| 基于dc指数的2种异常压力随钻预监测新方法 |
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| 引用本文： | 王志战,盖姗姗,许爱生. 基于dc指数的2种异常压力随钻预监测新方法[J]. 中南大学学报(自然科学版), 2012, 43(4): 1429-1433 |
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| 作者姓名： | 王志战 盖姗姗 许爱生 |
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| 作者单位： | 1. 中国石化石油工程技术研究院测录井研究所,北京100101;中国石化集团胜利石油管理局地质录井公司,山东东营,257064
2. 中国石化集团胜利石油管理局地质录井公司,山东东营,257064 |
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| 基金项目： | 中国博士后科学基金资助项目(20090461267);中国石化科技开发项目(JP09011) |
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| 摘 要： | 针对dc指数法监测程度高、预测程度低,并且趋势线的选择困难的问题,分别提出测录井资料联用的随钻动态预测方法和不依助于趋势线的修正dc指数方法,前者通过邻井的声波时差曲线预测目的井的dc指数曲线,通过与实钻dc指数进行对比,实现地层压力的动态预测:后者通过计算正常压实地层的机械钻速,摆脱了对趋势线的依赖.实际应用结果表明:这2种方法都能够提高异常压力随钻预监测的水平.
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| 关 键 词： | dc指数 异常压力 随钻预监测 测录井资料联用 趋势线 |
Two new methods based on d_c exponent for abnormal pressure prediction and detection during drilling |
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| WANG Zhi-zhan , GAI Shan-shan , XU Ai-sheng. Two new methods based on d_c exponent for abnormal pressure prediction and detection during drilling[J]. Journal of Central South University:Science and Technology, 2012, 43(4): 1429-1433 |
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| Authors: | WANG Zhi-zhan GAI Shan-shan XU Ai-sheng |
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| Affiliation: | 1.Logging Department,SINOPEC Research Institute of Petroleum Engineering,Beijing 100101,China; 2.Geologging Company,Shengli Petroleum Administration Bureau,SINOPEC,Dongying 257064,China) |
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| Abstract: | In order to solve the problem that dc exponent method has high degree of detection,but low degree of prediction,and is more difficult in the selection of trend line,the dynamic prediction method combining well logging data and mud logging data and correctional dc exponent method which does not depend on trend line were put forward.The former realizes formation pressure prediction by comparison actual dc exponent with predicted dc exponent based on AC acoustic curve of adjacent well.The latter gets rid of trend line by calculating penetration rate of normal compacted formation.The results show that the two methods can improve the level of abnormal pressure prediction and detection during drilling. |
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| Keywords: | dc exponent abnormal pressure prediction and detection while drilling joint application of well logging data and mud logging data trend line |
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