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埕北低凸起地史上经历了印支、燕山、喜山三次大的构造运动,构造部位不同,其潜山残存地层和上覆下第三系地层变化都较大。根据圈闭成因和形态将油气藏分为①披覆背斜油气藏、②滚动背斜油气藏、③断层油气藏、④潜山油气藏、⑤岩性油气藏、⑥岩性-构造油气藏、⑦地层超覆油气藏七种类型。不同层位不同构造部位的油气来源不同,不同烃源岩区油气运移通道也不一样,低凸超可分为南部及埕北大断层下降盘、北部斜坡、东部埕北30潜山三个油气聚集区。通过分析,指出埕北30潜山西边沟谷东营组下部应是今后勘探的重要目标。
In the north, the low relief areas experienced three major tectonic movements in Indosinian, Yanshan and Himalayan mountains with different tectonic positions. The residual strata of the buried hill and the Tertiary strata under the overburden vary greatly. According to the causes and morphology of the traps, the reservoirs are divided into ① drape anticline reservoirs, ② anticline oil-gas reservoirs, ③ fault reservoirs, ④ buried hill reservoirs, ⑤ lithologic reservoirs, ⑥ lithologic-structural reservoirs , ⑦ strata overlying oil and gas reservoirs seven types. There are different sources of oil and gas in different layers of tectonic parts, hydrocarbon migration channels in different hydrocarbon source rocks are also different, low-convex super-high can be divided into the south and the northern Great fault decline plate, the northern slope, Enclave. Through the analysis, it is pointed out that the lower part of Dongying Formation in the western margin of Qiongbei 30 buried hill should be an important target for future exploration.