页岩气井环空带压安全风险定量评价方法研究

doi:10.11885/j.issn.1674-5086.2019.09.18.01

西南石油大学学报(自然科学版) ›› 2019, Vol. 41 ›› Issue (6): 146-154.DOI: 10.11885/j.issn.1674-5086.2019.09.18.01

页岩气井环空带压安全风险定量评价方法研究

曾德智¹, 喻智明¹, 何奇垚¹, 刘乔平², 施太和¹

1. 油气藏地质及开发工程国家重点实验室·西南石油大学, 四川成都 610500;
2. 中国石化重庆涪陵页岩气勘探开发有限公司, 重庆涪陵 408014

收稿日期:2019-09-18 出版日期:2019-12-10 发布日期:2019-12-10
通讯作者: 曾德智,E-mail:zengdezhi1980@163.com
作者简介:曾德智,1980年生,男,汉族,四川宜宾人,教授,主要从事油气田腐蚀与防护、石油管力学与环境行为方面的研究工作。E-mail:zengdezhi1980@163.com;喻智明,1992年生,男,汉族,四川阆中人,博士研究生,主要从事油气井井筒完整性及管柱腐蚀方面的研究。E-mail:835141711@qq.com;何奇垚,1992年生,男,汉族,四川南充人,博士研究生,主要从事油气井井筒完整性及管柱腐蚀方面的研究。E-mail:1543046649@qq.com;刘乔平,1974年生,男,土家族,贵州江口人,高级工程师,主要从事采气工艺技术研究工作。E-mail:lqp6623@163.com;施太和,1938年生,汉族,贵州安顺人,教授,博士生导师,主要从事油气井工程方向应用基础和工程技术研究。E-mail:taiheshi@126.com
基金资助:
国家自然科学基金（51774249）

Research on Safety Assessment Technology of Sustained Casing Pressure in Shale Gas

ZENG Dezhi¹, YU Zhiming¹, HE Qiyao¹, LIU Qiaoping², SHI Taihe¹

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Chongqing Fuling Shale Gas Exploration and Production Corporation, SINOPEC, Fuling, Chongqing 408014, China

Received:2019-09-18 Online:2019-12-10 Published:2019-12-10

摘要/Abstract

摘要： 针对页岩气开发过程中井筒完整性失效引发的环空带压问题，开展了页岩气井井筒环空带压安全风险定量评估研究。基于模糊综合评判理论，充分考虑页岩气井的井筒实体屏障、流体屏障、运行管理等实际情况，建立了以环空压力、固井质量和地层完整性3个关键风险指标为依据的页岩气环空带压井安全风险评估方法，在某页岩气田进行了应用，对19口环空带压井的风险值和风险度进行了定量评估，并根据风险评价结果，从环空最大许可带压值确定、环空带压诊断、环空带压监测管理等方面给出了一套页岩气井环空带压安全管控推荐作法，研究成果为页岩气井的安全生产提供了重要的技术指导。

关键词: 页岩气井, 环空带压, 风险评估, 模糊综合评判, 安全管控

Abstract: Aiming at the potential safety risks of wellbore annulus pressure caused by the integrity failure of the wellbore in the process of shale gas development, a safety risk assessment method for shale gas annulus compression wells is established. Based on the three key risk indicators of annulus pressure, cementing quality and formation integrity, this method considers the physical barrier, fluid barrier and operation management of shale gas wells based on fuzzy comprehensive evaluation theory. This method was applied to quantitative evaluation of the risk value and risk of 19 annulus pressure in a shale gas field. According to the results of risk assessment, a set of recommended practices for safety control of shale gas wells is presented from the aspects of determination of the maximum allowable value of annular pressure, diagnosis, monitoring and management of annular pressure, which provides important technical guidance for the safe production of shale gas wells.

Key words: shale gas well, SCP, risk assessment, fuzzy evaluation, security management

中图分类号:

TE37

曾德智, 喻智明, 何奇垚, 刘乔平, 施太和. 页岩气井环空带压安全风险定量评价方法研究[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 146-154.

ZENG Dezhi, YU Zhiming, HE Qiyao, LIU Qiaoping, SHI Taihe. Research on Safety Assessment Technology of Sustained Casing Pressure in Shale Gas[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 146-154.

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页岩气井环空带压安全风险定量评价方法研究

Research on Safety Assessment Technology of Sustained Casing Pressure in Shale Gas

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