窄安全压力窗口地层精细控压下套管技术研究

doi:10.11885/j.issn.1674-5086.2020.10.12.03

西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (6): 54-61.DOI: 10.11885/j.issn.1674-5086.2020.10.12.03

窄安全压力窗口地层精细控压下套管技术研究

徐璧华¹, 李俊蝠¹, 李斌², 田东诚³, 饶福家⁴

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. 中国石油西南油气田分公司工程技术研究院, 四川成都 610017;
3. 中国石油大庆钻探工程公司钻井生产技术服务一公司, 黑龙江大庆 163358;
4. 中国石油西南油气田分公司川中油气矿, 四川遂宁 629000

收稿日期:2020-10-12 发布日期:2023-01-16
通讯作者: 李俊蝠,E-mail:lijunfu1993@163.com
作者简介:徐璧华,1964年生,男,汉族,四川成都人,教授,主要从事油气井固井水泥浆体系和水泥环力学性能方面的研究工作。E-mail:xubh@vip.163.com
李俊蝠,1993年生,男,汉族,四川成都人,硕士,主要从事油气井固井工艺方面的研究。E-mail:lijunfu1993@163.com
李斌,1987年生,男,汉族,四川蓬溪人,工程师,主要从事钻井与固井相关技术方面的研究。E-mail:libin2015@petrochina.com.cn
田东诚,1972年生,男,汉族,黑龙江大庆人,高级工程师,主要从事油气井固井技术方面的研究工作。E-mail:892123285@qq.com
饶福家,1985年生,男,汉族,四川遂宁人,工程师,主要从事钻井工程现场管理工作。E-mail:raofujia@petrochina.com.cn

Research on Managed Pressure Casing Technology in Narrow Safety Pressure Window Formation

XU Bihua¹, LI Junfu¹, LI Bin², TIAN Dongcheng³, RAO Fujia⁴

1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Engineering Technology Research Institute, Southwest Oil & Gas Field Company, PetroChina, Chengdu, Sichuan 610017, China;
3. No. 1 Drilling Production Technology Service Company of Daqing Drilling Engineering Company, PetroChina, Daqing, Heilongjiang 163358, China;
4. Chuanzhong Oil & Gas Mine, Southwest Oil & Gas Field Company, CNPC, Suining, Sichuan 629000, China

Received:2020-10-12 Published:2023-01-16

摘要/Abstract

摘要： 针对窄安全压力窗口地层下套管存在高漏失风险的问题，以瞬态波动压力为基础，建立了窄安全压力窗口地层下套管过程井筒压力控制模型，进而提出了精细控压下套管方法。利用瞬态波动压力模型进行了下套管过程波动压力敏感性分析，结果表明，套管下放速度越大、套管下入深度越深、钻井液密度越大、环空间隙越小，下套管引起的井底波动压力越大。精细控压下套管实例应用表明，该方法既能保证套管下放速度，又能有效避免窄安全压力窗口地层下套管漏失的发生。此外，通过实例对比精细控压下套管与常规下套管发现，套管下放到井底附近，采用常规方法下套管时套管下放最大速度调节范围非常窄，很难将井筒压力维持在安全压力窗口内。

关键词: 下套管, 窄安全压力窗口, 瞬态波动压力, 精细控压, 井漏

Abstract: Aiming at the problem of high loss risk of casing running in narrow safety pressure window formation, based on transient surge pressure, a wellbore pressure control model for casing running in narrow safety pressure window formation is established, and then a precise pressure control method for casing running is proposed. Firstly, the sensitivity analysis of casing surge pressure is carried out by using the transient surge pressure model. The results show that the higher the casing running speed, the deeper the casing sinking depth, the greater the drilling fluid density and the smaller the annulus clearance, the greater the bottom-hole surge pressure caused by casing. A case study of casing running under precise pressure control shows that this method can not only ensure casing running speed, but also effectively avoid loss in narrow safe pressure window formation. In addition, by comparing the precise pressure control casing running with the conventional casing running, it is found that the maximum speed adjustment range of casing running is very narrow when the casing running with the conventional method is near the bottom of the well, which makes it difficult to maintain the wellbore pressure within the safety pressure window.

Key words: casing running, narrow safety pressure window, transient surge pressure, precise managed pressure, lost circulation

中图分类号:

TE256

徐璧华, 李俊蝠, 李斌, 田东诚, 饶福家. 窄安全压力窗口地层精细控压下套管技术研究[J]. 西南石油大学学报(自然科学版), 2022, 44(6): 54-61.

XU Bihua, LI Junfu, LI Bin, TIAN Dongcheng, RAO Fujia. Research on Managed Pressure Casing Technology in Narrow Safety Pressure Window Formation[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(6): 54-61.

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窄安全压力窗口地层精细控压下套管技术研究

Research on Managed Pressure Casing Technology in Narrow Safety Pressure Window Formation

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