Improvements in Hydrofracturing Procedure and InterpretationThrough Laboratory Tests

水压致裂法地应力测量 在过去的十五年里已经发展成为一种不可或缺的工具， 在地球物理研究中。 例如， 美国第一次在Cajon Pass进行深层科学钻探， 加州，是衡量压力的状态，主要是通过 在圣安德烈亚斯断层附近进行水力压裂。 分析水力压裂的一般可靠性、不确定性 在其解释仍然存在和情况下，该方法是 现在只有部分成功或完全失败， 浮出水面 至少有三个主要的分歧来源， 水力压裂资料解释的几个基本原则：（1）阅读 从现场记录中纠正错误，（2）使用正确的模型 用于计算原地应力和（3）评估 预先存在的裂缝对水力压裂压力的影响， 方向 这项研究试图解决其中的一些问题 通过实验室测试和数据分析的困难。 在 此外，实验验证建议的创新 将对该方法进行改进。 如此自信- 这些替代技术中的一个或多个的实现将使得能够 它们在补充或取代传统的 水力压裂法

The hydrofracturing method of in situ stress measurement has evolved in the last fifteen eyars into an indispensable tool in geophysical research. For example, a major objective of the first deep scientific drilling in the U.S. at Cajon Pass, California, is to measure the state of stress, primarily by hydrofracturing, in the vicinity of the San Andreas fault. Depsite the general reliability of hydrofracturing, uncertainties in its interpretation still exist and cases where the method is only partially successful or totally unsuccessful are now surfacing. There are at least three major sources of diffi- culties in hydrofracturing data interpretaion: (1) reading the correct pessures from field records, (2) using the correct model for calculating the in situ stresses and (3) evaluating the effect of preexisting fractures on hydrofrac pressures and directions. The research is an attempt to resolve some of these difficulties through laboratory testing and data analysis. In addition, experimental verification of suggested innovative improvements of the method will be carried out. Such confir- mation of one or more of these alternate techniques would enable their use in either complementing orreplacing conventional hydrofracturing.