| 井喷关井水击压力计算及可靠性分析 |
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| 引用本文： | 史富全,李相方,杨喜,杨保健,罗曼.井喷关井水击压力计算及可靠性分析[J].海洋石油,2021,41(1):78-82. |
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| 作者姓名： | 史富全 李相方 杨喜 杨保健 罗曼 |
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| 作者单位： | 中海石油(中国)有限公司天津分公司,天津,300452;中国石油大学(北京),北京 102249;中海油能源发展股份有限公司工程技术分公司,天津 300452 |
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| 摘 要： | 钻井过程中，发生了溢流或井喷，应立即关井。关井过程中，防喷器需经受关井产生的水击压力作用。该文对井喷喷流为天然气、钻井液和气液两相混合物三种情况下的关井水击压力进行分析计算，并以此进行了关井可靠性分析。分析认为，仅在井喷喷流为钻井液且喷流速度较大时，关井方式应选择“软关井”，以降低关井水击压力，其他情况应选择“硬关井”，以减少地层流体侵入。
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| 关 键 词： | 井控 水击压力 井喷喷流 气液两相 关井方式 |
| 收稿时间： | 2020-03-18 |
Calculation and Reliability Analysis of the Shut-in Water Hammer Pressure in Case of Blowout |
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| SHI Fuquan,LI Xiangfang,YANG Xi,YANG Baojian,LUO Man.Calculation and Reliability Analysis of the Shut-in Water Hammer Pressure in Case of Blowout[J].Offshore Oil,2021,41(1):78-82. |
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| Authors: | SHI Fuquan LI Xiangfang YANG Xi YANG Baojian LUO Man |
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| Affiliation: | 1.CNOOC (China) Ltd. Tianjin, Tianjin, 3004522.China University of Petroleum (Beijing), Beijing, 1022493.CNOOC EnerTech-Drilling & Production Co., Ltd., Tianjin 300452, China |
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| Abstract: | In case of overflow or blowout during drilling,the well should be shut down immediately.During the shut-in process,the BOP needs to withstand the shut-in water hammer pressure.This paper analyzes and calculates the shut-in water hammer pressure when the blowout jet is natural gas,drilling fluid and gas-liquid two-phase mixture.Based on this,the shut-in reliability analysis is performed.According to the analysis,only when the blowout jet is drilling fluid and the jet velocity is large,"Soft Shut-in"should be selected to reduce the shut-in water hammer pressure.In other cases,"Hard Shut-in"should be selected to reduce formation fluid intrusion. |
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| Keywords: | well control water hammer pressure blowout jet gas-liquid two phase flow shut-in mode |
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