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CN-121993091-A - Automatic control multiple plugging tool

CN121993091ACN 121993091 ACN121993091 ACN 121993091ACN-121993091-A

Abstract

The invention relates to the technical field of oil and gas field exploitation equipment, in particular to an automatic control multiple plugging tool. The automatic control multiple plugging tool comprises a shell, a soluble opening ball and a soluble closing ball, wherein two ends of the shell are connected with an upper connector and a lower connector, the soluble opening ball and the soluble closing ball are placed in a throwing device, an activating device, an automatic control system, an inner sleeve, a ball valve mechanism and a ball basket are sequentially arranged in the shell from top to bottom, the opening ball and the closing ball throwing device push the activating device to move downwards, the pushing distance of the closing ball is longer, the automatic control system controls the inner sleeve to rotate to open and close a circulating hole according to the moving distance of the activating device, the ball valve mechanism synchronously rotates along with the inner sleeve to control a lower flow passage switch, and the ball basket collects the opening ball and the closing ball to wait for the opening ball and the closing ball to be dissolved in drilling fluid. The automatic control multiple plugging tool controls the inner sleeve to rotate to open and close the circulation hole when the opening ball and the closing ball are thrown in, the soluble opening ball and the soluble closing ball do not occupy the space in the basket any more, and the working times are not limited by the accommodating quantity of the basket any more.

Inventors

  • LI LONGTAO
  • KOU ZHIHUI
  • CAO YUBAO
  • WANG GUIRU
  • ZHENG DIANFU
  • XIE SHEN
  • YANG CHAO
  • YANG ZHIJIAN
  • WU LEI
  • WAN FAMING
  • WANG CHUNHUA
  • YU XIAOBO

Assignees

  • 大庆钻探工程有限公司
  • 中国石油天然气集团有限公司

Dates

Publication Date
20260508
Application Date
20251023

Claims (18)

  1. 1. The utility model provides an automatic control many times leaking stoppage instrument, includes casing (2), and the upper and lower both ends of casing (2) are equipped with top connection (1) and lower joint (9) respectively, its characterized in that includes: An opening ball (50) and a closing ball (51), wherein the opening ball (50) and the closing ball (51) are soluble balls, and the diameter of the closing ball (51) is larger than that of the opening ball (50); An activating device is arranged in the shell (2), an automatic control system (5) is arranged below the activating device, a closing ball (51) and an opening ball (50) are put into the shell (2) to push the activating device to move downwards, the distance that the closing ball (51) pushes the activating device to move is larger than that of the opening ball (50), an inner sleeve (6) is arranged below the automatic control system (5), an inner circulation hole (52) and an outer circulation hole (49) which correspond to each other in position are arranged between the inner sleeve (6) and the shell (2), the automatic control system (5) rotates the inner sleeve (6) according to the moving distance of the activating device to control the circulation hole to open and close, a ball valve mechanism (7) is arranged below the inner sleeve (6), the ball valve mechanism (7) is connected with the inner sleeve (6) to rotate along with the inner sleeve (6), a ball basket (8) is arranged above a lower joint (9) in the shell (2), and the ball basket (8) collects and holds the opening ball (50) and the closing ball (51) until the opening ball is dissolved, and a uniformly arranged circulation passage is arranged on the surface of the ball basket (8).
  2. 2. The automatic control multiple plugging tool according to claim 1, wherein the activating device comprises an upper claw ball seat (3) and a lower claw ball seat (4), the upper claw ball seat (3) is located above the lower claw ball seat (4), the bottom end of the upper claw ball seat (3) is in contact with the top end of the lower claw ball seat (4), the upper claw ball seat (3) and the lower claw ball seat (4) are stressed to expand outwards along the circumferential direction, the maximum inner diameter of the lower claw ball seat (4) is larger than the maximum inner diameter of the upper claw ball seat (3), a magnetic block (15) is arranged at the bottom end of the lower claw ball seat (4) and is matched with the automatic control system (5), the inner diameter of the upper claw ball seat (3) is smaller than the diameter of an opening ball (50), the inner diameter of the lower claw ball seat (4) is larger than the diameter of the opening ball (50) and smaller than the diameter of a closing ball (51), and the descending stroke of the lower claw ball seat (4) is larger than the descending stroke of the upper claw ball seat (3).
  3. 3. The automatic control multiple plugging tool according to claim 2, wherein an upper spring (11) which is vertically arranged is arranged between the bottom end of the upper claw ball seat (3) and the inner wall of the shell (2), a lower spring (12) which is vertically arranged is arranged between the bottom end of the lower claw ball seat (4) and the automatic control system (5), an upper expansion groove and a lower expansion groove which are recessed along the circumferential direction are respectively arranged below the upper claw ball seat (3) and the lower claw ball seat (4) on the inner wall of the shell (2), the sizes of the upper expansion groove and the lower expansion groove respectively correspond to the upper claw ball seat (3) and the lower claw ball seat (4), and the distance between the lower expansion groove and the lower claw ball seat (4) is larger than the distance between the upper expansion groove and the upper claw ball seat (3).
  4. 4. An automatically controlled multiple plugging tool according to claim 3, wherein the outer walls of the upper claw ball seat (3) and the lower claw ball seat (4) are provided with annular spring shoulders (18) protruding in the circumferential direction, and the upper springs (11) and the lower springs (12) are mounted between the corresponding spring shoulders (18) and the housing (2).
  5. 5. The automatic control multiple plugging tool according to claim 3, wherein the outer walls of the top ends of the upper claw ball seat (3) and the lower claw ball seat (4) are respectively provided with a ball seat shoulder (17) protruding along the circumferential direction, the bottom end of the upper expansion groove is provided with a shell shoulder (10), the inner diameter of the shell shoulder (10) is smaller than the outer diameter of the ball seat shoulder (17), the maximum inner diameter of the upper claw ball seat (3) expanded after falling into the upper expansion groove is larger than the diameter of the closing ball (51), a limit sleeve (13) is arranged in the lower expansion groove, the bottom end of the limit sleeve (13) is in contact with the automatic control system (5), the top end of the limit sleeve (13) is provided with a limit sleeve upper end face (14), and the limit sleeve upper end face (14) extends upwards into the lower expansion groove to limit the movement of the lower claw ball seat (4).
  6. 6. The automatic control multiple plugging tool according to claim 5, wherein a plurality of limit pins (16) are uniformly arranged between the limit sleeve (13) and the shell (2), and the limit sleeve (13) is connected with the shell (2) through the limit pins (16).
  7. 7. The automatic control multiple plugging tool according to claim 1, wherein the automatic control system (5) is a tubular middle with a through flow passage, a control cavity, a motor cavity, an oil pump cavity and an execution module (28) are sequentially arranged in the side wall of the automatic control system (5) from top to bottom, the control cavity, the motor cavity, the oil pump cavity and the execution module (28) are uniformly annular, an automatic control device is arranged in the control cavity, a motor is arranged in the motor cavity, a gear pump (25) is arranged in the oil pump cavity, a first execution module oil port (38) and a second execution module oil port (39) which are mutually separated and adjustable in size are arranged in the execution module (28), a first oil tank (26) and a second oil tank (27) are arranged below the gear pump (25) and are respectively communicated with the first execution module oil port (38) and the second execution module oil port (39), and the motor drives the gear pump (25) to rotate so as to control pressure oil to flow between the first execution module oil port (38) and the second execution module oil port (39) to drive the execution module (28) to rotate.
  8. 8. The automatic control multiple plugging tool according to claim 7, wherein a control chip (21), a power supply (22), a first hall sensor (19) and a second hall sensor (20) are arranged in the control cavity in sequence from top to bottom, the power supply (22), the first hall sensor (19) and the second hall sensor (20) are all connected with the control chip (21), the control chip (21) is connected with a motor, the first hall sensor (19) drives the motor to rotate to open a circulation hole through the control chip (21) after receiving signals, and the second hall sensor (20) drives the motor to rotate to close the circulation hole through the control chip (21) after receiving signals.
  9. 9. The automatic control multiple plugging tool according to claim 8, wherein the motor comprises a motor stator (23) and a motor rotor (24), the motor stator (23) is fixed in position and connected with the control chip (21), the motor rotor (24) is sleeved on the inner side of the motor stator (23) and the bottom end of the motor rotor is connected with the gear pump (25).
  10. 10. The automatic control multiple plugging tool according to claim 8, wherein the gear pump (25) comprises an annular inner gear (29) and a gear pump shell (34), the gear pump shell (34) is sleeved on the outer side of the inner gear (29), a plurality of driving teeth are uniformly distributed on the outer wall of the inner gear (29), the inner gear (29) is connected with a motor, a plurality of outer gears (30) with fixed positions are uniformly arranged on the outer periphery of the inner gear (29), driven teeth matched with the driving teeth are uniformly arranged on the surface of the outer gear (30), a first gear pump oil port (32) is arranged on the inner wall of the gear pump shell (34) on the right side of each outer gear (30), a second gear pump oil port (33) is arranged on the left side of each outer gear (30), and the first gear pump oil port (32) and the second gear pump oil port (33) are respectively communicated with the first oil tank (26) and the second oil tank (27).
  11. 11. The automatic control multiple plugging tool according to claim 10, wherein a gear pump bearing (31) is provided between the inner wall of the internal gear (29) and the inner wall of the oil pump chamber.
  12. 12. The automatic control multiple plugging tool according to claim 8, wherein the execution module (28) comprises a fixed sleeve (35) and a rotating sleeve (36), the fixed sleeve (35) is composed of an inner layer pipe wall and an outer layer pipe wall, the bottom end of the fixed sleeve is sealed, an annular oil storage space is formed between the inner layer pipe wall and the outer layer pipe wall, the inner layer pipe wall is outwards provided with a convex oil separation piece, the oil separation piece is in an incomplete annular shape, the rotating sleeve (36) is a single layer, the inner wall is provided with a fan-shaped structure matched with the oil storage space, and the rotating sleeve is inserted into the oil storage space from top to bottom and matched with the oil separation piece to separate the oil storage space into a first execution module oil port (38) and a second execution module oil port (39) which are not communicated with each other.
  13. 13. The automatic controlled multiple plugging tool according to claim 12, wherein a plurality of downwardly extending rotary sleeve handles (37) are uniformly provided at the bottom end of the outer edge of the rotary sleeve (36).
  14. 14. The automatic control multiple plugging tool according to claim 13, wherein an inner circulation hole (52) corresponding to the outer circulation hole (49) is formed in the outer wall of the inner sleeve (6), an annular raised step structure is formed at the top end of the inner sleeve (6), the height and the diameter of the step are corresponding to the size of the rotary sleeve handle (37), a through pin hole (40) is formed in the position, corresponding to the rotary sleeve handle (37), of the step side wall, and a sleeve pin (53) is arranged in the pin hole (40) to connect the inner sleeve (6) and the rotary sleeve handle (37).
  15. 15. The automatic control multiple plugging tool according to claim 1, wherein the ball valve mechanism (7) comprises a ball valve upper joint (41) and a ball valve lower joint (42), the top end of the ball valve upper joint (41) is connected with the inner sleeve (6), the top end of the ball valve lower joint (42) is inserted into the inner wall of the bottom end of the ball valve upper joint (41) and fixedly connected with the ball valve upper joint (41), through runners are arranged in the ball valve upper joint (41) and the ball valve lower joint (42), a rotatable ball body (43) is arranged in the ball valve lower joint (42), and a through hole concentric with the runners and the same in diameter is arranged in the middle of the ball body (43).
  16. 16. The automatic control multiple plugging tool according to claim 15, wherein the surface of the ball body (43) is centered on the through hole, mounting planes are symmetrically arranged on the left and right sides, a ball body rotating pin (45) is arranged at the center of the mounting planes, one end of the ball body rotating pin (45) is inserted into the mounting plane, the other end of the ball body rotating pin is inserted into the inner wall of the ball valve lower joint (42), and the ball body (43) rotates around the ball body rotating pin (45).
  17. 17. The automatic control multiple plugging tool according to claim 16, wherein a cross-shaped rotating groove is formed in the installation plane by taking a ball rotating pin (45) as a center, a ball valve shifting fork (46) is arranged at each position, corresponding to the position of the rotating groove, of the inner wall of the shell (2), one end of the ball valve shifting fork (46) is fixed on the inner wall of the shell (2), the other end of the ball valve shifting fork penetrates through the ball valve upper joint (41) and the ball valve lower joint (42) to extend into the rotating groove, and shifting fork grooves which are circumferentially arranged and correspond to the positions of the ball valve shifting fork (46) are formed in the ball valve upper joint (41) and the ball valve lower joint (42).
  18. 18. The automatic control multiple plugging tool according to claim 17, wherein the upper and lower ends of the ball body (43) and the ball valve upper joint (41) and the ball valve lower joint (42) are respectively provided with an upper sealing member (47) and a lower sealing member (48).

Description

Automatic control multiple plugging tool Technical Field The invention relates to the technical field of oil and gas field exploitation equipment, in particular to an automatic control multiple plugging tool. Background In the development work of oil and gas wells in oil fields, a plugging tool needs to be put into the well along with a downhole tool string, a circulating hole of the tool needs to be opened when lost circulation occurs in the drilling process, and the tool circulating hole needs to be closed when plugging is finished. In the prior art, the plugging tool usually adopts a mode of downwards casting resin balls or steel balls to open and close the circulation holes in the plugging tool, the balls put into the well are collected into the basket of the tool, the times of opening and closing the circulation holes which can be carried out by the tool depend on the accommodation capacity of the basket, and the accommodation capacity of the basket reaches the limit after 4-6 times of opening and closing the circulation holes in general, so that the plugging operation cannot be continued. In the easily leaking block with frequent lost circulation accidents, the limited accommodation amount of the basket is insufficient to support the requirement of long-time operation on the lost circulation work times. Therefore, the utility model provides an automatic control multiple plugging tool aiming at the defects. Disclosure of Invention First, the technical problem to be solved Aiming at the defects of the prior art, the invention provides an automatic control multiple leaking stoppage tool, which solves the problems that the number of times of opening and closing circulation holes of the leaking stoppage tool in the prior art is limited by the accommodation amount of a basket and cannot adapt to the long-time operation requirement in an easy leaking block. (II) technical scheme In order to solve the problems, the invention provides an automatic control multiple plugging tool, which comprises a shell, wherein an upper connector and a lower connector are respectively arranged at the upper end and the lower end of the shell, and the automatic control multiple plugging tool further comprises: an opening ball and a closing ball, the opening ball and the closing ball being soluble balls, the diameter of the closing ball being larger than the opening ball; The automatic ball valve mechanism is arranged below the inner sleeve and connected with the inner sleeve to rotate along with the inner sleeve, a ball basket is arranged above a lower joint in the shell, the ball basket collects and retains the opening ball and the closing ball until the opening ball and the closing ball are dissolved, and a uniformly arranged through-flow channel is arranged on the surface of the ball basket. The activating device comprises an upper claw-shaped ball seat and a lower claw-shaped ball seat, wherein the upper claw-shaped ball seat is arranged above the lower claw-shaped ball seat, the bottom end of the upper claw-shaped ball seat is in contact with the top end of the lower claw-shaped ball seat, the upper claw-shaped ball seat and the lower claw-shaped ball seat are stressed to expand outwards along the circumferential direction, the maximum inner diameter of the lower claw-shaped ball seat is larger than the maximum inner diameter of the upper claw-shaped ball seat, a magnetic block is arranged at the bottom end of the lower claw-shaped ball seat and is matched with an automatic control system, the inner diameter of the upper claw-shaped ball seat is smaller than the opening ball diameter, the inner diameter of the lower claw-shaped ball seat is larger than the opening ball diameter and smaller than the closing ball diameter, and the descending stroke of the lower claw-shaped ball seat is larger than the descending stroke of the upper claw-shaped ball seat. The automatic control device comprises an upper claw-shaped ball seat, a lower claw-shaped ball seat, an automatic control system, an upper spring, a lower spring, an upper expansion groove, a lower expansion groove and a lower expansion groove, wherein the upper spring is vertically arranged between the bottom end of the upper claw-shaped ball seat and the inner wall of the shell, the lower spring is vertically arranged between the bottom end of the lower claw-shaped ball seat and the automatic control system, the upper expansion groove and the lower expansion groove are respectively arranged below the upper claw-shaped ball seat and the lower claw-shaped ball seat and are recessed along the circumferential direction, the sizes of the upper expansion groove and the lower expansion groove correspond to the upper claw-shaped ball seat and the lower claw-shaped ball seat respectively, and the distance between the lower expansion groove and the lower claw-shaped ball seat is larger than the distance between the upper expansion groove and the upper claw-shaped ball seat. Preferab