火山岩储层微观孔隙结构分类评价——以准噶尔盆地东部西泉地区石炭系火山岩为例

发布时间：2018-05-09 21:51

  本文选题：储集空间组合 + 孔隙结构　； 参考：《石油实验地质》2017年05期

【摘要】：基于准噶尔盆地西泉地区火山岩储层特征研究较薄弱的现象,通过25口井的岩心观察、铸体薄片、扫描电镜及高压压汞等分析,以产能大小为依据,将火山岩储层分为4类,对火山岩储集空间类型及组合、微观孔隙结构特征进行分类评价。根据研究区火山岩储层面孔率及优势储集空间组合关系:Ⅰ类为气孔+溶蚀扩大孔、溶蚀孔+裂缝型,Ⅱ类为气孔+构造缝(溶蚀缝)型,Ⅲ类为气孔+溶孔型,Ⅳ类为孤立小孔隙型,面孔率依次降低。火山岩储层不同类型微观孔隙结构特征表明:Ⅰ类储层发育大孔隙、粗喉道,为优势储集层;Ⅱ类和Ⅲ类储层发育大—中孔隙,中—细喉道,为较好到中—差储层;Ⅳ类储层发育小孔隙、细喉道,为致密储层。在此基础上,结合测井资料,建立了研究区火山岩储层分类评价标准。
[Abstract]:Based on the weak study of volcanic reservoir characteristics in Xiquan area, Junggar Basin, the volcanic reservoir is classified into 4 types by core observation, casting thin section, scanning electron microscope and high pressure mercury pressure analysis in 25 wells. The types and assemblages of volcanic reservoir space and the characteristics of microscopic pore structure are classified and evaluated. According to the relationship between the porosity of volcanic reservoir and the combination of dominant reservoir space in the study area, the types I are enlarged pore dissolution, the fracture type is solution pore, the second type is pore structure fracture (dissolution fracture), and the third type is pore dissolution. Type 鈪，

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