CN215369779U

CN215369779U - Setting blanking plug

Info

Publication number: CN215369779U
Application number: CN202120861290.4U
Authority: CN
Inventors: 丁德吉; 石张泽; ***; 秦立民; 李楠; 褚英杰; 赵仲浩; 张成富
Original assignee: China National Offshore Oil Corp CNOOC; CNOOC Energy Technology and Services Ltd
Current assignee: China National Offshore Oil Corp CNOOC; CNOOC Energy Technology and Services Ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-12-31
Anticipated expiration: 2031-04-25

Abstract

The utility model provides a setting blanking plug.A tail end inner wall of an outer layer of a fishing assembly is in threaded connection with a head end outer wall of a sealing cylinder, the upper part of a body is sleeved in the sealing cylinder, body through holes penetrating through the side wall of the body are uniformly formed in the side wall of the body, the tail end outer wall of the body is in threaded connection with the head end inner wall of a lower connector, a body boss is formed on the lower outer wall of the body, a lower connector boss is formed at the head end of the lower connector, an UT disc is arranged on the outer wall of the body between the body boss and the lower connector boss, the UT disc is in interference fit with the body, and the UT disc is fixed on the outer wall of the body through a pressing cap. The sealing design of the UT disc in the setting blanking plug can solve the problem that an O-shaped ring is damaged and falls off, the cost of oil field development is reduced, and the UT disc sealing device has the effects of simplicity in operation and convenience in use.

Description

Setting blanking plug

Technical Field

The utility model relates to the technical field of oilfield oil extraction matching tools, in particular to a setting plug.

Background

At present, the setting of the cable passing packer in the offshore oil field needs to be realized by putting a blanking plug in advance through steel wire operation, positioning and sealing of the blanking plug and a downhole working barrel are realized, and then the setting of the cable passing packer is realized through pressing in an oil pipe.

The sealing mode of the existing setting packer adopts the mode of an O-shaped ring, but the O-shaped ring is found to have the risks of damage and falling in practical application, so that the cable packer cannot be set, and the O-shaped ring falling off simultaneously can enter a wellhead choke nipple along with produced well fluid to cause the blockage of the choke nipple, influence the normal production of an oil well and need to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects in the prior art, the sealing mode of the existing setting plug adopts an O-shaped ring mode, and the risk of damage and falling of the O-shaped ring is found in practical application to cause the incapability of setting the cable packer, so that the setting plug has the advantages of simple and convenient structural design, strong safety and reliability, simplicity and easiness in operation and the like.

The purpose of the utility model is realized by the following technical scheme.

A setting blanking plug comprises a fishing assembly, a balance rod, a spring seat, a sealing barrel, a body, a UT disc, a pressing cap and a lower connector, wherein the fishing assembly is of a double-layer structure, the tail end inner wall of the outer layer of the fishing assembly is in threaded connection with the head end outer wall of the sealing barrel, the upper portion of the body is sleeved in the sealing barrel, body through holes penetrating through the side wall of the body are uniformly formed in the side wall of the body, the tail end outer wall of the body is in threaded connection with the head end inner wall of the lower connector, a body boss is formed on the lower portion outer wall of the body, a lower connector boss is formed at the head end of the lower connector, the UT disc is arranged on the outer wall of the body between the body boss and the lower connector boss, the UT disc is in interference fit with the body, and the UT disc is fixed on the outer wall of the body through the pressing cap;

the inner-layer tail end inner wall of the fishing assembly is in threaded connection with the head end outer wall of the balance rod, balance rod through holes penetrating through the side wall of the balance rod are uniformly formed in the side wall of the balance rod, an expanding section is formed in the head end inner wall of the body, the inner wall of the expanding section is connected with the outer wall of the spring seat through threads, a space is formed between the inner wall of the spring seat and the outer wall of the balance rod, a spring is installed in the space, and the lower portion of the balance rod is limited in the body through the spring.

The fishing assembly comprises an outer fishing head and an inner fishing head, the outer wall of the inner fishing head is in threaded connection with the inner wall of the outer fishing head, the tail end inner wall of the outer fishing head is in threaded connection with the head end outer wall of the sealing barrel, and the tail end inner wall of the inner fishing head is in threaded connection with the head end outer wall of the balance rod.

The head end of the outer fishing head is connected with the outer fishing tool of the steel wire.

The head end of the inner fishing head is connected with the inner fishing tool of the steel wire.

And the inner wall of the tail end of the lower joint is provided with an internal thread.

The utility model has the beneficial effects that: the sealing design of the UT disc in the setting blanking plug can solve the problem that an O-shaped ring is damaged and falls off, the cost of oil field development is reduced, and the UT disc sealing device has the effects of simplicity in operation and convenience in use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1 is outer fishing head, 2 is interior fishing head, 3 is the balancing pole, 4 is the spring holder, 5 is the spring, 6 is a sealed section of thick bamboo, 7 is the body, 8 is UT dish, 9 is the pressure cap, 10 is the lower clutch.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples.

Example one

A setting blanking plug comprises a fishing assembly, a balance rod 3, a spring seat 4, a sealing barrel 6, a body 7, a UT disc 8, a pressing cap 9 and a lower connector 10, wherein the fishing assembly is of a double-layer structure, the outer layer tail end inner wall of the fishing assembly is in threaded connection with the head end outer wall of the sealing barrel 6, the upper part of the body 7 is sleeved in the sealing barrel 6, body through holes penetrating through the side wall of the body 7 are uniformly formed in the side wall of the body 7, the tail end outer wall of the body 7 is in threaded connection with the head end inner wall of the lower connector 10, a body boss is formed on the lower part outer wall of the body 7, a lower connector boss is formed at the head end of the lower connector 10, the UT disc 8 is arranged on the outer wall of the body between the body boss and the lower connector boss, the UT disc 8 is in interference fit with the body 7, and the UT disc 8 is fixed on the outer wall of the body 7 through the pressing cap 9;

the inner layer tail end inner wall of the salvaging assembly is in threaded connection with the head end outer wall of the balance rod 3, balance rod through holes penetrating through the side wall of the balance rod 3 are uniformly formed in the side wall of the balance rod 3, an expanding section is formed in the head end inner wall of the body 7, the inner wall of the expanding section is connected with the outer wall of the spring seat 4 through threads, a space is formed between the inner wall of the spring seat 4 and the outer wall of the balance rod 3, the spring 5 is installed in the space, and the lower portion of the balance rod 3 is limited in the body 7 through the spring 5.

The sealing principle of the setting blanking plug is as follows: body 7, UT dish 8, press the cooperation between cap 9 and the lower clutch 10, UT dish 8 is installed on the outer wall of body 7 through interference fit's mode, rethread press cap 9 is fixed in UT dish 8 on the outer wall of body 7, with realize UT dish 8 spacing in the central axis vertical direction of body 7, and then prevent UT dish 8 in the operation in-process of going into the pit, the damage that causes is salient or drops on the outer wall of body 7, at last through the threaded connection between lower clutch 10 and the body 7, with realize UT dish 8 spacing in the central axis direction of body 7.

Example two

On the basis of embodiment one, salvage the subassembly and include outer fishing head 1 and interior fishing head 2, the outer wall of interior fishing head 2 and the inner wall threaded connection of outer fishing head 1, the tail end inner wall of outer fishing head 1 and the head end outer wall threaded connection of a sealed section of thick bamboo 6, the head end outer wall threaded connection of inner fishing head 2 tail end inner wall and balancing pole 3.

The head end of the outer fishing head 1 is connected with the outer fishing tool of the steel wire.

The head end of the inner fishing head 2 is connected with the inner fishing tool of the steel wire.

EXAMPLE III

On the basis of the second embodiment, the inner wall of the tail end of the lower joint 10 is provided with an internal thread.

The setting blanking plug can be separated from the working barrel in an external fishing operation mode and an internal fishing operation mode.

The principle of external fishing operation:

the following process: connecting an outer fishing tool of the steel wire with an outer fishing head, putting the setting plug into the working barrel, and then shocking downwards through the steel wire to realize the releasing of the setting plug from the outer fishing tool;

fishing: go into the stopper department of setting through the steel wire with the outer fishing tool of steel wire down to set up the stopper and grasp, the rethread jarring that makes progress to realize sealed section of thick bamboo and the upward movement of fishing head simultaneously outward, offer this moment and expose in the body through-hole self sealss section of thick bamboo on the body lateral wall, make the upper portion pressure and the lower part pressure of setting the stopper unanimously, the jar that makes progress again breaks away from in the setting stopper follow working barrel, thereby realize external fishing.

The internal fishing operation principle is as follows:

the following process: connecting a steel wire inner fishing tool with an inner fishing head, putting the setting plug into the working barrel, and then shocking downwards through a steel wire to realize the release of the setting plug from the inner fishing tool;

fishing: go into down to sit through the steel wire fishing tool in with the steel wire and seal blanking plug department to sit and seal the blanking plug and grasp, the rethread upward jarring, in order to realize spring holder and balancing pole simultaneous rebound, the balancing pole through-hole of seting up on the balancing pole lateral wall exposes from the spring seat this moment, makes the upper portion pressure and the lower part pressure unanimous of sitting and sealing the blanking plug, upwards jarring again, sits and seals the blanking plug and break away from in following the working barrel, thereby salvage in the realization.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A setting blanking plug is characterized in that: the fishing assembly is of a double-layer structure, the tail end inner wall of the outer layer of the fishing assembly is in threaded connection with the head end outer wall of the sealing barrel, the upper portion of the body is sleeved in the sealing barrel, body through holes penetrating through the side wall of the body are uniformly formed in the side wall of the body, the tail end outer wall of the body is in threaded connection with the head end inner wall of the lower connector, a body boss is formed on the lower outer wall of the body, a lower connector boss is formed at the head end of the lower connector, the UT disc is arranged on the outer wall between the body boss and the lower connector boss, the UT disc is in interference fit with the body, and the UT disc is fixed on the outer wall of the body through the pressing cap;

the inner-layer tail end inner wall of the fishing assembly is in threaded connection with the head end outer wall of the balance rod, balance rod through holes penetrating through the balance rod are uniformly formed in the side wall of the balance rod, an expanding section is formed in the head end inner wall of the body, the inner wall of the expanding section is connected with the outer wall of the spring seat through threads, a space is formed between the inner wall of the spring seat and the outer wall of the balance rod, a spring is installed in the space, and the lower portion of the balance rod is limited in the body through the spring.

2. A setting obturator according to claim 1, characterised in that: the fishing assembly comprises an outer fishing head and an inner fishing head, the outer wall of the inner fishing head is in threaded connection with the inner wall of the outer fishing head, the tail end inner wall of the outer fishing head is in threaded connection with the head end outer wall of the sealing barrel, and the tail end inner wall of the inner fishing head is in threaded connection with the head end outer wall of the balance rod.

3. A setting obturator according to claim 2, characterised in that: the head end of the outer fishing head is connected with the outer steel wire fishing tool; the head end of the inner fishing head is connected with the inner fishing tool of the steel wire.

4. A setting obturator according to claim 1, characterised in that: and the inner wall of the tail end of the lower joint is provided with an internal thread.