碳酸盐岩声发射地应力测量方法实验研究

卢运虎; 陈勉; 金衍; 潘东兴; 侯冰

碳酸盐岩声发射地应力测量方法实验研究 English Version

1. 中国石油大学油气资源与探测国家重点实验室，北京 102249 ； 2. 中国石油化工集团国际石油工程有限公司，北京 100728

基金项目: 973 项目（ 2010 CBN2267002008 ）；教育部新世纪优秀人才支持计划（ NCET-08-0840 ）

详细信息

作者简介:
卢运虎 (1983 – ) ，男，博士研究生，主要从事地应力、岩石力学参数测试方法和钻井过程中井壁稳定力学中的有效应力、岩石本构关系、岩石动态特性、岩石屈服与破坏等基本问题研究。

中图分类号: TU413
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出版历程
- 发布日期: 2011-08-14

Experimental study on stress measurement for sound emission in carbonate formation

1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; 2. International Petroleum Engineering Ltd., SINOPEC, Beijing 100728, China

摘要

摘要: 在碳酸盐岩 Kaiser 效应实验研究的基础上，分析了不同加载应力和岩芯放置时间对碳酸盐岩 Kaiser 效应点的影响规律，得出预加载应力为单轴强度的（ 25% ～ 70% ）、放置时间为 4 个月左右时岩石的 Kaiser 效应记忆性最好；讨论了 Felicity 效应比值的分布特征，获得了应力、时间耦合下碳酸盐岩地应力的计算公式，形成了碳酸盐岩地层地应力确定方法。该法应用于西部某油田地应力测量，解释出的地应力结果精度满足工程应用的要求，解决了时间、应力敏感性带来的碳酸盐岩地应力测量精度低的难题，完善了地应力的测量体系，为碳酸盐岩地层高效开发提供了基础数据。
- 碳酸盐岩 /
- 地应力 /
- Kaiser效应 /
- 时间敏感性 /
- 应力敏感性
Abstract: Based on the experimental study on the Kaiser effect for carbonate formation, the effect of different loading stresses and the time of core storage on Kaiser effect points for carbonate formation are analyzed. It is concluded that when the pre-loaded stress is 25% -70 % of the uniaxial strength and the time of core storage is 4 months, the Kaiser effect memory is the best. The distribution characteristics of the ratio of Felicity effect are discussed, the in-stress formula for carbonate formation which couples time and stress is obtained, and the method for stress determination in carbonate formation is generated. This method is applied to the stress measurement in an oil field in western China. The precision of the explained stress meets the requirements of engineering application. The problem of low precision of in-stress measurement for carbonate formation caused by time and stress sensitivity is solved. The proposed method improves stress measurement system and provides basic data for the efficient exploitation of carbonate formation.
- carbonate formation /
- in-situ stress /
- Kaiser effect /
- time sensitivity /
- stress sensitivity

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参考文献(15)

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