TI-59 helps predict IPRs for gravel-packed gas wells
The inflow performance relationship (IPR) is an important tool for reservoir and production engineers. It helps optimize completion, tubing, gas lift, and storm choke design. It facilitates accurate rate predictions that can be used to evaluate field development decisions. The IPR is the first step of the systems analysis that translates reservoir rock and fluid parameters into predictable flow rates. Use of gravel packing for sand control complicates the calculation that predicts a well's IPR curve, particularly in gas wells where high velocities in the formation and through gravel-filled perforation tunnels can cause turbulent flow. The program presented in this article calculates the pressure drop and the flowing bottomhole pressures at varying flow rates for gravel-packed gas wells. The program was written for a Texas Instruments TI-59 programmable calculator with a PC-100 printer. Program features include: Calculations for in-casing gravel packs, open-hole gravel packs, or ungravel packed wells. Program prompts for the required data variables. Easy change of data values to run new cases. Calculates pressures for an unlimited number of flow rates. Results show the total pressure drop and the relative magnitude of its components.
- Research Organization:
- Superior Oil Co., The Woodlands, TX
- OSTI ID:
- 5066219
- Journal Information:
- Pet. Eng. Int.; (United States), Vol. 55:15
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NATURAL GAS WELLS
FLOW RATE
OFFSHORE DRILLING
PACKINGS
CALCULATORS
COMPUTER CALCULATIONS
COMPUTER CODES
DIAGRAMS
FORECASTING
GAS LIFTS
PERFORATION
PERFORMANCE
PRESSURE DROP
RESERVOIR PRESSURE
RESERVOIR ROCK
SAND
TUBES
TURBULENT FLOW
WELL COMPLETION
ARTIFICIAL LIFTS
DRILLING
FLUID FLOW
WELLS
030300* - Natural Gas- Drilling
Production
& Processing