Analytical well models for reservoir simulation
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5499806
The computation of flowing well bottom-hole pressure from the pressure of the block containing the well, or the computation of well flow rate when the flowing bottom-hole well pressure is specified, are important considerations in reservoir simulation. In this paper an analytical method is presented for computing the well block factors (constants of the productivity index) for a well located anywhere in a square or rectangular (aspect ratio between 1/2 and 2) block. Equations for well geometric factors and well fraction constants are given for grid blocks of various types, containing a single well, encountered in reservoir simulation studies. The equations given in this paper can be used for both block-centered and point-distributed grids in five and nine-point (two-dimensional) finite difference formulations. The radial flow assumption utilized in deriving the equations in this paper is not always strictly valid, however, for most practical situations it provides an adequate approximation for near well flow.
- Research Organization:
- UPM
- OSTI ID:
- 5499806
- Report Number(s):
- CONF-830312-
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE 11719
- Country of Publication:
- United States
- Language:
- English
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