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断裂是控制克拉玛依油田八区下乌尔禾组砂砾岩油藏裂缝发育的重要因素。根据岩心观察、薄片鉴定和成像测井资料分析,将裂缝分为三大类型,即成岩裂缝、构造裂缝和溶蚀缝洞,构造缝又分为微裂缝、斜交缝、直劈缝和网状缝,八区下乌尔禾组油藏以直劈缝为主。根据不同类型裂缝的成像特征,标定出常规曲线的响应特征,总结出不同类型裂缝对应的不同测井响应规律,建立了定性识别砂砾岩储层裂缝的模式。根据这一模式,以T85006井为例,用成像测井裂缝解释结果验证了模糊识别方法的合理性,并对全区所有井的裂缝进行解释。应用生产动态资料对解释结果进行了评价,说明目前开发中遇到的水淹和水窜问题受裂缝发育影响比较大。
Faults are important factors controlling the fracture development of glutenite reservoirs in Lower Wuerhe Formation in Karamay Oilfield. According to the analysis of core observation, sheet identification and imaging logging data, the fractures are divided into three types: diagenetic fractures, structural fractures and dissolution fractures. The structural fractures are divided into micro-fractures, oblique fractures, straight fractures and reticular In the eight districts, the Wuerhe Formation reservoir is mainly split straight. According to the imaging characteristics of different types of fractures, the response characteristics of conventional curves were calibrated, and different logging response laws corresponding to different types of fractures were summarized. A qualitative identification model of fractures of glutenite reservoirs was established. According to this model, taking Well T85006 as an example, the rationality of the fuzzy identification method is verified by interpretation of imaging logging fractures and the fractures of all the wells in the region are explained. The application of production data to evaluate the interpretation of the results, indicating that the current development encountered in the water flooding and water channeling problems affected by the crack development is relatively large.