西藏洞错盆地丁青湖组储层岩石学特征及储集类型  

Lithology characteristics and reservoir types of Dingqinghu reservoir formations in Tibet Dongcuo basin

作　　者：胡承飞 史建南[1] 普玉浩 杨一珉 陶刚[1] Hu Chengfei;Shi Jiannan;Pu Yuhao;Yang Yimin;Tao Gang(Chengdu University of Technology,Chengdu 610051,China;Panzhihua Water Affairs Bareau,Panzhihua 617000,China)

机构地区：[1]成都理工大学,四川成都610051 [2]攀枝花市水务局,四川攀枝花617000

出　　处：《石化技术》2017年第5期120-120,109,共2页Petrochemical Industry Technology

摘　　要：洞错盆地位于西藏中部,为古近-新近纪陆相盆地,主要发育新近系古近系丁青湖组和康托组。对盆地内丁青湖组地层、沉积相和储集岩等分析后认为:丁青湖组地层岩性具有湖相碎屑岩和湖相碳酸盐岩混积特征;发育孔隙度较高的储集岩,孔隙度最高可达20%以上;储集类型可分为孔隙型和裂缝型,其中溶蚀作用为储层的主要建设作用。据此,可以认为西藏洞错盆地丁青湖组地层具备良好的储层条件。Dongcuo basin located in the middle of Tibet belongs to the Paleogene-Neogene continental basin,and Dingqinghu formations and Kangtuo formations are the main development area.The results after the analysis of Dingqinghu formations,sedimentary facies and reservoir rocks show that the lithology of Dingqinghu formations is the mixed characteric of the lacustrine clastic rock and strine carbonate rock,and the porosity is up to more than20%in the reservoir rocks with higher porosity development.Also,the reservoir type can be divided into pore type and fracture type,of them,dissolution plays the main construction role for the formation.Hereby,the Dingqingzu reservoir formations have an excellent reservoir conditions in the Dongcuo basin of Tibet.

关 键 词：洞错盆地 丁青湖组储层 储集类型 

分 类 号：P618.13[天文地球—矿床学]