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Stepless angle adjusting device for rotation of tubular column

An angle adjustment device and pipe string technology, which is applied in the direction of drill pipe, casing, drilling equipment, etc., can solve the problems of complex operation, inability to achieve accurate alignment, heavy workload, etc., and achieve high adjustment accuracy and easy on-site operation Effect

Inactive Publication Date: 2015-09-16
CNOOC ENERGY TECH & SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the angle adjustment devices currently used use fixed angle adjustment devices, which cannot achieve accurate alignment during on-site adjustment. At the same time, it is necessary to repeatedly adjust the angle, which is complicated to operate and requires a lot of work.

Method used

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  • Stepless angle adjusting device for rotation of tubular column
  • Stepless angle adjusting device for rotation of tubular column
  • Stepless angle adjusting device for rotation of tubular column

Examples

Experimental program
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Embodiment Construction

[0016] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0017] see Figure 1 to Figure 6 , a stepless angle adjustment device for pipe string rotation, comprising an upper fixed structure connected to the lower end of the upper pipe string, a lower rotating structure connected to the upper end of the lower pipe string, and connecting the upper fixed structure and the lower rotating structure The intermediate connection locking structure.

[0018] The upper fixed structure includes an upper joint 1 and a casing 5 that are sealed and connected sequentially from top to bottom. To connect, a plurality of uniformly distributed slots are arranged outside the lower end of the housing 5 .

[0019] In this embodiment, the specific structure of the housing 5 is as follows: the inner cylindrical surface of...

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Abstract

The invention discloses a stepless angle adjusting device for rotation of a tubular column. The stepless angle adjusting device comprises an upper fixing structure connected to the lower end of an upper tubular column body, a lower rotating structure connected to the upper end of a lower tubular column body and a middle connecting locking structure for connecting the upper fixing structure with the lower rotating structure. The upper fixing structure connected with the upper tubular column body, the lower rotating structure connected with the lower tubular column body and the middle connecting locking structure for fixedly locking the lower rotating structure to the upper fixing structure are adopted, and therefore stepless adjustment of the rotating angle of the lower tubular column body is achieved. The adjusting precision is high, and field operation is easy; and the anti-rotation capacity is achieved so that the device can be suitable for angular adjustment of the lower tubular column body of an oil extraction or water injection work well.

Description

technical field [0001] The invention relates to an oil extraction tool, in particular to a stepless angle adjustment device for downhole production pipe string rotation. Background technique [0002] At present, the canned electric pump oil production system is widely used as a mature technology for offshore oilfield development. One of the key technologies of this system is to solve the problem of the centering of the electric pump unit in the tank, so as to ensure that the electric pump unit is in the production process. In order to solve this problem, an angle adjustment device is usually connected to the upper part of the electric pump unit. In addition, in the eccentric connection environment of the canned electric pump oil production system, the angle adjustment device can also be used when the center adjustment of the lower pipe string is required. However, most of the angle adjustment devices currently used use fixed angle adjustment devices, which cannot achieve ac...

Claims

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Application Information

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IPC IPC(8): E21B17/10
Inventor 赵仲浩李小猛张成富
Owner CNOOC ENERGY TECH & SERVICES
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