On Integration of Geological Modeling and Engineering Design of Fractured Oil Reservoirs in Well Block Che21

doi:10.3969/j.issn.1006-6535.2021.05.004

Abstract

Abstract: To study the connection between artificial and natural fractures in the formation and the actual fracture distribution pattern in Well Block Che21, and to realize the economic and effective development of Carboniferous fractured oil reservoirs in Well Block Che21, an integrated research procedure from geological modeling to fracture simulation was developed on the basis of the idea of integrated geological engineering research and the establishment of a real 3D spatial model of the reservoir, taking into account the longitudinal lithologic distribution and the non-homogeneity of plane attribute distribution in the reservoir. The results showed that the real 3D geomechanical model could realistically characterize the mechanical properties of reservoir rocks, and the average minimum horizontal principal stresses of Wells CHHW2101 and CHHW2102 were 22.0 MPa and 26.0 MPa respectively, which are consistent with the downhole pressure 23.0 MPa and 27.0 MPa of the two wells after pump shutdown. The real 3D fracture simulation technology can evaluate the fracture simulation results more efficiently, accurately and directly, and judge the connectivity with natural fractures. The study results can provide theoretical and technical support for subsequent fractured wells in Well Block Che21, filling the gap of integrated fracturing in China.

Key words: geology-engineering integration, geological modeling, fractured oil reservoir, fracture morphology, heterogeneity, Well Block Che21

CLC Number:

TE355

He Li, Xiao Yang, Sun Yicheng, Liu Shouyu, Liu Li, Liu Zilong. On Integration of Geological Modeling and Engineering Design of Fractured Oil Reservoirs in Well Block Che21[J]. Special Oil & Gas Reservoirs, 2021, 28(5): 23-29.

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