东胜气田锦72井区山西组砂岩储层特征及分类评价
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摘要
依据粒度分析、岩石薄片、铸体薄片、毛细管压力曲线等分析化验资料,结合东胜气田锦72井区山西组沉积特征,对山西组砂岩储层特征开展研究及分类评价。结果表明:山西组储层砂岩以岩屑石英砂岩和石英砂岩为主,属于低孔-特低孔、特低渗-超低渗型储层;储层孔隙以粒间溶孔、填隙物内溶孔为主,原生粒间孔、粒内溶孔和裂缝较少;储层以中小孔喉为主。根据沉积微相、岩性、物性、孔隙类型及毛细管压力曲线将砂岩储层分为三类。
The study is on the sandstone reservoir characteristics and classification evaluation of Shanxi group by using laboratory analysis data, such as grain size analysis, thin sections,casting thin sections and capillary pressure curve together with the sedimentary characteristics of Shanxi group in J72 wellblock, Dongsheng gasfield. The results show that sandstone in Shanxi group member reservoir is dominated by lithic quartz sandstone and quartz sandstone with reservoir characters of low to ultra-low porosity and ultra-low to extreme-low permeability.Primary intergranular pores, intraglastic dissolution pores and fractures are few. Sandstone reservoirs are divided into three categories according to sedimentary microfacies,lithology, physical properties, pore types and capillary pressure curve.
The study is on the sandstone reservoir characteristics and classification evaluation of Shanxi group by using laboratory analysis data, such as grain size analysis, thin sections,casting thin sections and capillary pressure curve together with the sedimentary characteristics of Shanxi group in J72 wellblock, Dongsheng gasfield. The results show that sandstone in Shanxi group member reservoir is dominated by lithic quartz sandstone and quartz sandstone with reservoir characters of low to ultra-low porosity and ultra-low to extreme-low permeability.Primary intergranular pores, intraglastic dissolution pores and fractures are few. Sandstone reservoirs are divided into three categories according to sedimentary microfacies,lithology, physical properties, pore types and capillary pressure curve.
引文
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[3]徐文玺,李陵川.鄂尔多斯盆地东胜气田二叠系中统下石盒子组储层评价[J].天然气勘探与开发,2016,39(2):18-22.
[4]李良,袁志祥,惠宽洋,等.鄂尔多斯盆地北部上古生界天然气聚集规律[J].石油与天然气地质,2000,21(3):268-271.
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[7]兰俊.杭锦旗地区独贵加汗圈闭盒3段储层特征及评价[J].石油地质与工程,2016,30(3):5-8.
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[10]王周红,王东辉.东胜气田储层特征研究[J].天然气技术与经济,2014,8(5):9-13.
[11]张威,马超,齐荣.柳杨堡气田太2段致密砂岩储层特征及分类标准研究[J].石油地质与工程,2014,28(2):42-45.