论文部分内容阅读
烃源岩控制着油藏的分布,寻找姬源—陇东地区三叠系延长组长7段优质油藏,需明确优质烃源岩的品质与分布。运用深感应与英制声波时差重叠图法可对研究区烃源岩进行有效识别。通过实测TOC数据分区建立基于测井数据的TOC计算公式,并利用该计算公式对其它井位进行TOC值计算。依据TOC值对烃源岩进行分类:TOC>10,为优质烃源岩;10>TOC>6,为中等烃源岩;6>TOC>2,为差等烃源。深湖平原与间湾控制着烃源岩的平面分布,优质烃源岩常发育于深湖平原,厚层优质烃源岩发育地区成为致密油藏勘探的重点地带。
The source rocks control the distribution of the reservoirs. Looking for the high-quality reservoirs of Chang 7 Member of Triassic Yanchang Formation in Jiyuan-Longdong area, it is necessary to know the quality and distribution of high-quality source rocks. The source rock of the study area can be effectively identified by using the overlay method of deep sense and imperial sound wave time difference. The TOC calculation formula based on well logging data is established through the measured TOC data partitioning, and the TOC value is calculated for other well positions by using the calculation formula. According to the TOC value, the source rocks are classified: TOC> 10, high-quality source rocks, 10> TOC> 6, medium-source rocks and 6> TOC> 2, which are poor hydrocarbon sources. The deep lake plain and bay control the plane distribution of source rocks. High-quality source rocks often develop in the deep lake plain, and the thick source rock development areas become the focus areas for the exploration of tight reservoirs.