CN211950401U

CN211950401U - Releasing tool for horizontal well liner completion well entering tool

Info

Publication number: CN211950401U
Application number: CN202022169793.3U
Authority: CN
Inventors: 王修朝; 刘春兴; 成卫海
Original assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-11-17
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a releasing tool for horizontal well bushing pipe well completion well entering instrument relates to releasing tool in the oil gas field exploration and development operation, including top connection and lower clutch, the top connection lower extreme is equipped with the sliding cylinder, the electro-magnet is equipped with to the top connection lower extreme, the spliced pole is equipped with to the lower clutch upper end, the sliding cylinder with the spring is equipped with between the spliced pole, the sliding cylinder with just between the spliced pole the iron ring is equipped with to the spring lower part, the sliding cylinder with between the spliced pole just the steel ball is equipped with to the iron ring lower part, the internal diameter of sliding cylinder is poor with the diameter that is equal to the steel ball of the maximum diameter of the external diameter of spliced pole. The utility model has the advantages of reasonable and compact structure, convenient to use, safe and reliable suppresses through ground and realizes the smooth releasing of well completion pipe cluster to guarantee the effective implementation of borehole operation, avoid the emergence of major downhole accident.

Description

Releasing tool for horizontal well liner completion well entering tool

Technical Field

The utility model relates to a releasing tool in the oil gas field exploration and development operation specifically is a releasing tool that is used for horizontal well liner tube well completion to go into well instrument.

Background

With the continuous development of drilling technology, more and more high-inclination horizontal wells are used. In recent years, the high-inclination horizontal well is mainly used for developing low-permeability fractured formations to cross fractures, and because the high-inclination horizontal section can be penetrated obliquely and horizontally, the production zone is longer, the exposed area of oil gas is greatly increased, and therefore the oil gas yield can be greatly improved. However, high-inclination horizontal wells also present a serious challenge to the deep well complex well completion process. The liner pipe well completion technology has the advantages of protecting an oil-gas layer, preventing stratum collapse, being simple to operate, being low in cost and the like, the liner pipe well completion technology is more and more used for selective well completion of horizontal wells at home and abroad at present, and the liner pipe well completion is one of important well completion modes of the horizontal wells. At present, the system research on the deep well and complex well liner completion technology is not carried out at home and abroad, and the deep well, complex well and highly deviated well liner completion technology has not made a major breakthrough.

In the process of drilling and completing the well, the sending and releasing tool is an indispensable tool for well completion operation, the well completion pipe string is sent into the well through the sending and releasing tool, and then releasing is realized through a mechanical or hydraulic mode, so that the smooth proceeding of subsequent underground construction is ensured. However, most of the currently used sending and releasing tools have difficulty in releasing, so that the completion work cannot be smoothly carried out, and even serious downhole accidents can be caused due to the failure of smooth releasing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a releasing tool that is used for horizontal well liner tube well completion to go into well instrument.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a releasing tool for horizontal well bushing pipe well completion well entering instrument, includes top connection and lower clutch, the top connection lower extreme is equipped with the slide cartridge, the electro-magnet is equipped with to the top connection lower extreme, the spliced pole is equipped with to the lower clutch upper end, the slide cartridge with be equipped with the spring between the spliced pole, the slide cartridge with just between the spliced pole the iron ring is equipped with to the spring lower part, the slide cartridge with between the spliced pole just the steel ball is equipped with to the iron ring lower part, the internal diameter of slide cartridge and the maximum diameter difference of the external diameter of spliced pole are equal to the diameter of steel ball.

Furthermore, a fixed fillet is installed on the sliding cylinder, a connecting groove matched with the fixed fillet for use is installed on the connecting column, and the radius of the fixed fillet and the radius of the connecting groove are equal to the radius of the steel ball.

Further, the upper joint comprises an upper joint outer barrel and an upper joint inner barrel, the upper joint inner barrel is fixed inside the upper joint outer barrel, an annular retaining ring is mounted at the lower end of the upper joint inner barrel, a plurality of splines are arranged on the outer wall of the retaining ring, and a plurality of key grooves matched with the splines are formed in the upper side of the inner wall of the connecting column.

Furthermore, an upper joint connecting thread is arranged on the upper side of the inner wall of the upper joint inner cylinder.

Further, the lower joint comprises a lower joint barrel, and a lower joint connecting barrel is mounted at the lower end of the lower joint barrel.

Further, the outer wall of the lower joint connecting cylinder is provided with lower joint connecting threads.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of reasonable and compact structure, convenient to use, safe and reliable suppresses through ground and realizes the smooth releasing of well completion pipe cluster to guarantee the effective implementation of borehole operation, avoid the emergence of major downhole accident.

Drawings

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

fig. 2 is a schematic structural view of the upper joint of the present invention;

fig. 3 is a schematic structural view of the lower joint of the present invention;

in the figure: the steel ball connecting structure comprises an upper joint outer cylinder 1, an upper joint inner cylinder 2, an upper joint connecting thread 3, a retaining ring 4, a spline 5, a sliding cylinder 6, a fixed fillet 7, a lower joint cylinder 8, a lower joint connecting cylinder 9, a lower joint connecting thread 10, a connecting column 11, a connecting groove 12, an electromagnet 13, a spring 14, an iron ring 15 and a steel ball 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a releasing tool for horizontal well liner completion well entering tool, includes top connection and lower clutch, the top connection lower extreme is equipped with slide cartridge 6, the top connection lower extreme is equipped with electro-magnet 13, the spliced pole 11 is equipped with to the lower clutch upper end, slide cartridge 6 with spring 14 is equipped with between the spliced pole 11, spring 14 is in compression state all the time, slide cartridge 6 with between the spliced pole 11 just iron ring 15 is equipped with to spring 14 lower part, slide cartridge 6 with between the spliced pole 11 just steel ball 16 is equipped with to iron ring 15 lower part, the inside diameter of slide cartridge 6 and the maximum diameter difference of the external diameter of spliced pole 11 equal to the diameter of steel ball 16.

The sliding cylinder 6 is provided with a fixed round angle 7, the connecting column 11 is provided with a connecting groove 12 matched with the fixed round angle 7, and the radius of the fixed round angle 7 and the radius of the connecting groove 12 are equal to the radius of the steel ball 16. The electric wire of the electromagnet 13 penetrates out of the upper connector inner barrel 2, and the power supply to the electromagnet 13 is realized.

Referring to fig. 2, the upper joint comprises an upper joint outer cylinder 1 and an upper joint inner cylinder 2, the upper joint inner cylinder 2 is fixed inside the upper joint outer cylinder 1, an annular retaining ring 4 is mounted at the lower end of the upper joint inner cylinder 2, a plurality of splines 5 are arranged on the outer wall of the retaining ring 4, and a plurality of key grooves matched with the splines 5 are formed in the upper side of the inner wall of the connecting column 11. The sum of the lengths of the upper joint inner barrel 2 and the sliding barrel 6 is equal to the length of the upper joint outer barrel 1. The length of the connecting column 11 is equal to that of the sliding cylinder 6, and a sealing ring is arranged at the upper end of the connecting column 11. And an upper joint connecting thread 3 is arranged on the upper side of the inner wall of the upper joint inner cylinder 2.

Referring to fig. 3, the lower joint comprises a lower joint cylinder 8, and a lower joint connection cylinder 9 is mounted at the lower end of the lower joint cylinder 8. The outer wall of the lower joint connecting cylinder 9 is provided with a lower joint connecting thread 10.

The upper end of the upper joint is connected with an oil pipe or a drill rod through an upper joint connecting thread 3, the lower end of the lower joint is connected with a well completion pipe string through a lower joint connecting thread 10, and the pipe string can rotate during the drilling process through the matching of a spline 5 on the upper joint and a key groove; secondly, the well completion pipe string is sent to a preset position, power is supplied through the electromagnet 13, the electromagnet 13 sucks the iron ring 15 through magnetic force, the iron ring 15 is enabled to move close to the electromagnet 13, the spring 14 is further compressed, the steel balls 16 are not bound by the iron ring 15, then the connecting column 11 is separated from the sliding cylinder 6 through the action of gravity of the lower connector and the well pipe string below through pulling the upper connector upwards, and the upper connector and the lower connector are separated; and finally, continuously lifting the upper joint, lifting the upper joint out, and enabling the lower joint and the lower tubular column to fall down to realize successful releasing.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A releasing tool for a horizontal well liner completion well entering tool is characterized in that: including top connection and lower clutch, the top connection lower extreme is equipped with slide cartridge (6), electromagnet (13) are equipped with to the top connection lower extreme, lower clutch upper end is equipped with spliced pole (11), slide cartridge (6) with spring (14) are equipped with between spliced pole (11), slide cartridge (6) with between spliced pole (11) and spring (14) lower part is equipped with hoop (15), slide cartridge (6) with between spliced pole (11) and hoop (15) lower part is equipped with steel ball (16), the inside diameter of slide cartridge (6) and the diameter of the biggest of the external diameter of spliced pole (11) are poor to be equal to the diameter of steel ball (16).

2. The release tool for a horizontal well liner completion running tool of claim 1, wherein: the fixed round angle (7) is installed on the sliding cylinder (6), the connecting groove (12) matched with the fixed round angle (7) is installed on the connecting column (11), and the radius of the fixed round angle (7) and the radius of the connecting groove (12) are equal to the radius of the steel ball (16).

3. The release tool for a horizontal well liner completion running tool of claim 1, wherein: the upper joint comprises an upper joint outer barrel (1) and an upper joint inner barrel (2), the upper joint inner barrel (2) is fixed inside the upper joint outer barrel (1), an annular retaining ring (4) is mounted at the lower end of the upper joint inner barrel (2), a plurality of splines (5) are arranged on the outer wall of the retaining ring (4), and a plurality of key grooves matched with the splines (5) are formed in the upper side of the inner wall of the connecting column (11).

4. The release tool for a horizontal well liner completion running tool of claim 3, wherein: and an upper joint connecting thread (3) is arranged on the upper side of the inner wall of the upper joint inner cylinder (2).

5. The release tool for a horizontal well liner completion running tool of claim 1, wherein: the lower joint comprises a lower joint cylinder body (8), and a lower joint connecting cylinder (9) is installed at the lower end of the lower joint cylinder body (8).

6. The release tool for a horizontal well liner completion running tool of claim 5, wherein: and the outer wall of the lower joint connecting cylinder (9) is provided with a lower joint connecting thread (10).