Sensitivity of Single-Phase Flow in Low-Permeability Heterogeneous Reservoirs

CHENG Shi-qing; ZHANG Shen-zhong; HUANG Yan-zhang; ZHU Wei-yao

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Article Navigation > Applied Mathematics and Mechanics > 2002 > 23(6): 635-642

CHENG Shi-qing, ZHANG Shen-zhong, HUANG Yan-zhang, ZHU Wei-yao. Sensitivity of Single-Phase Flow in Low-Permeability Heterogeneous Reservoirs[J]. Applied Mathematics and Mechanics, 2002, 23(6): 635-642.

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Sensitivity of Single-Phase Flow in Low-Permeability Heterogeneous Reservoirs

1.
Faculty of Petroleum and Nature Gas, Petroleum University in Beijing, Changping, Beijing 102249, P R China;
2.
Institute of Porous Flow and Fluid Mechanics, Academia Sinica, Langfang, Hebei 065007, P R China

Received Date: 2001-05-08
Rev Recd Date: 2002-02-05
Publish Date: 2002-06-15

Abstract

Abstract

Theoretical equations for computing sensitivity coefficients of wellbore pressures to estimate the reservoir parameters in low-permeability reservoirs conditioning to non-Darcy flow data at low velocity were obtained.It is shown by a lot of numerical calculations that the wellbore pressures are much more sensitive to permeability very near the well than to permeability a few gridboocks away from the well.When an initial pressure gradient existant sensitivity coefficents in the region are closer to the active well than to the observation well.Sensitivity coefficients of observation well at the line between the active well and the observation well are influenced greatly by the initial pressure gradient.
- non-Darcy flow through porous media,
- permeability,
- porosity,
- sensitivity coefficient,
- inverse problem,
- low-permeability reservoir

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References(9)

References

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