涟源凹陷龙潭组页岩气储层特征分析  

Shale Gas Reservoir Characteristics of Longtan Formation in Lianyuan Depression

作　　者：张成龙[1] 唐书恒[1] 范二平[1] 王善博[2] 孙昌花 孙九江 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]天津地质调查中心,天津300170 [3]中石油天然气股份有限公司山西煤层气勘探开发分公司,山西晋城048000

出　　处：《石油天然气学报》2014年第5期32-36,4,共5页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(41272176);教育部博士点基金项目(20110022110007)

摘　　要：通过总有机碳、热解分析、镜质体反射率等试验测定,结合岩心观察、镜下观察、扫描电镜、压汞试验及低温氮吸附试验等多种方法,从宏观裂隙、微观裂隙、微观孔隙3种尺度,定性、半定量、定量3种层次研究了涟源凹陷龙潭组泥页岩的孔裂隙发育特征及储集性能。研究结果表明:研究区龙潭组下段有效烃源岩的分布主要集中在涟源-双峰地区,由东向西逐渐减薄;干酪根主要为Ⅱ1型(腐殖-腐泥型);镜质体反射率普遍较高,处于高成熟阶段;泥页岩节理和孔裂隙较为发育,黏土矿物含量较高,吸附能力较强。By detecting the total organic content,pyrolysis analysis and reflectance of vitrinite in combination with core observation,microscope observation,scanning electron microscope,mercury injection test and nitrogen adsorption experiment,the pore fracture characteristics of shale and reservoir performance in Longtan Formation were studied qualitatively,quantitatively and semi-quantitatively from the aspects of macroscopic,microscopic fractures and microscopic pores. The study result shows the effective source rocks of lower Longtan Formation are mainly distributed in Lianyuan-Shuangfeng Area,they are gradually thinning from the east to the west. Types of kerogen there are mainly Type Ⅱ1( humic-sapropelic type). Rois generally high,it indicates that the source rocks are at the high maturity stage. The mud-shale joint and porosity are well developed and the content of clay mineral is higher with high adsorption ability.

关 键 词：涟源凹陷 龙潭组 页岩气 地球化学特征 储层特征 

分 类 号：P618.13[天文地球—矿床学]