大庆石油地质与开发2017，Vol.36Issue(6)：58-63,6.DOI:10.19597/J.ISSN.1000-3754.201701048
长岭断陷龙凤山次凹下白垩统油气成藏期
ACCUMULATION STAGES OF LOWER CRETACEOUS HYDROCARBON IN LONGFENGSHAN SUBSAG OF CHANGLING FAULT DEPRESSION
摘要
Abstract
In the light of Lower Cretaceous hydrocarbon series of the strata in Longfengshan Subsag,by means of the comprehensive method between the major hydrocarbon source rocks and reservoir fluid inclusions and so on,the period and time of the hydrocarbon accumulation were researched.The achievements show that Shahezi Formation source rocks reached the high-maturity stage and became the key generating period of the petroleum from Middle Quantou Formation to Early Nenjiang Formation depositional periods.The hydrocarbon inclusions can be divided into two periods:Period Ⅰ inclusions are characterized by irregular shapes and separated distribution with yellowyellow green fluorescences,the corresponding homogenized temperature is 90-100 ℃,the mass fraction of the salinity is 1％-2 ％,corresponding with the early stage of the hydrocarbon enrichment;Period Ⅱ inclusions are featured by pretty regular oval shapes and beaded or cluster distributions,showing yellow green-blue green fluorescences,the corresponding homogenized temperature is 125-135 ℃,the mass fraction of the salinity is 4％-6％,corresponding with the late stage of the hydrocarbon enrichment.The combined analysis among the hydrocarbon generating history of the source rocks,burial history and the homogenized temperature of the inclusions shows that the first period of the hydrocarbon accumulation was from Middle Denglouku to Late Denglouku Formation,and the second is from Late Quantou to Early Nenjiang Formation.关键词
长岭断陷/龙凤山次凹/热演化史/流体包裹体/成藏期Key words
Changling Fault Depression/Longfengshan Subsag/thermal evolution history/fluid inclusion/Oil and gas/hydrocarbon/petroleum accumulation period/stage分类
能源科技引用本文复制引用
赵鸿皓,蒋有录,张惠,朱建峰,刘景东..长岭断陷龙凤山次凹下白垩统油气成藏期[J].大庆石油地质与开发,2017,36(6):58-63,6.基金项目
中国石化股份有限公司科技项目“长岭龙凤山次凹成藏条件及有利勘探区带研究”(P14035). （P14035）
