松辽盆地民东地区差异成藏及主控因素

发布时间：2018-11-21 14:28

【摘要】：民东地区是吉林油田低渗油藏效益储量提交的重点区块,成藏条件、成藏过程和成藏特征认识不充分。以新民油田350口开发井、民东地区82口探井、评价井和长春岭气田30口探井资料为基础,根据成藏条件评价和成藏过程解剖,揭示民东地区的油气差异成藏特征和主控因素,并进行现场实践。结果表明:新民、民东和长春岭地区油气来源具有差异性,造成沿江一带差异成藏;研究区成藏经历"沿源断裂垂向倒灌—沿断砂输导体侧向长距离运移—沿断裂垂向运移—构造脊圈闭聚集"的过程。断裂控制油气的运聚、成藏及分布,圈闭条件不足是造成油气过路的主因,它们与供烃条件共同耦合,造成新民、民东、长春岭地区在含油气程度上的差异。复查T29、T24老井试油及3处剩余出油点,对完善民东地区及沿江一带的成藏规律具有指导意义。
[Abstract]:Mindong area is the key block for the effective reserve submission of low permeability reservoir in Jilin oilfield. The reservoir forming conditions, the process of reservoir formation and the characteristics of reservoir formation are not well understood. Based on 350 development wells in Xinmin Oilfield, 82 exploration wells in Mindong area, 30 exploration wells in evaluation wells and 30 exploration wells in Changchun gas field, according to the reservoir forming conditions and the anatomy of reservoir forming process, the characteristics and main controlling factors of oil and gas differential reservoir formation in Mindong area are revealed. And carry on the field practice. The results show that the oil and gas sources of Xinmin, Mindong and Changchun Mountains are different, resulting in the formation of reservoirs along the Yangtze River. The reservoir formation in the study area experienced the process of "vertical backward irrigation along the source fault, lateral long distance migration along the fault sand transport conductor, vertical migration along the fault and accumulation of the tectonic ridge trap". Faults control the migration and accumulation of oil and gas, the accumulation and distribution of oil and gas, and the lack of trap conditions are the main causes of oil and gas crossing. They are coupled with hydrocarbon supply conditions together, resulting in the difference of oil and gas content in Xinmin, Mindong and Changchun Ridge areas. It is of guiding significance to perfect the law of reservoir formation in Mindong area and along the Yangtze River by reviewing the oil test of old well T29 and T24 and the remaining production points in 3 places.
【作者单位】：中国地质大学能源学院;新疆大学地矿学院;吉林油田分公司勘探开发研究院;
【基金】：国家科技重大专项(2011ZX05001-002) 中国石油科技专项(2013E-050203)
【分类号】：P618.13

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