潍北凹陷孔二段有效烃源岩再认识

潍北凹陷烃源岩类型丰富，不同类型烃源岩生烃潜力差别较大，但录井岩性与镜下观察存在较多偏差，有必要对其进行重新识别区分。通过对烃源岩取心样品的微观识别，将潍北凹陷孔二段烃源岩划分为灰质泥岩、油页岩和暗色泥岩三类，结合地化分析明确了不同种类烃源岩的生烃潜力，通过岩心标定测井，对各种烃源岩进行了测井识别区分，通过引入△logR模型对暗色泥岩中的有机碳总量进行计算，对有效烃源岩进行了识别，进而明确了优质烃源岩主要分布在盆地中北部，为选择勘探方向奠定了基础。

Recognition of Effective Hydrocarbon Source Rocks of Kong-2 Member of Konidian Formation in Weibei Sag

By microscopic identification of hydrocarbon source rock cores, hydrocarbon source rocks of the kong-2 member of konidian formation is divided into three types; calcareous mudstone, oil shale and dark mudstone. The paper makes clear the hydrocarbon-generating potential of the different hydrocarbon source rocks combined with geochemical analysis. Through demarcation of log facies with core data, the different hydrocarbon source rocks are identified by logging. Hydrocarbon source rocks in the dark mudstones was identified by introducing AlogR model. So the distribution of hydrocarbon-generating center is made clear, which lays the foundation for the selection of exploration direction.