渤海湾盆地L油田群油源分析  

Oil source analysis of L Oilfield group in Bohai Bay Basin

作　　者：王海更 张宏友 王月杰 张博文 孟宪伟 WANG Haigeng;ZHANG Hongyou;WANG Yuejie;ZHANG Bowen;MENG Xianwei(CNOOC China Limited-Pengbo Operating Company,Tianjin 300459,China;Bohai Petroleum Research Institute,Tianjin Company of CNOOC China Limited,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司蓬勃作业公司,天津300459 [2]中海石油(中国)有限公司天津分公司渤海石油研究院,天津300459

出　　处：《复杂油气藏》2022年第4期7-11,共5页Complex Hydrocarbon Reservoirs

摘　　要：利用原油和壁心抽提物的色谱-质谱分析数据,在原油特征分析以及生物标志物油源对比的基础上,对渤海湾盆地L油田群的油源进行了系统研究,结果表明:L油田群原油主要来源于两个烃源岩层位、三个生烃凹陷,其中L1油田南部原油主要来自黄河口凹陷沙三段烃源岩,L1油田北部原油主要来源于油田东北侧渤东凹陷和庙西凹陷北洼的东营组烃源岩,L1油田中部及L2油田原油为渤东凹陷、庙西凹陷东营组烃源岩和黄河口凹陷沙三段烃源岩的混源油,而L3油田原油主要来源于油田东南侧庙西凹陷南洼的沙三段烃源岩。本文研究结果对油田开发和区域勘探具有一定的指导意义。Based on the comparison of crude oil characteristics and biomarker oil sources,the oil sources of L Oilfield group in the Bohai Bay Basin were systematically studied by using chromatography-mass spectrometry analysis data of crude oil and extracts of sidewall cores.The results show that the crude oil of L Oilfield group mainly comes from two hydrocarbon source rock layers and three hydrocarbon-producing depressions.The crude oil in the southern part of L1 Oilfield mainly comes from the Es3hydrocarbon source rocks of the Huanghekou Depression;the crude oil in the northern part of L1 Oilfield mainly comes from the hydrocarbon source rocks of the Dongying Formation in the Bohai East Depression and the North Depression of the Miaoxi Depression on the northeast side of the oilfield;the crude oil in the central part of L1 Oilfield and L2 Oilfield is a mixed source oil from hydrocarbon source rocks of the Dongying Formation in the Bohai East Depression and the Miaoxi Depression,and the Es3Formation in the Huanghekou Depression;the crude oil in L3 Oilfield mainly comes from the hydrocarbon source rocks of the Miaoxi Depression on the southeast side of the oilfield.The study results have a certain guiding significance for oilfield development and regional exploration.

关 键 词：油源对比 混源油 沙三段 东营组 生烃凹陷 

分 类 号：TE132[石油与天然气工程—油气勘探]