阿尔金山前基岩气藏储层特征差异性研究  

Study on the Difference in Reservoir Characteristics of Bedrock Gas Reservoir in the Altun Piedmont

作　　者：苟迎春[1,2] 李延丽[1] 赵为永 刘应如[1] 柴小颖 秦九妹 GOU Yingchun;LI Yanli;ZHAO Weiyong;LIU Yingru;CHAI Xiaoying;QIN Jiumei(Northwest Branch of CNPC Research Institute for Exploration and Development,Lanzhou 730020,China;Key Laboratory of Reservoir Characterization,CNPC,Lanzhou 730020,China;Research Institute of Exploration and Development,Qinghai Oilfield,PetroChina,Dunhuang 736202,China;Qinghai Branch of CNPC Well Logging Co.,Ltd.,Dunhuang 736202,China)

机构地区：[1]中国石油勘探开发研究院西北分院,甘肃兰州730020 [2]中国石油天然气集团公司油藏描述重点实验室,甘肃兰州730020 [3]中国石油青海油田勘探开发研究院,甘肃敦煌736202 [4]中国石油集团测井有限公司青海分公司,甘肃敦煌736202

出　　处：《东华理工大学学报（自然科学版）》2023年第5期499-509,共11页Journal of East China University of Technology(Natural Science)

基　　金：国家科技重大专项(2016ZX05003-006);中国石油科技重大专项(2016E-01)。

摘　　要：为揭示柴达木盆地阿尔金山前基岩储层特征及其与天然气富集关系,综合岩芯描述、显微观察、X衍射和现代测井等资料,开展了基岩储层特征和测井识别研究。结果表明,阿尔金山前基岩储层岩性以花岗岩、花岗片麻岩和板岩为主,基岩岩性不同,储集空间类型各异。花岗岩、花岗片麻岩以高角度构造缝、溶蚀孔(缝)为主,花岗闪长岩、云英闪长岩以中-低角度构造缝、溶蚀孔(缝)为主,结晶灰岩、板岩以低角度构造缝为主。裂缝发育规模与天然气产量正相关,花岗片麻岩裂缝发育规模最大,天然气富集程度也最高,板岩裂缝规模最小,天然气富集程度也最低。In order to reveal the relationship between the reservoir characteristics and natural gas enrichment in the area of Altun mountains piedmont,Qaidam basin,the well logging identification and reservoir characteristics research were carried out based on core description,microscopic observation,X-ray diffraction and modern logging data.The results show that the bedrock reservoirs lithology are mainly granite,granite gneiss and slate.Reservoir space is different in types of bedrock.Granite and granite gneiss are dominated by dissolution pores and high-angle fractures.Granodiorite and dolomite diorite are dominated by dissolution pores and medium-low angle fractures.Crystalline limestone and slate are dominated by dissolution fractures and low-angle fractures.Fracture development scale is positively correlated with natural gas production.Granite gneiss is of the highest fracture scale and gas enrichment degree,while slate is of the lowest fracture scale and gas enrichment degree.

关 键 词：基岩气藏 储层特征 岩性测井识别 阿尔金山前 柴达木盆地 

分 类 号：P618.130.2[天文地球—矿床学]