Transport behaviors of real gas mixture through nanopores of shale reservoir

被引:57
作者
Sun, Fengrui [1 ,2 ,3 ]
Yao, Yuedong [1 ,2 ,3 ]
Li, Guozhen [3 ]
Dong, Mingda [2 ,3 ]
机构
[1] China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
[2] China Univ Petr, Coll Petr Engn, Beijing 102249, Peoples R China
[3] China Univ Petr, Beijing 102249, Peoples R China
关键词
Shale gas reservoir; Nanopores; Real gas effect; Multi-component effect; Coupled model; Analytic equations; GEOTHERMAL-ENERGY EXTRACTION; KNUDSEN NUMBER; OIL TRANSPORT; FLOW; MODEL; CO2; DIFFUSION; PERMEABILITY; PERFORMANCE; SIMULATION;
D O I
10.1016/j.petrol.2018.12.058
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The modeling of shale gas transport through nanopores is the basis for shale gas production simulation. The real shale gas always consists of a series of gases, including ethane, propane and hydrogen sulfide etc. Previous models neglected the multi-component effect on the shale gas transport mechanisms. In this paper, a novel model is presented for simulating the real gas mixture transport through nanopores of shale formation. Firstly, a model is presented for ideal shale gas transport through nanopores considering the multi-component effect, then, the real gas effect is coupled into the model. Simulation results show that: (a) When it is under low pressure level condition, the conductivities of slippage flow and Knudsen diffusion increase with decreasing methane fraction. (b) When it is under medium pressure level condition, the conductivities of slippage flow and Knudsen diffusion increase with decreasing methane fraction. (c) Under high pressure condition, the conductivities of different flow patterns increase with decreasing methane fraction.
引用
收藏
页码:1134 / 1141
页数:8
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