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Import-type hammering riser joint

A riser and hammering technology, which is applied to drilling pipes, casings, drilling equipment, etc., can solve the problems of inability to complete the connection of threaded hammering risers and hammering, so as to improve drilling efficiency and solve on-site operations. difficult and convenient on-site maintenance

Pending Publication Date: 2019-11-22
CNOOC ENERGY TECH & SERVICES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no installation conditions for the above-mentioned power equipment when the unmanned platform and the jacket are hung on the wellhead, so it is impossible to complete the connection and hammering of the threaded hammer riser

Method used

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  • Import-type hammering riser joint
  • Import-type hammering riser joint
  • Import-type hammering riser joint

Examples

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Embodiment Construction

[0014] 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:

[0015] see Figure 1 ~ Figure 3 , a lead-in hammer riser joint, comprising an inner joint 1 and an outer joint 2 butted up and down, the middle and lower part of the inner joint 1 is inserted into the outer joint 2, and the middle and lower part of the inner joint 1 is provided with There are a plurality of helical teeth 1-1 evenly distributed along the circumferential direction, and a plurality of helical alveoli 2-1 are arranged inside the outer joint 2, and the inner joint 1 and the outer joint 2 are connected through the alveoli, The helical teeth 1-1 of the inner joint 1 are automatically introduced into the helical alveolar 2-1 in the outer joint 2 under the action of gravity, so as to realize the engagement of the helical teeth 1-1 and...

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Abstract

The invention discloses an import-type hammering riser joint. The import-type hammering riser joint comprises an inner joint and an outer joint which are in up-down butt connection, the middle lower part of the inner joint is inserted into the outer joint and provided with a plurality of spiral teeth evenly distributed in the circumferential direction, a plurality of spiral tooth grooves are formed inside the outer joint, the inner joint and the outer joint are connected through the tooth grooves, a plurality of anti-falling-off blocks evenly distributed in the circumferential direction are fixed to the butt connection position of the inner joint and the outer joint, and the anti-falling-off blocks are embedded in the outer sides of the inner joint and the outer joint; and an O-shaped sealing ring is arranged at the lower end of the inner joint, and mounted between the inner joint and the outer joint in a clamped mode. According to the import-type hammering riser joint, torque equipment does not need to be utilized, self-centering import is achieved, construction on an offshore platform is very convenient, connection operation can be completed only through a simple hand-held tool,performance is stable, and the requirements of tripping-in hammering operation can be met.

Description

technical field [0001] The invention relates to the field of offshore oil drilling, in particular to a lead-in hammer riser joint. Background technique [0002] In the process of offshore oil drilling and development, risers need to be used to isolate seawater for oil and gas development. The existing types of riser joints that can be used for hammering operations are mainly welded and threaded. The anti-corrosion is the same as that of the pipe body, and the on-site cooling time is insufficient, so that there is a certain risk in the hammering operation, and the welding quality is adversely affected. At the same time, the operation is greatly affected by the season, temperature and humidity, and the operation efficiency is unstable. The threaded hammer riser needs to be equipped with torque tongs, hydraulic casing tongs, winches and other power equipment to realize the connection. There are no installation conditions for the above-mentioned power equipment when the unmanne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/08
CPCE21B17/085
Inventor 曹帅帅李淑涛常芹李晓林王昆剑修海媚杨成袁浩张佳宁吴智文陈增海孙英伟宋涛冯绍明刘光春曹良伟沈国华啜广山
Owner CNOOC ENERGY TECH & SERVICES
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