摘要
川中公山庙油田中侏罗统沙溪庙组一段属三角洲—湖泊相沉积,目前是公山庙油田主力产油层位之一。沙一段砂岩储层主要属于低孔低渗的裂缝—孔隙型,以残余粒间孔、粒内溶孔和粒间溶孔为主要孔隙类型;常见片状、管状喉道,孔喉连通较好,分选较差,具小孔细喉的结构组合特征;裂缝是主要渗滤通道之一。该套储层是在近200Ma的地质历史中,由沉积、成岩和构造作用相互影响、综合控制形成的最终产物。
Member 1 of Shaximiao Group, middle Jurassic in Gongshanmiao oilfield, Central Sichuan belongs to the delta and lacustrine deposit, which is one of the main pays in Gongshanmiao oilfield now. The sand reservoir of Member 1 of Shaximiao group basically belongs to fractured-porous type with low porosity and permeability. Its main pore types appear in intergranular residual pores, intragranular dissolved pores and intergranular dissolved pores. The throats usually appear in lamellar and tubular shapes. The connectivity of the pore throats is quite good but their sorting is fairly poor. The reservoir possesses the characteristics of jointing small pores and fine throats on structure. Fractures are the major flowing channels. The reservoir is the final product created by the interaction and integrative control of sedimentation, diagenesis and tectonism.
出处
《天然气勘探与开发》
2006年第1期10-16,23,共8页
Natural Gas Exploration and Development
基金
四川省重点学科建设项目(编号:SZD0414)
关键词
储集层特征
沉积作用
孔隙结构
构造作用
reservoir characteristics, sedimentation, pore structure, tectonism
