彰武断陷九佛堂组页岩油气潜力分析  

Shale oil and gas potential analysis of Jiufotang formation in Zhangwu fault depression

作　　者：徐浩[1,2] 解启来[3] 陈孔全[4] 张玺[4] 王嗣敏[5] 刘福春[4] 李忠博[4] 杨秀辉[4] 徐文[4] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]中国科学院大学,北京100049 [3]华南农业大学资源环境学院,广东广州510642 [4]中国石化东北油气分公司勘探开发研究院,吉林长春130062 [5]中国石油大学(北京)地球科学学院,北京102249

出　　处：《东北石油大学学报》2015年第3期94-103,6-7,共10页Journal of Northeast Petroleum University

基　　金：中国石化股份公司项目(YYYQ-ZP-12);国土资源部油气资源战略研究中心项目(2009QYXQ15-07-09);中国地质调查局项目(1212011220752)

摘　　要：松辽盆地南部彰武断陷九佛堂组发育大套半深湖—深湖相暗色泥页岩夹油页岩层.在岩心观察、薄片鉴定和扫描电镜分析基础上,结合泥页岩的分布、电性和地化特征、含油气性、储集和保存条件等,研究九佛堂组富有机质的暗色泥页岩的页岩油气资源潜力.结果表明：九佛堂组暗色泥页岩在测井曲线上具有＂三高一低＂的响应特征,纵向上厚度大,可识别上、下两段泥页岩层系,横向上展布较广;有机质丰度高,达到好的烃源岩标准,干酪根以Ⅰ型和Ⅱ1型为主,镜质体反射率（Ro）为0.54%~1.10%;泥页岩含油气性较好,晶间、粒间微孔隙和微裂缝较发育;脆性矿物平均质量分数高达51.4%,易于储层压裂改造.九佛堂组沉积后期构造活动较弱,有利于页岩油气的保存.运用概率体积法估算页岩油资源量为12 442.0×104 t.Jiufotang formation deposited a group of dark mudshale with intercalation of oil shale in semideep and deep lacustrine facies in Zhangwu fault depression,southern Songliao basin.On the basis of core observations,thin section identification and SEM analysis,combined with the mudshale distribution,electrical characteristics and geochemical characteristics,oil and gas bearing possibility,reservoir and sealing features to preliminarily studied the shale oil and gas potential resources of Jiufotang formation.The research showed that the dark and large thickness mudshale in Jiufotang formation had a 'three-high point and one-low point' logging response characteristics in logging curves,which can be used to distinguish out the upper and lower group of mudshale.Besides,the dark mudshale had a broad transverse distribution range;high abundance of organic matter which reached good hydrocarbon source rocks standard,the kerogen were typeⅠ and Ⅱ1,the vitrinite reflectance(Ro)ranged from 0.54% to1.10%;the mudshale had good oil and gas bearing possibility,intercrystalline micropores,intergranular micropores and microfractures were developed.Moreover,the average brittle mineral content was51.4%,which had a favorable trend for fracturing.There were rarely tectonic movements in the post sedimentary of Jiufotang formation,which created an advantageous preservation condition.Consequently,the shale oil potential resources was 12 442.0×104 t using the probability volumetric method,which indicated a great exploration potential.

关 键 词：彰武断陷 九佛堂组 泥页岩 页岩油气 有机质丰度 测井评价模型 

分 类 号：TE122.1[石油与天然气工程—油气勘探] P618.13[天文地球—矿床学]