延长油田长7页岩油产建有利区预测方法研究

Study on favorable area prediction for Chang 7 shale reservoir productivity construction in Yanchang oilfield

长7页岩油藏的开发已成为延长油田的热点。在已经探明储量的区域,产能建设次序关系着是否能高效开发。本文通过结合延长油田潜力区分级标准、类比甜点预测,采用层次分析法预测产建有利区,优化规模开发次序。对志丹油田小庄科区的产建有利区预测结果表明,应优先开发长711-1层Ⅰ类产建有利区,其他区域层位作为接替资源。基于层次分析法的“八参数”长7页岩油产建有利区预测方法,可快速识别产建有利区类别,制定产能建设次序,有较强实用性。

Development of Chang 7 shale reservoir has become a hot spot in Yanchang oilfield.In the area with proved reserves,the productivity construction sequence is related to whether it can be developed efficiently.In this paper,combined with the classification standard of potential areas in Yanchang oilfield and the assessment methods for sweet spots,the analytic hierarchy process is used to predict the favorable areas of productivity construction and optimize the sequence.The prediction results of the favorable area prediction in Xiaozhuangke block of Zhidan oilfield show that priority should be given to the development of classⅠfavorable areas in Chang 711-1 layer,and other regional or layers as replacement.The"eight parameter"prediction method for Chang 7 shale oil favorable areas based on the analytic hierarchy process can quickly identify the types of favorable areas for formulating productivity construction sequence,which is highly practical.