井下防喷器坐封后多相流瞬态流动规律研究

doi:10.11885/j.issn.1674-5086.2020.05.20.03

西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (1): 158-164.DOI: 10.11885/j.issn.1674-5086.2020.05.20.03

井下防喷器坐封后多相流瞬态流动规律研究

谷磊¹, 胡艺凡², 马兰荣¹, 尹慧博¹, 李皋²

1. 中国石化石油工程技术研究院，北京朝阳 100101;
2. 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

收稿日期:2020-05-20 发布日期:2022-01-25
通讯作者: 李皋，E-mail：lgmichael@263.net
作者简介:谷磊，1979年生，男，汉族，山东兖州人，研究员，博士，主要从事井下工具方面的研究。E-mail：gulei.sripe@sinopec.com;
胡艺凡，1997年生，女，汉族，四川武胜人，硕士研究生，主要从事井筒多相流、井筒温度场预测等方面的研究工作。E-mail：502288867@qq.com;
马兰荣，1967年生，女，汉族，河北东光人，教授级高级工程师，博士，主要从事固完井工具方面的研究。E-mail：malr.sripe@sinopec.com;
尹慧博，1971生，女，汉族，吉林蛟河人，高级工程师，硕士，主要从事钻井提速工具方面的研究。E-mail：yhb708@sohu.com;
李皋，1976年生，男，汉族，四川武胜人，研究员，博士，主要从事气体钻井、欠平衡钻井、控压钻井、复杂油气藏储层保护及非常规油气资源勘探开发相关基础理论及应用技术等方面的研究。E-mail：lgmichael@263.net

Research on Transient Flow Law of Multiphase Flow After Down-hole Blowout Preventer Setting

GU Lei¹, HU Yifan², MA Lanrong¹, YIN Huibo¹, LI Gao²

1. SINOPEC Research Institute of Petroleum Engineering, Chaoyang, Beijing 100101, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2020-05-20 Published:2022-01-25

摘要/Abstract

摘要： 钻井钻遇高压、高产气层后，井漏、气侵及溢流等复杂情况多发。目前，井口防喷器的研究已日趋成熟，但对井下防喷器坐封后多相流瞬态流动规律的研究较少。为此，针对井下防喷器坐封后下部井筒复杂流动特性，建立了一套防喷器坐封后下部地层—井筒耦合瞬态流动数学模型及其数值求解方法，对井下防喷器坐封后压力分布及影响因素进行了分析。实例模拟计算表明，防喷器期坐封期间，采用不同下深防喷器的井筒压力演变规律基本一致；不同地层渗透率下井底压力都先呈增加趋势，渗透率越大，井底压力升至地层压力的所需时间越短；随着气侵量不断增加，不同初始井底压力最终都稳定在地层压力附近。

关键词: 井下防喷器, 多相流, 瞬态流动模型, 流动规律, 压力分布

Abstract: When drilling encounters high-pressure and high-production gas layers, there are many complicated situations such as lost circulation, gas invasion and overflow. At present, the research of wellhead BOP has become more mature, but research on the transient flow law of multiphase flow about the down-hole BOP is inadequate. For this reason, in view of the complex flow characteristics of the lower wellbore after setting of the down-hole BOP, a mathematical model and numerical solution of the formation-wellbore coupled transient flow after setting of the down-hole BOP are established. The pressure distribution and influencing factors are analyzed. The simulation results of the example show that, after setting of the down-hole BOP, the wellbore pressure evolution at different depths is basically the same; under different formation permeability, the bottom hole pressure increases exponentially and then increases linearly; as the amount of gas intrusion continues to increase, the initial down hole pressures will eventually stabilize around the formation pressure.

Key words: down-hole blowout preventer, multiphase flow, transient flow model, flow law, pressure distribution

中图分类号:

TE28

谷磊, 胡艺凡, 马兰荣, 尹慧博, 李皋. 井下防喷器坐封后多相流瞬态流动规律研究[J]. 西南石油大学学报(自然科学版), 2022, 44(1): 158-164.

GU Lei, HU Yifan, MA Lanrong, YIN Huibo, LI Gao. Research on Transient Flow Law of Multiphase Flow After Down-hole Blowout Preventer Setting[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(1): 158-164.

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井下防喷器坐封后多相流瞬态流动规律研究

Research on Transient Flow Law of Multiphase Flow After Down-hole Blowout Preventer Setting

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