气井用套管气密封螺纹接头制造技术

本发明专利技术涉及气井用套管气密封螺纹接头，包括螺纹接头、设置在螺纹接头间的扭矩台肩和主密封，主密封包括靠近扭矩台肩的第一密封和靠近螺纹接头的第二密封；第一密封为锥面/锥面密封结构，第二密封为锥面/球面密封结构；所述扭矩台肩为-4.5°～-5.5°扭矩台肩。本发明专利技术解决了现有气井管柱气密封螺纹接头容易出现粘扣、密封不稳、台肩失效、台肩腐蚀泄露等技术问题，本发明专利技术具有良好的密封完整性，能够确保套管柱的结构和密封完整性。

Sleeve gas sealing screw joint for gas well

The present invention relates to a gas seal casing thread joints for gas well, including threaded joint, is arranged in the threaded joint between the torque shoulder and the main seal, the main seal includes a first sealing torque shoulder near and close to the second thread joint seal; the first sealing cone / cone sealing structure, sealing the second cone / spherical seal structure; the torque shoulder is -4.5 DEG to -5.5 DEG torque shoulder. The invention solves the problem that the existing gas tubes of gas prone to technical problems gluing, sealing failure, instability, shoulder shoulder corrosion leak sealing thread joint, the invention has the advantages of good sealing integrity, to ensure that the structure of the casing string and seal integrity.

【技术实现步骤摘要】

【技术保护点】
一种气井用套管气密封螺纹接头，包括螺纹接头、设置在螺纹接头间的扭矩台肩（１）和主密封，其特征在于：所述主密封包括靠近扭矩台肩（１）的第一密封（２）和靠近螺纹接头的第二密封（３）；所述第一密封为锥面／锥面密封结构，所述第二密封为锥面／球面密封结构；所述扭矩台肩为－４．５°～－５．５°扭矩台肩。

【技术特征摘要】
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【专利技术属性】
技术研发人员：王建东，杨力能，冯耀荣，秦长毅，杨龙，宋生印，易晓明，刘文红，
申请(专利权)人：中国石油集团石油管工程技术研究院，西安三环科技开发总公司，
类型：发明
国别省市：87