各向异性快地层最小水平主应力测井计算方法
发布时间:2018-03-13 07:22
本文选题:岩石力学参数 切入点:测井评价 出处:《石油勘探与开发》2017年05期 论文类型:期刊论文
【摘要】:利用测井资料来准确计算5个独立的刚性系数(C_(11)、C_(33)、C_(44)、C_(66)和C_(13)),以解决横观各向同性快地层最小水平主应力的测井计算难题。通过声速各向异性及黏土含量实验测量,分析并建立了声波各向异性系数与黏土含量的函数关系及不同刚性系数之间的转换关系,在此基础上建立了一套利用测井资料计算各向异性快地层刚性系数及最小水平主应力的方法。实际应用表明,该方法与仅适用于慢地层的基于水平横波速度的计算方法互为补充,可用于评价致密油气储集层岩石力学参数,优选压裂试油层段。
[Abstract]:Five independent rigid coefficients can be accurately calculated by using logging data. The functional relationship between acoustic anisotropy coefficient and clay content and the conversion relationship between different rigidity coefficients are analyzed and established. On this basis, a set of methods for calculating stiffness coefficient and minimum horizontal principal stress of anisotropic fast formation using logging data are established. The practical application shows that, This method is complementary to the calculation method based on horizontal shear wave velocity which is only suitable for slow formation. It can be used to evaluate the rock mechanics parameters of tight oil and gas reservoir and to select the fracturing test zone.
【作者单位】: 中国石油勘探开发研究院;中国石油长庆油田公司勘探开发研究院;中海石油有限公司湛江分公司南海西部石油研究院;
【基金】:国家科技重大专项(2016ZX05046-002)
【分类号】:P631.81;TE311
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本文编号:1605359
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