CN209892154U

CN209892154U - Full-drift-diameter drilling-plug-free cementing device

Info

Publication number: CN209892154U
Application number: CN201821701635.4U
Authority: CN
Inventors: 成卫海; 尚同春; 张晨阳; 姜海强; 马虎子; 王修朝; 刘红; 刘延文; 唐志强; 李瑞国
Original assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2018-10-19
Filing date: 2018-10-19
Publication date: 2020-01-03
Anticipated expiration: 2028-10-19

Abstract

A full-diameter drilling-free cementing device comprises an upper joint, a snap ring seat, a valve body, a snap ring, a pushing sleeve, a pressing sleeve shear pin, a closing sleeve, an opening pin, a salvaging snap ring seat, an opening sliding sleeve, a salvaging snap ring, a communicating joint, a valve ball, a joint, an upper locking block, an upper shear pin, a locking block sleeve, a valve seat, an upper pressure pipe, an inner pipe, a sealing assembly, a sealing pipe, a plug-taking shear pin, a lower locking block, a pressure transmission inner pipe and a lower pressure transmission pipe, wherein a formed cementing channel can be closed after cementing, the pushing sleeve, the pressing sleeve shear pin, the salvaging snap ring seat, the salvaging snap ring, the joint, the valve ball, the upper locking block, the locking block sleeve, the valve seat, the inner pipe, the sealing assembly, the plug-taking shear pin and the lower locking block are taken out after coagulation, the remaining snap ring seat, the closing sleeve, the opening sliding sleeve, the joint, the upper pressure transmission pipe, the sealing pipe and the, the drift diameter after well completion is the same as the inner diameter of the casing, the well repair and oil production at the later stage are convenient, common tools can be put in, and the economic benefit is remarkable.

Description

Full-drift-diameter drilling-plug-free cementing device

Technical Field

The utility model relates to a downhole tool that oil field well completion well cementation was used is a full latus rectum and exempts from to bore stopper cementing device.

Background

The conventional well cementing method of the oil field is to connect the differential pressure type grading hoop at the upper end of the external packer, the lower end of the external packer is connected with the short circuit of the blind plate, after the cementing well cementing is finished, the lower pipe column is provided with a grinding shoe to grind off the blind plate, the defects of easy drilling and damage of a closing sleeve, irregular drift diameter of a well part left after the drilling and plugging and the like exist in the process of milling and drilling and plugging, the existing drilling-free grading hoop has a complex structure and can not realize the circular well washing. Therefore, scientific research personnel develop a circulating drilling-plug-free well completion device, and can overcome the existing problems. However, the drift diameter of the existing circulating type drilling plug-free well completion device is smaller than the inner diameter of the casing, the problem of reducing diameter occurs, and common well repair tools and production tools cannot be put into the circulating type drilling plug-free well completion device, so that later-stage oil production is inconvenient.

Disclosure of Invention

The utility model aims at providing a full latus rectum is exempted from to bore stopper cementing device makes it exempt from to bore the stopper, improves well cementation quality and efficiency of construction to the latus rectum after guaranteeing the well completion is the same with the sleeve pipe internal diameter, provides convenience for later stage well workover, oil recovery.

The purpose of the utility model is realized like this: comprises an upper joint, a snap ring seat, a valve body, a snap ring, a pushing sleeve, a pressing sleeve shear pin, a closing sleeve, an opening pin, a salvaging snap ring seat, an opening sliding sleeve, a salvaging snap ring, a communicating joint, a valve ball, a joint, an upper lock block, an upper shear pin, a lock block sleeve, a valve seat, an upper pressure pipe, an inner pipe, a sealing assembly, a sealing pipe, a plug-taking shear pin, a lower lock block, a pressure transmission inner pipe and a lower pressure transmission pipe, wherein the lower lock block is arranged in a hole groove at the lower part of the sealing assembly, the sealing assembly is sleeved on the inner pipe to ensure that the lower lock block is restrained and cannot move radially, the plug-taking shear pin connects the inner pipe and the sealing assembly into a whole, the sealing pipe is sleeved outside the sealing assembly, the upper part of the pressure transmission inner pipe is connected with the lower part of the sealing pipe to ensure that the inner pipe and the sealing pipe are locked together by the lower lock block, the valve seat is arranged in, the locking block sleeve is sleeved on the communicating joint, the locking block sleeve restrains the locking block from moving radially, the upper shear pin connects the locking block sleeve to the upper locking block, the valve ball is located on the valve seat, the communicating joint is provided with an inner connecting through hole, the salvaging snap ring is placed in the salvaging snap ring seat, the lower part of the salvaging snap ring seat is connected with the upper part of the communicating joint, the side wall of the upper pressure pipe is provided with a pressure transmission channel, the upper part of the sealing pipe is connected with the lower inner part of the upper pressure pipe, the connecting part is positioned at the inner side of the pressure transmission channel, the upper part of the lower pressure pipe is connected with the lower part of the upper pressure pipe, the connecting part keeps sealed, the upper part of the upper pressure pipe is communicated with the inner part of the lower pressure pipe through the pressure transmission channel, the upper part of the inner pipe is connected with the lower part of the communicating joint, the upper part of the thrust sleeve is inserted into the lower part of the snap ring seat, the outer diameter of the upper part of the thrust sleeve is larger than the inner diameter of, the diameter of the pushing sleeve can be reduced to be smaller than the inner diameter of the upper part of the clamping ring seat, the pushing sleeve is provided with a middle connection through hole, the pushing sleeve is connected to the clamping ring seat through a pressing sleeve shear pin, the clamping ring is sleeved outside the clamping ring seat, the upper part of the closing sleeve is connected with the lower part of the clamping ring seat, the joint keeps sealed, the clamping ring is limited between the closing sleeve and the clamping ring seat and cannot move axially, the outer diameter of the upper part of the pushing sleeve is larger than the inner diameter of the lower part of the closing sleeve, the upper part of the clamping ring seat is inserted into the lower part of the upper joint, the insertion part keeps sealed, the valve body is provided with an outer connection through hole, the opening sliding sleeve is arranged in the valve body and covers the outer connection through hole, two groups of sealing rings are arranged between the opening sliding sleeve and the valve body, one group of sealing rings is arranged above the outer connection through hole, the opening sliding sleeve is connected to, the upper portion of joint and the sub-unit connection of valve body, the lower part that makes to open the sliding sleeve inserts in the upper portion that connects, and the department of inserting keeps sealed, and the lower part of valve body has the discharge hole, the discharge hole be in open the sliding sleeve on the up end of joint under the circular bead face, the valve body suit is outside closing the cover, the upper portion of valve body and the sub-unit connection of top connection make salvage snap ring seat, lock piece cover insert bulldoze in the cover, well antithetical couplet through-hole and interior antithetical couplet through-hole UNICOM, have the snap ring groove on the inner wall of valve body, the snap ring groove be under the snap ring, close the cover and close down close when outer antithetical couplet through-hole the snap ring be in the snap ring groove, close the lower part and the valve.

The inner diameters of the snap ring seat, the closing sleeve, the opening sliding sleeve, the joint, the upper pressure transmission pipe, the sealing pipe and the pressure transmission inner pipe are the same and equal to the inner diameter of the sleeve.

The utility model has the advantages that: the well cementing device does not need a drilling plug, is easy to salvage, can improve the well cementing quality and the construction efficiency, has the same drift diameter after well completion as the inner diameter of a casing, is convenient to repair and recover the well in the later period, can be used for running common tools, and has remarkable economic benefit.

Drawings

Fig. 1 is an assembly view of an embodiment of the present invention.

Fig. 2 is an assembly view of the upper half of fig. 1 divided into two sections.

Fig. 3 is an assembly view of the lower half of fig. 1 divided into two sections.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As can be seen from the figure, the embodiment of the present invention comprises an upper connector 1, a snap ring seat 2, a valve body 3, a snap ring 4, a pushing sleeve 5, a pressing sleeve shear pin 6, a closing shear pin 8, a closing sleeve 9, an opening pin 11, a salvaging snap ring seat 12, an opening sliding sleeve 13, a salvaging snap ring 14, a communication connector 17, a valve ball 18, a connector 19, an upper lock block 20, an upper shear pin 21, a lock block sleeve 22, a valve seat 23, an upper pressure pipe 24, an inner pipe 26, a sealing assembly 27, a sealing pipe 28, a plug shear pin 29, a lower lock block 30, a pressure transmission inner pipe 31, a lower pressure transmission pipe 32, a lower lock block 30 placed in a hole groove at the lower part of the sealing assembly 27, the sealing assembly 27 sleeved on the inner pipe 26, so that the lower lock block 30 is restrained and unable to move radially, the plug shear pin 29 integrally connects the inner pipe 26 and the sealing assembly 27, the sealing pipe 28 sleeved outside the sealing assembly 27, the upper part of the pressure transmission pipe 31, the inner pipe 26 and the sealing pipe 28 are locked together by a lower locking block 30, a valve seat 23 is arranged in the lower part of a communication joint 17, an upper locking block 20 is arranged in a slotted hole of the communication joint 17, the inner end of the upper locking block 20 clamps the valve seat 23, a locking block sleeve 22 is sleeved on the communication joint 17, the locking block sleeve 22 restrains the locking block 20 from moving radially, an upper shear pin 21 connects the locking block sleeve 22 to the upper locking block 20, a valve ball 18 is positioned on the valve seat 23, an inner communication through hole 16 is arranged on the communication joint 17, a salvaging snap ring 14 is arranged in a salvaging snap ring seat 12, the lower part of the salvaging snap ring seat 12 is connected with the upper part of the communication joint 17, a pressure transfer passage 25 is arranged on the side wall of the upper pressure transfer pipe 24, the upper part of the sealing pipe 28 is connected with the lower inner part of the upper pressure transfer pipe 24, the connecting part is positioned at the inner side of the pressure transfer passage 25, the upper part of the lower pressure, the upper part of an upper pressure transmission pipe 24 is communicated with the interior of a lower pressure transmission pipe 32 through a pressure transmission channel 25, the upper part of an inner pipe 26 is connected with the lower part of a communication joint 17, the upper part of a pushing sleeve 5 is inserted into the lower part of a snap ring seat 2, the outer diameter of the upper part of the pushing sleeve 5 is larger than the inner diameter of the upper part of the snap ring seat 2, the part, with the outer diameter of the upper part of the pushing sleeve 5 larger than the inner diameter of the upper part of the snap ring seat 2, of the snap ring seat 2 is milled into a strip body so as to be reduced to be smaller than the inner diameter of the upper part of the snap ring seat 2, a middle connection through hole 15 is arranged on the pushing sleeve 5, the pushing sleeve 5 is connected onto the snap ring seat 2 through a pressing sleeve shear pin 6, after the snap ring 4 is sleeved outside the snap ring seat 2, the upper part of a closing sleeve 9 is connected with the lower part of the snap ring seat 2, the connection part keeps sealed, the snap ring 4 is limited between the closing sleeve 9 and cannot axially, the upper part of the snap ring seat 2 is inserted into the lower part of the upper joint 1, the insertion part keeps sealed, the valve body 3 is provided with an external connection through hole 10, an opening sliding sleeve 13 is arranged in the valve body 3, the opening sliding sleeve 13 covers the external connection through hole 10, two groups of sealing rings are arranged between the opening sliding sleeve 13 and the valve body 3, one group of sealing rings are arranged on the external connection through hole 10, one group of sealing rings are arranged below the external connection through hole 10, the opening sliding sleeve 13 is connected on the valve body 3 through an opening pin 11, the opening pin 11 is arranged between the two groups of sealing rings arranged between the opening sliding sleeve 13 and the valve body 3, the upper part of the joint 19 is connected with the lower part of the valve body 3, so that the lower part of the opening sliding sleeve 13 is inserted into the upper part of the joint 19, the insertion part keeps sealed, the lower part of the valve body 3 is provided with a discharge hole 33, the discharge, the upper portion of valve body 3 and the sub-unit connection of top connection 1 make salvage snap ring seat 12, locking piece cover 22 insert push away in the cover 5, well antithetical couplet through-hole 15 and the 16 UNICOM of inline through-hole, have snap ring groove 7 on the inner wall of valve body 3, snap ring groove 7 be under snap ring 4, close cover 9 and close down snap ring 4 be in when the outlink through-hole 10 snap ring groove 7 in, there is the sealing washer between lower part and the valve body 3 of closing cover 9, close cover 9 by closing shear pin 8 and connect on valve body 3. The snap ring seat 2, close cover 9, open sliding sleeve 13, connect 19, go up the internal diameter of pressure pipe 24, sealed tube 28, biography pressure inner tube 31 the same, equal the sleeve pipe internal diameter, so the utility model relates to a full latus rectum.

The utility model discloses form sealedly with sealed assembly 27 expansion and sealed tube 28 with the instrument during the equipment, during the well descending, valve ball 18 does not drop into. The utility model discloses a sub-unit connection outside of tubes packer along with the well completion sleeve pipe is gone into the pit shaft that needs the well completion in, can circulate and wash the well. And (3) putting a valve ball 18, pressurizing to 7MPa to seal the external pipe packer at the lower part, and then pressurizing to 9MPa to close the external pipe packer. And then the pressure is increased to 16MPa-18MPa, the opening pin 11 is broken, the sliding sleeve 13 is opened to slide downwards, the outer connecting through hole 10 is opened, the outer connecting through hole 10, the middle connecting through hole 15 and the inner connecting through hole 16 are communicated, cement slurry injection well cementation can be carried out, after the prepared cement slurry is injected, a replacement rubber plug is placed in the sleeve, then the pressure is carried out, the replacement rubber plug pushes the cement slurry in the sleeve to downwards enter the pushing and pressing sleeve 5, the pressing sleeve shear pin 6 and the upper shear pin 21 are deduced, the locking block sleeve 22 falls, the valve seat 23 is released to fall, the pushing and pressing sleeve 5 can downwards push and press the closing sleeve 9, the outer connecting through hole 10 is closed, the injected cement slurry cannot return, and the clamping ring 4 is clamped downwards along with the closing sleeve 9 in the clamping ring groove 7 to fix the closing sleeve 9. At the moment, the lower part of the placed rubber plug is clamped and locked by the snap ring 4, after cement slurry is solidified, the sleeve is solidified, then a fishing tool is put in to fish the rubber plug and lift the rubber plug, the plug-taking shear pin 29 is broken, the lower lock block 30 can move radially after the inner pipe 26 moves upwards, the seal assembly 27 is separated from the seal pipe 28, the push sleeve 5, the press sleeve shear pin 6, the fishing snap ring seat 12, the fishing snap ring 14, the communication joint 17, the valve ball 18, the upper lock block 20, the lock block sleeve 22, the valve seat 23, the inner pipe 26, the seal assembly 27, the plug-taking shear pin 29 and the lower lock block 30 can be taken out, the inner diameter of the left part is the same as the inner diameter of the sleeve, and the full through.

Although the upper outer diameter of the pushing sleeve 5 is larger than the upper inner diameter of the snap ring holder 2, the upper outer diameter of the pushing sleeve 5 larger than the upper inner diameter of the snap ring holder 2 is milled into a strip body, and when the pushing sleeve 5 is pulled up, the diameter can be reduced to be smaller than the upper inner diameter of the snap ring holder 2, so that the pushing sleeve can be proposed.

Claims

1. The utility model provides a full latus rectum is exempted from to bore and is filled in cementing device, includes top connection (1), snap ring seat (2), valve body (3), snap ring (4), bulldoze cover (5), press set shear pin (6), close shear pin (8), close cover (9), open pin (11), salvage snap ring seat (12), open sliding sleeve (13), salvage snap ring (14), UNICOM connects (17), valve ball (18), connect (19), go up locking block (20), go up shear pin (21), locking piece cover (22), disk seat (23), go up pressure pipe (24), inner tube (26), sealed assembly (27), sealed pipe (28), get stopper nail (29), lower locking piece (30), pass pressure inner tube (31), pass pressure pipe (32) down, characterized by: the lower lock block (30) is placed in a hole groove at the lower part of the sealing assembly (27), the sealing assembly (27) is sleeved on the inner tube (26), so that the lower lock block (30) is restrained and cannot move radially, the plug-taking shear pin (29) connects the inner tube (26) and the sealing assembly (27) into a whole, the sealing tube (28) is sleeved outside the sealing assembly (27), the upper part of the pressure transmission inner tube (31) is connected with the lower part of the sealing tube (28), so that the inner tube (26) and the sealing tube (28) are locked together by the lower lock block (30), the valve seat (23) is installed in the lower part of the communicating joint (17), the upper lock block (20) is installed in a groove hole of the communicating joint (17), the inner end of the upper lock block (20) clamps the valve seat (23), the lock block sleeve (22) is sleeved on the communicating joint (17), the lock block sleeve (22) restrains the upper lock block (20) so that the upper lock block sleeve (22) cannot move radially, and the upper lock sleeve (21) is connected with the upper lock block sleeve (20), the valve ball (18) is located on the valve seat (23), the communication joint (17) is provided with an internal connection through hole (16), the fishing snap ring (14) is placed in the fishing snap ring seat (12), the lower part of the fishing snap ring seat (12) is connected with the upper part of the communication joint (17), the side wall of the upper pressure pipe (24) is provided with a pressure transmission channel (25), the upper part of the sealing pipe (28) is connected with the lower internal part of the upper pressure pipe (24), the connecting part is positioned at the inner side of the pressure transmission channel (25), the upper part of the lower pressure transmission pipe (32) is connected with the lower part of the upper pressure transmission pipe (24), the connecting part is kept sealed, the upper part of the upper pressure transmission pipe (24) is communicated with the internal part of the lower pressure transmission pipe (32) through the pressure transmission channel (25), the upper part of the inner pipe (26) is connected with the lower part of the communication joint (17), the upper part of the pushing sleeve (5) is inserted into the lower part of the snap ring seat (2), and the outer diameter of the upper part of the pushing sleeve, the outer diameter of the upper part of the pushing sleeve (5) is larger than the inner diameter of the upper part of the snap ring seat (2), the part of the pushing sleeve (5) with the outer diameter larger than the inner diameter of the upper part of the snap ring seat (2) is milled into a strip body, the diameter of the strip body can be reduced to be smaller than the inner diameter of the upper part of the snap ring seat (2), a middle connection through hole (15) is arranged on the pushing sleeve (5), the pushing sleeve (5) is connected to the snap ring seat (2) through a pressing sleeve shear pin (6), the snap ring (4) is sleeved outside the snap ring seat (2), the upper part of the closing sleeve (9) is connected with the lower part of the snap ring seat (2), the connection part is kept sealed, the snap ring (4) is limited between the closing sleeve (9) and the snap ring seat (2) and cannot axially move, the outer diameter of the upper part of the pushing sleeve (5) is larger than the inner diameter of the lower part of the closing sleeve (9), the upper part of the snap ring seat (2) is, opening sliding sleeve (13) and covering outer antithetical couplet through-hole (10), opening and having two sets of sealing washer between sliding sleeve (13) and valve body (3), a set of sealing washer is in outer antithetical couplet through-hole (10) below, open sliding sleeve (13) and connect on valve body (3) by opening pin (11), opening pin (11) are in opening between two sets of sealing washer between sliding sleeve (13) and valve body (3), the upper portion and the lower part of valve body (3) of joint (19) are connected, make the lower part of opening sliding sleeve (13) insert in the upper portion of joint (19), the department of inserting keeps sealed, the lower part of valve body (3) has discharge hole (33), discharge hole (33) be in opening below the shoulder face of sliding sleeve (13) on the up terminal surface of joint (19), valve body (3) suit is outside closing cover (9), the upper portion of valve body (3) and the sub-unit connection of top connection (1) make salvage snap ring seat (12), locking piece cover (22) insert push away and press in cover (5), well antithetical couplet through-hole (15) and antithetical couplet through-hole (16) UNICOM, have snap ring groove (7) on the inner wall of valve body (3), snap ring groove (7) be in under snap ring (4), close cover (9) and close down hookup through-hole (10) time snap ring (4) be in snap ring groove (7) in, close the sealing washer between lower part and the valve body (3) of cover (9), close cover (9) by closing shear pin (8) and connect on valve body (3).

2. The full bore plug-free cementing device according to claim 1, which is characterized in that: the inner diameters of the snap ring seat (2), the closing sleeve (9), the opening sliding sleeve (13), the joint (19), the upper pressure transmission pipe (24), the sealing pipe (28) and the pressure transmission inner pipe (31) are the same and equal to the inner diameter of the sleeve.