深层油气井井筒完整性检测方法

A Method for Wellbore Integrity Detection in Deep Oil and Gas Wells

张波 罗方伟 孙秉才 谢俊峰 胥志雄 廖华林

ZHANG Bo LUO Fangwei SUN Bingcai XIE Junfeng XU Zhixiong LIAO Hualin

中国石油集团安全环保技术研究院有限公司，北京 102206 中国石油塔里木油田分公司，新疆库尔勒 841000 中国石油大学（华东）石油工程学院，山东青岛 266580

CNPC Research Institute of Safety & Environment Technology, Beijing, 102206, China PetroChina Tarim Oilfield Company, Korla, Xinjiang, 841000, China School of Petroleum Engineering, China University of Petroleum(East China), Qingdao, Shandong, 266580, China

为解决深层油气井井筒“完整性失效部位不唯一、失效形式多样化”、定位识别难度大的问题，基于现有检测方法，集成优化相关设备和工艺，形成了以“声波+电磁”特征为核心的深层油气井井筒完整性检测方法，能够准确定位并识别油管泄漏、丝扣渗漏、套管泄漏、套后水泥环窜流、液面下泄漏和多重泄漏。采用该方法检测了试验井的井筒完整性，成功确定了生产管柱两泄漏点的位置和泄漏类型。研究和现场试验结果表明，研究形成的检测方法可准确识别深油气井井筒完整性失效类型和确定失效位置，可为深层油气井建井、修井和井筒完整性管理提供技术支撑。

Given the problems of multiple failure points and various failure types of wellbore integrity and the difficulty in locating and identifying failures in deep oil and gas wells, a method for wellbore integrity detection was proposed on the basis of available detection methods and integrated optimization of related equipment and processes. With acoustic and electromagnetic features as the core, this method could locate and identify tubing leakage, thread leakage, casing leakage, cement sheath channeling outside of the casing, leakage under liquid level, and multiple leakages. The wellbore integrity of a test well was detected by this method. Two leakage points in the production string and the leakage types were identified. The research and field tests indicate that the proposed method can accurately identify the failure types and locate the failure points of wellbore integrity in deep oil and gas wells. This study provides technological support for the construction, workover, and wellbore integrity management of deep oil and gas wells.

中国博士后科学基金项目“温压效应下环空液体漏失机理与热膨胀压力可控性研究”（编号：2019M662467）、国家科技重大专项“超深超高压气井优快建井与采气技术”（编号：2016ZX05051003)、中国石油前瞻性基础性战略性技术攻关项目“高压油气井油套管泄漏地面监测诊断技术及风险预警技术与装备研究”（编号：2021DJ6504）、“油气集输场站与储气库安全可视化实时监测预警技术研究”（编号：2021DJ6501）联合资助

https://doi.org/10.11911/syztjs.2021127