Effect of perforation interval design on gas production from hydrate reservoir

被引:2
作者
Pandey, Pawan Kumar [1 ]
Das, Malay Kumar [1 ]
Panigrahi, Pradipta Kumar [1 ]
机构
[1] Indian Inst Technol Kanpur, Dept Mech Engn, Kanpur 208016, Uttar Pradesh, India
关键词
Hydrates; Depressurization; Reservoir; Gas production; Perforation interval; METHANE HYDRATE; NUMERICAL-SIMULATION; DEPRESSURIZATION; SEA;
D O I
10.1016/j.tsep.2023.101986
中图分类号
O414.1 [热力学];
学科分类号
摘要
In this work, we study the effect of perforation interval (PI) design in the well on reservoir depressurization and gas production. Depressurization of a homogeneous reservoir and corresponding gas production is simulated for a duration of 200 days. We investigate the effect of PI design by varying its length, position, and number. In simulations, the reservoir is modeled as a 2-D homogeneous porous media domain. We use a foam-extend based solver for the simulations. The solution strategy of the solver is based on implicit pressure and explicit saturation method. Results suggest that larger PI length lead to higher gas production. However, the positioning of the PI is also important; and a single PI at the center of the hydrate-bearing layer (HBL) gives higher gas production than PI that is offset from the center. We also find that instead of a single PI, use of multiple PIs (with total PI length kept same) give better performance in terms of gas production. If everything else is kept same in a homogeneous reservoir, well with multiple PI yields larger gas production than well with single PI. Through analysis, we show that the reason behind this behavior is larger region undergoing depressurization and dissociation in cases with multiple PIs.
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页数:11
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