摘要
针对志丹油田正356井区长6油层段,对其储层岩石学、储层物性、孔隙结构及储层控制因素等进行了研究。该层段储层岩石类型主要为岩屑长石砂岩和长石砂岩,成分成熟度低,结构成熟度高;岩石物性总体较差,属低孔、低渗储层,发育粒间孔隙、溶蚀孔隙、晶间孔等孔隙类型,喉道以细喉-微喉为主;沉积作用发生后,成岩作用控制着储层孔隙结构特征及储层物性。根据岩性和物性特征,该区储集岩分为3类:Ⅰ类为好储集层,Ⅱ类为较好储集层,Ⅲ类为较差储集层。
The oil layer Chang 6 is the uppermost one in the Zheng 356 well area of Zhidan oil field. The characteristics of reservoir strata were studied on the basis of petrological and physical features as texture of porosity and controlling features of reservoir strata. It was shown that the rock types of the reservoir are lithic arkose and arkose, Which are characterized by low composition maturity and high textural maturity. The physical properties of the rock are relatively poor, belonging to low porosity and low permeability. There developed intergranular pore, solution pore and intercrystal pore. The main throat types are predominated by medium-fine throat and fine throat. After sedimentation, the diagenesis controlled the physical and texture of porosity. Base on the lithology and physical properties the reservoir strata can be divided into 3 types including Ⅰ （better）, Ⅱ （good） and Ⅲ poor.
出处
《世界地质》
CAS
CSCD
2007年第4期453-458,共6页
World Geology
基金
延长油田股份有限公司资助项目
关键词
志丹油田
三叠系
长6油层
孔隙结构
储层特征
Zhidan oil field
Triassic
Chang 6 oil layer
pore texture
reservoir characteristic
