摘要
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.
Volcanic reservoir spaces are very complicated and important to the migration and ac- cumulation of oil and gas. Taking the Carboniferous volcanic reservoir in Chepaizi area, west of Junggar basin for example, this paper investigated the types, combinations and effectiveness of VO canic reservoir spaces by core observation, thin section identification, and comprehensive a nalysis on imaging and conventional logging. Then, the hydrocarbon storage mode under the combined control of unconformity and faults was proposed. The results show that there are five kinds of combinations of volcanic reservoir spaces. Influenced by interconnection within the reservoir, as well as the configuration between porosity and permeability, the effectiveness of storage combination is ordered as pores-fractures-rugs, connectivity pores, fractures-pores, fractures and isolated pores, among which the isolated pores are not valid for reservoir storage. Accordingly, four special hydrocarbon storage modes, mesh-like, beaded-like, roots-like and crack surface were formed due to the oil migration along the tops of the Carboniferous uncon-formity surface into each kind of effective reservoir space combination, and finally the reservoir was formed along the sealing fault barrier.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2016年第3期582-590,共9页
Journal of China University of Mining & Technology
基金
国家科技重大专项(2011ZX05009-003)
关键词
车排子地区
石炭系
火山岩
储集空间组合
储油模式
Chepaizi area
Carboniferous
volcanic rock
combination of reservoir spaces
hy-drocarbon storage mode
