摘要
利用偏光显微镜、包裹体均一温度与显微激光拉曼光谱分析技术,结合盆地埋藏史和热史研究,认为莺山凹陷天然气藏的成藏时间为103.5～ 108.5 Ma,也即泉头组沉积时期;气藏在不同成岩阶段均以CH4充注为主,摩尔浓度达到96％ ～ 98％,含少量H2S和CO2等酸性气体,由于气藏成分变化不大,该气藏可能为原生气藏;成岩早期酸性气体的存在有利于储层孔隙的后期改造,可形成溶蚀孔和次生孔隙.
By means of polarization microscope, inclusion homogenization temperature and microscopic-laser Ra- man spectrum analyzing techniques, and moreover integrating with the burial history and thermal history studies, the gas reservoir accumulation time in Yingshan Sag is thought to be 103.5-108.5 Ma, i. e. Quantou Formation sedimentary period; In different diagenetic stages, the gas reservoir were mainly filled by CH4, the relative molar concentration was 96%-98% , there are a little acid gas, such as H2S and CO2. Because the components of the gas reservoir vary a little bit, so the gas reservoir may be primary gas pool; the acidic gases existed in the early pe- riod of the diagenesis are beneficial to the later reconstruction of the reservoir pores and fractures and moreover the dissolved pores and secondary pore-fractures can be formed.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2014年第2期27-30,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
国家重点基础研究发展计划(973)课题:火山岩油气藏分布规律与资源预测(编号2009CB219308)
关键词
松辽盆地
莺山凹陷
成藏期
包裹体
均一温度分析
显微激光拉曼光谱
Songliao Basin
Yingshan Sag
reservoir accumulation period
inclusion
homogenization temperatureanalysis
microscopic-laser Raman spectrum
