Connection conditions for modeling fluid transport in a well system environment
AssigneeHalliburton Energy Services, Inc.
InventorsAvi Lin, Srinath Madasu
Life of this patent
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Abstract
In some aspects, flow path connection conditions are generated for a flow path intersection in a one-dimensional fluid flow model. The one-dimensional fluid flow model represents a flow of well system fluid in a well system environment. The flow path connection conditions conserve fluid momentum among three or more flow path branches that meet at the flow path intersection. Fluid flow is simulated in the fracture network by operating the one-dimensional fluid flow model based on the connection condition.
Claims26
A fluid flow modeling method comprising:
- generating, by operation of data processing apparatus, a flow path connection condition for a flow path intersection in a one-dimensional flow model, the one-dimensional flow model representing fluid flow in a subterranean region, the flow path connection condition conserving fluid momentum among three or more flow path branches that meet at the flow path intersection according to:
- Ai(Pi+ρUi2)=Aj(Pj+ρUj2)
- where ρ represents a density of the well system fluid, Ai and Aj represent respective flow cross-sections of branches i and j, Pi and Pj represent respective fluid pressures in branches i and j, and Ui and Uj represent respective fluid velocities in branches i and j;
- and
- simulating fluid flow in the subterranean region by operating the one-dimensional flow model based on the connection condition;
- wherein an injection treatment control system selects or modifies fluid pressures, fluid densities, fluid compositions, and other control parameters based on data provided by the simulated fluid flow.
A non-transitory computer-readable medium storing instructions that, when executed by data processing apparatus, perform operations comprising:
- generating a flow path connection condition for a flow path intersection in a one-dimensional flow model for well system fluid, the flow path connection condition conserving momentum of the well system fluid among three or more flow path branches that meet at the flow path intersection according to:
- Ai(Pi+ρUi2)=Aj(Pj+ρUj2)
- where ρ represents a density of the well system fluid, Ai and Aj represent respective flow cross-sections of branches i and j, Pi and Pj represent respective fluid pressures in branches i and j, and Ui and Uj represent respective fluid velocities in branches i and j;
- and
- simulating flow of the well system fluid by operating the one-dimensional flow model based on the connection condition;
- wherein an injection treatment control system selects or modifies fluid pressures, fluid densities, fluid compositions, and other control parameters based on data provided by the simulated fluid flow.
A fluid flow modeling system comprising one or more computers that include:
- a processor;
- and
- a memory, wherein the memory stores instructions for the processor which include application modules that comprise:
- a connection condition module which generates a flow path connection condition for a flow path intersection in a one-dimensional flow model for well system fluid, the flow path connection condition conserving fluid momentum among three or more flow path branches that meet at the flow path intersection according to:
- Ai (Pi+ρUi2=Aj(Pj+ρUj2) where ρ represents a density of the well system fluid, Ai and Aj represent respective flow cross-sections of branches i and j, Pi and Pj represent respective fluid pressures in branches i and j, and Ui and Uj represent respective fluid velocities in branches i and j;
- and
- a solver module which solves for a value of a fluid flow variable for a location on one or more of the flow path branches based on the connection condition;
- wherein:
- the connection condition and solver modules are either hardware or software modules;
- the one-dimensional flow model simulates flow of the well system fluid based on the connection condition;
- and
- an injection treatment control system selects or modifies fluid pressures, fluid densities, fluid compositions, and other control parameters based on data provided by the simulated fluid flow.
Dependencies are inferred from the claim text.