松辽盆地双城断陷莺山凹陷天然气成藏期  

STUDY ON THE GAS RESERVOIR ACCUMULATION PERIOD FOR YINGSHAN SAG IN SHUANGCHENG FAULT DEPRESSION OF SONGLIAO BASIN

作　　者：李润琪[1] 张鑫璐[2] 邹育良[3] 

机构地区：[1]北京大学,北京100871 [2]中国石油大学地球科学学院,北京102249 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》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)

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.

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 

分 类 号：TE122.3[石油与天然气工程—油气勘探]