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基于火山岩储集空间的复杂性及其在油气运聚过程中的重要性,以准西车排子地区石炭系火山岩油藏为例,采用岩心观察、薄片镜下鉴定、成像测井和常规测井资料综合分析的手段,研究了火山岩储集空间的类型、组合及有效性,提出了不整合和断层联合控制下的火山岩储油模式.研究结果表明:车排子地区石炭系火山岩储集空间组合有孔-缝-洞型、连通孔隙型、裂缝-孔隙型、裂缝型和孤立孔隙型5种;受储集空间的相互连通关系及其表现出的孔、渗相互配置状态影响,5种储集空间组合的有效性依次降低,其中孤立孔隙型为无效的储集空间组合;原油沿石炭系顶部不整合面运移至各类有效储集空间组合中,形成了网状、串珠状、树根状和缝面4种独特的储油形式,最终受断层遮挡聚集成藏.
Based on the complexity of volcanic reservoirs and their importance in hydrocarbon migration and accumulation, taking the Carboniferous volcanic reservoirs in Paizi area of Zhunxi, as an example, core observation, microscopic identification, imaging logging and conventional measurement The comprehensive analysis of well data to study the types, assemblages and availability of volcanic reservoirs, and put forward the unconformity and volcanic reservoir model under joint fault control.The results show that: Carboniferous volcanic reservoir space There are five kinds of combination of pore-seam-tunnel type, connected pore type, fracture-pore type, fracture type and isolated pore type. Depending on the interconnected relationship between reservoir space and the pore- The effectiveness of reservoir space combination decreases in turn, of which the isolated pore type is an ineffective reservoir space combination; crude oil migrates along the top unconformity of Carboniferous into various effective combination of reservoir space to form a network of beaded, beaded, Tree root and seam 4 kinds of unique oil storage form, eventually blocked by the fault aggregation accumulation.