Construction of three-dimensional geological models for oil sands reservoirs in Athabasca, Canada

Experimental study on deformation and permeability enhancement of oil sand reservoir by hydraulic fracturing technique under true triaxial stress

“…In order to verify the applicability of the proposed breakdown pressure prediction model, the Poisson's ratio v of the oil sands was measured to be 0.42, and the effective stress coefficient of permeability γ and azimuth angle θ was set to be 0.15 and 15° taking the trial-and-error method, respectively. The breakdown pressure of the oil sands under different intermediate principal stresses can be calculated by bringing the stress state shown in Figure 7A into Equation (10), and the calculated breakdown pressure is compared with the breakdown pressure obtained from the experiment (Figure 9), as shown…”

“…Scott and Seto 9 performed laboratory measurements of thermal conductivity and thermal diffusion coefficients of oil sand samples to predict the actual conditions of in situ thermal stimulation. Takahashi et al 10 developed a 3D geological model of the Athabasca oil sand area in Canada based on logging and seismic data, which provides a basis for the later deployment design and production prediction of heavy oil recovery. Qiao et al 11 studied the physical and mechanical properties and microscopic composition of the oil sands of Fengcheng, Xinjiang, and found that the oil sands in Fengcheng are mainly composed of asphalt, quartz, and dickite and generally contain intercalated layers.…”