Based on many experiments, this paper discusses the effect of rock modulus of elasticity on fracture shape and operating pressure, presents the testing method of Biot coefficient,and introduces its applications in calculation of horizontal stress.

• 本文在一系列试验的基础上，描述了岩石弹性模量对压裂裂缝几何形状、施工压力等的影响，并给出了毕奥特系数的试验方法及其在水平应力计算中的应用。