a plugging ball (9) is put into the mandrel (201) through the drill string (3), the upper conical surface of the guide cone (205) is sealed by the plugging ball (9);
during anchoring, drilling fluid injected from the drill string (3) to the mandrel (201) flows to the piston hole through the fluid injection hole and pushes the radial piston (211) to radially run under pressure.
2. The device according to claim 1, wherein the righting ribs (2032) are respectively arranged on at least two heights of the outer part of the guide cylinder (203), and at least two groups of the righting ribs (2032) are uniformly arranged on the same height of the guide cylinder (203).
3. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the branch guiding tool (2) is put into a vertical well hole (1), the mandrel (201) is inserted into the inner cavity of the guiding cylinder body (203), and the guiding hole (2033) on the guiding cylinder body (203) is in a closed state;
during lifting of the drill string (3), the shear pin (202) breaks under tension, and the drill string (3) and the mandrel (201) are lifted out of the vertical wellbore (1).
4. The device according to claim 1, wherein the pipe feeding assembly (4) comprises a wire rope (401), a lifting ring (402), the continuous pipe (404), a core pulling rod (403), a lock catch (405), a feeding head (406), a roller (407) and a rotating pin (408) of the roller (407);
the top of the core pulling rod (403) is provided with the hanging ring (402), and the core pulling rod (403) is connected with the steel wire rope (401) through the hanging ring (402) to be lowered into the vertical well bore (1);
the coiled tubing (404) and the loose core rod (403) which are arranged from the ground are clamped by the roller (407);
the upper part of the guide cylinder body (203) is provided with a buckling groove (2031), and the feeding head (406) is locked with the buckling groove (2031) through the lock catch (405) in a meshed mode;
the roller (407) is arranged in a rectangular sink groove at the upper part of the feeding head (406), and the roller (407) is used for feeding the continuous pipe (404) and the traction hydraulic jet drill bit (409) downwards into the guide hole (2033) through rotation.
5. The device according to claim 4, wherein four guiding grooves (4061) are uniformly formed in the loose core rod (403), four groups of the continuous pipes (404) and the loose core rod (403) which are inserted into the feeding head (406) from the ground are inserted, each group of the continuous pipes (404) is respectively attached to the guiding grooves (4061), and the guiding grooves (4061) are used for guiding the continuous pipes (404) to respectively enter the corresponding guiding holes (2033).
6. The apparatus of claim 4, wherein the device comprises a plurality of sensors,
in the process of entering the pipe conveying assembly (4), the core pulling rod (403) and the feeding head (406) enter the inner cavity of the guide cylinder body (203), and when the feeding head (406) integrally enters the inner cavity of the guide cylinder body (203), the lock catch (405) and the lock groove (2031) at the upper part of the guide cylinder body (203) are locked;
when the core pulling rod (403) is lifted up through the steel wire rope (401), the core pulling rod (403) drives the roller (407) to rotate, the roller (407) drives the continuous pipe (404) to move downwards and enter the guide hole (2033), and the continuous pipe (404) is bent and extends to the outside of the guide cylinder (203) under the guide of the guide hole (2033).
7. The device according to claim 1, further comprising a grinding assembly (6), the grinding assembly (6) comprising a grinding bit (601) and a flexible shaft (602);
the grinding bit (601) is connected with the tail end of the flexible shaft (602), the grinding bit assembly (6) is placed in the continuous pipe (404) on the ground and is lowered into the branch wellbore (5), a rotating torque is applied to the flexible shaft (602) on the ground, the flexible shaft (602) continuously rotates in the continuous pipe (404) to transmit the torque, and the grinding bit (601) grinds through the traction hydraulic jet bit (409) under the action of the flexible shaft (602).
8. The device according to claim 7, characterized in that the front end of the coring assembly (7) is provided with a cutting pick (701), the inner cavity is provided with a V-shaped spring collar (702), and the coring bit (703) and the flexible shaft (602) are fixedly connected through an end cover (704);
the coring assembly (7) is placed into the branch wellbore (5) through the flexible shaft (602), the flexible shaft (602) is used for rotating to drive the coring bit (703) to rotate, and the V-shaped spring clamping ring (702) is used for storing a drilled geological sample (8) in the inner cavity of the coring bit (703).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110039857.4A CN113202464B (en) | 2021-01-13 | 2021-01-13 | Geological dessert survey device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110039857.4A CN113202464B (en) | 2021-01-13 | 2021-01-13 | Geological dessert survey device |
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| CN113202464B true CN113202464B (en) | 2023-07-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7057274A (en) * | 1973-08-29 | 1976-01-08 | Bakerdrill, Inc | Continuous coring system and apparatus |
| US5107942A (en) * | 1991-04-04 | 1992-04-28 | Baker Hughes Incorporated | Inner tube stabilizer for a corebarrel |
| CN102926730A (en) * | 2012-11-13 | 2013-02-13 | 王建生 | Mining method for support pipe following air liquid spraying and drilling into coal bed gas of radial well |
| CN204457764U (en) * | 2015-01-26 | 2015-07-08 | 新奥气化采煤有限公司 | Sampler |
| CN107165622A (en) * | 2017-05-23 | 2017-09-15 | 东营万洋石油科技有限公司 | Acoustic logging system |
| CN211115979U (en) * | 2019-12-04 | 2020-07-28 | 中国地质科学院勘探技术研究所 | Low-disturbance sampling device for various ocean stratums |
-
2021
- 2021-01-13 CN CN202110039857.4A patent/CN113202464B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7057274A (en) * | 1973-08-29 | 1976-01-08 | Bakerdrill, Inc | Continuous coring system and apparatus |
| US5107942A (en) * | 1991-04-04 | 1992-04-28 | Baker Hughes Incorporated | Inner tube stabilizer for a corebarrel |
| CN102926730A (en) * | 2012-11-13 | 2013-02-13 | 王建生 | Mining method for support pipe following air liquid spraying and drilling into coal bed gas of radial well |
| CN204457764U (en) * | 2015-01-26 | 2015-07-08 | 新奥气化采煤有限公司 | Sampler |
| CN107165622A (en) * | 2017-05-23 | 2017-09-15 | 东营万洋石油科技有限公司 | Acoustic logging system |
| CN211115979U (en) * | 2019-12-04 | 2020-07-28 | 中国地质科学院勘探技术研究所 | Low-disturbance sampling device for various ocean stratums |
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