ISSN 1673-8217 CN 41-1388/TE
主管:中国石油化工集团有限公司 主办:中国石油化工股份有限公司河南油田分公司
赵丁丁, 孙卫, 雒斌, 吴育平, 李冠男. 2019: 致密砂岩气藏孔渗结构下限及对气水分布的影响——以苏里格气田苏48和苏120区块储层为例. 石油地质与工程, 33(03): 76-81.
引用本文: 赵丁丁, 孙卫, 雒斌, 吴育平, 李冠男. 2019: 致密砂岩气藏孔渗结构下限及对气水分布的影响——以苏里格气田苏48和苏120区块储层为例. 石油地质与工程, 33(03): 76-81.
ZHAO Dingding, SUN Wei, LUO Bin, WU Yuping, LI Guannan. 2019: Lower limit of porosity-permeability structure of tight sandstone gas reservoir and its influence on gas-water distribution——Taking Su 48 and Su 120 blocks in Sulige gas field as examples. Petroleum Geology and Engineering, 33(03): 76-81.
Citation: ZHAO Dingding, SUN Wei, LUO Bin, WU Yuping, LI Guannan. 2019: Lower limit of porosity-permeability structure of tight sandstone gas reservoir and its influence on gas-water distribution——Taking Su 48 and Su 120 blocks in Sulige gas field as examples. Petroleum Geology and Engineering, 33(03): 76-81.

致密砂岩气藏孔渗结构下限及对气水分布的影响——以苏里格气田苏48和苏120区块储层为例

Lower limit of porosity-permeability structure of tight sandstone gas reservoir and its influence on gas-water distribution——Taking Su 48 and Su 120 blocks in Sulige gas field as examples

  • 摘要: 苏里格气田是典型的致密砂岩气藏,其气水分布特征复杂,对产能的影响较大。应用铸体薄片、高压压汞、相渗等多种实验测试资料,分析了研究区的孔喉结构下限及对气水分布的影响。研究结果表明,苏48区块孔隙类型主要发育岩屑溶孔、粒间孔和晶间孔,苏120区块孔隙类型以岩屑溶孔、晶间孔为主;研究区气水的可动孔喉下限为0.003 8μm,水膜厚度为0.002μm,毛细管水影响的孔喉半径区间为0.003 8~0.050 0μm;气水分布特征在宏观上主要受岩性控制,在微观上受孔喉分布的影响;储层孔渗特征对气水分布的影响较为复杂。

     

    Abstract: Sulige gas field is a typical tight sandstone gas reservoir. The gas and water distribution characteristics are quite complicated, which have a great impact on productivity in the process of gas reservoir development. The lower limit of pore-throat structure and its influence on gas-water distribution in the study area were analyzed by using the experimental data of casting thin section, high pressure mercury injection and phase permeation. The results show that the fractured pores, intergranular pores and inter-crystalline pores of cuttings are mainly developed in Su 48 block. The pore types in Su120 block are mainly of karst and inter-crystalline. In the study area, the lower limit of movable hole throat is 0.0038μm,the thickness of water film is 0.002μm, and the pore throat radius range affected by capillary water is0.0038~0.0500μm. The characteristics of gas-water distribution are mainly controlled by lithology in macroscopic view, and affected by pore-throat distribution microscopically. The influence of reservoir porosity and permeability on gas-water distribution is complicated.

     

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