CN116241202A

CN116241202A - Coiled tubing energy-increasing uniform blocking removal and yield increasing device and blocking removal and yield increasing method for horizontal well

Info

Publication number: CN116241202A
Application number: CN202310082797.3A
Authority: CN
Inventors: 张相春; 邢艳斌; 赵晨; 邢志辉; 李昂; 崔国巍
Original assignee: XI'AN PETROLEUM GREAT PETROLEUM TECHNOLOGY CO LTD
Current assignee: XI'AN PETROLEUM GREAT PETROLEUM TECHNOLOGY CO LTD
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-06-09

Abstract

The invention discloses a coiled tubing energy-increasing uniform blocking removal and production increase device for a horizontal well and a blocking removal and production increase method, wherein the device comprises a propulsion component, a blocking component and a blocking removal component; the propelling component comprises a base, a clamping seat clamped on the base, an electric push rod arranged on the base and connected with the clamping seat, a propelling roller arranged in the clamping seat and a first micro motor for providing power for the propelling roller; the plugging assembly comprises a connecting hose, a plugging disc arranged at the end part of the connecting hose, a rubber plugging bag arranged at the periphery of the plugging disc and an expansion assembly arranged on the plugging disc; the blocking removing assembly comprises a mounting rod arranged on the blocking disc, a high-pressure spray head hinged on the mounting rod, a blocking removing pipe arranged inside the connecting hose and connected with the high-pressure spray head, and a high-pressure pump connected with the blocking removing pipe; the device has high blocking removal efficiency, effectively improves the productivity of the horizontal well, and is suitable for popularization and use.

Description

Coiled tubing energy-increasing uniform blocking removal and yield increasing device and blocking removal and yield increasing method for horizontal well

Technical Field

The invention relates to the technical field of oilfield exploitation, in particular to a coiled tubing energy-increasing uniform blocking removal and yield increase device and a blocking removal and yield increase method for a horizontal well.

Background

The horizontal well is that after the oil well is drilled vertically or obliquely to the oil layer, the drilling tool drills along the direction parallel to the oil layer to form a horizontal shaft in the oil layer, so as to ensure that the drilling in the oil layer of the long well section is completed. Conventional oil wells often pass through an oil layer vertically or obliquely, so that well sections in the oil layer are often short, the oil extraction efficiency is low, while the production capacity of the horizontal well oil extraction process is obviously improved compared with that of the conventional oil well through a longer well section passing through the oil layer, and the horizontal well oil extraction process is widely applied to oil field exploitation in recent years.

The existing coal bed methane horizontal well flushing and blocking removing process mainly comprises the following steps: 1. the process is simple to operate and convenient to construct, but the blocking removal efficiency is relatively low; 2. the hydraulic positive circulation spin-flushing plug removing process has good plug removing effects on the holes of the sieve tube and the collapse of the well wall outside the sieve tube, but has general plug removing and seepage increasing effects on pollution plugs of reservoirs in near well zones and has poor flushing effects on deposition plugs at low-lying parts of the wave-shaped horizontal well; 3. the process adopts nitrogen foam as flushing liquid to flush the shaft in a reverse circulation manner, has strong rock carrying capacity in flowback and good flushing and blocking removal effects on plugs in the shaft, but has relatively high cost and general pollution blocking removal effects on the positions of sieve tube holes and near well zones.

Disclosure of Invention

Aiming at the technical problems, the invention provides a continuous oil pipe energy increasing uniform blocking removal and yield increasing device for a horizontal well and a blocking removal and yield increasing method.

The technical scheme of the invention is as follows: the continuous oil pipe energy increasing uniform blocking removing and yield increasing device for the horizontal well comprises a pushing assembly arranged at the wellhead of the horizontal well, a blocking assembly connected with the pushing assembly and a blocking removing assembly connected with the blocking assembly; the propelling component comprises a base, a plurality of clamping seats, a plurality of electric push rods, a plurality of propelling idler wheels and a plurality of first micro motors, wherein the center position of the base is provided with a through hole, the clamping seats are connected to the base in a sliding clamping mode and are positioned in the circumferential direction of the through hole, the electric push rods are arranged on the base and are respectively and fixedly connected with the clamping seats in a one-to-one correspondence mode, the propelling idler wheels are arranged in the clamping seats in a one-to-one correspondence mode, and the first micro motors are arranged in the clamping seats and provide power for the propelling idler wheels;

the plugging assembly comprises a connecting hose penetrating through the through hole and extending into the horizontal well, two plugging discs fixedly connected to the end parts of the connecting hose, rubber plugging bags respectively arranged on the circumferences of the two plugging discs, and an expansion assembly respectively arranged on the two plugging discs and used for supporting the rubber plugging bags; one of the plugging discs is fixedly connected to the end part of the connecting hose, and the other plugging disc is fixedly connected with the plugging disc close to the connecting hose through a plurality of pull rods; the blocking disc is hollow and is internally provided with a first clamping sleeve and a second clamping sleeve in sequence;

the blocking removing assembly comprises a plurality of mounting rods which are arranged between the two blocking plates and are in one-to-one correspondence with the pull rods, a plurality of high-pressure spray heads which are movably hinged to the mounting rods, blocking removing pipes which are arranged inside the connecting hose and are connected with the high-pressure spray heads through capillaries, and a high-pressure pump which is arranged outside the horizontal well and is connected with the blocking removing pipes.

Further, the expansion assembly comprises a plurality of expansion rods which are rotationally clamped on the circumference of the plugging disc, arc-shaped tiles which are movably hinged at the end parts of the expansion rods and are abutted against the inner wall of the rubber plugging bag, a first gear ring which is arranged inside the plugging disc and is positioned at the outer side of the first clamping sleeve, and a second micro motor which is arranged inside the plugging disc and is used for providing power for the first gear ring; gears are arranged at the joints of the expansion rods and the plugging disc, and are respectively meshed with the first gear ring;

description: when the device is used, the second micro motor is utilized to drive the first gear ring to rotate, so that each gear rotates under the action of the first gear ring, the expansion rod is driven to deflect by a certain angle, and finally, the rubber plugging bag is propped open by the arc-shaped tile, so that a closed space is formed between the two plugging discs and the inner wall of the shaft, and the sectional plugging removal operation is facilitated on the inner wall of the shaft, and the plugging removal effect is improved.

Further, a rotary disc is rotatably clamped on the plugging disc far away from the connecting hose, a rotary flexible shaft penetrating through the two plugging discs and connected with the rotary disc is arranged in the connecting hose, and a plurality of crushing plates are circumferentially distributed at equal intervals on the rotary disc; a power motor connected with the rotary flexible shaft is arranged outside the horizontal well;

description: when the connecting hose stretches into the shaft of the horizontal well, the power motor is utilized to drive the rotary flexible shaft to rotate, the rotary disc is utilized to drive the crushing plate to rotate, and the blocking objects such as ore piled up in the shaft are crushed and cleaned, so that the production efficiency of the horizontal well is improved.

Further, teeth are arranged on each crushing plate, and auxiliary cutting strips are arranged on two sides of each crushing plate;

description: through set up tooth and auxiliary cutting strip on the breaker plate, can improve the breaker plate to the crushing effect of the interior plug of pit shaft.

Further, each high-pressure spray head is respectively in sliding clamping connection with the pull rod at the position of alignment; an adjusting pressure plate and a butt joint plate are respectively arranged on one side of the two plugging plates opposite to each other; the adjusting pressure plate is rotationally clamped with the plugging disc at the corresponding position, a second gear ring penetrating through the plugging disc is arranged on one side of the adjusting pressure plate, a third micro motor for providing power for the second gear ring is arranged on the second clamping sleeve, a limiting groove in sliding clamping connection with each mounting rod is arranged on the other side of the adjusting plate, and a wedge-shaped sliding block in abutting connection with each mounting rod is arranged in the limiting groove; the butt joint holes are formed in the positions, corresponding to the positions of the mounting rods, of the butt joint plates, and reset springs are arranged in the butt joint holes:

description: the third micro motor is utilized to drive the adjusting pressure plate to drive the second gear ring to rotate, so that the adjusting pressure plate rotates on the corresponding unblocking plate, the wedge-shaped sliding blocks on the adjusting pressure plate are utilized to push each mounting rod to reciprocate in the butt joint holes on the butt joint plate, so that the high-pressure spray heads on each mounting rod can swing on the pull rod, and the uniformity of the unblocking effect inside the shaft is improved.

Further, a ball head is rotationally clamped at the joint of the mounting rod and the wedge-shaped sliding block;

description: through set up the bulb on the installation pole, not only can improve the smoothness when installation pole removes, can reduce the wearing and tearing between installation pole and the wedge slider moreover.

Further, a guide disc is arranged on one side, away from the two plugging discs, of each plugging disc, and a plurality of guide wheels are circumferentially distributed at equal intervals on each guide disc;

description: the guide disc and the guide wheel are arranged, so that the plugging assembly can be prevented from being damaged due to friction with the inner wall of the shaft in the moving process of the shaft, and meanwhile, the plugging assembly can smoothly enter the shaft, and the use reliability of the invention is improved.

Further, an anti-corrosion wear-resistant sleeve is sleeved outside the rotary flexible shaft;

description: the anti-corrosion wear-resistant sleeve is sleeved outside the rotary flexible shaft, so that the rotary flexible shaft can be prevented from being damaged due to erosion of the blocking remover in the use process.

Further, a pressure sensor is arranged between the two plugging discs, a return pipe penetrating through the plugging discs is arranged inside the connecting hose, and a suction pump connected with the return pipe and a monitoring host electrically connected with the pressure sensor are arranged outside the horizontal well;

description: the pressure sensor is used for sensing the pressure between the two plugging discs and the shaft, when the pressure exceeds a preset value, the flowback fluid in the shaft is discharged by the flowback tube, so that the safety threat to the horizontal well caused by overhigh pressure in the horizontal well can be avoided.

Further, each pushing roller is provided with an anti-skid stripe;

description: through set up anti-skidding stripe on advancing the gyro wheel, can avoid connecting hose to skid when entering the pit shaft inside, improve horizontal well unblock efficiency.

The invention also provides an energy-increasing uniform blocking-removing and yield-increasing method for the coiled tubing for the horizontal well, which comprises the following steps of:

s1, respectively connecting an electric push rod, a first micro motor, an expansion assembly and a high-pressure pump with an external power supply;

s2, fixing the base at the wellhead position of the horizontal well, and enabling the through hole on the base to be opposite to the wellhead of the horizontal well; opening the electric push rod, so that the electric push rod is contracted to drive each clamping seat to slide on the base and keep away from each other;

s3, extending the plugging component and the unblocking component into the horizontal well shaft through the through hole; opening the electric push rod, so that the electric push rod stretches and pulls all clamping seats to be close to each other, and all pushing rollers are abutted with the outer wall of the connecting hose; then starting each first micro motor, driving each propulsion roller to rotate by using each first micro motor, and finally enabling the plugging component and the plugging removing component to enter a preset position in the horizontal well shaft;

s4, opening the two expansion assemblies to expand the rubber sealing bags on the two sealing discs, so that sealing between the two sealing discs and the inner wall of the shaft is realized;

s5, starting the high-pressure pump, injecting external blocking removing liquid into each high-pressure spray head through the blocking removing pipe by using the high-pressure pump, and performing blocking removing liquid high-pressure injection blocking removing operation on the blocking holes in the horizontal well shaft.

Compared with the prior art, the invention has the beneficial effects that:

firstly, the connecting hose is continuously led into the shaft of the horizontal well by the propulsion component, the shaft is plugged by the two plugging discs, and finally the plugging removal operation is carried out on a specific area in the horizontal well by the plugging removal component, so that the plugging removal effect and efficiency of the horizontal well are effectively improved, and the productivity of the horizontal well is improved;

secondly, the plugging assembly can reach any area inside the horizontal well under the action of the propulsion assembly, so that uniform acidification plugging removal operation of the horizontal well can be realized, the acidification effect degree of the horizontal well section is increased, the permeability of a reservoir is improved, and the development effect of the horizontal well is improved;

thirdly, the high-pressure spray head capable of circularly swinging is used for efficiently cleaning slurry of annular space, holes and cracks of the well wall of the horizontal well and mud cake attached to the slurry, so that the blocking removing effect of the horizontal well is improved, the permeability of stratum is improved, the yield of the horizontal well is improved, and economic efficiency is improved.

Drawings

FIG. 1 is a longitudinal cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the propulsion assembly of the present invention;

FIG. 3 is a schematic illustration of the connection of the clamping seat and the connecting hose according to the present invention;

FIG. 4 is a schematic illustration of the connection of a plugging assembly to a unplugging assembly of the present invention;

FIG. 5 is an enlarged partial schematic view of the invention at A in FIG. 4;

FIG. 6 is a schematic view of the construction of the expansion assembly of the present invention;

FIG. 7 is an enlarged partial schematic view of the present invention at B in FIG. 4;

FIG. 8 is a schematic illustration of the connection of the high pressure nozzle of the present invention to an adjustable platen;

FIG. 9 is a schematic illustration of the connection of a rotating disk to a guide disk of the present invention;

the device comprises a 1-pushing component, a 10-base, a 100-through hole, a 11-clamping seat, a 12-electric push rod, a 13-pushing roller, a 14-first micro motor, a 2-blocking component, a 20-connecting hose, a 21-blocking disc, a 210-pull rod, a 211-first clamping sleeve, a 212-second clamping sleeve, a 22-rubber blocking bag, a 23-expanding component, a 230-expanding rod, a 2300-gear, a 231-arc tile, a 232-first gear ring, a 233-second micro motor, a 24-guide disc, a 240-guide wheel, a 25-return tube, a 26-suction pump, a 3-blocking component, a 30-mounting rod, a 300-ball head, a 31-high pressure nozzle, a 32-blocking tube, a 33-high pressure pump, a 34-rotating disc, a 340-rotating flexible shaft, a 341-breaking plate, 3410-teeth, 3411-auxiliary cutting strips, a 342-power motor, a 35-adjusting device, a 350-second gear ring, a 351-limiting groove, a 352-wedge-shaped slider, a 36-docking disc, a 360-docking disc, a 361-docking hole, a 361-resetting spring and a 37-third pressure disc.

Detailed Description

Example 1

The coiled tubing energy-increasing uniform blocking-removing and yield-increasing device for the horizontal well as shown in figures 1, 2 and 3 comprises a pushing assembly 1 arranged at the wellhead of the horizontal well, a blocking assembly 2 connected with the pushing assembly 1 and a blocking-removing assembly 3 connected with the blocking assembly 2; the propulsion assembly 1 comprises a base 10 with a through hole 100 in the center, 4 clamping seats 11 which are clamped on the base 10 in a sliding manner and are positioned in the circumferential direction of the through hole 100, 4 electric push rods 12 which are arranged on the base 10 and are respectively and fixedly connected with the clamping seats 11 in a one-to-one correspondence manner, 4 propulsion idler wheels 13 which are arranged in the clamping seats 11 in a one-to-one correspondence manner, and 4 first micro motors 14 which are arranged in the clamping seats 11 and provide power for the propulsion idler wheels 13;

as shown in fig. 1, 4, 6 and 8, the plugging assembly 2 comprises a connecting hose 20 penetrating through a through hole 100 and extending into a horizontal well, two plugging discs 21 fixedly connected to the end parts of the connecting hose 20, rubber plugging bags 22 respectively arranged on the circumferences of the two plugging discs 21, and an expansion assembly 23 respectively arranged on the two plugging discs 21 and used for supporting the rubber plugging bags 22; one of the plugging discs 21 is fixedly connected to the end part of the connecting hose 20, and the other plugging disc 21 is fixedly connected with the plugging disc 21 close to the connecting hose 20 through 8 pull rods 210; the plugging disc 21 is hollow and is internally provided with a first clamping sleeve 211 and a second clamping sleeve 212 in sequence; the expansion assembly 23 is a commercially available inflator;

as shown in fig. 1 and 4, the unblocking assembly 3 includes 8 installation bars 30 disposed between two blocking plates 21 and in one-to-one correspondence with the respective tie bars 210, 8 groups of high pressure spray heads 31 movably hinged on the installation bars 30, unblocking pipes 32 disposed inside the connection hose 20 and connected with the respective high pressure spray heads 31 through capillaries, and high pressure pumps 33 disposed outside the horizontal well and connected with the unblocking pipes 32, each group of high pressure spray heads 31 being provided with 5.

Example 2

The embodiment describes a method for uniformly removing blockage and increasing production of a continuous oil pipe of a horizontal well by applying the device of the embodiment 1, which comprises the following steps:

s1, respectively connecting the electric push rod 12, the first micro motor 14, the expansion assembly 23 and the high-pressure pump 33 with an external power supply;

s2, fixing the base 10 at the wellhead position of the horizontal well, and enabling the through hole 100 on the base 10 to be opposite to the wellhead of the horizontal well; opening the electric push rod 12, so that after the electric push rod 12 is contracted, each clamping seat 11 is driven to slide on the base 10 and keep away from each other;

s3, extending the plugging assembly 2 and the unblocking assembly 3 into the horizontal well shaft through the through hole 100; opening the electric push rod 12, enabling the electric push rod 12 to stretch and pull each clamping seat 11 to be close to each other, and enabling each pushing roller 13 to be abutted against the outer wall of the connecting hose 20; then, starting each first micro motor 14, driving each propulsion roller 13 to rotate by utilizing each first micro motor 14, and finally enabling the plugging component 2 and the unplugging component 3 to enter a preset position in the horizontal well shaft;

s4, opening the two expansion assemblies 23 to expand the rubber sealing bags 22 on the two sealing discs 21, so that sealing between the two sealing discs 21 and the inner wall of the shaft is realized;

s5, starting the high-pressure pump 33, injecting external plugging removal liquid into each high-pressure spray head 31 through the plugging removal pipe 32 by using the high-pressure pump 33, and performing high-pressure injection plugging removal operation on plugging removal liquid in a horizontal well shaft; wherein, the blocking remover is the commercial acidizing blocking remover DFSJ-W1.

Example 3

as shown in fig. 1, 4, 5, 6 and 8, the plugging assembly 2 comprises a connecting hose 20 penetrating through a through hole 100 and extending into a horizontal well, two plugging discs 21 fixedly connected to the end parts of the connecting hose 20, rubber plugging bags 22 respectively arranged on the circumferences of the two plugging discs 21, and an expansion assembly 23 respectively arranged on the two plugging discs 21 and used for supporting the rubber plugging bags 22; one of the plugging discs 21 is fixedly connected to the end part of the connecting hose 20, and the other plugging disc 21 is fixedly connected with the plugging disc 21 close to the connecting hose 20 through 8 pull rods 210; the plugging disc 21 is hollow and is internally provided with a first clamping sleeve 211 and a second clamping sleeve 212 in sequence; the expansion assembly 23 comprises a plurality of expansion rods 230 which are rotationally clamped on the circumference of the plugging disc 21, arc-shaped tiles 231 which are movably hinged at the end parts of the expansion rods 230 and are abutted against the inner wall of the rubber plugging bag 22, a first gear ring 232 which is arranged inside the plugging disc 21 and is positioned outside the first clamping sleeve 211, and a second micro motor 233 which is arranged inside the plugging disc 21 and is used for providing power for the first gear ring 232; gears 2300 are arranged at the joints of the expansion rods 230 and the plugging discs 21, and each gear 2300 is in meshed connection with the first gear ring 232;

as shown in fig. 1, 4 and 9, the unblocking assembly 3 comprises 8 mounting rods 30 arranged between two blocking plates 21 and corresponding to the pull rods 210 one by one, 8 groups of high-pressure spray heads 31 movably hinged on the mounting rods 30, unblocking pipes 32 arranged inside the connecting hose 20 and connected with the high-pressure spray heads 31 through capillaries, and high-pressure pumps 33 arranged outside the horizontal well and connected with the unblocking pipes 32, wherein each group of high-pressure spray heads 31 is provided with 5 high-pressure spray heads; the plugging discs 21 far away from the connecting hose 20 are rotatably clamped with rotating discs 34, rotating flexible shafts 340 penetrating through the two plugging discs 21 and connected with the rotating discs 34 are arranged in the connecting hose 20, and 8 crushing plates 341 are circumferentially and equidistantly distributed on the rotating discs 34; a power motor 342 connected with a rotary flexible shaft 340 is arranged outside the horizontal well.

Example 4

The embodiment describes a method for uniformly removing blockage and increasing production of a continuous oil pipe of a horizontal well by applying the device of the embodiment 3, which comprises the following steps:

s1, respectively connecting the electric push rod 12, the first micro motor 14, the second micro motor 233, the power motor 342 and the high-pressure pump 33 with an external power supply;

s3, extending the plugging assembly 2 and the unblocking assembly 3 into the horizontal well shaft through the through hole 100; opening the electric push rod 12, enabling the electric push rod 12 to stretch and pull each clamping seat 11 to be close to each other, and enabling each pushing roller 13 to be abutted against the outer wall of the connecting hose 20; then, starting each first micro motor 14, driving each propulsion roller 13 to rotate by utilizing each first micro motor 14, and finally enabling the plugging component 2 and the unplugging component 3 to enter a preset position in the horizontal well shaft; when the connecting hose 20 stretches into the horizontal well shaft, the power motor 342 is started, the power motor 342 is used for driving the rotary flexible shaft 340 to rotate, the rotary disk 34 is used for driving the crushing plate 341 to rotate, and the plugs such as ores accumulated in the shaft are crushed and cleaned;

s4, starting a second micro motor 233, and driving the first gear ring 232 to rotate by using the second micro motor 233, so that each gear 2300 rotates under the action of the first gear ring 232, driving the expansion rod 230 to deflect a certain angle, and finally expanding the rubber plugging bag 22 by using the arc-shaped tile 231 to form a closed space between the two plugging discs 21 and the inner wall of the shaft;

Example 5

as shown in fig. 1, 4, 5, 7 and 8, the unblocking assembly 3 comprises 8 installing rods 30 arranged between two blocking plates 21 and corresponding to the pull rods 210 one by one, 8 groups of high-pressure spray heads 31 movably hinged on the installing rods 30, unblocking pipes 32 arranged inside the connecting hose 20 and connected with the high-pressure spray heads 31 through capillaries, and high-pressure pumps 33 arranged outside the horizontal well and connected with the unblocking pipes 32, wherein each group of high-pressure spray heads 31 is provided with 5 high-pressure spray heads; each high-pressure spray head 31 is respectively in sliding clamping connection with the pull rod 210 at the position of alignment; an adjusting pressure plate 35 and a butt joint plate 36 are respectively arranged on the opposite sides of the two plugging plates 21; the adjusting pressure plate 35 is rotationally clamped with the plugging disc 21 at the corresponding position, a second gear ring 350 penetrating through the plugging disc 21 is arranged on one side of the adjusting pressure plate 35, a third micro motor 37 for providing power for the second gear ring 350 is arranged on the second clamping sleeve 212, a limiting groove 351 which is in sliding clamping connection with each mounting rod 30 is arranged on the other side of the adjusting pressure plate 35, and a wedge-shaped sliding block 352 which is in abutting connection with each mounting rod 30 is arranged in the limiting groove 351; a butt joint hole 360 is arranged on the butt joint disc 36 and at the corresponding position of each mounting rod 30, and a reset spring 361 is arranged in each butt joint hole 360; the joint of the mounting rod 30 and the wedge-shaped sliding block 352 is rotatably clamped with a ball head 300.

Example 6

The embodiment describes a method for uniformly removing blockage and increasing production of a continuous oil pipe of a horizontal well by applying the device of the embodiment 5, which comprises the following steps:

s1, respectively connecting the electric push rod 12, the first micro motor 14, the second micro motor 233, the third micro motor 37 and the high-pressure pump 33 with an external power supply;

s5, starting the high-pressure pump 33 and the third micro motor 37, injecting external blocking remover into each high-pressure spray head 31 through the blocking remover pipe 32 by utilizing the high-pressure pump 33, and performing blocking remover high-pressure injection blocking remover operation on blocking holes in a horizontal well shaft; the third micro motor 37 is utilized to drive the adjusting pressure plate 35 to drive the second gear ring 350 to rotate, so that the adjusting pressure plate 35 rotates on the corresponding blocking removing disc 21, and the wedge-shaped sliding blocks 352 on the adjusting pressure plate 35 are utilized to push each mounting rod 30 to reciprocate in the butt joint holes 360 on the butt joint disc 36, so that the high-pressure spray heads 31 on each mounting rod 30 can swing on the pull rods 210, wherein blocking removing liquid is commercially available acidified blocking removing liquid DFSJ-W1.

Example 7

The coiled tubing energy-increasing uniform blocking-removing and yield-increasing device for the horizontal well as shown in figures 1, 2 and 3 comprises a pushing assembly 1 arranged at the wellhead of the horizontal well, a blocking assembly 2 connected with the pushing assembly 1 and a blocking-removing assembly 3 connected with the blocking assembly 2; the propulsion assembly 1 comprises a base 10 with a through hole 100 in the center, 4 clamping seats 11 which are clamped on the base 10 in a sliding manner and are positioned in the circumferential direction of the through hole 100, 4 electric push rods 12 which are arranged on the base 10 and are respectively and fixedly connected with the clamping seats 11 in a one-to-one correspondence manner, 4 propulsion idler wheels 13 which are arranged in the clamping seats 11 in a one-to-one correspondence manner, and 4 first micro motors 14 which are arranged in the clamping seats 11 and provide power for the propulsion idler wheels 13; each pushing roller 13 is provided with an anti-skid stripe;

as shown in fig. 1, 4, 5, 6, 8 and 9, the plugging assembly 2 comprises a connecting hose 20 penetrating through a through hole 100 and extending into a horizontal well, two plugging discs 21 fixedly connected to the end parts of the connecting hose 20, rubber plugging bags 22 respectively arranged on the circumferences of the two plugging discs 21, and an expanding assembly 23 respectively arranged on the two plugging discs 21 and used for supporting the rubber plugging bags 22; one of the plugging discs 21 is fixedly connected to the end part of the connecting hose 20, and the other plugging disc 21 is fixedly connected with the plugging disc 21 close to the connecting hose 20 through 8 pull rods 210; the plugging disc 21 is hollow and is internally provided with a first clamping sleeve 211 and a second clamping sleeve 212 in sequence; the expansion assembly 23 comprises a plurality of expansion rods 230 which are rotationally clamped on the circumference of the plugging disc 21, arc-shaped tiles 231 which are movably hinged at the end parts of the expansion rods 230 and are abutted against the inner wall of the rubber plugging bag 22, a first gear ring 232 which is arranged inside the plugging disc 21 and is positioned outside the first clamping sleeve 211, and a second micro motor 233 which is arranged inside the plugging disc 21 and is used for providing power for the first gear ring 232; gears 2300 are arranged at the joints of the expansion rods 230 and the plugging discs 21, and each gear 2300 is in meshed connection with the first gear ring 232; the side, away from the two plugging discs 21, is provided with a guide disc 24, and 6 guide wheels 240 are circumferentially and equidistantly distributed on the guide disc 24;

as shown in fig. 1, 4, 5, 7, 8 and 9, the unblocking assembly 3 includes 8 installation bars 30 disposed between two blocking plates 21 and in one-to-one correspondence with respective tie bars 210, 8 groups of high pressure spray heads 31 movably hinged on the installation bars 30, unblocking pipes 32 disposed inside the connection hose 20 and connected to the respective high pressure spray heads 31 through capillaries, and high pressure pumps 33 disposed outside the horizontal well and connected to the unblocking pipes 32, each group of high pressure spray heads 31 being provided with 5; the plugging discs 21 far away from the connecting hose 20 are rotatably clamped with rotating discs 34, rotating flexible shafts 340 penetrating through the two plugging discs 21 and connected with the rotating discs 34 are arranged in the connecting hose 20, and 8 crushing plates 341 are circumferentially and equidistantly distributed on the rotating discs 34; teeth 3410 are arranged on each crushing plate 341, and auxiliary cutting bars 3411 are arranged on two sides of each crushing plate 341; an anti-corrosion wear-resistant sleeve is sleeved outside the rotary flexible shaft 340; a power motor 342 connected with the rotary flexible shaft 340 is arranged outside the horizontal well; each high-pressure spray head 31 is respectively in sliding clamping connection with the pull rod 210 at the position of alignment; an adjusting pressure plate 35 and a butt joint plate 36 are respectively arranged on the opposite sides of the two plugging plates 21; the adjusting pressure plate 35 is rotationally clamped with the plugging disc 21 at the corresponding position, a second gear ring 350 penetrating through the plugging disc 21 is arranged on one side of the adjusting pressure plate 35, a third micro motor 37 for providing power for the second gear ring 350 is arranged on the second clamping sleeve 212, a limiting groove 351 which is in sliding clamping connection with each mounting rod 30 is arranged on the other side of the adjusting pressure plate 35, and a wedge-shaped sliding block 352 which is in abutting connection with each mounting rod 30 is arranged in the limiting groove 351; the joint of the mounting rod 30 and the wedge-shaped sliding block 352 is rotationally clamped with a ball head 300; butt joint holes 360 are formed in the positions, corresponding to the positions of the mounting rods 30, of the butt joint plates 36, and return springs 361 are arranged in the butt joint holes 360.

Example 8

The embodiment describes a method for uniformly removing blockage and increasing production of a continuous oil pipe of a horizontal well by applying the device of the embodiment 7, which comprises the following steps:

s1, respectively connecting the electric push rod 12, the first micro motor 14, the second micro motor 233, the suction pump 26, the monitoring host, the power motor 342, the third micro motor 37 and the high-pressure pump 33 with an external power supply;

s3, extending the plugging assembly 2 and the unblocking assembly 3 into the horizontal well shaft through the through hole 100; opening the electric push rod 12, enabling the electric push rod 12 to stretch and pull each clamping seat 11 to be close to each other, and enabling each pushing roller 13 to be abutted against the outer wall of the connecting hose 20; then, starting each first micro motor 14, driving each propulsion roller 13 to rotate by utilizing each first micro motor 14, and finally enabling the plugging component 2 and the unplugging component 3 to enter a preset position in the horizontal well shaft; when the plugging assembly 2 and the unblocking assembly 3 enter the horizontal well shaft, the guide wheels 240 on the guide disc 24 roll with the shaft in a friction way; when the connecting hose 20 stretches into the horizontal well shaft, the power motor 342 is started, the power motor 342 is used for driving the rotary flexible shaft 340 to rotate, the rotary disk 34 is used for driving the crushing plate 341 to rotate, and the plugs such as ores accumulated in the shaft are crushed and cleaned;

s5, starting the high-pressure pump 33 and the third micro motor 37, injecting external blocking remover into each high-pressure spray head 31 through the blocking remover pipe 32 by utilizing the high-pressure pump 33, and performing blocking remover high-pressure injection blocking remover operation on blocking holes in a horizontal well shaft; the third micro motor 37 is utilized to drive the adjusting pressure plate 35 to drive the second gear ring 350 to rotate, so that the adjusting pressure plate 35 rotates on the corresponding blocking removing disc 21, and the wedge-shaped sliding blocks 352 on the adjusting pressure plate 35 are utilized to push each mounting rod 30 to reciprocate in the butt joint holes 360 on the butt joint disc 36, so that the high-pressure spray heads 31 on each mounting rod 30 can swing on the pull rods 210, wherein blocking removing liquid is commercially available acidified blocking removing liquid DFSJ-W1; the pressure between the two plugging disks 21 and the well bore is sensed by a pressure sensor, and when the pressure exceeds a preset value, the suction pump 26 is started, and the flowback fluid in the well bore is discharged by the flowback pipe 25.

It should be noted that, the electric push rod 12, the first micro motor 14, the second micro motor 233, the suction pump 26, the monitoring host, the power motor 342, the third micro motor 37 and the high-pressure pump 33 used in the present invention all adopt the prior art, which is not limited herein, and the corresponding products can be selected according to actual needs.

Claims

1. The continuous oil pipe energy increasing and uniform blocking removing and yield increasing device for the horizontal well is characterized by comprising a pushing assembly (1) arranged at the wellhead of the horizontal well, a blocking assembly (2) connected with the pushing assembly (1) and a blocking removing assembly (3) connected with the blocking assembly (2); the propelling component (1) comprises a base (10) with a through hole (100) at the center, a plurality of clamping seats (11) which are clamped on the base (10) in a sliding manner and are positioned in the circumferential direction of the through hole (100), a plurality of electric push rods (12) which are arranged on the base (10) and are respectively and fixedly connected with the clamping seats (11) in a one-to-one correspondence manner, a plurality of propelling idler wheels (13) which are arranged in the clamping seats (11) in a one-to-one correspondence manner, and a plurality of first micro motors (14) which are arranged in the clamping seats (11) and provide power for the propelling idler wheels (13);

the plugging assembly (2) comprises a connecting hose (20) penetrating through the through hole (100) and extending into the horizontal well, two plugging discs (21) fixedly connected to the end parts of the connecting hose (20), rubber plugging bags (22) respectively arranged on the circumferences of the two plugging discs (21), and expansion assemblies (23) respectively arranged on the two plugging discs (21) and used for supporting the rubber plugging bags (22); one of the plugging discs (21) is fixedly connected to the end part of the connecting hose (20), and the other plugging disc (21) is fixedly connected with the plugging disc (21) close to the connecting hose (20) through a plurality of pull rods (210); the inside of the plugging disc (21) is hollow, and a first clamping sleeve (211) and a second clamping sleeve (212) are sequentially arranged in the plugging disc;

the blocking removal assembly (3) comprises a plurality of installation rods (30) which are arranged between two blocking plates (21) and are in one-to-one correspondence with all pull rods (210), a plurality of high-pressure spray heads (31) which are movably hinged to the installation rods (30), blocking removal pipes (32) which are arranged inside the connecting hose (20) and are connected with all the high-pressure spray heads (31) through capillaries, and a high-pressure pump (33) which is arranged outside the horizontal well and is connected with the blocking removal pipes (32).

2. The coiled tubing energy-increasing uniform plugging removal and production increase device for the horizontal well according to claim 1, wherein the expansion assembly (23) comprises a plurality of expansion rods (230) which are rotationally clamped on the circumference of the plugging disc (21), arc-shaped tiles (231) which are movably hinged at the end parts of the expansion rods (230) and are abutted against the inner wall of the rubber plugging bag (22), a first gear ring (232) which is arranged inside the plugging disc (21) and is positioned outside the first gear sleeve (211), and a second micro motor (233) which is arranged inside the plugging disc (21) and is used for providing power for the first gear ring (232); gears (2300) are arranged at the joints of the expansion rods (230) and the plugging disc (21), and the gears (2300) are respectively meshed with the first gear rings (232).

3. The coiled tubing energy-increasing uniform blocking-removing and yield-increasing device for the horizontal well according to claim 1, wherein a rotary disc (34) is rotatably clamped on a blocking disc (21) far away from a connecting hose (20), a rotary flexible shaft (340) penetrating through the two blocking discs (21) and connected with the rotary disc (34) is arranged inside the connecting hose (20), and a plurality of crushing plates (341) are circumferentially and equidistantly distributed on the rotary disc (34); and a power motor (342) connected with the rotary flexible shaft (340) is arranged outside the horizontal well.

4. A coiled tubing energy-increasing uniform plugging removal and production increase device for a horizontal well according to claim 3, wherein teeth (3410) are arranged on each crushing plate (341), and auxiliary cutting strips (3411) are arranged on two sides of each crushing plate (341).

5. The coiled tubing energy-increasing uniform plugging removal and production increase device for the horizontal well according to claim 1, wherein each high-pressure spray head (31) is respectively in sliding clamping connection with a pull rod (210) at an alignment position; an adjusting pressure plate (35) and a butt joint plate (36) are respectively arranged on one side of the two plugging plates (21) opposite to each other; the adjusting pressure plate (35) is rotationally clamped with the plugging plate (21) at the corresponding position, a second gear ring (350) penetrating through the plugging plate (21) is arranged on one side of the adjusting pressure plate (35), a third micro motor (37) for providing power for the second gear ring (350) is arranged on the second clamping sleeve (212), a limit groove (351) which is in sliding clamping connection with each mounting rod (30) is arranged on the other side of the adjusting pressure plate (35), and a wedge-shaped sliding block (352) which is in abutting connection with each mounting rod (30) is arranged in the limit groove (351); butt joint holes (360) are formed in the butt joint disc (36) and in positions corresponding to the mounting rods (30), and reset springs (361) are arranged in the butt joint holes (360).

6. The coiled tubing energy-increasing uniform plugging removal and production increase device for the horizontal well according to claim 5, wherein a ball head (300) is rotatably clamped at the joint of the mounting rod (30) and the wedge-shaped sliding block (352).

7. The coiled tubing energy-increasing uniform blocking-removing and yield-increasing device for the horizontal well according to claim 1, wherein the two blocking disks (21) are provided with guide disks (24) on the side far away from each other, and a plurality of guide wheels (240) are circumferentially and equidistantly distributed on the guide disks (24).

8. The coiled tubing energy-increasing uniform blocking-removing and yield-increasing device for the horizontal well according to claim 3, wherein an anti-corrosion wear-resistant sleeve is sleeved outside the rotary flexible shaft (340).

9. A method for uniformly unblocking and increasing production of a continuous oil pipe of a horizontal well by using the device of any one of claims 1 to 8, comprising the following steps:

s1, respectively connecting an electric push rod (12), a first micro motor (14), an expansion assembly (23) and a high-pressure pump (33) with an external power supply;

s2, fixing the base (10) at the wellhead position of the horizontal well, and enabling the through hole (100) on the base (10) to be opposite to the wellhead of the horizontal well; opening the electric push rod (12), so that the electric push rod (12) is contracted to drive each clamping seat (11) to slide on the base (10) and keep away from each other;

s3, extending the plugging component (2) and the unblocking component (3) into the horizontal well shaft through the through hole (100); opening the electric push rod (12), pulling each clamping seat (11) to be close to each other after the electric push rod (12) stretches, and enabling each pushing roller (13) to be abutted with the outer wall of the connecting hose (20); then, starting each first micro motor (14), driving each propulsion roller (13) to rotate by utilizing each first micro motor (14), and finally enabling the plugging component (2) and the plugging removal component (3) to enter a preset position in a horizontal well shaft;

s4, opening the two expansion assemblies (23) to expand the rubber sealing bags (22) on the two sealing discs (21) so as to realize the sealing between the two sealing discs (21) and the inner wall of the shaft;

s5, starting the high-pressure pump (33), injecting external blocking removing liquid into each high-pressure spray head (31) through the blocking removing pipe (32) by using the high-pressure pump (33), and performing blocking removing liquid high-pressure injection blocking removing operation on blocking holes in the horizontal well shaft.

10. The coiled tubing energy-increasing uniform blocking-removing and yield-increasing device for the horizontal well according to claim 1, wherein a protective sleeve is sleeved on the rotary flexible shaft (340).