CN112145123B - Underground borehole under-pressure segmented positioning stop device and method - Google Patents
Underground borehole under-pressure segmented positioning stop device and method Download PDFInfo
- Publication number
- CN112145123B CN112145123B CN202010974085.9A CN202010974085A CN112145123B CN 112145123 B CN112145123 B CN 112145123B CN 202010974085 A CN202010974085 A CN 202010974085A CN 112145123 B CN112145123 B CN 112145123B
- Authority
- CN
- China
- Prior art keywords
- plug
- slot
- rod
- groove
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 39
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 17
- 239000000523 sample Substances 0.000 claims description 8
- 238000011161 development Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 230000018109 developmental process Effects 0.000 claims 1
- 230000011218 segmentation Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000010030 laminating Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 238000007569 slipcasting Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of mineral engineering, in particular to a blocking device and a blocking method for sectionalized positioning under pressure in a downhole drill hole, which comprises a plug rod change head, wherein a lower slot is arranged on the plug rod change head, a lower clamping groove is communicated with the lower slot, a connecting block is inserted in the lower slot, a sliding groove is arranged on the connecting block, a pressing block is connected in the sliding groove in a sliding manner, a spring is fixedly connected to the pressing block, the sliding groove is communicated with a through groove, a clamping hook is fixedly arranged on the pressing block, the connecting block is inserted into an upper slot of a plug shell, the upper slot is communicated with an upper clamping groove, and a blocking plug is fixedly arranged on the plug shell; the fixed point shutoff of water course is carried out through sectional type's slip casting method, can avoid thick liquid pressure too big and cause the water course to enlarge to will stop in the stopper puts down the drilling, use the rotating tube drive lead screw, can be from stopping the inside production pressure of stopper, make to stop the stopper inflation laminating on the drilling pore wall, seal drilling, prevent that the thick liquid from leaking outward.
Description
Technical Field
The invention relates to the technical field of mineral engineering, in particular to a downhole under-pressure segmented positioning and stopping device and method.
Background
When the drill hole is not dug, the coal rock mass is in a load balance state, the tunneling of the drill hole destroys the state of the coal mass, the coal rock mass directly receiving force on the wall surface of the drill hole is broken after exceeding the limit stress, and the drill hole is easily in hydraulic connection with each water-bearing layer and the water-bearing structure on the upper part to form a water guide channel of a mine. The water disaster threat is one of the major threat sources influencing the coal mine safety mining.
The technology used for plugging the drill hole mainly focuses on fully-closed drilling, but the technology still has many defects: 1) the research of the diffusion migration rule of the slurry in the original rock or the artificial original rock fracture is lacked; 2) the effective control on the water environment pressure of an aquifer is lacked, the conventional hydrostatic pressure is generally low, and the hydrostatic pressure is usually obtained through a constant head device and is generally far smaller than grouting pressure; 3) the influence of multiple main control variables such as grouting pressure, fracture opening, fracture inclination angle, fracture roughness, slurry proportion, water pressure environment and the like on slurry migration is not considered in a simulation experiment, so that when a fully-closed drilling plugging method is adopted, the plugging effect is poor, and a water channel is easily enlarged due to too large slurry pressure.
Disclosure of Invention
The invention aims to provide a sectional positioning and stopping device with pressure in a downhole drill hole and a method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a blocking device and a blocking method for subsection positioning under pressure in a downhole drilling hole comprise a plug rod variable head, wherein a lower slot is arranged on the plug rod variable head, a lower clamping groove is communicated with the lower slot, a connecting block is inserted in the lower slot, a sliding groove is arranged on the connecting block, a pressing block is connected in the sliding groove in a sliding mode, a spring is fixedly connected onto the pressing block, the sliding groove is communicated with a through groove, a clamping hook is fixedly mounted on the pressing block, the connecting block is inserted into an upper slot of a plug shell, the upper slot is communicated with an upper clamping groove, a blocking plug is fixedly mounted on the plug shell, a base is fixedly mounted in the blocking plug, a lead screw is rotatably mounted in the base, a moving nut is connected onto the lead screw in a threaded mode, a connecting rod is rotatably connected onto the moving nut, the connecting rod is rotatably connected onto an expansion plate, a top cover is fixedly mounted on the blocking plug, and a mandril is fixedly mounted on the top cover, the ejector rod is fixedly provided with a pipe frame, and the pipe frame is rotatably provided with a rotating pipe.
Preferably, the stopper rod becomes the head and includes the probe foot of cylindrical main part and two symmetries, slot and last slot are the same U type groove of shape system specification down, and draw-in groove and last draw-in groove are the same L type groove of shape system specification down, the draw-in groove sets up two at slot bilateral symmetry down, and goes up the draw-in groove and set up two at last slot bilateral symmetry.
Preferably, the coupling block is connected between the plug rod head and the plug shell, the sliding groove is formed in the middle of the coupling block, the two pressing blocks are installed in the sliding groove in a mirror image mode, and the spring is connected between the pressing blocks.
Preferably, the pothooks are connected in the through grooves in a sliding mode, four pothooks are symmetrically arranged on the connecting block, and the pothooks are clamped in the lower clamping groove and the upper clamping groove.
Preferably, the stop plug is a deformation expansion plug, the base is installed in a cavity of the stop plug, the screw rod comprises a first screw rod pair and a second screw rod pair, the screw thread turning directions of the first screw rod pair and the second screw rod pair are opposite, and the two movable nuts are respectively connected to the first screw rod pair and the second screw rod pair.
Preferably, the connecting rods are connected with 4-8 connecting rods on a single movable nut in a ring shape, and an expansion plate is connected between the upper connecting rod and the lower connecting rod, wherein the number of the expansion plate is the same as that of the connecting rods on the single nut.
Preferably, the ejector pins are symmetrically arranged on the top cover, the pipe frame is connected between the two ejector pins, and the rotating pipe is coaxially connected with the screw rod.
A downhole under-pressure sectional positioning and stopping method in a borehole comprises the following steps;
a, selecting the specification of a plug rod variable head according to the diameter of a drilled hole, installing the plug rod variable head, connecting the plug rod variable head with a plug shell through a connecting block, simultaneously pressing two pressing blocks, inwards moving the pressing blocks against the pressure of a spring to drive a clamping hook to move, respectively inserting two ends of the connecting block 4 into a lower slot and an upper slot, simultaneously respectively inserting the clamping hooks at the two ends into an upper clamping groove and a lower clamping groove after avoiding, and then releasing the pressing blocks, wherein the clamping hooks are clamped in the lower clamping groove and the upper clamping groove under the acting force of the spring;
and step B, when the slurry for drilling is blocked in sections, stopping the slurry, lowering the whole device through a mandril, determining the crack development position in the drill hole through a probe pin, sending a stopping plug to a specified position, rotating a rotating pipe, driving a screw rod to rotate, driving a first screw rod pair and a second screw rod pair to rotate, driving two movable nuts to move towards the middle part of the screw rod simultaneously, driving a connecting rod to push an expansion plate to move, driving the stopping plug to expand and deform, attaching the stopping plug to the hole wall of the drill hole, and sealing the drill hole.
Compared with the prior art, the invention has the beneficial effects that:
1. the fixed-point plugging of the water channel is carried out by a sectional type grouting method, the water channel can be prevented from being enlarged due to too large slurry pressure, the stop plug is placed in a drill hole, accurate positioning is carried out by changing the head of a plug rod at the bottom, a rotating pipe is used for driving a screw rod, pressure can be generated from the inside of the stop plug, the stop plug is attached to the wall of the drill hole in an expansion mode, the drill hole is sealed, the slurry can be prevented from leaking outwards, accidents caused by the fact that a slurry grouting pipe is pushed out of the hole are avoided, and therefore the water channel is plugged;
2. the plug rod variable head is made of wood materials, is the bottom end of the whole device, can accurately position the position of crack development in a drill hole, provides basic guarantee for realizing positioning stop, is provided with a plurality of specifications, can be selected according to the hole diameter of the drill hole, is arranged at the bottom of a plug shell through a quick clamping structure of a connecting block, and is very convenient to use.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of area A of FIG. 1;
fig. 3 is an enlarged schematic view of the area B in fig. 1.
In the figure: the plug rod variable head comprises a plug rod variable head 1, a lower slot 2, a lower slot 3, a connecting block 4, a sliding groove 5, a pressing block 6, a spring 7, a through groove 8, a clamping hook 9, a plug shell 10, an upper slot 11, an upper slot 12, a stop plug 13, a base 14, a screw rod 15, a first screw rod pair 151, a second screw rod pair 152, a movable nut 16, a connecting rod 17, an expansion plate 18, a top cover 19, an ejector rod 20, a pipe frame 21 and a rotary pipe 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution: a blocking device and a blocking method for subsection positioning under pressure in a downhole drilling hole comprise a plug rod variable head 1, wherein a lower slot 2 is arranged on the plug rod variable head 1, a lower clamping groove 3 is communicated on the lower slot 2, a connecting block 4 is inserted in the lower slot 2, a sliding groove 5 is arranged on the connecting block 4, a pressing block 6 is connected in the sliding groove 5 in a sliding mode, a spring 7 is fixedly connected on the pressing block 6, a through groove 8 is communicated with the sliding groove 5, a clamping hook 9 is fixedly mounted on the pressing block 6, the connecting block 4 is inserted into an upper slot 11 of a plug shell 10, an upper slot 11 is communicated with an upper clamping groove 12, a blocking plug 13 is fixedly mounted on the plug shell 10, a base 14 is fixedly mounted in the blocking plug 13, a lead screw 15 is rotatably mounted in the base 14, a moving nut 16 is connected on the lead screw 15 in a threaded mode, a connecting rod 17 is rotatably connected on the moving nut 16, and the connecting rod 17 is rotatably connected on an expansion plate 18, a top cover 19 is fixedly mounted on the stop plug 13, an ejector rod 20 is fixedly mounted on the top cover 19, a pipe frame 21 is fixedly mounted on the ejector rod 20, and a rotating pipe 22 is rotatably mounted in the pipe frame 21.
The plug rod variable head 1 comprises a cylindrical main body and two symmetrical probe pins, the lower slot 2 and the upper slot 11 are U-shaped slots with the same shape and specification, the lower slot 3 and the upper slot 12 are L-shaped slots with the same shape and specification, the lower slot 3 is symmetrically arranged on two sides of the lower slot 2, the upper slot 12 is symmetrically arranged on two sides of the upper slot 11, the plug rod variable head 1 is made of a wood material and is the bottom end of the whole device, the position of crack development in a drill hole can be accurately positioned through the probe pins, basic guarantee is provided for realizing positioning stop, the plug rod variable heads 1 with different sizes can be selected to be quickly installed on the plug shell 10 according to the aperture of the drill hole, and the arranged lower slot 2, the upper slot 11, the lower slot 3 and the upper slot 12 are all used for connection;
the connecting block 4 is connected between the plug rod change head 1 and the plug shell 10, the sliding groove 5 is arranged in the middle of the connecting block 4, the two pressing blocks 6 are arranged in the sliding groove 5 in a mirror image mode, the spring 7 is connected between the pressing blocks 6, the connecting block 4 is used for connecting the plug rod change head 1 and the plug shell 10, and the pressing blocks 6 can move inwards in the sliding groove 5 against the elastic force of the spring 7 by simultaneously pressing the two pressing blocks 6 downwards;
the clamping hooks 9 are connected in the through groove 8 in a sliding mode, four clamping hooks 9 are symmetrically arranged on the connecting block 4, the clamping hooks 9 are clamped in the lower clamping groove 3 and the upper clamping groove 12, the clamping hooks 9 can be driven to move through the movement of the pressing block 6, so that when the two ends of the connecting block 4 are inserted into the lower slot 2 and the upper slot 11, the clamping hooks 9 are inserted into the lower clamping groove 3 and the upper clamping groove 12 after being avoided, then the pressing block 6 is released, the clamping hooks 9 are clamped in the lower clamping groove 3 and the upper clamping groove 12 under the action of the spring 7, and the stopper rod variable head 1 is arranged at the bottom of the stopper shell 10, so that the stopper rod variable head 1 is very convenient to install and can freely select the stopper rod variable head 1 with the required specification;
the stop plug 13 is a deformation expansion plug, the base 14 is installed in a cavity of the stop plug 13, the screw 15 comprises a first screw rod pair 151 and a second screw rod pair 152 with opposite screw thread directions, two moving nuts 16 are arranged and are respectively connected to the first screw rod pair 151 and the second screw rod pair 152, the screw 15 can rotate in the stop plug 13, so that the two moving nuts 16 are driven to move by the driving of the first screw rod pair 151 and the second screw rod pair 152, and the moving directions of the two moving nuts 16 are always opposite due to the opposite arrangement of the screw thread directions;
the connecting rods 17 are annularly connected with 4-8 single movable nuts 16, the expansion plate 18 is connected between the upper connecting rod 17 and the lower connecting rod 17, the number of the expansion plates 18 is the same as that of the connecting rods 17 on the single nuts 16, and when the two movable nuts 16 simultaneously move like the middle, the expansion plates 18 can be pushed to move through the connecting rods 7, so that pressure is generated inside the stop plug 13, the stop plug 13 deforms and expands to be attached to the wall of a drilled hole, the drilled hole is sealed, slurry is prevented from leaking outside, and accidents caused by the fact that a slurry grouting pipe is pushed out of the hole are avoided;
the two ejector rods 20 are symmetrically arranged on the top cover 19, the pipe frame 21 is connected between the two ejector rods 20, the rotating pipe 22 is coaxially connected with the screw rod 15, the whole device is lowered through the ejector rods 20, the stop plug 13 is sent to a specified position, and the screw rod 15 is driven through the rotating pipe 22;
a downhole under-pressure sectional positioning and stopping method in a borehole comprises the following steps;
a, selecting the specification of a plug rod variable head 1 according to the diameter of a drilled hole, installing the plug rod variable head 1, connecting the plug rod variable head 1 with a plug shell 10 through a connecting block 4, simultaneously pressing two pressing blocks 6, inwards overcoming the pressure of a spring 7 by the pressing blocks 6, driving a clamping hook 9 to move, respectively inserting two ends of the connecting block 4 into a lower slot 2 and an upper slot 11, simultaneously respectively inserting the clamping hooks 9 at the two ends into an upper clamping slot 12 and a lower clamping slot 3 after avoiding, then releasing the pressing blocks 6, and clamping the clamping hooks 9 in the lower clamping slot 3 and the upper clamping slot 12 under the acting force of the spring 7;
and step B, when the slurry for drilling is blocked in sections, stopping the slurry, lowering the whole device through the ejector rod 20, determining the crack development position in the drill hole through the probe pin, sending the stop plug 13 to a specified position, rotating the rotating pipe 22, driving the screw rod 15 to rotate, rotating the first screw rod pair 151 and the second screw rod pair 152, driving the two moving nuts 16 to move towards the middle part of the screw rod 15 simultaneously, driving the connecting rod 17 to push the expansion plate 18 to move, enabling the stop plug 13 to expand and deform, attaching the stop plug to the hole wall of the drill hole, and sealing the drill hole.
The working principle is as follows: when the plug rod variable head is used, firstly, the specification of the plug rod variable head 1 is selected according to the bore diameter of a drilled hole, then, the plug rod variable head 1 is installed, the connection between the plug rod variable head 1 and a plug shell 10 is carried out through the connecting block 4, the two pressing blocks 6 are pressed downwards at the same time, the pressing blocks 6 can move inwards in the sliding groove 5 by overcoming the elasticity of the spring 7 so as to drive the clamping hooks 9 to move, therefore, when the two ends of the connecting block 4 are inserted into the lower slot 2 and the upper slot 11, the clamping hooks 9 are inserted into the lower clamping groove 3 and the upper clamping groove 12 after avoiding, and finally, the pressing blocks 6 are released, so that the clamping hooks 9 are clamped in the lower clamping groove 3 and the upper clamping groove 12 under the action of the spring 7, therefore, the plug rod variable head 1 is installed at the bottom of the plug shell 10, the installation is very convenient, and the plug rod variable head 1 with the required specification can be freely selected;
when the slurry for drilling is blocked in sections, the slurry is required to be stopped, the whole device is lowered through the ejector rod 20, the plug rod change head 1 is made of a wood material and is the bottommost end of the whole device, the position of crack development in the drill hole can be accurately positioned through the probe pin, basic guarantee is provided for realizing positioning and stopping, the stop plug 13 is sent to a designated position and then is driven by the rotating pipe 22, the screw rod 15 can rotate in the stop plug 13, so that the two moving nuts 16 are driven to move through the driving of the first screw rod pair 151 and the second screw rod pair 152, the two moving nuts 16 simultaneously move towards the middle part of the screw rod 15 due to the opposite arrangement of the thread directions, the expansion plate 18 can be pushed to move through the connecting rod 7, the pressure is generated inside the stop plug 13, the stop plug 13 deforms and expands to be attached to the hole wall of the drill hole, and the drill hole is sealed, prevent the grout from leaking outwards, and simultaneously avoid the accidents caused by the pushing of the grout injection pipe out of the hole.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an area is pressed in downhole drilling and is pressed segmentation location stop device, becomes head (1) including the cock stem, its characterized in that: the stopper rod change head (1) is provided with a lower slot (2), the lower slot (2) is communicated with a lower clamping groove (3), the lower slot (2) is connected with a connecting block (4) in a splicing manner, the connecting block (4) is provided with a sliding groove (5), the sliding groove (5) is connected with a pressing block (6) in a sliding manner, the pressing block (6) is fixedly connected with a spring (7), the sliding groove (5) is communicated with a through groove (8), the pressing block (6) is fixedly provided with a clamping hook (9), the connecting block (4) is spliced into an upper slot (11) of the stopper shell (10), the upper slot (11) is communicated with an upper clamping groove (12), the stopper shell (10) is fixedly provided with a stop plug (13), the stop plug (13) is fixedly provided with a base (14), a lead screw (15) is rotatably arranged in the base (14), and a movable nut (16) is connected with the lead screw in a threaded manner, the movable nut (16) is rotatably connected with a connecting rod (17), the connecting rod (17) is rotatably connected to an expansion plate (18), a top cover (19) is fixedly installed on the stop plug (13), a top rod (20) is fixedly installed on the top cover (19), a pipe frame (21) is fixedly installed on the top rod (20), and a rotating pipe (22) is rotatably installed in the pipe frame (21);
the stopper rod change head (1) comprises a cylindrical main body and two symmetrical probe pins, the lower slot (2) and the upper slot (11) are U-shaped slots with the same shape and specification, the lower clamping slot (3) and the upper clamping slot (12) are L-shaped slots with the same shape and specification, the two lower clamping slots (3) are symmetrically arranged on two sides of the lower slot (2), and the two upper clamping slots (12) are symmetrically arranged on two sides of the upper slot (11);
the connecting block (4) is connected between the plug rod variable head (1) and the plug shell (10), the sliding groove (5) is arranged in the middle of the connecting block (4), the two pressing blocks (6) are arranged in the sliding groove (5) in a mirror image mode, and the spring (7) is connected between the pressing blocks (6).
2. The downhole under-pressure segmented positioning and stopping device according to claim 1, characterized in that: pothook (9) sliding connection is in logical groove (8), and pothook (9) symmetry install four on connection piece (4), pothook (9) joint is in draw-in groove (3) and last draw-in groove (12) down.
3. The downhole under-pressure segmented positioning and stopping device according to claim 1, characterized in that: the stop plug (13) is a deformation expansion plug, the base (14) is installed in a cavity of the stop plug (13), the screw rod (15) comprises a first screw rod pair (151) and a second screw rod pair (152) which are opposite in thread turning direction, and two moving nuts (16) are arranged and are respectively connected to the first screw rod pair (151) and the second screw rod pair (152).
4. The downhole under-pressure segmented positioning and stopping device according to claim 1, characterized in that: the connecting rods (17) are connected with 4-8 connecting rods on a single movable nut (16) in a ring shape, the expansion plate (18) is connected between the upper connecting rod (17) and the lower connecting rod (17), and the number of the expansion plates (18) is the same as that of the connecting rods (17) on the single nut (16).
5. The downhole under-pressure segmented positioning and stopping device according to claim 1, characterized in that: the ejector rods (20) are symmetrically arranged on the top cover (19), the pipe frame (21) is connected between the two ejector rods (20), and the rotating pipe (22) is coaxially connected with the screw rod (15).
6. A downhole under-pressure segmented positioning and stopping method is characterized in that: positioning and stopping by using the segmented positioning and stopping device with pressure in the underground drill hole according to any one of claims 1 to 5, comprising the following steps;
a, selecting the specification of a plug rod variable head (1) according to the diameter of a drilled hole, installing the plug rod variable head (1), connecting the plug rod variable head (1) with a plug shell (10) through a connecting block (4), simultaneously pressing two pressing blocks (6), inwards moving the pressing blocks (6) by overcoming the pressure of a spring (7) to drive hooks (9) to move, respectively inserting two ends of the connecting block (4) into a lower slot (2) and an upper slot (11), simultaneously respectively inserting the hooks (9) at two ends into an upper clamping groove (12) and a lower clamping groove (3) after avoiding, and then releasing the pressing blocks (6), wherein the hooks (9) are clamped in the lower clamping groove (3) and the upper clamping groove (12) under the acting force of the spring (7);
and step B, when the slurry for drilling is blocked in sections, stopping the slurry, lowering the whole device through a mandril (20), determining the crack development position in the drill hole through a probe pin, sending a stopping plug (13) to a specified position, rotating a rotating pipe (22), driving a screw rod (15) to rotate, driving a first screw rod pair (151) and a second screw rod pair (152) to rotate, driving two moving nuts (16) to move towards the middle part of the screw rod (15) simultaneously, driving a connecting rod (17) to push an expansion plate (18) to move, enabling the stopping plug (13) to expand and deform, attaching the stopping plug to the hole wall of the drill hole, and sealing the drill hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974085.9A CN112145123B (en) | 2020-09-16 | 2020-09-16 | Underground borehole under-pressure segmented positioning stop device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974085.9A CN112145123B (en) | 2020-09-16 | 2020-09-16 | Underground borehole under-pressure segmented positioning stop device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112145123A CN112145123A (en) | 2020-12-29 |
| CN112145123B true CN112145123B (en) | 2022-04-26 |
Family
ID=73892943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010974085.9A Active CN112145123B (en) | 2020-09-16 | 2020-09-16 | Underground borehole under-pressure segmented positioning stop device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112145123B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201568016U (en) * | 2009-12-15 | 2010-09-01 | 中国地质科学院探矿工艺研究所 | Interception type plugging tool for drilling and well drilling |
| WO2011153474A1 (en) * | 2010-06-03 | 2011-12-08 | Joseph Kahoe | Electromagnetic oil pipe plugger |
| CN106522235A (en) * | 2016-11-01 | 2017-03-22 | 中化二建集团有限公司 | Narrow site deep foundation pit excavation supporting construction method |
| CN210315632U (en) * | 2019-05-31 | 2020-04-14 | 广西路桥工程集团有限公司 | Annular underground diaphragm wall foundation of large-span arch bridge in deep coverage area |
| CN110173231A (en) * | 2019-07-08 | 2019-08-27 | 中煤科工集团重庆研究院有限公司 | To the closely knit hole-sealing pressure measuring device of drilling subsection and method under a kind of long range |
| CN210530792U (en) * | 2019-09-27 | 2020-05-15 | 肥城新查庄地质勘查有限公司 | Double-liquid safe grouting device in large-aperture ultra-deep drill hole |
| CN213392089U (en) * | 2020-09-16 | 2021-06-08 | 冀中能源股份有限公司 | Under-well borehole under-pressure segmented positioning stop device |
-
2020
- 2020-09-16 CN CN202010974085.9A patent/CN112145123B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112145123A (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111764837B (en) | Double-end water plugging detection rod, overburden fracture drilling and measuring integrated device and drilling and measuring method | |
| CN110195578B (en) | Separate layer water injection system of small cased well | |
| CN112360386B (en) | Hydraulic drive positioning type sealing method for inclined large-diameter drilling of coal mine | |
| CN103835651A (en) | Single-hole directional drilling local grouting raise boring technology | |
| CN113338884B (en) | Single-loop hydrofracturing and impression integrated ground stress testing device and method | |
| CN108301804B (en) | Slip expansion type deepwater packer | |
| CN213392089U (en) | Under-well borehole under-pressure segmented positioning stop device | |
| CN205858333U (en) | A kind of three plug hydraulic fracturing detecting earth stress systems | |
| CN104612606A (en) | Mine grouting technology and device with hole opening closed and circulation performed in hole | |
| CN108661035A (en) | Packer permeability test equipment | |
| CN112145123B (en) | Underground borehole under-pressure segmented positioning stop device and method | |
| CN104612715A (en) | Mine grouting technology and device with slurry stopping in hole | |
| CN206204974U (en) | A kind of device for plugging for concrete pipe base core-drawing hole water burst | |
| CN116677343B (en) | Cementing plugging device and plugging method for large karst cave lost circulation | |
| CN104563920A (en) | Tripping pipe column drilling fluid injection and circulation device and method | |
| CN109707416A (en) | A kind of method that tunnel waterproofing layer reconstruction is repaired | |
| CN207143903U (en) | A kind of static sounding feeler lever | |
| CN201202429Y (en) | Expansion tube hanging seal device for open hole section | |
| CN111894601B (en) | Coal seam roadway surrounding rock structure passing geological structure and advanced modification tunneling method thereof | |
| CN205712219U (en) | A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test | |
| CN111380638B (en) | Method for improving actual measurement precision of mining induced stress in solid coal area | |
| CN202249922U (en) | Device for sealing high-pressure slip casting open hole deep hole with preposed expand tube | |
| CN115110921B (en) | Pressure-maintaining displacement extraction method for gas in permeable anisotropic coal seam | |
| CN221032642U (en) | Advanced long pipe shed for tunnel support | |
| CN213740883U (en) | Grout stopper suitable for super large aperture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |