CN-122014133-A - Top packer running tool

CN122014133ACN 122014133 ACN122014133 ACN 122014133ACN-122014133-A

Abstract

The invention discloses a top packer sending tool which sequentially comprises a hollow upper joint, a pressure transmission body, an upper joint and a lower joint of a central tube, wherein the upper end of the upper joint is connected with a drill rod, the lower end of the upper joint is fixedly connected with the upper end of the pressure transmission body through a fastener I, the other end of the pressure transmission body is fixedly connected with one end of the upper joint of the central tube through a fastener II, the other end of the upper joint of the central tube is in threaded connection with the lower joint, a plurality of grooves are formed in the circumferential direction of the lower part of the pressure transmission body, a bump spring and a bump are arranged in each groove, the outer side surface of the bump is ejected out of the surface of the pressure transmission body and extends into a corresponding groove position of a packer, a limit sleeve is further arranged on the groove, a chamfer surface is arranged at the edge of the bump, and a sealing part which is isolated and sealed with a sealing barrel of the packer is arranged on the upper joint of the central tube. The invention realizes the rotary setting of the packer, adopts a hydraulic lock and mechanical lock combined mechanism, can circularly improve the operation timeliness and safety with large displacement, and realizes the accurate setting of the packer.

Inventors

CHEN GUANGLI
LI BOREN
LIU HENG
TANG SHAOPENG
ZHU CHANGLIN

Assignees

思达斯易能源技术(集团)有限公司

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (8)

1. The utility model provides a top packer running tool, includes hollow top connection, biography press body, center tube top connection and lower clutch in proper order, the top connection upper end is connected with the drilling rod, its lower extreme with biography press body upper end passes through fastener I fixed connection, biography press the other end of body with center tube top connection one end passes through fastener II fixed connection, the other end of center tube top connection with the lower clutch passes through threaded connection, its characterized in that, biography press body lower part circumference upwards is equipped with a plurality of recesses, every be equipped with lug spring and lug in the recess, the lug spring will the lug lateral surface is ejecting biography press body surface to stretch into on the corresponding trench of packer, still be equipped with on the recess and be used for the restriction lug radial travel distance's stop collar, lug edge has the chamfer face, be equipped with on the center tube top connection with the sealing member of packer seal tube formation isolation seal.
2. The top packer running tool of claim 1, wherein the pressure transfer body is further provided with a piston assembly and a ball seat assembly, the piston assembly being disposed outside the pressure transfer body and above the bump, the ball seat assembly being disposed in a lumen of the pressure transfer body; The piston assembly comprises a piston sleeve, a piston spring, a clamp spring I and a piston pin, wherein the upper end of the piston sleeve is in sealing connection with the pressure transmission body, an annular cavity is formed between the piston sleeve and the pressure transmission body, the piston is arranged in the annular cavity, the inner side surface and the outer side surface of the piston are respectively in sealing connection with the pressure transmission body and the piston sleeve, the clamp spring I is arranged on the pressure transmission body at the upper end of the piston sleeve, an annular groove is further formed in the outer side surface of the lower area of the piston, a spring claw is further arranged on the outer side of the annular groove and connected with the lower end of the piston sleeve, the lower end of the spring claw is in a sawtooth structure which spans the annular groove and is supported on the side wall of the annular groove, and the ball seat assembly is provided with a hydraulic driving structure for driving the piston to move, so that the sawtooth structure at the lower end of the spring claw is separated from the support of the piston and sinks into the annular groove.
3. The top packer running tool of claim 2, wherein the ball seat assembly comprises a top pressure sleeve, a ball seat body, an opening sleeve and a setting ball, the top pressure sleeve is fixed in an upper pipe cavity of the pressure transmission body through threads, a hollow cavity is formed in the middle of the ball seat body and is arranged at the lower end of the top pressure sleeve, a radial annular bulge is formed on the upper portion of the ball seat body, at least a ring groove I, a ring groove II and a ring groove III are sequentially arranged in the pipe cavity of the pressure transmission body from top to bottom, the inner diameters of the ring groove I, the ring groove II and the ring groove III are sequentially reduced, the top pressure sleeve and the annular bulge are arranged in the ring groove I, a plurality of axial holes are formed in the annular bulge, a plurality of supporting blocks are arranged at the upper ends of the annular bulge and are abutted against the lower end of the top pressure sleeve, a cavity communicated with the axial holes is formed between the ball seat body and the ring groove II, the hydraulic pressure sleeve is installed in the hollow cavity and the side face of the pressure transmission sleeve is communicated with the pressure sleeve through the pushing and opening sleeve, and the hydraulic pin is also communicated with the side face of the pressure sleeve is opened through the annular bulge.
4. The top packer running tool of claim 3, wherein the hollow cavity lower portion of the ball seat body is further provided with a hollow ball seat in sealing connection with the ball seat body, the hollow ball seat is fixedly connected with the ball seat body through a pin II, the outer diameter of the setting ball is smaller than the inner diameter of the ball seat body and larger than the inner diameter of the hollow ball seat, the ball seat body above the hollow ball seat is further provided with a radial liquid inlet, and the radial liquid inlet is communicated with the pressure transmission hole when the opening sleeve is pushed by hydraulic pressure.
5. The top packer running tool of claim 3, wherein the ball seat defines a flared opening of progressively smaller size at the inlet.
6. The top packer running tool of any one of claims 2-5, wherein a make-up basket is also provided in the pressure transmitting body lumen below the ball seat assembly, the make-up basket having a plurality of flow channels thereon, the flow channels having an inner diameter less than the outer diameter of the setting ball, the make-up basket being threadably connected to the pressure transmitting body.
7. The top packer running tool of claim 6, wherein the outer portion of the upper base pipe joint is further sleeved with a release piston assembly comprising a pressurizing sleeve, a transition joint, a bushing, a release piston spring, a release piston and a claw type back-lock, the outer circumference of the upper base pipe joint is of a stepped structure, the upper base pipe joint comprises a stepped pipe I, a stepped pipe II and a stepped pipe III in sequence from top to bottom, and the outer diameters of the stepped pipe I, the stepped pipe II and the stepped pipe III are sequentially increased; the transition joint is fixed at the upper end of the stepped pipe I in a threaded manner, a spring pad disc and a sealing ring are sleeved at the lower end of the stepped pipe I, a bushing is sleeved on the stepped pipe I between the transition joint and the spring pad disc, two ends of the bushing are respectively propped against the transition joint and the spring pad disc, a hand-off piston spring is sleeved on the bushing, and two ends of the hand-off piston spring are respectively propped against the spring pad disc and the bushing; the lower part of the hand-off piston is sleeved at the step pipe II in a sealing way, the upper end of the hand-off piston spans over the sealing ring and abuts against the side surface of the spring pad disc, and the sealing ring is respectively in sealing connection with the hand-off piston and the upper joint of the central pipe; The lower part of the hand-off piston is also sleeved with a claw type back-off button, the claw type back-off button is fixedly connected with the hand-off piston through a pin III, a plurality of corresponding axial grooves are respectively arranged at the lower parts of the claw type back-off button and the hand-off piston, a plurality of radially extending convex keys are arranged at the lower part of a stepped pipe II of an upper joint of the central pipe, and the convex keys sequentially penetrate through the axial grooves on the hand-off piston and the claw type back-off button and are used for controlling the claw type back-off button, the hand-off piston and the upper joint of the central pipe to keep synchronous rotation; The step pipe II is further provided with a clamp spring groove, a clamp spring II is arranged in the clamp spring groove, and when the dehydration piston moves upwards through the position of the clamp spring II, the clamp spring II pops up and blocks the lower end of the hand-off piston.
8. The top packer running tool of claim 1, wherein external threads are provided near each end of the lower sub, which are connected to the upper base pipe sub and the tubing, respectively.

Description

Top packer running tool Technical Field The invention belongs to the technical field of petroleum exploitation operation, and relates to a top packer sending tool which is used for full-flow operation of top packer well entering, setting, releasing and pulling out. Background In oil exploitation operation, the top packer is a core downhole tool in oil and gas well completion, oil testing, oil extraction and yield improvement (fracturing/acidizing) operation, and the core function is to realize annular sealing in a shaft sleeve, so that the top packer is a key core tool for oil and gas well exploitation, water control and oil stabilization. The top packer sending tool is a special downhole tool matched with the top packer, helps the top packer to realize the whole flow operation of well entering, setting, releasing and pulling out, and is a core matched execution device of the top packer. The mechanical tool has simple structure, but the hydraulic driving setting force of the hydraulic tool is accurate and controllable, the setting pressure is stable, and the problems that the packer is set in advance and the pipe column cannot rotate when the pipe column is lowered due to pressure fluctuation in the well descending process are also solved. There is a lack of running tools on the market which can rotate down and avoid the false operation of the packer caused by pressure fluctuation, mechanical collision and other reasons. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a top packer feeding tool, which can realize the rotary feeding of a packer, help the packer to be easier to enter a well, and adopt a hydraulic lock and mechanical lock combined mechanism, so that the packer does not act when not throwing a ball, can circularly improve the timeliness and the safety of operation with large displacement, and realize the accurate setting of the packer. The invention adopts the following technical scheme: The utility model provides a top packer running tool, includes hollow top connection, biography press body, center tube top connection and lower clutch in proper order, the top connection upper end is connected with the drilling rod, its lower extreme with biography press body upper end passes through fastener I fixed connection, the other end of biography press body with center tube top connection one end passes through fastener II fixed connection, the other end of center tube top connection with the lower clutch passes through threaded connection, biography press body lower part circumference is equipped with a plurality of recesses, every be equipped with lug spring and lug in the recess, the lug spring will the lug lateral surface is ejecting biography press body surface to stretch into on the corresponding trench of packer, still be equipped with on the recess and be used for the restriction lug radial travel distance's stop collar, lug edge has chamfer face, be equipped with on the center tube top connection with the sealing member of sealing tube isolation seal of packer. Further, the pressure transmission body is also provided with a piston assembly and a ball seat assembly, the piston assembly is arranged outside the pressure transmission body and above the convex block, and the ball seat assembly is arranged in a pipe cavity of the pressure transmission body; The piston assembly comprises a piston sleeve, a piston spring, a clamp spring I and a piston pin, wherein the upper end of the piston sleeve is in sealing connection with the pressure transmission body, an annular cavity is formed between the piston sleeve and the pressure transmission body, the piston is arranged in the annular cavity, the inner side surface and the outer side surface of the piston are respectively in sealing connection with the pressure transmission body and the piston sleeve, the clamp spring I is arranged on the pressure transmission body at the upper end of the piston sleeve, an annular groove is further formed in the outer side surface of the lower area of the piston, a spring claw is further arranged on the outer side of the annular groove and connected with the lower end of the piston sleeve, the lower end of the spring claw is in a sawtooth structure which spans the annular groove and is supported on the side wall of the annular groove, and the ball seat assembly is provided with a hydraulic driving structure for driving the piston to move, so that the sawtooth structure at the lower end of the spring claw is separated from the support of the piston and sinks into the annular groove. The ball seat assembly comprises a jacking sleeve, a ball seat body, an opening sleeve and a setting ball, wherein the jacking sleeve is fixed in an upper pipe cavity of the pressure transmission body through threads, a hollow cavity is formed in the middle of the ball seat body, the hollow cavity is arranged at the lower end of the jacking sleeve, a radial annular bulge is formed on the upper portion