CN115045640A - Device and method for pulling screen pipe in opposite directions through penetrating drilled holes - Google Patents
Device and method for pulling screen pipe in opposite directions through penetrating drilled holes Download PDFInfo
- Publication number
- CN115045640A CN115045640A CN202210733803.2A CN202210733803A CN115045640A CN 115045640 A CN115045640 A CN 115045640A CN 202210733803 A CN202210733803 A CN 202210733803A CN 115045640 A CN115045640 A CN 115045640A
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- Prior art keywords
- screen pipe
- bearing
- drilling
- sieve tube
- pulling
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Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000149 penetrating effect Effects 0.000 title abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 46
- 239000003245 coal Substances 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000005406 washing Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 9
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
Abstract
The invention relates to a device and a method for pulling a screen pipe in a penetrating drilling hole. The invention realizes that the sieve tube is put while punching while drilling, the sieve tube is fixed by drilling the drill rod, drilling cuttings are convenient to clean in the sieve tube putting process, and meanwhile, the sieve tube is dragged in a protective mode, so that the safety and the success rate of sieve tube putting are improved. The problem that the effective lowering depth of the sieve tube after hole withdrawal cannot be guaranteed in the common sieve tube lowering process is also solved, and the problem that the diameter of the sieve tube lowered in a drilling tool along with the sieve tube lowering process is limited is solved. The pair of pulling screen pipe laying devices can realize high-efficiency and quick screen pipe laying of a soft coal seam (coal seam) through drilling, and has the advantages of simple equipment, convenience in operation, controllable risk and remarkable field application effect.
Description
Technical Field
The invention relates to a device and a method for pulling a screen pipe in a penetrating drilling hole mode, and belongs to the field of coal mine underground gas extraction technology and engineering.
Background
The broken soft coal seam drilling wall has poor stability, the hole wall is easy to collapse after hole forming, a gas extraction channel is blocked, and the gas extraction effect of the drilling hole is seriously influenced. The screen pipe protecting hole is a main means for solving the problem practically at present, but the common screen pipe descending process is difficult to ensure the effective descending depth of the screen pipe after hole withdrawal, while the screen pipe descending technical method while drilling in a drilling tool is limited by the drilling tool, the diameter of the screen pipe is small, and the effective extraction drift diameter is limited.
Aiming at the relevant process characteristics of underground gas extraction, the invention researches and designs a counter-pulling screen pipe descending device suitable for penetrating drilling by deep research and combining experience and achievement of a coal mine underground gas prevention and control technology for many years, provides a screen pipe descending method without twisting and dragging during the drilling, realizes high-efficiency and quick screen pipe descending aiming at penetrating drilling of a soft coal seam (along the coal seam), and has the advantages of no limitation of the inner diameter of a drill pipe, large drift diameter, simple equipment, convenient operation, controllable risk and obvious field application effect.
Disclosure of Invention
The invention aims to solve the technical problems that the effective lowering depth is difficult to ensure in the screen pipe lowering process, the diameter of a screen pipe is small, the effective extraction drift diameter is limited and the like, and provides a device and a method for pulling down the screen pipe in a counter-pulling manner through a penetration drill hole. The device and the method mainly comprise a rotation stopping base assembly connected with a drill rod, an inner lining gasket ring and an outer buckling pressure pad fastening cover, wherein the inner lining gasket ring is used for extruding and clamping the sieve tube, the base assembly mainly comprises an inner clamping center column, a pressure bearing base and a rotary pressure bearing sleeve disc, the device and the method can realize the quick connection of the drill rod and the sieve tube, the drill rod is separated from the sieve tube in a rotating mode, the drill hole independently rotates without applying rotary power to the sieve tube, the drill rod pulls and pulls the sieve tube to enter the drill hole, and the drill hole is flushed through a water passage in the drill rod, a water passage in the device and a water outlet hole.
In order to solve the problems, the scheme of the invention is as follows:
a through-bore split screen apparatus comprising:
the outer buckle fastening cover is provided with a hollow hole of the pressure pad fastening cover, and the side wall of the outer buckle fastening cover is provided with an outer screw thread of the pressure pad fastening cover;
the base assembly comprises a pressure bearing base, an inner clamping center column and a rotary pressure bearing sleeve disc, wherein an inner screw thread connected with an external screw thread of the pressure pad fastening cover is arranged in the pressure bearing base; one end of the inner clamping center column is used for connecting a sieve tube, the other end of the inner clamping center column is connected with the pressure bearing base, an upper end bearing disc is arranged at the upper end of the rotary pressure bearing sleeve disc, the lower end of the rotary pressure bearing sleeve disc axially penetrates through the pressure bearing base and is provided with a screw thread used for being connected with a drill rod, and the upper end bearing disc is connected to the pressure bearing base through a pressure bearing.
Preferably, in the above mentioned device for pulling down a screen pipe through a through-hole, the upper end of the inner clamping center pillar is provided with a bulge with an increased diameter, the lower end of the inner clamping center pillar is provided with a pillar bottom outer screw thread, and the pillar bottom outer screw thread is connected with the pressure bearing base inner screw thread of the pressure bearing base.
Preferably, in the above mentioned screen pipe device for through drilling and counter pulling, the lower end of the inner clamping center pillar is provided with an inner clamping center pillar chassis, and the bottom outer screw thread is arranged on the side wall of the inner clamping center pillar chassis.
Preferably, the screen pipe device is pulled down by penetrating the drilled hole, the bearing base comprises an upper part and a lower part which are connected through a lower bearing of the base, the bottom of the inner clamping center pillar is connected with the upper part of the bearing base, the upper end bearing disc is connected to the bearing base through the bearing, and the lower end of the rotary bearing sleeve disc penetrates through the lower part of the bearing base.
Preferably, in the above device for pulling down a screen pipe through a counter-pull penetrating drill hole, a water outlet is arranged at the lower part of the pressure-bearing base, and a water passage is arranged in the pressure-bearing base connected with the water outlet, the water passage is communicated with a water guide hole of a rotary pressure-bearing sleeve disc, and the water guide hole of the rotary pressure-bearing sleeve disc is located in a space between the end part of a drill rod and the rotary pressure-bearing sleeve disc.
Preferably, the above-mentioned device for pulling down screen pipe by penetrating drilling hole pair further comprises: the inner liner ring is positioned in a hollow opening of the pressing pad fastening cover of the outer fastening cover, and the inner liner ring is an opening type funnel-shaped ring at one side.
Preferably, the device for pulling down the screen pipe through the penetrating drill hole comprises a positioning screw chuck, and the lower end of the rotary pressure-bearing sleeve disc penetrates through the pressure-bearing base and is fixed by the positioning screw chuck.
A construction method for carrying out perforation and opposite pulling on a screen pipe based on the device comprises the following steps: the operation of the drill withdrawal and the screen pipe lowering are synchronous, the drill withdrawal is started after the screen pipe is fastened by pulling the screen pipe lowering device through the penetrating drill hole, the screen pipe is driven to enter the coal seam drill hole, and the screen pipe is sequentially connected.
Preferably, in the construction method for performing the through drilling and pulling of the screen pipe, the drilling, punching and hole washing operations are performed through the inner passage of the drill rod of the drilling machine and the punched holes arranged outside the clamping seat.
Preferably, in the construction method for performing the through drilling and pulling the screen pipe, after the screen pipe is pulled out, the device for pulling the screen pipe through the through drilling and pulling is detached, and the screen pipe is continuously pumped from any one side of the working face and the drill hole on the other side is blocked.
Compared with the prior art, the invention has the beneficial effects that: the sieve tube is arranged while punching while drilling is achieved, the sieve tube is fixed when the drill rod drills, drilling cuttings can be cleaned conveniently in the sieve tube arranging process, the sieve tube is dragged in a protective mode, and the safety and the success rate of sieve tube arrangement are improved. The problem that the effective lowering depth of the sieve tube after hole withdrawal cannot be guaranteed in the common sieve tube lowering process is also solved, and the problem that the diameter of the sieve tube lowered in a drilling tool along with the sieve tube lowering process is limited is solved. The pair of pulling screen pipe laying devices can realize high-efficiency and quick screen pipe laying of a soft coal seam (coal seam) through drilling, and has the advantages of simple equipment, convenience in operation, controllable risk and remarkable field application effect.
Drawings
FIG. 1 is a schematic view of the principal construction of the through-hole screen apparatus of the present invention;
FIG. 2 is a schematic view of a pressure pad securing cover;
FIGS. 3-4 are schematic views of an inner backing ring;
FIG. 5 is a schematic view of the base assembly;
FIGS. 6-9 are schematic views of the structure of the base assembly;
FIG. 10 is a schematic view of a waterway according to an embodiment of the present invention.
In the figure, 1, a sieve tube; 2. a pressure pad fastening cover; 3. a lining pad ring; 4. a base assembly; 5. a drill stem; 6. a hollow opening of the pressure pad fastening cover; 7. the pressing pad fastening cover is externally connected with a screw thread; 8. a resistance-increasing skewed tooth group of the lining backing ring; 9. the inner liner ring is provided with a telescopic side notch; 10. the middle column is clamped in the sieve tube of the base assembly; 11. an internal thread of the base assembly; 12. a rotary pressure-bearing sleeve disc of the base assembly is internally connected with a drilling screw thread; 13. a pressure bearing base; 14. a rotary pressure-bearing sleeve disc 15 and a positioning screw thread chuck; 16. the sieve tube inner clamping center column bulges, 17, the sieve tube inner clamping center column bottom outer screw thread, 18, a rotary pressure bearing sleeve disc bearing disc, 19, a rotary pressure bearing sleeve disc water guide hole, 20, a rotary pressure bearing sleeve disc outer screw thread, 21, a pressure bearing base inner screw thread, 22, a pressure bearing base pressure bearing disc bearing, 23, a pressure bearing base inner water passage, 24, a pressure bearing base inner water passage water outlet, 25, a base lower bearing, 26 and a positioning screw thread chuck inner screw thread.
Detailed Description
The embodiment aims at the problem that a screen pipe is difficult to be fed in a broken soft coal seam gas extraction drill hole under a coal mine, the embodiment of the screen pipe feeding device is pulled in a penetrating drill hole mode, and a matched penetrating type drilling construction and opposite pulling type screen pipe feeding process method is provided. The device mainly comprises an inner sieve tube clamping seat for connecting a drill rod, an inner lining gasket ring for fixing the sieve tube and an outer buckle fastening cover, has a simple structure, is simple and convenient to operate, and is suitable for all underground coal mine drilling machines.
The screen pipe pulling-down device for the through drill hole is constructed by three parts, one end of the screen pipe pulling-down device can be connected with a drill rod, the other end of the screen pipe pulling-down device can be connected with a fastening screen pipe, and the screen pipe is pulled into the drill hole through dragging of the drill rod. One end connected with the drill rod is a clamping seat in the sieve tube, and one end connected with the drill rod by the clamping seat in the sieve tube is a drill rod female screw which is connected with the drill rod through a screw thread; the other end is internally provided with a screen pipe inner clamping seat, the middle part is provided with an inner liner ring, the outside is provided with an outer fastening cover, the outer fastening cover is hollow and can be penetrated by the screen pipe, and the outer fastening cover is connected with the screen pipe inner clamping seat through a screw thread.
One end of the clamping seat in the sieve tube is provided with a drill rod screw thread which can be connected with a drill rod male thread, and the interior of the clamping seat is communicated with an internal passage of the drill rod; the center of the shaft at the other end is provided with a protruded variable-diameter clamping column, the head and root sections are thinner than the inner diameter of the sieve tube, the middle section is slightly thicker than the inner diameter of the sieve tube, the clamping column can clamp the sieve tube with the inner liner ring, the outer side of the shaft is provided with a fastening screw thread, and the screw thread is provided with enough space for fully fastening an outer fastening cover; the clamping seat is annularly provided with a plurality of reverse inclined punching ports along the outer part, and the reverse inclined punching ports are communicated with the inner passage of the drill rod and can be used for hole wall washing and hole washing operation.
Wherein, inside backing ring is toughness side open-ended infundibulate ring, overlaps on the screen pipe, arranges in outer knot fastening cover in, and uncovered side top cover is on the interior cassette card post of screen pipe, and along with the screwing up of outer knot fastening cover, inside backing ring side opening shrink, and interior external diameter diminishes, can fully block and fasten the fixed screen pipe.
The outer buckle cover is a hollow cap structure with screw threads, the sieve tube passes through the hollow cap structure, the screw threads can be connected with the fastening screw threads of the inner clamping seat of the sieve tube, and the inner lining ring is clamped and contracted through screwing of the screw threads, so that the sieve tube is fully clamped and fixed.
Wherein the coal seam is drilled to penetrate the working face (inclined), and the drill bit is replaced at the opposite side to pull the screen pipe device for the penetrated drill hole.
The screen pipe device is pulled and fastened by penetrating drill holes, then the screen pipe starts to be pulled back, the screen pipe is driven to enter a coal seam to be drilled, the screen pipe is connected in sequence, during the drilling, punching and hole washing operations can be carried out through the inner passage of a drill rod of the drilling machine and the punched holes arranged on the outer side of the clamping seat, the drilling is prevented from being blocked by coal slag, and the screen pipe feeding efficiency is improved.
After the screen pipe is pulled out, the screen pipe pulling device is pulled down by penetrating the drilled holes in a detaching mode, the screen pipe can be continuously pulled out through any one side of the working face, and the drilled holes in the other side can be plugged.
The present embodiment will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the fastening cover 2 of the pressure pad is a hollow cap structure with external screw threads, the hollow opening 6 of the fastening cover of the pressure pad can be used for the sieve tube 1 to pass through, the external screw threads 7 of the fastening cover of the pressure pad can be connected with the internal screw threads 11 of the base assembly, and the internal lining ring 3 is clamped and contracted by screwing through the screw threads, so that the sieve tube and the clamping central column 10 in the sieve tube of the base assembly are fully clamped and fixed;
The base assembly 4 mainly comprises a screen pipe inner clamping center column 10, a pressure bearing base 13, a rotary pressure bearing sleeve disc 14 and a positioning screw thread chuck 15. One end of the drill rod is connected with the pressure pad fastening cover 2 through an internal thread 11 which is generally supported by the base, and the other end of the drill rod is connected with the drill rod 5 through a rotary pressure-bearing sleeve disk internal drilling thread 12. The screen pipe inner clamping center column 10 is composed of a bulge 16 with a diameter changed at the upper end and a column bottom outer screw thread 17 at the lower end, and is connected with a pressure bearing base inner screw thread 21 of a pressure bearing base 13 through the column bottom outer screw thread 17. The bearing base 13 is formed by connecting an upper part and a lower part through a base lower bearing 25, the two parts can independently and freely rotate, and the whole bearing base is in a transparent bottom bowl shape. The rotary pressure-bearing sleeve disc 14 is composed of an upper end bearing disc 18 and lower ends provided with inner and outer screw threads 12 and 20, and is integrally in a cap shape. The rotary bearing sleeve disc 14 is arranged in the bearing base 13, the rotary bearing sleeve disc bearing disc 14 is arranged on a bearing disc bearing 22 of the bearing base, and an outer screw thread part 20 of the rotary bearing sleeve disc penetrates out of the bearing base 13 and is fastened by a positioning screw thread chuck 15 through an inner screw thread 20. After the drill rod 5 is connected with the drilling screw thread 12 in the rotary pressure-bearing sleeve disc, the water path is communicated with the water guide hole 19 of the rotary pressure-bearing sleeve disc through the hollow part of the rotary pressure-bearing sleeve disc, and is communicated with the water passage 23 and the water outlet 24 in the pressure-bearing base, so that hole wall flushing and hole washing operations can be carried out.
By adopting the means, the device is suitable for drilling the gas extraction drill hole of the underground broken soft coal seam of the coal mine and constructing the hole protection of the lower sieve tube. The common screen pipe descending process is difficult to ensure the effective descending depth of the screen pipe after hole withdrawal, and the screen pipe descending method in the drilling tool is limited by the drilling tool, the diameter of the screen pipe is small, and the effective extraction drift diameter is limited. The screen pipe device can realize the high-efficiency and quick screen pipe laying technology of broken soft coal seams (along the coal seams) by utilizing the penetrating drill holes, the screen pipe is not limited by the inner diameter of the drill pipe, the drift diameter is large, the equipment is simple, the operation is convenient, the risk is controllable, and the field application effect is obvious.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the present invention. The structural design is suitable for the full-size type design of the composite heat-insulating pipe.
Claims (10)
1. A through-bore split screen apparatus comprising:
the outer buckle fastening cover (2) is provided with a pressure pad fastening cover hollow opening (6), and the side wall of the outer buckle fastening cover is provided with a pressure pad fastening cover external screw thread (7);
the base assembly (4) comprises a pressure bearing base (13), an inner clamping center column (10) and a rotary pressure bearing sleeve disc (14), wherein an inner screw thread (11) connected with an external screw thread (7) of the pressure pad fastening cover is arranged in the pressure bearing base (13); one end of the inner clamping center column (10) is used for being connected with a sieve tube (1), the other end of the inner clamping center column is connected with the pressure bearing base (13), an upper end bearing disc (18) is arranged at the upper end of the rotary pressure bearing sleeve disc (14), the lower end of the rotary pressure bearing sleeve disc axially penetrates through the pressure bearing base (13) and is provided with a screw thread used for being connected with a drill rod (5), and the upper end bearing disc (18) is connected onto the pressure bearing base (13) through a pressure bearing (22).
2. A counter-pull screen pipe device for through-drilling according to claim 1, wherein the inner clamp center post (10) is provided at its upper end with a bulge (16) of increased diameter and at its lower end with an outer post bottom screw (17), the outer post bottom screw (17) being connected to an inner bearing base screw (21) of the bearing base (13).
3. A split screen hole drilling apparatus as claimed in claim 2, wherein the lower end of the inner clamp center post (10) is provided with an inner clamp center post chassis, and the bottom outer thread (17) is provided on the side wall of the inner clamp center post chassis.
4. A through-drill counter-pull screen pipe apparatus according to claim 1, wherein the bearing pedestal (13) comprises an upper bearing pedestal portion and a lower bearing pedestal portion connected by a pedestal lower bearing (25), the bottom of the inner clamp center post (10) is connected to the upper bearing pedestal portion, the upper bearing disc (18) is connected to the bearing pedestal (13) by a bearing (22), and the lower end of the rotating bearing sleeve disc (14) passes through the lower bearing pedestal portion.
5. A counter-pulling down screen pipe device for through drilling according to claim 4, characterized in that the lower part of the bearing base is provided with a water outlet (24), a water passage (23) in the bearing base connected with the water outlet (24), the water passage (23) in the bearing base is communicated with the water guide hole (19) of the rotary bearing sleeve disc, and the water guide hole (19) of the rotary bearing sleeve disc is positioned in the space between the end of the drill rod (5) and the rotary bearing sleeve disc (14).
6. A through-bore hole counter-pulling screen apparatus as claimed in claim 4, further comprising: the inner gasket ring (3), the inner gasket ring (3) is located in the pressing pad fastening cover hollow opening (6) of the outer fastening cover (2), and the inner gasket ring (3) is a one-side opening type funnel-shaped ring.
7. A counter-pulling screen pipe apparatus for through-drilling according to claim 4, further comprising a positioning screw chuck (15), wherein the lower end of the rotary bearing sleeve (14) passes through the bearing base (13) and is fixed by the positioning screw chuck (15).
8. A method of perforating and screen pipe pulling operations based on the apparatus of any preceding claim, wherein the screen pipe pulling operations are synchronized with the screen pipe pulling operations, and wherein the screen pipe pulling operations are started after the screen pipe is fastened to the perforating and screen pipe pulling apparatus, and the screen pipe is driven into the coal seam for drilling, and the screen pipes are sequentially connected.
9. The method of perforating a pull-down screen according to claim 9, wherein the drilling and the hole-washing are performed by punching holes provided in the inner passage of the drill rod of the drilling machine and outside the clamping seat.
10. The method of making a through-bore pull-down screen of claim 9, wherein: after the screen pipe is pulled out, the screen pipe pulling device is pulled out by detaching the penetrated drilling hole, and the screen pipe is continuously pumped out through any one side of the working surface and the drilling hole on the other side is blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733803.2A CN115045640B (en) | 2022-06-27 | 2022-06-27 | Device and method for penetrating through borehole and opposite-pulling lower screen pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733803.2A CN115045640B (en) | 2022-06-27 | 2022-06-27 | Device and method for penetrating through borehole and opposite-pulling lower screen pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115045640A true CN115045640A (en) | 2022-09-13 |
| CN115045640B CN115045640B (en) | 2024-03-22 |
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| CN202210733803.2A Active CN115045640B (en) | 2022-06-27 | 2022-06-27 | Device and method for penetrating through borehole and opposite-pulling lower screen pipe |
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