History matching and predicting GOR behavior with analytical functions
A Reservoir Engineering study was initiated in 1982 to examine gas production mechanisms in Prudhoe Bay. The results reported herein represent only a part of this effort. The paper mainly deals with developing analytical techniques for GOR prediction. Traditionally, a well's producing GOR is history matched and subsequently predicted by numerical reservoir simulation. A complementary approach is presented in this paper. The authors demonstrate how GOR history to date in gas underrunning and coning wells may be described by rate, time, and cumulative offtake dependent analytical functions. The coefficients in the equations are determined by a non-linear parametric least-squares regression approach. For each well, after an empirical GOR match is achieved, the analytical functions are used for short-term GOR forecasting as an integral part of a comprehensive Production Availability Forecast (PAF) model. The authors conclude that the parametric studies have produced viable analytical models for the matching and predicting of GOR in wells which have a history of high GOR.
- Research Organization:
- Sohio Petroleum Co.
- OSTI ID:
- 6869836
- Report Number(s):
- CONF-840495-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE 12763; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ACCURACY
ARCTIC OCEAN
BAYS
BEAUFORT SEA
COMPUTERIZED SIMULATION
ENGINEERING
FORECASTING
GEOLOGIC DEPOSITS
MATHEMATICAL MODELS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NATURAL GAS WELLS
OIL FIELDS
OIL WELLS
PETROLEUM DEPOSITS
PRODUCTION
PRUDHOE BAY
RESERVOIR ENGINEERING
RESOURCES
SEAS
SIMULATION
SURFACE WATERS
WELLS