【摘要】 采收率和波及系数是油田开发的重要指标。根据对我国陆上油田各项指标的统计与分析 ,评价了这些油田采收率与波及系数。注水纯砂岩油田的平均采收率为 0 .355 ,非注水纯砂油田的平均采收率为 0 .2 2 6 ;地质储量在30 0 0 0× 1 0 4t以上的巨型砂岩油田的采收率为 0 .44 ;就注水纯砂岩油田而言 ,地质储量大于 1 0 0 0 0× 1 0 4t的 ,其最大波及系数为 0 .70 8,地质储量在 1 0 0 0 0× 1 0 4～ 50 0 0× 1 0 4t的 ,其最大波及系数为 0 .558;最大波及系数大于 0 .9的油田有王场、尕斯库勒和杏树岗。更多还原

【Abstract】 The recovery factor and sweep efficiency are the important indexes. According to the statistics and analysis of each index of onshore oilfields in China, they have been evaluated. The average recovery factor of waterflooded sandstone oil fields is 0.355 and that of non-waterflooded sandstone oil fields’ is 0.226. Giant oil fields whose OOIP in each is more than 3×10 8t have 0.44 recovery factor. With regard to the waterflooded sandstone oil fields, the maximum sweep efficiency of the fields whose OOIP more than 1×10 8t is 0.708, the maximum sweep efficiency of the fields whose OOIP ranges from 0.5×10 8t to 1×10 8t is 0.558. The oilfields with maximum sweep efficiency more than 0.9 are Wangchang, Gasikule and Xingshugang.更多还原