摘要 : This work demonstrates a scientific geomechanical modeling method and provides three-dimensional (3D) modeling workflow for the B oilfield in Indonesia. The formation pressure profile in the B oilfield is unclear. The formation se... 展开 This work demonstrates a scientific geomechanical modeling method and provides three-dimensional (3D) modeling workflow for the B oilfield in Indonesia. The formation pressure profile in the B oilfield is unclear. The formation seriously collapsed during drilling. Unreasonable mud density and well structure cause severe borehole collapse and weak formation leakage. The average drilling cycle is 55 days. The maximum drilling cycle is 123 days. It is essential to conduct a serious study on borehole stability management and drilling optimization for the drilling campaign. In this paper, through a series of core tests, well-drilled logging data, and seismic inversion data, the work performs a fine description of the mechanical parameters of the B oilfield. The three-dimensional elastic modulus, three-dimensional Poisson's ratio, three-dimensional pore pressure, and other vital parameters of the B oilfield are established. A heterogeneous, porous, elastoplastic three-dimensional geomechanical model is established. The three-dimensional in situ stress distribution of the B oilfield is calculated by the finite element method. Meanwhile, the three-dimensional safe drilling window is also calculated. Based on the leak off test (LOT) data of well-drilled, the complex conditions in the drilling process, the drilling and completion data, the actual drilling conditions of the planned well B-10, the geomechanical model of in situ stress, and the safe drilling window are successfully verified. 收起