柴达木盆地红沟子构造裂缝控制因素与定量模拟

Characteristics of fracture in Honggouzi structure of Qaidam Basin

目的探索红沟子构造地区的储层裂缝发育的控制因素与定量模拟方法。方法通过岩心分析、测井资料综合解释、构造应力场裂缝模拟和试井分析等手段,研究了红沟子构造地区的裂缝发育的控制因素与附加用深度、岩性条件约束的定量模拟方法。结果红沟子构造地区的构造裂缝发育程度与岩性及其组合、岩层厚度、所处的构造部位以及构造应力特征密切相关。结论裂缝发育控制因素系统分析是确保裂缝定量模拟精度的关键。

Aim To explore the major control factors of reservoir fracture and the methods of quantitative simulation in Honggouzi structure of Qaidam Basin. Methods The major control factors of reservoir fracture and the methods of quantitative simulation under depth and lithology have been studied by means of core analysis, well log interpre- tation, fracture numerical simulation of ten conic stress field and well test data. Results The degree of fracture de- velopment was controlled by lithology, thickness, different tectonic positions and characteristics of tectonic stress field. Conclusion Systematic study on the major control factors of reservoir fracture is the key to ensure the accuracy about fracture quantitative simulation.