5Durhuus J,Aadnoy B S. In Situ Stress from Inversion of Fracturing Data from Oil Wells and Borehole Image Logs[J]. Journal of Petroleum Science and Engineering, 2003,38.
6Ahmed U, Starwn J, Wilson M. Effect of Stress Distribution on Hydraulic Fracture Geometry: A Laboratory Simulation Study in One Meter Cubic Blocks[C] // SPE 11637, 1983.
7Palmer I D. Three Dimensional Hydraulic Fracture Propagation in Presence of Stress Variation[R] SPE/ DOE 10849.
8Danishy A A. On The Design of Vertical Hydraulic Fractures [J]. JPT, 1973(1) : 98-105.