Numerical simulation results in the Carthage Cotton Valley field
By coordinating three-dimensional reservoir simulations with pressure-transient tests, core analyses, open-hole and production logs, evaluations of tracer data during hydraulic fracturing, and geologic mapping, Champlin Petroleum obtained better predictions of the reserves and the long-term deliverability of the very tight (less than 0.1-md) Cotton Valley gas reservoir in east Texas. The simulation model that was developed proved capable of optimizing the well spacing and the fracture length. The final history match with the simulator indicated that the formation permeability of the very tight producing zones is substantially lower than suggested by conventional core analysis, 640-acre well spacing will not drain this reservoir efficiently in a reasonable time, and reserves are higher than presimulation estimates. Other results showed that even very long-term pressure buildups in this multilayer reservoir may not reach the straight line required in the conventional Horner pressure-transient analysis, type curves reflecting finite fracture flow capacity can be very useful, and pressure-drawdown analyses from well flow rates and flowing tubing pressure can provide good initial estimates of reservoir and fracture properties for detailed reservoir simulation without requiring expensive, long-term shut-ins of the well.
- Research Organization:
- Champlin Petroleum Co., Forth Worth, TX
- OSTI ID:
- 6337272
- Journal Information:
- J. Pet. Technol.; (United States), Vol. 34
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NATURAL GAS
RESERVES
NATURAL GAS WELLS
WELL SPACING
TEXAS
NATURAL GAS DEPOSITS
GEOLOGY
SIMULATION
ENERGY SOURCES
FEDERAL REGION VI
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
MINERAL RESOURCES
NORTH AMERICA
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WELLS
030100* - Natural Gas- Reserves- (-1989)