用脉冲试井确定垂直裂缝方位的新参数

THE STUDY OF NEW PARAMETERS APPLIED TO THE DETERMINA TION OF VERTICAL FRACTURE ORIENTATION BY PULSE TESTING

本文对用脉冲试井识别垂直裂缝方位的敏感性新参数进行了探索和对比研究。并且筛选出用某特定无因次时间处的无因次压力响应导数作为新的敏感性参数。同时做出更具优越性的典型曲线图版。最后以一个计算实例，与以往文献中最佳参数对比，可以看出新的敏感性参数的优势所在。

This paper makes a systematic discussion and study about those new parameters which are applied to the determination of the compass orientation of vertical fractures by pulse testing. The dimensionless pressure derivative in a certain dimensionless time is picked out as the senstive parameter and more advanced type curves are ploted. It is ended with an actual example by which contrast with the best parameter appeared in the literature the advantages of the new parameter can be demonstrated.