CN210049825U

CN210049825U - Bag type whipstock

Info

Publication number: CN210049825U
Application number: CN201920549930.0U
Authority: CN
Inventors: 董乔云; 秦川; 朱荣; 王登飞; 蒋飞
Original assignee: YANCHENG XINYUAN PETROCHEMICAL MACHINERY CO Ltd
Current assignee: YANCHENG XINYUAN PETROCHEMICAL MACHINERY CO Ltd
Priority date: 2019-04-22
Filing date: 2019-04-22
Publication date: 2020-02-11
Anticipated expiration: 2029-04-22

Abstract

The utility model discloses a bag-type whipstock, which comprises an upper joint, an outer sleeve, a guide block cover, a guide block, a release plunger, a connecting rod, a rotating arm assembly, a guide cylinder, a lower joint and a nose tip, wherein the guide block is connected with a small leaf spring and is arranged in an opening of the guide block cover, and the release plunger is inserted into an inner hole of the guide block cover; the guide block cover and the release plunger are arranged in an inner hole of the outer sleeve, and the guide block faces to an axial opening groove on the outer cylinder of the outer sleeve; the connecting rod is inserted into the slot at the other end of the outer sleeve; the rotating arm assembly comprises a rotating arm, a ball seat, a small spring and a spring seat sleeve, wherein the ball seat, the small spring and the spring seat sleeve are arranged in the rotating arm; a flat male joint at one end of the lower joint is inserted into the opening end of the rotating arm corresponding to the female joint, and a flat female joint at the other end of the rotating arm is inserted onto the flat male joint of the connecting rod correspondingly; the other threaded end of the outer sleeve is sequentially screwed with a screw cap and a guide cylinder, and one side of the guide cylinder is provided with an oval bag-type opening. The utility model discloses can provide the eccentricity of certain distance, be suitable for the eccentric working barrel of multiple specification.

Description

Bag type whipstock

Technical Field

The utility model belongs to the technical field of the oil field equipment whipstock, in particular to bag type whipstock.

Background

The whipstock has various structures, such as a hydraulic whipstock, a continuous whipstock, a wedge whipstock and the like, different whipstocks are selected according to different well conditions and process requirements, and the common whipstocks mainly have a whipstock function and have respective advantages and disadvantages.

However, in the prior art, when the gas lift valve, the gas injection valve and the water distributor are thrown or fished in the underground eccentric working barrel, a special deflecting tool is lacked. The designed bag-type whipstock is one of main matched tools for steel wire operation, and is fully verified and well used in throwing and fishing field application.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects of the prior art, the bag type whipstock is specially designed, and can provide an eccentric distance with a certain distance; the bag whipstock with various specifications can be designed, and is suitable for eccentric working barrels with various corresponding specifications; the throwing and fishing risk is small, the operation time is short, and the cost is low; the tool is simple to operate, reliable in deflecting and convenient to use and maintain.

The technical scheme is as follows: the bag-type whipstock comprises an upper joint, an outer sleeve, a guide block cover, a guide block, a release plunger, a connecting rod, a rotating arm assembly, a guide cylinder, a lower joint and a nose tip, wherein the guide block is connected with a small leaf spring through a pair of screws and is arranged in an opening of the guide block cover; the release plunger is inserted into an inner hole of the guide block cover; a large spring is sleeved on the outer cylinder of the release plunger; the guide block cover and the release plunger are installed in the inner hole of the outer sleeve and can move freely, and the guide block faces to an axial opening groove on the outer cylinder of the outer sleeve; an internal thread at one end of the outer sleeve close to the axial open slot is connected and tightened with an external thread of the upper joint; the connecting rod is inserted into the groove at the other end of the outer sleeve, and one end of the connecting rod handle is pressed on the milling plane at one end of the release plunger; the rotating arm assembly comprises a rotating arm, a ball seat, a small spring and a spring seat sleeve, wherein the ball seat, the small spring and the spring seat sleeve are arranged in the rotating arm; a flat male joint at one end of the lower joint is inserted into the opening end of the rotating arm corresponding to the female joint, and a flat female joint at the other end of the rotating arm is inserted onto the flat male joint of the connecting rod correspondingly; the nut and the guide cylinder are sequentially screwed on the other threaded connecting end of the outer sleeve, an oval bag-type opening is formed in one side of the guide cylinder, and the other connecting end of the guide cylinder is screwed with the nose tip.

Preferably, the release plunger is inserted into the inner bore of the guide block housing and interconnected by a shear pin.

Preferably, the guide block is extended out of the axial opening groove by the elastic force of the small plate spring and is in a free state.

Preferably, one end of the rod handle of the connecting rod is pressed on a milling plane at one end of the release plunger through a threaded hole and a positioning screw, and the outer sleeve and the connecting rod can rotate relatively.

Preferably, the flat male joint at one end of the lower joint is inserted into the open end of the corresponding female joint of the rotating arm, is connected by the lower joint pin shaft and is firmly riveted, and the rotating arm and the lower joint can rotate relatively; a flat female joint at the other end of the rotating arm is correspondingly inserted with a flat male joint of the connecting rod, and is connected and firmly riveted by a rotating arm pin shaft, and the connecting rod and the rotating arm can rotate relatively; the large plate spring is arranged in a plate spring groove at one side of the rotating arm through two screws.

Preferably, the nut and the guide cylinder are sequentially screwed on the other threaded connecting end of the outer sleeve, and the oval bag-shaped opening of the guide cylinder is adjusted through threaded connection, so that the rotating arm assembly can flexibly rotate to the outside of the bag-shaped opening around the rotating arm pin shaft.

Preferably, the oval bag-type opening is a pocket-shaped opening which is milled on one side of the guide cylinder in the axial direction, has a width close to the diameter of the guide cylinder, and has oval two ends.

Preferably, the upper sleeve is symmetrically matched with the upper set screw at the threaded connection part of the guide cylinder, and the upper joint is symmetrically matched with the upper set screw at the threaded connection part of the outer guide cylinder, so that the threaded connection is prevented from loosening.

The working principle is as follows: the utility model discloses steel wire operation instrument is connected to bag-type whipstock's upper end (top connection), and the first or the input instrument of salvaging is connected to the lower clutch lower extreme, in the underground preset working barrel through the steel wire. The guide block deflects to one side and can be contacted with the pipe wall of the preset working barrel, so that the deflecting function is realized, and the whole deflecting device deflects to one side under the action of the plate spring; the connecting rod, the rotating arm and the lower joint in the whipstock are connected through the rotating pin shaft, so that the rotating arm and the lower joint assembly can jump out of the oval bag-type opening on the side surface of the guide cylinder, and the fishing head or the throwing tool connected to the lower end of the lower joint is in butt joint with the throwing and fishing tool below the whipstock to implement throwing and fishing operation.

Has the advantages that: the utility model can provide a certain distance of eccentricity; the whipstock is suitable for eccentric working barrels with various specifications, and corresponding whipstocks can be used for running and fishing for any eccentric working barrel with any specification; the throwing and fishing risk is small, the operation time is short, and the cost is low; the tool is simple to operate, reliable in deflecting and convenient to use and maintain; the gas lift valve is particularly suitable for being used when a gas lift valve, a gas injection valve and a water distributor are thrown or salvaged in an underground eccentric working barrel.

Drawings

Fig. 1 is a schematic front cross-sectional view of a bag whipstock of the present invention;

fig. 2 is a schematic top view of the bag whipstock of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, a bag whipstock comprises an upper joint 1, an outer sleeve 2, a guide block cover 3, a guide block 4, a release plunger 11, a connecting rod 15, a rotating arm assembly, a guide cylinder 25, a lower joint 23 and a nose tip 26, wherein the guide block 4 is connected with a small plate spring 5 through a pair of screws 7 and is placed in an opening of the guide block cover 3, a gasket 6 is padded between the screws 7 and the small plate spring 5, the guide block 4 and the guide block cover 3 are connected through a small pin shaft 8, two ends of the small pin shaft 8 are firmly riveted, and the guide block 4 can rotate relatively through the small pin shaft 8; the release plunger 11 is inserted into the inner hole of the guide block cover 3; a large spring 10 is sleeved on the outer cylinder of the release plunger 11; the guide block housing 3 and the release plunger 11 are mounted in the inner bore of the outer sleeve 2 and are free to move, said guide block 4 facing an axially open groove 201 on the outer cylinder of the outer sleeve 2; an internal thread at one end of the outer sleeve 2 close to the axial open slot 201 is connected and tightened with an external thread of the upper joint 1; the connecting rod 15 is inserted into a slot 202 at the other end of the outer sleeve 2, and one end of a rod handle of the connecting rod 15 is pressed on a milling plane at one end of the release plunger 11; the rotating arm assembly comprises a rotating arm 21, a ball seat 17, a small spring 19 and a spring seat sleeve 22, wherein the ball seat 17, the small spring 19 and the spring seat sleeve 22 are arranged in the rotating arm 21, a steel ball of the spring seat sleeve 22 is sealed and arranged into a steel ball 16, and a steel ball of the connecting rod 15 is sealed and arranged into another steel ball 16 with the same specification; a flat male connector at one end of the lower connector 23 is inserted into the open end of the corresponding female connector of the rotating arm 21, and a flat female connector at the other end of the rotating arm 21 is inserted into the corresponding flat male connector of the connecting rod 15; the nut 12 and the guide cylinder 25 are sequentially screwed on the other threaded connecting end of the outer sleeve 2, an oval bag-shaped opening 251 is formed in one side of the guide cylinder 25, and the other connecting end of the guide cylinder 25 is screwed and tightened with the nose tip 26.

Preferably, the release plungers 11 are inserted into the inner bores of the guide block housings 3 and are connected to one another by shear pins 9.

Preferably, the elastic force of the small plate spring 5 extends the guide block 4 out of the axial opening groove 201, and is in a free state.

Preferably, one end of the shank of the connecting rod 15 is pressed on a milling plane at one end of the release plunger 11 through a threaded hole and a set screw 13, and the outer sleeve 2 and the connecting rod 15 can rotate relatively.

Preferably, a flat male joint at one end of the lower joint 23 is inserted into the open end of the corresponding female joint of the rotating arm 21, and is connected and firmly riveted by a lower joint pin shaft 24, so that the rotating arm 21 and the lower joint 23 can rotate relatively; a flat female joint at the other end of the rotating arm 21 is correspondingly inserted with a flat male joint of the connecting rod 15, and is connected and firmly riveted by a rotating arm pin shaft 14, so that the connecting rod 15 and the rotating arm 21 can relatively rotate; the large leaf spring 20 is mounted in a leaf spring slot on the side of the swivel arm 21 by two screws 18.

Preferably, the nut 12 and the guide tube 25 are screwed on the other threaded end of the outer sleeve 2 in sequence, and the elliptical pocket opening 251 of the guide tube 25 is adjusted through threaded connection, so that the rotating arm assembly can flexibly rotate around the rotating arm pin 14 to the outside of the pocket opening.

Preferably, the elliptical pocket opening 251 is a pocket opening milled axially on one side of the guide tube to a width close to the diameter of the guide tube and having elliptical ends.

Preferably, a set screw 27 is symmetrically matched with the drill at the threaded connection part of the outer sleeve 2 and the guide cylinder 25, and a set screw 28 is symmetrically matched with the drill at the threaded connection part of the upper connector 1 and the outer guide cylinder 2, so that the threaded connection is prevented from loosening.

Although the embodiments of the present invention have been described in the specification, these embodiments are only for the purpose of presentation and should not be construed as limiting the scope of the present invention. Various omissions, substitutions, and changes may be made without departing from the spirit and scope of the invention.

Claims

1. The bag-type whipstock is characterized by comprising an upper joint, an outer sleeve, a guide block cover, a guide block, a release plunger, a connecting rod, a rotating arm assembly, a guide cylinder, a lower joint and a nose tip, wherein the guide block is connected with a small leaf spring through a pair of screws and is placed in an opening of the guide block cover; the release plunger is inserted into an inner hole of the guide block cover; a large spring is sleeved on the outer cylinder of the release plunger; the guide block cover and the release plunger are installed in the inner hole of the outer sleeve and can move freely, and the guide block faces to an axial opening groove on the outer cylinder of the outer sleeve; an internal thread at one end of the outer sleeve close to the axial open slot is connected and tightened with an external thread of the upper joint; the connecting rod is inserted into the groove at the other end of the outer sleeve, and one end of the connecting rod handle is pressed on the milling plane at one end of the release plunger; the rotating arm assembly comprises a rotating arm, a ball seat, a small spring and a spring seat sleeve, wherein the ball seat, the small spring and the spring seat sleeve are arranged in the rotating arm; a flat male joint at one end of the lower joint is inserted into the opening end of the rotating arm corresponding to the female joint, and a flat female joint at the other end of the rotating arm is inserted onto the flat male joint of the connecting rod correspondingly; the nut and the guide cylinder are sequentially screwed on the other threaded connecting end of the outer sleeve, an oval bag-type opening is formed in one side of the guide cylinder, and the other connecting end of the guide cylinder is screwed with the nose tip.

2. The bag whipstock of claim 1 wherein the release plunger is inserted into the bore of the guide block housing and interconnected by shear pins.

3. The pocket whipstock of claim 1 wherein the resilience of the leaf spring extends the guide block out of the axially open slot in a free state.

4. The bag whipstock of claim 1 wherein the end of the connecting rod shank is pressed against the milled surface at the end of the release plunger by a threaded bore and a set screw, the outer sleeve and connecting rod being rotatable relative to each other.

5. The bag whipstock of claim 1, wherein the flat male joint at one end of the lower joint is firmly riveted with the open end of the corresponding female joint of the rotating arm by a lower joint pin shaft, and the rotating arm and the lower joint can rotate relatively; the flat female joint at the other end of the rotating arm is firmly riveted with the flat male joint of the connecting rod through the rotating arm pin shaft, and the connecting rod and the rotating arm can rotate relatively; the large plate spring is arranged in a plate spring groove at one side of the rotating arm through two screws.

6. The bag whipstock of claim 1 wherein the other threaded end of the outer sleeve threadably engages the oval pocket opening of the adjustment guide such that the pivot arm assembly is free to rotate about the pivot arm pin to an exterior of the pocket opening.

7. The bag whipstock of claim 1 wherein set screws are symmetrically drilled on the threaded connection of the outer sleeve and the guide sleeve, and set screws are symmetrically drilled on the threaded connection of the upper fitting and the outer guide sleeve to prevent the threaded connection from loosening.