CN114687689B

CN114687689B - Recyclable bridge plug throwing tool

Info

Publication number: CN114687689B
Application number: CN202210425438.9A
Authority: CN
Inventors: 敬俊; 彭扬; 祝效华; 周博文; 何超
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2023-06-23
Anticipated expiration: 2042-04-21
Also published as: CN114687689A

Abstract

The invention discloses a recyclable bridge plug throwing tool, which mainly comprises an electric cylinder, a main sleeve, a transmission pin, a transmission supporting column, an outer sleeve, a gripper transmission table, a limiting ring shearing pin, a gripper limiting ring, a clamping plate and a throwing half buckle, and is characterized in that: the throwing tool is electrified, and the electric cylinder core shaft rotates to drive the electric cylinder core shaft sleeve, the outer sleeve and the throwing half buckle to synchronously move axially. The grippers are subjected to initial pressure and limited by gripper limiting rings, the recyclable bridge plug bearing neck is gripped, and then the throwing and setting actions are performed. When the bridge plug is completely sealed, the electric cylinder rotates, the outer sleeve moves axially upwards, the clamping plate pushes the gripper limiting ring to complete shearing of the limiting ring shearing pin, the gripper limiting ring moves axially upwards along with the clamping plate, limiting of the gripper is released, the gripper rotates clockwise around the rotating shaft under the action of restoring force of the spring, the recyclable bridge plug is loosened, and the recycling and throwing tool is pulled up at the moment. The invention can realize the throwing and setting actions of the recyclable bridge plug and can be repeatedly used.

Description

Recyclable bridge plug throwing tool

Technical Field

The invention relates to a production string plugging tool for petroleum well repair operation, in particular to a recoverable bridge plug throwing tool, and belongs to the technical field of downhole operation processes.

Background

The bridge plug is formed in the early 80 s, and has the advantages of few construction procedures, short period and accurate clamping and sealing positions, so that the bridge plug is widely applied to the oil gas well sealing layer once being developed. At present, the petroleum and natural gas exploration and development technology is continuously developed, the use frequency of the bridge plug is also rapidly increased, and the permanent bridge plug, although meeting engineering requirements in function, has higher use cost; the soluble bridge plug has different requirements on the dissolution speed under different working conditions, and the general applicability is not great.

For the problem of the bridge plug selection, the solution adopted at present is to use a recyclable bridge plug, so that the bridge plug can not only meet the engineering requirement, but also be repeatedly used, and the oil extraction cost is greatly reduced. Therefore, the recyclable bridge plug throwing tool has important significance for improving the well repairing operation efficiency and increasing the comprehensive economic benefit of a single well.

Disclosure of Invention

The invention aims to realize the throwing and setting of a recyclable bridge plug. The recyclable bridge plug throwing tool is provided, the recyclable bridge plug is subjected to setting through the action of the electric cylinder, and the throwing tool is quickly separated from the bridge plug after the setting is finished.

The technical scheme adopted by the invention is as follows:

the utility model provides a recoverable bridging plug puts in instrument, by cable joint, conversion nipple joint, main sleeve, electric jar dabber cover, electric jar post, electric jar axle sleeve, screw thread sleeve, transmission support post nut, driving pin, transmission support post, outer sleeve, transmission post connection platform, tongs transmission platform, tongs spring, spring blanking plug, axis of rotation, tongs, spacing ring shear pin, tongs spacing ring, cardboard, electric jar set screw, put in half knot, to wearing the screw and constitute its characterized in that: the cable connector consists of an upper cable connector, a cable connector cavity and a lower cable connector, and the external thread of the cable connector is used for connecting the cable connector with the conversion nipple. The internal thread of the conversion nipple is used for connecting the lower connector of the cable connector with the conversion nipple, and the external thread of the conversion nipple is used for connecting the main sleeve with the conversion nipple. The main sleeve is connected with the threaded sleeve and the outer sleeve through threads. The electric cylinder core shaft sleeve is provided with 2 through holes, and the through holes at the upper end of the electric cylinder core shaft sleeve and the through holes at the lower end of the electric cylinder core shaft sleeve are used for being matched with the transmission pin. The threaded sleeve is provided with a threaded sleeve external thread and an annular groove, 4 holes are uniformly distributed at the upper end and the lower end of the threaded sleeve respectively, the threaded sleeve external thread is used for connecting the threaded sleeve with the main sleeve, the size of the annular groove is matched with that of the electric cylinder shaft sleeve, the upper end hole is used for installing an electric cylinder positioning screw, and the lower end hole is used for installing a transmission supporting column. The two ends of the transmission supporting column are respectively provided with a thread, the external thread at the upper end is in threaded connection with the hole at the lower end, and the external thread at the lower end is in threaded connection with the nut of the transmission supporting column. The outer sleeve is circumferentially provided with 2 through holes and 3 through grooves, the lower end of the outer sleeve is provided with internal threads, the through holes of the outer sleeve are matched with the transmission pins, the through grooves of the outer sleeve are matched with the clamping plates (the assembly of the outer sleeve and the clamping plates is shown in fig. 13), and the internal threads of the outer sleeve are screwed with the external threads of the throwing half buckle to connect the throwing half buckle. The transmission column connecting table is provided with external threads and 4 through holes, the external threads of the transmission column connecting table are screwed with the internal threads of the gripper transmission table, and the through holes of the transmission column connecting table are used for installing the transmission supporting columns. The hand grip transmission platform is provided with internal threads, 3 through holes and 3 through grooves are uniformly distributed, in each through groove, an in-groove through hole is formed, the hand grip spring is respectively arranged in the through hole of the hand grip transmission platform, the hand grip is respectively arranged in the through groove of the hand grip transmission platform, and the hand grip is connected with the hand grip transmission platform through a rotating shaft. The 3 rotating shafts are respectively inserted into the through holes in the grooves, so that the effect of supporting the grippers and enabling the grippers to rotate around the rotating shafts is achieved. The upper end of the gripper is provided with a through hole, the lower end of the gripper is provided with a pin hole, the gripper through hole is used for installing a rotating shaft, and the gripper pin hole is used for installing a limiting ring shear pin to limit the position of the gripper. The grip limiting ring is circumferentially provided with 3 through holes, and the limiting ring shearing pin is simultaneously matched with the grip limiting ring through holes and the grip pin holes, so that the grip limiting ring is fixed at the lower part of the grip to limit the rotation position of the grip. Put in half knot processing has external screw thread, 2 through-holes and concave station, puts in half knot through-hole and is used for installing to wearing the screw, and two are put in the butt joint, put in half knot concave station's design purpose be convenient for installer operation.

Compared with the prior art, the invention has the beneficial effects that: the spring pin-loaded recyclable bridge plug can be safely and effectively put in and set.

Drawings

FIG. 1 is a schematic illustration of the construction of a recyclable bridge plug running tool;

FIG. 2 is a schematic view of the structure of the electric cylinder;

FIG. 3 is a schematic diagram of the construction of a transition nipple;

fig. 4 is a schematic structural view of the battery cell sleeve;

FIG. 5 is a schematic structural view of a threaded sleeve;

FIG. 6 is a schematic view of the configuration of the drive support post mated with the drive post interface table;

FIG. 7 is a schematic view of the construction of the outer sleeve;

FIG. 8 is a schematic view of the structure of the gripper transmission stage;

FIG. 9 is a schematic view of the structure of the gripper assembly;

FIG. 10 is a schematic view of the structure of the grip;

FIG. 11 is a schematic view of the structure of the grip stop collar;

FIG. 12 is a schematic view of the structure of a release half buckle;

FIG. 13 is a schematic view of the assembly of the outer sleeve with the card;

in the figure: 1. the cable joint, 1a, cable joint upper joint, 1b, cable joint cavity, 1c, cable joint lower joint, 1d, cable joint external screw thread, 2, conversion nipple, 2a, conversion nipple internal screw thread, 2b, conversion nipple external screw thread, 3, main sleeve, 4, electric cylinder mandrel, 5, electric cylinder sleeve, 5a, electric cylinder sleeve upper end through hole, 5b, electric cylinder sleeve lower end through hole, 6, electric cylinder column, 7, electric cylinder sleeve, 8, screw sleeve, 8a, screw sleeve external screw thread, 8b, upper end hole, 8c, lower end hole, 8d, ring groove, 9, transmission support column screw cap, 10, transmission pin, 11, transmission support column, 11a, upper end external screw thread, 11b, lower end external screw thread, 12, outer sleeve, 12a, 12b, an outer sleeve through groove, 12c, an outer sleeve internal thread, 13, a transmission column connecting table, 13a, a transmission column connecting table external thread, 13b, a transmission column connecting table through hole, 14, a gripper transmission table, 14a, a gripper transmission table internal thread, 14b, a gripper transmission table through hole, 14c, a gripper transmission table through groove, 14d, a groove internal through hole, 15, a gripper spring, 16, a spring blanking plug, the hand-operated hydraulic wrench comprises a rotary shaft 17, a hand grip 18a, a hand grip through hole 18b, a hand grip pin hole 19, a limiting ring shear pin 20, a hand grip limiting ring 20a, a hand grip limiting ring through hole 21, a clamping plate 22, an electric cylinder positioning screw 23, a throwing half-buckle 23a, a throwing half-buckle external thread 23b, a throwing half-buckle through hole 23c, a throwing half-buckle concave table 24 and a opposite-penetrating screw.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1-8, the recyclable bridge plug throwing tool is composed of a cable joint 1, a conversion nipple 2, a main sleeve 3, a cylinder mandrel 4, a cylinder sleeve 5, a cylinder column 6, a cylinder sleeve 7, a threaded sleeve 8, a transmission support column nut 9, a transmission pin 10, a transmission support column 11, an outer sleeve 12, a transmission column connecting table 13, a gripper transmission table 14, a gripper spring 15, a spring plug 16, a rotating shaft 17, a gripper 18, a limiting ring shearing pin 19, a gripper limiting ring 20 and a clamping plate 21. The method is characterized in that: the electric cylinder core shaft 4 is in threaded connection with the electric cylinder core shaft sleeve 5, the throwing tool is electrified, the electric cylinder core shaft 4 rotates, and therefore the electric cylinder core shaft sleeve 5 is driven to axially move. The driving pin 10 is simultaneously matched with the 2 through holes of the electric cylinder core shaft sleeve 5 and the outer sleeve through hole 12a, so that the axial displacement of the electric cylinder core shaft sleeve 5 can be transmitted to the outer sleeve 12. The electric core shaft sleeve 5 moves axially, and the outer sleeve 12 and the throwing half buckle 23 move axially along with the electric core shaft sleeve. The spring stopper 16 presses the grip spring 15 in the initial state, so that the grip 18 receives the initial pressure given by the grip spring 15, and at this time, under the combined action of the grip limit ring 20 and the limit ring shear pin 19, the grip 18 cannot rotate around the rotation shaft 17 and maintain a relatively static posture, so that the three grips 18 firmly grip and put the recyclable bridge plug carrier neck. The bridge plug reaches the designated position and the delivery tool is energized, the delivery half-button 23 contacts the bridge plug outer housing, giving the outer housing downward pressure. At the same time the gripping arms 18 grip the load bearing neck and give the load bearing neck an upward pull, the bridge plug is subjected to a pair of reaction forces, effecting a setting action. When the setting of the recyclable bridge plug is completed, the electric cylinder rotates, and the transmission pin 10 drives the outer sleeve 12 to move upwards axially. When the clamping plate 21 butts against the grip limiting ring 20, the outer sleeve 12 is continuously stressed, and after the contact force between the clamping plate 21 and the grip limiting ring 20 reaches a certain limit, the limiting ring shearing pin 19 on the grip limiting ring 20 is sheared. The position of the gripper stop ring 20 determines the angle of rotation of the gripper 18 about the rotation axis 17. The gripper limiting ring 20 moves axially upwards along with the clamping plate 21, the gripper 18 rotates around the rotating shaft 17 under the action of restoring force of the gripper spring 15, the recyclable bridge plug can be loosened, and at the moment, the recyclable bridge plug throwing tool can be pulled and recycled.

The above-described embodiments are intended to illustrate the present patent and not to limit the scope of the present patent, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present patent are intended to be within the scope of the present patent system.

Claims

1. The utility model provides a recoverable bridging plug delivery tool, by cable joint (1), conversion nipple joint (2), main sleeve (3), electric cylinder dabber (4), electric cylinder dabber cover (5), electric cylinder post (6), electric cylinder axle sleeve (7), threaded sleeve (8), transmission support post nut (9), driving pin (10), transmission support post (11), outer sleeve (12), transmission post connection platform (13), tongs transmission platform (14), tongs spring (15), spring stopper (16), axis of rotation (17), tongs (18), spacing ring shear pin (19), tongs spacing ring (20), cardboard (21), electric cylinder set screw (22), put in half knot (23), to wearing screw (24) and constitute, its characterized in that: the cable connector (1) consists of an upper cable connector (1 a), a cable connector cavity (1 b) and a lower cable connector (1 c), and an external cable connector thread (1 d) is used for connecting the cable connector (1) with the conversion nipple (2); the internal thread (2 a) of the conversion nipple is used for connecting the lower connector (1 c) of the cable connector with the conversion nipple (2), and the external thread (2 b) of the conversion nipple is used for connecting the main sleeve (3) with the conversion nipple (2); the main sleeve (3) is connected with the threaded sleeve (8) and the outer sleeve (12) through threads; the electric cylinder core shaft sleeve (5) is provided with 2 through holes, and the through hole (5 a) at the upper end of the electric cylinder core shaft sleeve and the through hole (5 b) at the lower end of the electric cylinder core shaft sleeve are both used for being matched with the transmission pin (10); the threaded sleeve (8) is provided with a threaded sleeve external thread (8 a) and an annular groove (8 d), 4 holes are uniformly distributed at the upper end and the lower end of the threaded sleeve respectively, the threaded sleeve external thread (8 a) is used for connecting the threaded sleeve (8) with the main sleeve (3), the size of the annular groove (8 d) is matched with that of the electric cylinder shaft sleeve (7), the upper end hole (8 b) is used for installing an electric cylinder positioning screw (22), and the lower end hole (8 c) is used for installing a transmission supporting column (11); threads are arranged at two ends of the transmission supporting column (11), an upper external thread (11 a) is in threaded connection with a lower end hole (8 c), and a lower external thread (11 b) is in threaded connection with a transmission supporting column nut (9); the outer sleeve (12) is circumferentially provided with 2 through holes and 3 through grooves, the lower end of the outer sleeve is provided with internal threads, the outer sleeve through hole (12 a) is matched with the transmission pin (10), the outer sleeve through groove (12 b) is matched with the clamping plate (21), and the outer sleeve internal threads (12 c) are screwed with the throwing half-buckle external threads (23 a) to be connected with the throwing half-buckle (23); the transmission column connecting table (13) is provided with external threads and 4 through holes, the external threads (13 a) of the transmission column connecting table are screwed with the internal threads (14 a) of the handle transmission table, and the through holes (13 b) of the transmission column connecting table are used for installing the transmission supporting column (11); the gripper transmission table (14) is provided with internal threads, 3 through holes and 3 through grooves are uniformly distributed, each through groove is internally provided with a through hole in the groove, the gripper transmission table through holes (14 b) are respectively provided with gripper springs (15), the gripper transmission table through grooves (14 c) are respectively provided with grippers (18), and the grippers (18) are connected with the gripper transmission table (14) through rotating shafts (17); the 3 rotating shafts (17) are respectively inserted into the through holes (14 d) in the grooves, and play a role in supporting the grippers (18) and rotating the grippers around the rotating shafts (17); the upper end of the gripper (18) is provided with a through hole, the lower end of the gripper is provided with a pin hole, the gripper through hole (18 a) is used for installing a rotating shaft (17), and the gripper pin hole (18 b) is used for installing a limiting ring shear pin (19) to limit the position of the gripper (18); the gripper limiting ring (20) is circumferentially provided with 3 through holes, and the limiting ring shearing pins (19) are simultaneously matched with the gripper limiting ring through holes (20 a) and the gripper pin holes (18 b) to fix the gripper limiting ring (20) at the lower part of the gripper (18) so as to limit the rotation pose of the gripper (18); the throwing half buckles (23) are provided with external threads, 2 through holes and concave stations in a machining mode, the throwing half buckle through holes (23 b) are used for installing opposite penetrating screws (24), the two throwing half buckles (23) are in butt joint, and the design purpose of throwing half buckle concave stations (23 c) is convenient for an installer to operate.

2. A recyclable bridge plug delivery tool as defined in claim 1, wherein: the electric cylinder core shaft (4) is in threaded connection with the electric cylinder core shaft sleeve (5), and when the throwing tool is electrified, the electric cylinder core shaft (4) rotates, so that the electric cylinder core shaft sleeve (5) is driven to axially move; the transmission pin (10) is matched with 2 through holes of the electric cylinder mandrel sleeve (5) and the outer sleeve through hole (12 a) at the same time, so that the axial displacement of the electric cylinder mandrel sleeve (5) can be transmitted to the outer sleeve (12); the electric cylinder core shaft sleeve (5) axially moves, and the outer sleeve (12) and the throwing half buckle (23) axially move along with the electric cylinder core shaft sleeve; the spring blanking plug (16) presses the gripper spring (15) in an initial state, so that the grippers (18) are subjected to initial pressure given by the gripper spring (15), and the grippers (18) cannot rotate around the rotating shaft (17) and keep a relatively static posture due to the limitation of the gripper limiting rings (20) and the limiting ring shearing pins (19), so that the three grippers (18) firmly grip the recyclable bridge plug bearing neck and perform throwing actions; the bridge plug reaches a designated position, the throwing tool is electrified, the throwing half buckle (23) contacts the bridge plug outer shell, and downward pressure is given to the outer shell; simultaneously, the grippers (18) grip the bearing neck, and give upward tension to the bearing neck, so that the bridge plug receives a pair of reaction forces to realize setting action; when the recoverable bridge plug is completely sealed, the electric cylinder rotates, the transmission pin (10) drives the outer sleeve (12) to move upwards axially, when the clamping plate (21) abuts against the grip limiting ring (20), the outer sleeve (12) is continuously stressed, and after the contact force between the clamping plate (21) and the grip limiting ring (20) reaches a certain limit, the limiting ring shearing pin (19) on the grip limiting ring (20) is sheared; the position of the gripper limiting ring (20) can determine the rotation angle of the gripper (18) around the rotating shaft (17); the gripper limiting ring (20) moves axially upwards along with the clamping plate (21), the gripper (18) rotates around the rotating shaft (17) under the action of restoring force of the gripper spring (15), and the recyclable bridge plug is loosened, so that the recyclable bridge plug throwing tool can be lifted and recycled.