CN2809193Y

CN2809193Y - Centralizer for sucker rod

Info

Publication number: CN2809193Y
Application number: CN 200520028872
Authority: CN
Inventors: 刘万新
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-06
Filing date: 2005-07-06
Publication date: 2006-08-23
Anticipated expiration: 2015-07-06

Abstract

The utility model provides a centralizer for an oil producing well rod, which is composed of a body of the centralizer and a body of a well rod, wherein the body of the centralizer is a sleeve barrel with a tubular structure, both ends are arc-shaped end surfaces, a plurality of supporting ribs are uniformly distributed on the external surface of the centralizer along an axial direction, the body of the well rod is a column structure and is inlaid in an internal cavity of the centralizer, a ring groove is arranged on the internal wall of the body of the centralizer, a positioning ring is inlaid in the ring groove which forms tight fit connection with the body of the well rod. The supporting rids which are distributed on the surface of the body of the centralizer has a supporting function and a centralizing function for the well rod, the direct wear of a well pipe, a coupling clamp and the wall of the well pipe is avoided, the utility model effectively protect an oil conduit, the service life of the oil conduit is extended, the positioning ring further enhances the connecting strength of the body of the centralizer and the body of the well rod, using times are increased, the oil production efficiency is accordingly improved and the cost of workover is reduced.

Description

Producing well bar centralizer

Technical field:

The utility model provides a kind of producing well bar centralizer, is the architecture advances to existing producing well bar centralizer, belongs to oil recovery machiner component technical field.

Background technology:

Existing producing well bar centralizer is the tubular single layer structure, is made by rubber, and its shear strength and hot strength are lower in actual use, and application life is shorter, frequently changes centralizer and makes troubles not only for the production of recovering the oil, and has also influenced oil recovery efficiency.

Summary of the invention:

The utility model provides a kind of producing well bar centralizer, is sandwich structure, has strengthened the intensity of barrel oil pump body, has improved application life.

Technical solution of the present utility model is as follows: be made of centralizer body and well bar body, wherein, centralizer body is the sleeve of tubular structure, two ends are curved end, the external surface of centralizer is evenly distributed with some brace rods vertically, and well bar body is that column structure is embedded in the centralizer inner chamber;

The inwall of centralizer body also is provided with annular groove, is inlaid with locating ring in the annular groove, constitutes with well bar body to be closely connected.

Good effect of the present utility model is: the brace rod of centralizer body surface distributed plays the support centralizing function to the well bar; and the direct wearing and tearing of well casing, box cupling and well tubular wall have been exempted from; protected oil pipe effectively; prolonged the application life of oil pipe; locating ring has further strengthened the bonding strength of centralizer body and well bar body; increase access times, correspondingly improved oil recovery efficiency, reduced the workover expense.

Description of drawings:

Fig. 1 is the utility model structure principle chart.

Fig. 2 is the centralizer body structure principle chart.

The specific embodiment:

According to Fig. 1, the utility model is made of centralizer body 1 and well bar body 4, wherein, the centralizer body 1 of tubular is made for plastic material, two ends are curved end, the external surface of centralizer body 1 is evenly distributed with 4 brace rods 3 vertically, and well bar body 1 is embedded in the inner chamber of centralizer body 1 for column structure.

According to Fig. 2, the utility model can also be provided with annular groove on the inwall of centralizer body 1, be inlaid with locating ring 2 in the annular groove, constitutes with well bar body 4 to be closely connected.

Claims

1, a kind of producing well bar centralizer, it is characterized in that: constitute by centralizer body and well bar body, wherein, centralizer body is the sleeve of tubular structure, two ends are curved end, the external surface of centralizer is evenly distributed with some brace rods vertically, and well bar body is that column structure is embedded in the centralizer inner chamber.

2, centralizer according to claim 1 is characterized in that: the inwall of centralizer body also is provided with annular groove, is inlaid with locating ring in the annular groove.