Simulation Of In-situ Stress Field Of Low Permeability Reservoir Of Fuyang Formation In Zhou 201 Block

The simulation technique of the In-situ stress field, which is the combination of logging, seismological, geology, reservoir engineering and calculator technique, is an interdisciplinary between geology and engineering knowledge. Now,the Simulation technique of the In-situ Stress Field is more of focusing on the region of well neighbor at home and abroad, and there are few studies on stress field model among wells.The rock mechanics characteristic of low permeability reservoirs of Fuyang formation in Daqing field is analyzed and investigated in this paper. The In-situ stress field of low permeability reservoirs of Fuyang formation in Zhou201 Block is established by combining of 3D seismic and logging data. A conventional log curve computation module, which is established by using multiple regression calculation procedure, can calculate Poisson ratio, Young's modulus, fracture pressure and shut-in pressure of rock, and other rock mechanics parameter. The change of rock mechanics property in both longitudinal and transverse direction among wells is reflected by this module clearly. Especially, the change of both stress intensity and stress barrier can provide evidences of fracturing parameter design.Meanwhile, base on conservation of matter theory, the relative strain capacity, absoluteness strain capacity and structure curvature data, which provides the importance foundation for prediction of man-made fracture, is gotten by structural evolution simulation of 3D equilibrium profile.The three-dimensional data of in-situ stress field along whatever tracks of well-bore,which is realized by using visualization technology, is outputted and loaded in GOFER to implement fracturing optimization design.