【摘要】 通过对浓江凹陷前参2井古近系地层层序充填特征和主要烃源岩生烃潜力研究发现,浓江凹陷古近系地层层序可划分为2个Ⅲ级层序5个体系域,主力烃源岩分布于层序Ⅰ(达连河组中下部)低水位体系域的泥岩,厚度稳定,有机质丰富,以Ⅱ1、Ⅱ2型干酪根为主,处于低成熟演化阶段。结合地震资料解释结果,预测出盆地的有效生油岩面积98km2,评价前参2井北部浓桥次凹是油气成藏的有利区。更多还原

【Abstract】 By studying the characteristics of paleogene sequence stratigraphic and main hydrocarbon source rock in Well Qiancan 2of Nongjiang Depression,Paleogene sequence stratigraphy can be divided into two 3rd Grade Sequences,including 5system tracts.The main source rock in the depression is a mud rock in sequence I(mid-lower Dalianhe Formation),with stable thickness and rich in organic and the matter type is TypeⅡ1and Ⅱ2basically at low maturity stage.Combined with the results of the seismic interpretation,the effective source rock area of the Basin is predicted as 98km2,and evaluation shows that Nongqiao Subdepression in the north of Well Qiancan 2is the favorable area of oil and gas.更多还原