摘要
松辽盆地滨北地区经历了多次勘探,但是都没有取得实质性突破.烃源岩定性评价是判断研究区油气勘探潜力的关键.应用大量地化分析数据,对滨北地区烃源岩进行定性分析,认为研究区烃源岩有机质丰度高、类型好、成熟度较低.应用w(残留烃)/w(总有机碳)、w(残留烃)/w(生烃势)、w(氯仿沥青"A")/w(总有机碳)、w(总烃)/w(总有机碳)等地球化学指标对研究区生油门限进行研究,认为滨北地区主力烃源岩层的生油门限为1 600 m,比从前深了400 m.由于滨北地区烃源岩埋深相对较浅,这一认识必然会使生、排油量的计算值大幅度减少.相应地,区内的主要成烃期从嫩末推迟到明末以后.
After many rounds of exploration,no substantial breakthroughs have been achieved in Binbei area of Songliao Basin.Hydrocarbon Qualitative source rock evaluation is an important work for judge research area oil/gas exploration potential.Qualitative analysis of hydrocarbon source rock indicated that high abundance of organic matter,well type,low maturity.Oil generating threshold in this area has been studied by geochemical index about w(S1)/ w(TOC),w(S1)/w(S1+S2),chloroform asphalt content w(″A″)/ w(TOC),w(HC)/w(TOC) and so on.Considering oil generating threshold is 1 600 m in Binbei area of Songliao Basin,400 m deeper than predecessors.Due to hydrocarbon source rocks burial relatively shallower in Binbei area,this understanding must make considerable reduction the amount of hydrocarbon generating and expulsion.Correspondingly,the main source rock generated hydrocarbon has been postponed from the end of K1n sedimentation to the end of K1ms sedimentation.
出处
《大庆石油学院学报》
CAS
北大核心
2010年第4期7-11,44,共6页
Journal of Daqing Petroleum Institute
基金
黑龙江省普通高等学校新世纪优秀人才培养计划项目(1155-NCET-002)
关键词
滨北地区
烃源岩
岩性评价
生油门限
Binbei area
source rock
qualitative evaluation
oil generating threshold
