Abstract
Wei AH platform is a platform composed of 8 horizontal wells in Weiyuan shale gas area. The number of faults in the area is small, and natural fractures are locally developed. Therefore, it is necessary to take volume reconstruction as the core mining technology and establish the geology-engineering integration model for the platform according to the geology-engineering integration concept. On the basis of geological model, combined with one-dimensional rock mechanics profile, the geomechanical model of Wei AH platform is established by means of deep diagenetic theory. Based on geological model and geomechanical model, the well trajectory design model, fracturing design model and reservoir numerical simulation model are modeled and optimized respectively. Finally, it can realize the comprehensive application of geophysical, geological, mechanical and seepage data, and complete the mutual call and matching of all kinds of understanding and models.
Highlights
Weiyuan Structure is located in the middle Sichuan gulong flat tectonic zone, Weiyuan to Longnvsi tectonic group [1]
Based on the geological model, combined with rock mechanics experimental analysis and dynamic rock mechanics parameter from logging, considering the influence of factors such as structure, faults and natural fractures, establishes three-dimensional geomechanics model to simulate the influence of deep reservoir diagenetic environment and three-dimensional stress
Combined with geological model and 3D geomechanical model, simulating the true 3D artificial fracture network based on 3D attribute cube, to establish the geology-engineering integration model of Wei AH platform, and provide theoretical basis and technical
Summary
Weiyuan Structure is located in the middle Sichuan gulong flat tectonic zone, Weiyuan to Longnvsi tectonic group [1]. The integration method of geology and engineering has guided the optimization and adjustment of the entire life cycle of shale gas reservoirs in southern Sichuan, effectively increased the production of single well and EUR, and supported the economic development of shale gas [7]. Based on the geological model, combined with rock mechanics experimental analysis and dynamic rock mechanics parameter from logging, considering the influence of factors such as structure, faults and natural fractures, establishes three-dimensional geomechanics model to simulate the influence of deep reservoir diagenetic environment and three-dimensional stress. Combined with geological model and 3D geomechanical model, simulating the true 3D artificial fracture network based on 3D attribute cube, to establish the geology-engineering integration model of Wei AH platform, and provide theoretical basis and technical. Brief geological introduction of Wei AH platform and establishment of geological model
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