CN117988781A - Bottom plate beam-shaped drilling hydraulic screen pipe feeding method - Google Patents
Bottom plate beam-shaped drilling hydraulic screen pipe feeding method Download PDFInfo
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- CN117988781A CN117988781A CN202311784923.6A CN202311784923A CN117988781A CN 117988781 A CN117988781 A CN 117988781A CN 202311784923 A CN202311784923 A CN 202311784923A CN 117988781 A CN117988781 A CN 117988781A
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- 238000005553 drilling Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003245 coal Substances 0.000 claims abstract description 37
- 238000011156 evaluation Methods 0.000 claims abstract description 36
- 239000011435 rock Substances 0.000 claims abstract description 10
- 238000011010 flushing procedure Methods 0.000 claims abstract description 7
- 239000000725 suspension Substances 0.000 claims description 25
- 238000000605 extraction Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000011835 investigation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides a bottom plate beam-shaped drilling hydraulic screen pipe feeding method, which comprises the following steps: s1, arranging a main hole section of a drill hole on a coal seam bottom plate, and opening a branch Kong Shigong on the main hole section; s2, evaluating the branch holes, and performing subsequent treatment after the evaluation is qualified; s3, adding an openable drill bit into the drill rod to drill the drill rod to the bottom of the branch hole, and then, putting a sieve tube with the length equivalent to that of the coal hole section into the drill rod; s4, starting a water pump, flushing the sieve tube to the bottom of the branch hole by using high-pressure water, and hanging the sieve tube at the bottom of the hole through a hanging device; s5, lifting the drill rod, and continuing to construct the lower screen pipe at the branch of the rock hole Duan Kai, and repeating S3-S5 until the lower screen pipe treatment is completed in all branch holes. The invention uses high-pressure water to convey the sieve tube with a certain length to the hole bottom through the large-through hole drill rod, thereby realizing the purpose of only putting the sieve tube on the coal hole section of the branch hole, and solving the contradiction between the base plate beam-shaped drilling main hole branch-opening construction and the branch hole coal Kong Duanxia sieve tube protection hole through the hydraulic sieve tube technology.
Description
Technical Field
The invention relates to the technical field of screen pipe construction, in particular to a bottom plate beam-shaped drilling hydraulic screen pipe feeding method.
Background
Along with deep mining of coal mines in China, the proportion of high-gas broken soft coal beds is larger and larger, the hole wall collapse often caused by breaking of the directional long holes along the coal beds due to soft coal quality is constructed, the main holes are arranged in the layers of the top and bottom plates of the coal beds, and the branch holes penetrate through the layers and enter the coal beds to perform gas outburst elimination and pre-extraction, so that the method is one of effective methods for controlling the gas of the deep broken soft coal beds. However, as the deep coal seam is broken more and more, the coal holes Duan Ye of the branch holes often collapse due to the action of the soft coal seam and the ground stress, so that the extraction effect of the branch holes is greatly affected. From the practice of coal mine gas control, the adoption of screen pipe guard holes is an effective method for solving the problem of hole collapse of broken soft coal layers.
The bottom plate beam-shaped drilling is a gas control directional drilling which is used for arranging a main drilling hole section on a coal bed bottom plate, carrying out coal penetrating through a branch hole and carrying out extraction and outburst elimination on coal roadway strip gas, and because the branch hole needs to be branched at the main hole Duan Kai for continuous construction after the coal penetrating through the branch hole, a conventional method cannot be adopted for carrying out screen pipe protection on the coal penetrating hole section of the branch hole, so that coal Kong Ta hole blockage is caused and extraction effect is influenced. A bottom plate beam drilling hydraulic screen pipe feeding method is designed for the method.
Disclosure of Invention
In order to overcome the defects, the invention provides a bottom plate beam-shaped drilling hydraulic screen pipe feeding method, which aims to solve the problems in the prior art.
The embodiment of the invention provides a bottom plate beam-shaped drilling hydraulic screen pipe feeding method, which comprises the following steps of:
S1, arranging a main hole section of a drill hole on a coal seam bottom plate, and opening a branch Kong Shigong on the main hole section;
S2, evaluating the branch holes, and performing subsequent treatment after the evaluation is qualified;
S3, adding an openable drill bit into the drill rod to drill the drill rod to the bottom of the branch hole, and then, putting a sieve tube with the length equivalent to that of the coal hole section into the drill rod;
S4, starting a water pump, flushing the sieve tube to the bottom of the branch hole by using high-pressure water, and hanging the sieve tube at the bottom of the hole through a hanging device;
S5, lifting the drill rod, and continuing to construct the lower screen pipe at the branch of the rock hole Duan Kai, and repeating S3-S5 until the lower screen pipe treatment is completed in all branch holes.
In a specific embodiment, the evaluating the branch hole in S2 specifically includes the following steps:
S201, evaluating drilling tracks, wherein the drilling track comprises first-level index drilling plane spacing and target layer drilling meeting rate, and the evaluation content is used for specifically evaluating the branching hole tracks from the two sides of the plane and the section of the branching hole;
S202, exploration and evaluation, namely evaluating the condition in the rock stratum after the drilling track evaluation meets the evaluation requirement, and exploration of the collapse column and the vertical hidden water guide structure, wherein the exploration and evaluation comprise normal stratum exploration and evaluation and abnormal stratum evaluation.
In a specific embodiment, the drilling plane pitch evaluation in S201 includes a branching hole pitch, a track while drilling monitoring point, a deviation of horizontal projection and design track in a treatment area, and a branching hole end hole point; the target layer drilling meeting rate evaluation comprises rock debris logging identification analysis, while-drilling gamma and actual drilling meeting layer positions.
In a specific embodiment, the exploration and evaluation of the normal stratum in S202 is performed from four secondary indexes of cuttings, logging while drilling, drilling fluid consumption and pressurized water test; the abnormal stratum evaluation comprises seven secondary indexes of comprehensive logging, drilling abnormality, drilling fluid consumption, slurry temperature, in-hole water level observation, water quality change and pressurized water test.
In a specific embodiment, in S3, after the drill rod and the openable drill bit are continuously drilled to the bottom of the branch hole, the method further includes repeatedly flushing the interior of the drill rod with water for a period of time, and then lifting the drill rod away from the bottom of the hole, wherein the lifting distance is not smaller than the total length of the suspension device and the sieve tube.
In a specific embodiment, the step S4 further includes collecting the water flowing out of the branch hole by using a collecting tank, transporting the collecting tank filled with the water by using a cart, and then filtering the water inside the collecting tank for recycling.
In a specific embodiment, the suspension device in S4 includes a suspension body and a connecting component, a compression movable wing panel is arranged in the suspension body, the compression movable wing panel is provided with two pieces of opposite arrangement and can be ejected outwards and retracted from the suspension body, and the connecting component is a connector fixedly connected with one end of the suspension body and a connecting cavity fixedly connected with the other end of the suspension body.
In a specific embodiment, a chamber for accommodating the compressed movable wing pieces is arranged in the suspension body, opposite side walls are arranged on two sides of the chamber, a sliding groove is arranged at the rear part of the side walls, the front ends of the two compressed movable wing pieces are connected to the two side walls through a first pin shaft, the middle rear parts of the two compressed movable wing pieces are respectively connected with a second pin shaft arranged in the sliding groove through a connecting rod, and a powerful spring for providing power is arranged in the second pin shaft.
In a specific embodiment, the step S5 further includes using a screen to pump gas, and the specific steps include:
S501, connecting the outer end of the sieve tube with an inlet of a gas collector through a hose, wherein the gas collector is arranged into a barrel-shaped sealed container, and the sealed container is provided with an outlet and a plurality of inlets; the outlet of the gas collector is connected with a gas pipe through a conduit; the gas collector is connected with the sieve tube in the branch hole through the hose, and the spare inlet, which is not connected with the hose and the sieve tube, of the gas collector is sealed;
S502, connecting a plurality of sections of gas pipes, connecting an air pump and a gas tank at the outlet of the gas pipes, selecting the air pump according to the magnitude of the extraction quantity, extracting the gas in the coal seam through a hose and a screen pipe under the action of negative pressure, and conveying the gas into the gas tank on the ground through the gas pipes.
In a specific embodiment, the outer diameter of the screen is set to 50-70mm and the inner diameter of the screen is set to 44-64mm.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the sieve tube with a certain length is conveyed to the bottom of the hole by using high-pressure water through the large-through hole drill rod, so that the aim of only feeding the sieve tube into the coal hole section of the branch hole is fulfilled, the contradiction between the base plate beam-shaped drilling main hole branching construction and the branch hole coal Kong Duanxia sieve tube protection hole is solved through the hydraulic sieve tube technology, and meanwhile, the situation that the extraction is influenced due to the blocking caused by the hole collapse of the coal hole is solved, thereby being beneficial to improving the extraction efficiency and the extraction quantity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of a suspension device according to an embodiment of the present invention.
In the figure: 1. compressing the movable flap; 2. a connector; 3. a connecting cavity; 4. a chute; 5. a first pin; 6. a connecting rod; 7. and a second pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides a method for forming a bottom plate bundled borehole hydraulic screen, comprising the steps of:
S1, arranging a main hole section of a drill hole on a coal seam bottom plate, and opening a branch Kong Shigong on the main hole section;
S2, evaluating the branch holes, and performing subsequent treatment after the evaluation is qualified;
S3, adding an openable drill bit into the drill rod to drill the drill rod to the bottom of the branch hole, and then, putting a sieve tube with the length equivalent to that of the coal hole section into the drill rod;
S4, starting a water pump, flushing the sieve tube to the bottom of the branch hole by using high-pressure water, and hanging the sieve tube at the bottom of the hole through a hanging device;
S5, lifting the drill rod, and continuing to construct the lower screen pipe at the branch of the rock hole Duan Kai, and repeating S3-S5 until the lower screen pipe treatment is completed in all branch holes.
Specifically, the step of evaluating the branch hole in S2 specifically includes the following steps:
S201, evaluating drilling tracks, wherein the drilling track comprises first-level index drilling plane spacing and target layer drilling meeting rate, and the evaluation content is used for specifically evaluating the branching hole tracks from the two sides of the plane and the section of the branching hole;
S202, exploration and evaluation, namely evaluating the condition in the rock stratum after the drilling track evaluation meets the evaluation requirement, and exploration of the collapse column and the vertical hidden water guide structure, wherein the exploration and evaluation comprise normal stratum exploration and evaluation and abnormal stratum evaluation.
When the method is specifically set, the evaluation of the drilling plane distance in the step S201 comprises branch hole distance, track monitoring points while drilling, deviation of horizontal projection and design track in a treatment area and branch hole final hole points; the target layer drilling meeting rate evaluation comprises rock debris logging identification analysis, while-drilling gamma and actual drilling meeting layer positions.
The normal stratum in S202 is probed and evaluated by four secondary indexes of cuttings, logging while drilling, drilling fluid consumption and pressurized water test; the abnormal stratum evaluation comprises seven secondary indexes of comprehensive logging, drilling abnormality, drilling fluid consumption, slurry temperature, in-hole water level observation, water quality change and pressurized water test.
In some specific embodiments, in the step S3, after the drill rod and the openable drill bit are continuously drilled to the bottom of the branch hole, the method further comprises repeatedly flushing the interior of the drill rod with water for a period of time, and then lifting the drill rod away from the bottom of the hole, wherein the lifting distance is not smaller than the total length of the suspension device and the sieve tube.
In other embodiments, the step S4 further includes collecting the water flowing out of the branch hole by using a collecting tank, transporting the collecting tank filled with the water by a cart, and filtering the water inside the collecting tank for recycling.
In the invention, the suspension device in the step S4 comprises a suspension body and a connecting part, wherein the suspension body is internally provided with two movable compression wings which are oppositely arranged and can be outwards ejected and retracted from the suspension body, and the connecting part is a connector fixedly connected with one end of the suspension body and a connecting cavity fixedly connected with the other end of the suspension body.
It will be appreciated that in other embodiments, a chamber for accommodating the compressed movable fins is provided in the suspension body, opposite side walls are provided on two sides of the chamber, a chute is provided at the rear part of the side walls, the front ends of the two compressed movable fins are connected to the two side walls through a first pin shaft, the middle and rear parts of the two compressed movable fins are respectively connected with a second pin shaft provided in the chute through a connecting rod, and a powerful spring for providing power is provided in the second pin shaft.
In this embodiment, the step S5 further includes using a screen pipe to pump gas, and the specific steps include:
S501, connecting the outer end of the sieve tube with an inlet of a gas collector through a hose, wherein the gas collector is arranged into a barrel-shaped sealed container, and the sealed container is provided with an outlet and a plurality of inlets; the outlet of the gas collector is connected with a gas pipe through a conduit; the gas collector is connected with the sieve tube in the branch hole through the hose, and the spare inlet, which is not connected with the hose and the sieve tube, of the gas collector is sealed;
S502, connecting a plurality of sections of gas pipes, connecting an air pump and a gas tank at the outlet of the gas pipes, selecting the air pump according to the magnitude of the extraction quantity, extracting the gas in the coal seam through a hose and a screen pipe under the action of negative pressure, and conveying the gas into the gas tank on the ground through the gas pipes.
Alternatively, the outer diameter of the screen pipe is set to 50-70mm and the inner diameter of the screen pipe is set to 44-64mm.
The principle and the advantages of the bottom plate beam drilling hydraulic screen tube method are that:
According to the invention, the sieve tube with a certain length is conveyed to the bottom of the hole by using high-pressure water through the large-through hole drill rod, so that the aim of only feeding the sieve tube into the coal hole section of the branch hole is fulfilled, the contradiction between the base plate beam-shaped drilling main hole branching construction and the branch hole coal Kong Duanxia sieve tube protection hole is solved through the hydraulic sieve tube technology, and meanwhile, the situation that the extraction is influenced due to the blocking caused by the hole collapse of the coal hole is solved, thereby being beneficial to improving the extraction efficiency and the extraction quantity.
The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method of bottom plate bundled drilling hydraulic screen pipe, comprising the steps of:
S1, arranging a main hole section of a drill hole on a coal seam bottom plate, and opening a branch Kong Shigong on the main hole section;
S2, evaluating the branch holes, and performing subsequent treatment after the evaluation is qualified;
S3, adding an openable drill bit into the drill rod to drill the drill rod to the bottom of the branch hole, and then, putting a sieve tube with the length equivalent to that of the coal hole section into the drill rod;
S4, starting a water pump, flushing the sieve tube to the bottom of the branch hole by using high-pressure water, and hanging the sieve tube at the bottom of the hole through a hanging device;
S5, lifting the drill rod, and continuing to construct the lower screen pipe at the branch of the rock hole Duan Kai, and repeating S3-S5 until the lower screen pipe treatment is completed in all branch holes.
2. The method for making a bottom plate bundled borehole hydraulic screen as claimed in claim 1, wherein the evaluating branch holes in S2 specifically comprises the steps of:
S201, evaluating drilling tracks, wherein the drilling track comprises first-level index drilling plane spacing and target layer drilling meeting rate, and the evaluation content is used for specifically evaluating the branching hole tracks from the two sides of the plane and the section of the branching hole;
S202, exploration and evaluation, namely evaluating the condition in the rock stratum after the drilling track evaluation meets the evaluation requirement, and exploration of the collapse column and the vertical hidden water guide structure, wherein the exploration and evaluation comprise normal stratum exploration and evaluation and abnormal stratum evaluation.
3. The bottom plate beam drilling hydraulic screen pipe method according to claim 2, wherein the drilling plane pitch evaluation in S201 includes branch hole pitch, track while drilling monitoring points, deviation of horizontal projection and design track in treatment area, branch hole end hole points; the target layer drilling meeting rate evaluation comprises rock debris logging identification analysis, while-drilling gamma and actual drilling meeting layer positions.
4. The method of bottom plate bundled borehole hydraulic screen according to claim 2, wherein the investigation and evaluation of the normal formation in S202 is performed from four secondary indexes of cuttings, logging while drilling, drilling fluid consumption, and pressurized water test; the abnormal stratum evaluation comprises seven secondary indexes of comprehensive logging, drilling abnormality, drilling fluid consumption, slurry temperature, in-hole water level observation, water quality change and pressurized water test.
5. The method of drilling a hydraulic screen pipe with a bundled bottom plate according to claim 1, wherein in S3, after the drill rod and the openable drill bit are continuously drilled to the bottom of the branch hole, the method further comprises repeatedly flushing the inside of the drill rod with water for a period of time, and then lifting the drill rod away from the bottom of the hole, wherein the lifting distance is not smaller than the total length of the suspension device and the screen pipe.
6. The method of forming a bottom plate bundled borehole hydraulic screen according to claim 1, wherein the step S4 further comprises collecting water flowing out of the branch holes by a collecting tank, transporting the collecting tank filled with water by a cart, and filtering the water inside the collecting tank for recycling.
7. The method of making a bottom plate bundled borehole hydraulic screen pipe as set forth in claim 1, wherein the suspension device in S4 comprises a suspension body and a connection member, wherein the suspension body is provided with two movable compression wings which are oppositely arranged and can be ejected and retracted outwards from the suspension body, and the connection member is a connector fixedly connected with one end of the suspension body and a connection cavity fixedly connected with the other end of the suspension body.
8. The method of drilling a hydraulic screen pipe in a bundle shape on a bottom plate according to claim 7, wherein a chamber for accommodating the movable compression wing is arranged in the suspension body, opposite side walls are arranged on two sides of the chamber, sliding grooves are arranged at the rear parts of the side walls, the front ends of the two movable compression wing are connected to the two side walls through first pin shafts, the middle and rear parts of the two movable compression wing are respectively connected with a second pin shaft arranged in the sliding grooves through connecting rods, and powerful springs for providing power are arranged in the second pin shafts.
9. The method of bottom plate bundled borehole hydraulic screen as claimed in claim 1, wherein the step S5 further comprises the step of using the screen to pump out gas, comprising the steps of:
S501, connecting the outer end of the sieve tube with an inlet of a gas collector through a hose, wherein the gas collector is arranged into a barrel-shaped sealed container, and the sealed container is provided with an outlet and a plurality of inlets; the outlet of the gas collector is connected with a gas pipe through a conduit; the gas collector is connected with the sieve tube in the branch hole through the hose, and the spare inlet, which is not connected with the hose and the sieve tube, of the gas collector is sealed;
S502, connecting a plurality of sections of gas pipes, connecting an air pump and a gas tank at the outlet of the gas pipes, selecting the air pump according to the magnitude of the extraction quantity, extracting the gas in the coal seam through a hose and a screen pipe under the action of negative pressure, and conveying the gas into the gas tank on the ground through the gas pipes.
10. A bottom plate bundled borehole hydraulic screen method as claimed in claim 1 wherein the screen outer diameter is set to 50-70mm and the screen inner diameter is set to 44-64mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784923.6A CN117988781A (en) | 2023-12-24 | 2023-12-24 | Bottom plate beam-shaped drilling hydraulic screen pipe feeding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784923.6A CN117988781A (en) | 2023-12-24 | 2023-12-24 | Bottom plate beam-shaped drilling hydraulic screen pipe feeding method |
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| CN117988781A true CN117988781A (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311784923.6A Pending CN117988781A (en) | 2023-12-24 | 2023-12-24 | Bottom plate beam-shaped drilling hydraulic screen pipe feeding method |
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| Country | Link |
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| CN (1) | CN117988781A (en) |
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- 2023-12-24 CN CN202311784923.6A patent/CN117988781A/en active Pending
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