典型文献
Acoustic Prediction and Risk Evaluation of Shallow Gas in Deep-Water Areas
文献摘要：
Shallow gas is a potential risk in deep-water drilling that must not be ignored,as it may cause major safety problems,such as well kicks and blowouts.Thus,the pre-drilling prediction of shallow gas is important.For this reason,this paper conducted deep-water shallow gas acoustic simulation experiments based on the characteristics of deep-water shallow soil properties and the theory of sound wave speed propagation.The results indicate that the propagation speed of sound waves in shallow gas increases with an in-crease in pressure and decreases with increasing porosity.Pressure and sound wave speed are basically functions of the power expo-nent.Combined with the theory of sound wave propagation in a saturated medium,this paper establishes a multivariate functional rela-tionship between sound wave speed and formation pressure and porosity.The numerical simulation method is adopted to simulate shal-low gas eruptions under different pressure conditions.Shallow gas pressure coefficients that fall within the ranges of 1.0-1.1,1.1-1.2,and exceeding 1.2 are defined as low-,medium-,and high-risk,respectively,based on actual operations.This risk assessment me-thod has been successfully applied to more than 20 deep-water wells in the South China Sea,with a prediction accuracy of over 90％.
文献关键词：
中图分类号：
作者姓名：
YANG Jin;WU Shiguo;TONG Gang;WANG Huanhuan;GUO Yongbin;ZHANG Weiguo;ZHAO Shaowei;SONG Yu;YIN Qishuai;XU Fei
作者机构：
College of Safety and Ocean Engineering,China University of Petroleum(Beijing),Beijing 102249,China;Institute of Deep-Sea Science and Engineering,Chinese Academy of Sciences,Sanya 572000,China;CNOOC Research Institute,Beijing 100028,China;CNOOC China Limited Shenzhen Branch,Shenzhen 518000,China;CNOOC China Limited,Beijing 100010,China
文献出处：
引用格式：
[1]YANG Jin;WU Shiguo;TONG Gang;WANG Huanhuan;GUO Yongbin;ZHANG Weiguo;ZHAO Shaowei;SONG Yu;YIN Qishuai;XU Fei-.Acoustic Prediction and Risk Evaluation of Shallow Gas in Deep-Water Areas)[J].中国海洋大学学报（自然科学英文版）,2022(05):1147-1153
A类：
blowouts
B类：
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AB值：
0.553731
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