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任丘油田位于渤海湾盆地的冀中坳陷内。冀中坳陷地壳自太古代以来,在漫长的地质时期中,大体上经过了三个大的发展阶段。 1.前地槽及地槽发展阶段:在前震旦亚代(绝对年龄约36.7—17亿年),经过阜平、五台和中条运动,形成了本区的古老基底。据少数钻井资料,它为一套深变质的花岗片麻岩,与周边太行山等地对比,相当于太古代阜平群或桑干群。据其沉积建造特
Renqiu Oilfield is located in the Jizhong depression in the Bohai Bay Basin. Since the Archean, the crust of the Jizhong Depression has undergone three major stages of development during the long geological period. 1. Former Gnarls and Gnarls Developmental Stages: During the pre-Sinian Asia (with an absolute age of about 3.6-7-17 billion years), the ancient basement of this region was formed through the Fuping, Wutai and Zhongtia movements. According to a few drilling data, it is a deep metamorphic granite gneiss, compared with the surrounding Taihang Mountains and other places, equivalent to the Archean Fuping group or mulberry group. According to its deposition build special