流路として機能しない空隙を導入した貯留層シミュレーションモデルによる 圧力・トレーサー濃度変化の理論的検討

研究成果: ジャーナルへの寄稿記事

抄録

The conventional reservoir simulation model has been extended. This extension is based on an assumption that the highly heterogeneous distribution of pores in reservoirs generates pores containing immobile fluids. The pores containing immobile fluids only allow the propagation of pressure change. The specific enthalpy and tracer concentrations in these pores are maintained at the initial values. Attaching the pores containing immobile fluids on the outside of the porous medium defined in the conventional model, we assume that the total pore volume increases by a factor of α . The changes in tracer concentrations are controlled by the porosity of the original porous medium ϕ, whereas that in pressure is controlled by α ϕ . Numerical experiments validate these dependencies of pressure and tracer concentrations. An effective procedure for matching the extended simulation model to field observations is discussed in terms of the abovementioned dependencies. A further extension is described by taking into account the thermal decay of multiple tracers.

元の言語Japanese
ページ(範囲)129-144
ページ数16
ジャーナルjournal of the geothermal research society of japan
40
発行部数2
DOI
出版物ステータス出版済み - 1 1 2018
外部発表Yes

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theoretical study
tracers
tracer
porosity
fluid
fluids
simulation
porous medium
enthalpy
experiment
propagation
decay

All Science Journal Classification (ASJC) codes

  • Geophysics

これを引用

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abstract = "The conventional reservoir simulation model has been extended. This extension is based on an assumption that the highly heterogeneous distribution of pores in reservoirs generates pores containing immobile fluids. The pores containing immobile fluids only allow the propagation of pressure change. The specific enthalpy and tracer concentrations in these pores are maintained at the initial values. Attaching the pores containing immobile fluids on the outside of the porous medium defined in the conventional model, we assume that the total pore volume increases by a factor of α . The changes in tracer concentrations are controlled by the porosity of the original porous medium ϕ, whereas that in pressure is controlled by α ϕ . Numerical experiments validate these dependencies of pressure and tracer concentrations. An effective procedure for matching the extended simulation model to field observations is discussed in terms of the abovementioned dependencies. A further extension is described by taking into account the thermal decay of multiple tracers.",
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