CN209924932U

CN209924932U - Combined type supporting righting ring for well fixing and completing tool

Info

Publication number: CN209924932U
Application number: CN201920634149.3U
Authority: CN
Inventors: 董赵朋; 梁志平; 朱泽鑫; 杜磊; 陶荣辉; 尹璇; 丁宝亮; 陈永衡; 霍磊磊; 殷昌盛; 秦文彬; 贺强
Original assignee: CNPC Bohai Drilling Engineering Co Ltd
Current assignee: China National Petroleum Corp; CNPC Bohai Drilling Engineering Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-01-10
Anticipated expiration: 2029-05-06

Abstract

The utility model relates to a supporting ring of righting of modular solid well completion instrument, including inner ring and outer loop, the inner ring is C type ring structure, inner ring surface one end is equipped with the external screw thread, inner ring surface other end annular is equipped with the boss, the boss external diameter is greater than the external screw thread external diameter, the outer loop is annular structure, and the internal surface of outer loop is equipped with the internal thread, the internal thread is supporting with the external screw thread of inner ring, and outer loop one end is spacing by the boss after inner ring and outer loop supporting fixed, the surface symmetry of outer loop is equipped with a plurality of and rights the arris; and a convex clamping platform is annularly arranged in the inner ring. The utility model discloses it is spacing firm, convenient to detach again.

Description

Combined type supporting righting ring for well fixing and completing tool

Technical Field

The utility model belongs to the technical field of oil gas well cementation, especially, relate to a supporting ring of rightting of modular well cementation and completion instrument.

Background

After drilling of the oil and gas well is completed each time, a casing needs to be put in for well cementation operation. With the increase of deep wells and ultra-deep wells, the problem of well cementation quality is more and more.

In many well cementing and completion tools used in oil fields, in order to ensure the centering degree of the tool and protect a core element, two ends of the core element are provided with centering rings, a plurality of straight edge centering rings are generally adopted, and a jackscrew or a welding part is used for welding the centering rings on a tool body. However, the fixation with the jackscrew is not firm, and the centralizing ring moves axially if the friction is too large during the process of putting the tool into the well. And the welding on the body is firm, but is inconvenient to disassemble.

Therefore, based on the problems, the supporting righting ring of the combined type well cementation and completion tool which is firm in limiting and convenient to disassemble is provided, and the supporting righting ring has important practical significance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, and provides a supporting righting ring of a combined type well fixing and completing tool which is reliable in limiting and convenient to disassemble.

The utility model provides a its technical problem take following technical scheme to realize:

a combined type supporting righting ring for a well fixing and completing tool comprises an inner ring and an outer ring, wherein the inner ring is of a C-shaped ring structure, the inner ring is made of elastic materials, an external thread is arranged at one end of the outer surface of the inner ring, a boss is annularly arranged at the other end of the outer surface of the inner ring, the outer diameter of the boss is larger than that of the external thread, the outer ring is of an annular structure, an internal thread is arranged on the inner surface of the outer ring, the internal thread is matched with the external thread of the inner ring, one end of the outer ring is limited by the boss after the inner ring and the outer ring are matched and fixed, and a;

and a convex clamping platform is annularly arranged in the inner ring.

Further, the external thread and the internal thread are both straight threads.

Further, the inner surface of the inner ring is a rough surface.

Further, the inner surface of the inner ring may be a raised fine bite, a corrugated or a granular surface.

The utility model has the advantages that:

1. the utility model has the advantages that the inner ring and the outer ring are combined, the disassembly and the assembly are convenient, the inner ring is of a C-shaped ring structure, the clamping table is arranged in the inner ring, and the inner ring is in clearance fit with the groove on the well fixing and completing tool body during the installation, so that the axial movement can be limited, and the axial limit is reliable;

2. the utility model discloses an inner ring internal surface is the mat surface, can be bellied fine calorie of tooth, ripple or particle surface, can make better and solid well completion instrument body of interior spacing ring match fixedly.

Drawings

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an inner ring of a centralizing ring matched with a combined well cementing and completion tool provided by an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural diagram of an outer ring of a centralizing ring matched with a combined type well cementing and completion tool provided by the embodiment of the invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 5 is a schematic view of the assembly of the inner ring, the outer ring and the well cementing and completion tool body according to the embodiment of the present invention.

In the figure:

1. inner ring 2, outer ring 3, external screw thread

4. Boss 5, internal thread 6, right arris

7. Card table

Detailed Description

First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 to 5.

Example 1

Fig. 1 is a schematic structural diagram of an inner ring of a centralizing ring matched with a combined well cementing and completion tool provided by an embodiment of the present invention; FIG. 2 is a sectional view taken along line A-A of FIG. 1; fig. 3 is a schematic structural diagram of an outer ring of a centralizing ring matched with a combined type well cementing and completion tool provided by the embodiment of the invention; FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3; fig. 5 is a schematic view of the assembly of the inner ring, the outer ring and the well cementing and completion tool body according to the embodiment of the present invention. As shown in fig. 1 to 5, the combined type supporting centralizing ring for a well cementing and completion tool provided in this embodiment includes an inner ring 1 and an outer ring 2, where the inner ring 1 is a C-shaped ring structure, one end of the outer surface of the inner ring 1 is provided with an external thread 3, the other end of the outer surface of the inner ring 1 is annularly provided with a boss 4, the outer diameter of the boss 4 is larger than the outer diameter of the external thread 3, the outer ring 2 is an annular structure, the inner surface of the outer ring 2 is provided with an internal thread 5, the internal thread 5 is matched with the external thread 3 of the inner ring 1, and after the inner ring 1 is matched and fixed with the outer ring 2, one end of the outer ring 2 is limited by the boss 4, the outer surface of the outer ring 2 is symmetrically provided with a plurality of centralizing ribs 6;

the inner ring 1 is internally and annularly provided with a convex clamping table 7 which is in clearance fit with a groove on the solid well completion tool body during installation and can limit the axial movement of the solid well completion tool body.

The external thread 3 and the internal thread 5 are both straight threads.

To increase the friction between the inner ring 1 and the completion tool body, it is considered that: the inner surface of the inner limiting ring 1 can be a raised fine clamping tooth, a corrugated surface or a granular surface.

In addition, in order to facilitate the C-shaped inner ring to move and adjust the position on the completion tool body, it is considered that the inner ring is made of a material with certain elasticity, such as spring steel 65 Mn.

In the field use process, the inner ring is firstly sleeved on the well fixing and completing tool body, the clamping table of the inner ring is clamped at the groove on the tool body, then the outer ring is sleeved on the inner ring, the threads between the inner ring and the outer ring are screwed, the inner ring and the outer ring form a whole, and the combined type centralizing ring can rotate but cannot axially move and is convenient to mount and dismount.

The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a supporting ring of rightting of modular well cementation and completion instrument which characterized in that: the inner ring is of a C-shaped ring structure, the inner ring is made of elastic materials, an external thread is arranged at one end of the outer surface of the inner ring, a boss is annularly arranged at the other end of the outer surface of the inner ring, the outer diameter of the boss is larger than the outer diameter of the external thread, the outer ring is of an annular structure, an internal thread is arranged on the inner surface of the outer ring, the internal thread is matched with the external thread of the inner ring, one end of the outer ring is limited by the boss after the inner ring and the outer ring are matched and fixed, and a plurality of righting edges are symmetrically arranged on the outer;

and a convex clamping platform is annularly arranged in the inner ring.

2. The combined type well cementing and completion tool matched centralizing ring of claim 1, which is characterized in that: the external thread and the internal thread are straight threads.

3. The combined well cementing and completion tool matching centralizing ring according to claim 1 or 2, characterized in that: the inner surface of the inner ring is a rough surface.

4. The combined type well cementing and completion tool matched centralizing ring according to claim 3, characterized in that: the inner surface of the inner ring may be a raised fine bite, a corrugated or a granular surface.