摘要
通过岩心观察、薄片鉴定以及测井和录井资料分析,认为准噶尔盆地西北缘车拐地区三叠系储层主要为砾岩和砂岩,砾岩的储集空间主要为原生的粒间孔和次生的粒间溶孔,砂岩的储集空间主要为原生的粒间孔及次生的粒间溶孔和粒内溶孔。研究区三叠系储层总体上以中低孔、中低渗为主,百口泉组以Ⅱ类和Ⅳ类储层为主,克拉玛依组和白碱滩组则以Ⅱ类和Ⅲ类储层为主。由百口泉组→克拉玛依组→白碱滩组,储层物性先变好再变差,其中克拉玛依上亚组储层物性最好,是发育优质储层的有利层段。
Based on core observation,slice identification and logging data analysis,it is considered that the Triassic reservoirs in Cheguai area,northwestern margin of Junggar Basin,mainly developed conglomerate and sandstone.The accumulation spaces of conglomerate are mainly primary intergranular pores and secondary intergranular dissolved pores,and the accumulation spaces of sandstone are mainly primary intergranular pores and secondary intergranular dissolved pores and intragranular dissolved pores.The Triassic reservoirs in the study area are mainly of medium,low porosity and medium,low permeability in general.The Baikouquan Formation is mainly type Ⅱ and Ⅳ reservoir,and the Karamay Formation and Baijiantan Formation are mainly typeⅡ and Ⅲ reservoir.From the Baikouquan Formation to the Karamay Formation,Baijiantan Formation,the reservoir properties become better,and then become worse again.The reservoir property of upper sub,member of the Karamay Formation is the best,so it is the favorable member of high quality reservoir.
出处
《岩性油气藏》
CSCD
2012年第3期15-20,共6页
Lithologic Reservoirs
基金
国家重点基础研究发展规划"973"项目"中国西部叠合盆地深部有效碎屑岩储层成因机制与发育模式"(编号:2011CB201104)
国家科技重大专项"准噶尔盆地岩性-地层油气藏富集规律与目标评价"(编号:2008ZX05001-006)联合资助
关键词
储层特征
三叠系
车拐地区
准噶尔盆地西北缘
reservoir characteristics； Triassic； Cheguai area； northwestern margin of Junggar Basin
