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针对渤海湾盆地锦州南油田太古界变质岩潜山裂缝型油气藏的储层裂缝发育状况、分布规律的复杂性和多级性,以及较难开发的实际问题,为进一步研究古潜山岩性分布特征、储集空间分类及裂缝发育状况,综合运用岩心、录井、测井和地震等多学科资料,进行单井常规测井和成像资料的对比标定,对古潜山岩性进行识别,并根据储层成像测井响应特征,将储层自上而下分为残积带、风化壳、缝洞裂缝带、内幕斜交高角度裂缝带和致密结晶带,重点对储层裂缝发育区和裂缝发育方向进行描述和预测;进而建立了锦州南油田太古界变质岩潜山储层裂缝三维地质模型,落实了研究区储层裂缝发育状况及分布规律,提出高效合理的开发方案。实钻开发井表明,建立的潜山裂缝地质模型较好地预测了储层裂缝发育的有利部位。
In view of the complexity and multistage of the reservoir fractures in the fractured reservoirs of metamorphic rocks in the Archean in the Jinzhounan Oilfield, Bohai Bay Basin, as well as the practical problems that are more difficult to be exploited, Distribution characteristics, classification of reservoir space and development status of fractures. By comprehensively using multi-disciplinary data such as core, logging, logging and earthquakes, the single-well conventional logging and imaging data were compared and calibrated to identify the lithology of ancient buried hill, Based on the logging response characteristics of reservoir imaging, the reservoir is divided into top-down zone, residual zone, weathering crust, fracture zone, high-angle fracture zone and dense crystallization zone. Then, a 3D geological model of fractures of metamorphic rock buried hill in Archean in Jinzhou Nanyan Oilfield was established, and the development status and distribution of reservoir fractures in the study area were fulfilled. A high-efficient and reasonable development plan was put forward. Real drilling and development wells show that the established buried hill fractured geological model is a good predictor of favorable fractures in reservoir development.