摘要
三叠系延长组长2油层组为子长油田的主力生产层,其储集砂体受控于沉积相带的展布。通过大量岩心铸体薄片及物性等资料统计分析,对子长油田长2油层组储层岩石学、物性等特征及孔隙类型和结构进行了研究。研究表明,子长油田长2油层组储层主要发育辫状河流相沉积,以砂岩沉积为主体,具有多期河道叠加发育特点;其河道发育,砂体十分发育,单砂体厚度大,连续性好;发育多种孔隙类型,其中粒间溶孔最为发育,储层物性一般,属于低孔-低渗储层,且储层的非均质性较强。
The Chang 2 member of Triassic Yanchang Formation in Zichang Oilfield is the main production layer.Its reservoir sand bodies are controlled by the sedimentary facies distribution.Through a statistical analysis of large number of core cast thin slices and physical property et al,the reservoir petrology,physical property characteristics,pore type and structure are researched in this area.The results show that Chang 2 reservoir developes the major braided fluvial deposition in the study area,there's mainly sandstone deposition with a multi-phase channel superimposed developmental characteristics,The river ard,sand bodies are developed well,single sand body has great thickness,and good continuity;Developed a variety of pore types,intergranular dissolved poreare.Reservoir property is medium,belongs to a low-hole-hypotonic super low porosity-ultra-low permeability reservoir with strong heterogeneity.
出处
《长江大学学报（自科版）（中旬）》
CAS
2013年第3期29-30,5,共2页
Journal of Yangtze University(Nature Science Edition)
关键词
鄂尔多斯盆地
延长组
沉积特征
储层特征
Ordos Basin
Yanchang Formation
sedimentation features
reservoir characteristics
