岩心分析过程中的表皮效应

SKIN EFFECT IN CORE ANALYSIS

为了深入了解和正确使用岩心分析资料,文章研究了岩心分析过程中的表皮效应。岩石的表皮对岩石物性参数的测量产生一定的影响,此即表皮效应。毛细管压力曲线测量过程中的表皮效应,通过延长毛细管压力曲线中间段可以加以消除。岩石压缩系数和应力敏感测试过程中的表皮效应,对测试结果产生了严重的影响,致使测试结果出现了反常现象。实验分析应改进测试手段和测试方法,努力消除表皮效应对测试结果产生的负面影响。

For proper use of the measured data of core analysis, a study was conducted in this paper on the skin effects in core analysis. The skin of a core affects seriously the measurement of rock property, which is called the skin effect. The skin effect in capillary pressure measurement can be eliminated by extension of the mid-section of capillary curve. The skin effect in rock compressibility measurements and stress-sensibility measurements distorted the rule of rock property. Improvement of measurement is needed for correct data of core analysis.