濮城油田沙二上1油藏剩余油分布影响因素

Impact factors on remaining oil distribution of Upper Es ₂¹ reservoir in Pucheng Oilfield

徐卫东

Xu Weidong

中原油田分公司科技部，河南 濮阳457001

Department of Science and Technique, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China

濮城油田东区沙二上1油藏东部、北部被边水圈闭，西部、南部为岩性尖灭，属于构造-岩性油气藏，沉积主体主要为来自东北部无缘的末端扇沉积，含油砂体主体以末端扇的分流河道砂体和近水道漫溢砂体沉积为主。油藏内部构造复杂，含油区域多受断层封闭，但为一套油水系统。经过长期的注水开发，油藏内部油、水分布变得异常复杂，控制和影响剩余油分布的因素较多，应用油藏数值模拟技术，结合测井、沉积相等因素进行分析，确定了该油藏的剩余油分布规律和控制因素，指出了油藏调整挖潜的区域。

Upper Es21 reservoir is a tectonic-lithologic reservoir in the east region of Pucheng Oilfield, which is trapped by the edge water in the east and the north. And it belongs to the lithologic pinchout in the west and the south. It deposited mainly by the terminal fan that comes from the northeast. The distributary channel sands and the near channel flood sands are the main reservoir sandbodies. The internal structure of reservoir is very complicated. The oil areas are usually controlled by the faults
with a set of oil and water system. Through a long-term water injection, the oil-water distribution within the reservoir has
become extremely complicated. The remaining oil distribution is controlled by many factors. The controlling factors of remaining
oil distribution are confirmed through the use of reservoir simulation technology, combined with the analysis of logging data and
sedimentary facies, which finds out the adjustment and potential digging areas of the reservoirs in future.