CN214303746U

CN214303746U - Bearing circulation anchor

Info

Publication number: CN214303746U
Application number: CN202120218599.1U
Authority: CN
Inventors: 王侃; 张庆豫; 郑殿富; 李玉海; 王春华; 万发明; 郑瑞强; 于小波; 李秋杰; 唐纯鹏; 孙国徽; 李龙涛; 解珅
Original assignee: Daqing Petroleum Administration Bureau; China National Petroleum Corp
Current assignee: Daqing Petroleum Administration Bureau; China National Petroleum Corp
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-09-28
Anticipated expiration: 2031-01-26

Abstract

The utility model relates to a bearing circulation anchor. The problem of side drilling failure caused by the fact that a drill bit cannot be effectively supported in the deep well open hole side drilling process is mainly solved. The method is characterized in that: the upper end and the lower end of the main body (2) are connected with the upper joint (1) and the lower joint (9) through threads; the upper part of the main body (2) is provided with a circulating hole (11), and the lower part of the circulating hole (11) is provided with a sliding chute (12); a positioning sleeve (6) is sleeved outside the sliding groove (12) of the main body; the main body (2) is connected with the opening sleeve (3) through a shearing pin (5), and an opening plug seat (4) is connected in the opening sleeve (3); the positioning sleeve (6) is fixedly connected with the main body (2) through a clamp spring (10), and the protective sleeve (7) and the anchoring mechanism (8) are further sleeved outside the main body. This bearing circulation anchor can anchor the bore hole sidetracking pipe cluster, avoids beating the process of cement stopper as artifical shaft bottom, establishes the circulation passage when providing effective support to the pipe cluster in the pit.

Description

Bearing circulation anchor

Technical Field

The utility model relates to an oil field drilling engineering technical field, in particular to bearing circulation anchor.

Background

Open hole sidetracking is an effective and important means for increasing production and saving energy of old wells, low-yield wells, dry wells and exhausted wells, eliminating underground accidents as soon as possible in the process of digging potential of old wells and drilling wells and saving exploration cost. For the open hole sidetrack drilling of a deep well, if the traditional cement injection plug and screw sidetrack drilling technology is adopted, the strength of the cement plug is far lower than the stratum strength, and the drill bit cannot be supported enough to drill the cement plug, so that the sidetrack drilling fails. Aiming at the problems of the existing deep-layer open hole sidetrack drilling, a set of open hole sidetrack drilling tool meeting the deep-layer open hole windowing is developed.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome the deep well bore hole sidetracking in-process drill bit that exists among the background art and can not obtain the problem that effective support leads to the sidetracking failure, and provide a bearing circulation anchor, this bearing circulation anchor can anchor the bore hole sidetracking pipe cluster, avoids taking the cement plug as the process in artifical shaft bottom, establishes circulation channel when providing effective support to the pipe cluster in the pit.

The utility model provides a its problem accessible reach as follows technical scheme: the bearing circulation anchor comprises a main body, wherein the upper end and the lower end of the main body are connected with an upper joint and a lower joint in a threaded manner; the upper part of the main body is provided with a plurality of circulating holes, and a plurality of sliding chutes are arranged between adjacent circulating holes; a positioning sleeve is sleeved outside the chute of the main body; the main body is connected with an opening sleeve through a shearing pin, and an opening plug seat is connected in the opening sleeve; the positioning sleeve is fixedly connected with the main body through a clamp spring, and a protective sleeve and an anchoring mechanism are further sleeved outside the main body.

Compared with the above background art, the utility model can have following beneficial effect: the bearing circulation anchor can provide effective support for the underground pipe string and meanwhile establish a circulation channel, can anchor the open hole sidetracking tool and the lower pipe string on the well wall, avoids the process of once cementing plug, is used as the open hole sidetracking tool for opening the window by the open hole, and can save the construction period for 4-6 days.

Drawings

FIG. 1 is a front view cross-sectional view of the present invention;

FIG. 2 is a rear sectional view of the present invention;

fig. 3 is a schematic diagram of the structure of the utility model after anchoring.

In the figure: 1. an upper joint; 2. a main body; 3. opening the sleeve; 4. opening the plug seat; 5. shearing the pin; 6. a positioning sleeve; 7. a protective sleeve; 8. an anchoring mechanism; 9. a lower joint; 10, clamping springs; 11 circulation holes; 12, a chute; 13 sliding pin.

The specific implementation mode is as follows:

the invention will be further explained with reference to the drawings:

as shown in the attached figures 1 and 2, the supporting circulation anchor comprises an upper joint 1, a main body 2 and a lower joint 9, wherein the upper end and the lower end of the main body 2 are connected with the upper joint 1 and the lower joint 9 in a threaded manner, the upper part of the main body 2 is provided with 3

circulation holes

11, and 3 sliding grooves 12 are formed between the adjacent circulation holes 11; the positioning sleeve 6 is sleeved outside the sliding groove 12 of the main body 2, and the main body 2 is connected with the positioning sleeve 6 outside the sliding groove 12 through a sliding pin 13; the main body 2 is connected with the opening sleeve 3 through a shearing pin 5, and the opening sleeve 3 is internally connected with an opening plug seat 4 through a screw thread; the opening sleeve 3 and the positioning sleeve 6 generate relative movement through a sliding pin 13, the positioning sleeve 6 is fixedly connected with the main body 2 through a clamp spring 10, and the protective sleeve 7 and the anchoring mechanism 8 are sleeved outside the main body 2; two ends of the anchoring mechanism 8 are provided with protective sleeves 7; the protective sleeve 7 at the lower end of the anchoring mechanism 8 is abutted against the top of the lower joint 9; the protective sheath 7 is vulcanized in one piece with the anchoring means 8 by means of rubber.

When the bearing circulation anchor is assembled: connect through the screw thread by top connection 1, main part 2, lower clutch 9, open the stopper seat 4 and fix in opening cover 3 through the mode that the screw thread is connected, open cover 3 and fix with main part 2 through shear pin 5, open cover 3 and produce relative motion through sliding pin 13 and position sleeve 6, position sleeve 6 is fixed with main part 2 through jump ring 10, protective sheath 7 and anchoring mechanism 8 become integrative through the rubber vulcanization before the installation.

As shown in fig. 2 and 3, the supporting circulation anchor works as follows: connecting the bearing circulating anchor at the bottommost part of a pipe string of an open hole sidetracking tool, slowly starting a pump to suppress pressure after the pipe string is lowered to a preset position, opening a plug seat 4 at the moment, descending under hydraulic acting force, driving an opening sleeve 3 to descend and cutting a shearing pin 5, simultaneously opening a sliding pin 13 of the sleeve 3 in the back direction, sliding a steel nail in a sliding groove 12, driving a positioning sleeve 6 to descend in the sliding groove 12 to enable an anchoring mechanism 8 to expand and seal! Finally, the circulation channel 11 on the main body 2 is opened, so that the next operation can be performed circularly.

Claims

1. A cyclic anchor of the bearing type comprising a main body (2) characterized in that: the upper end and the lower end of the main body (2) are connected with the upper joint (1) and the lower joint (9) through threads; a plurality of circulating holes (11) are formed in the upper part of the main body (2), and a plurality of sliding grooves (12) are formed between every two adjacent circulating holes (11); a positioning sleeve (6) is sleeved outside the sliding groove (12) of the main body; the main body (2) is connected with the opening sleeve (3) through a shearing pin (5), and an opening plug seat (4) is connected in the opening sleeve (3); the positioning sleeve (6) is fixedly connected with the main body (2) through a clamp spring (10), and the protective sleeve (7) and the anchoring mechanism (8) are further sleeved outside the main body.

2. The cyclic anchor of claim 1, wherein: the main body (2) is connected with a positioning sleeve (6) outside the sliding chute (12) through a sliding pin (13).

3. The cyclic anchor of claim 1, wherein: two ends of the anchoring mechanism (8) are provided with protective sleeves (7); the protective sleeve (7) at the lower end of the anchoring mechanism (8) is propped against the top of the lower joint (9).

4. The cyclic anchor of claim 3, wherein: the protective sleeve (7) and the anchoring mechanism (8) are vulcanized into a whole through rubber.

5. The cyclic anchor of claim 1, wherein: the upper part of the main body (2) is provided with 3 circulating holes (11), and 3 sliding chutes (12) are arranged between the adjacent circulating holes (11).

6. The cyclic anchor of claim 1, wherein: the opening sleeve (3) and the positioning sleeve (6) generate relative movement through a sliding pin (13).