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本区石炭、二叠系埋深1500—4600m,主要残留在断陷构造及古向斜中,分布面积3万多平方公里,总厚达1000m 以上。上石炭统太原组及下二叠统山西组为煤系,有机质丰度高,已成熟,是较好的油气源岩。石炭、二叠系可自成生储盖组合,又可从上覆下第三系中获得油气。从构造运动及热演化条件分析,主要生油气期为喜山期,次为燕山期。文安斜坡的油气远景较好,廊坊地区次之;冀南地区应以找气为主。
The Carboniferous and Permian in this area have a depth of 1500-4600m, mainly remaining in the fault-depression structure and palaeoclimatic direction with a distribution area of more than 30,000 square kilometers and a total thickness of over 1000m. The Upper Carboniferous Taiyuan Formation and the Lower Permian Shanxi Formation are coal measures. The organic matter abundance and maturity are good source rocks. Carboniferous and Permian can be self-forming reservoir-cap combination, but also from the overlying Tertiary get oil and gas. From the analysis of tectonic movement and thermal evolution conditions, the main hydrocarbon generation period is Himalayan period and the second is Yanshanian period. Wen’an slope of the better long-term oil and gas, followed by Langfang area; southern Hebei area should be mainly to find gas.