A Reservoir Study of the Sturgeon Lake South D-3 Pool
- J.H. McKibbon (Hudson's Bay Oil & Gas Co. Ltd.) | D.S. Paxman (Hudson's Bay Oil & Gas Co. Ltd.) | D. Havlena (Hudson's Bay Oil & Gas Co. Ltd.)
- Document ID
- Petroleum Society of Canada
- Journal of Canadian Petroleum Technology
- Publication Date
- September 1963
- Document Type
- Journal Paper
- 142 - 150
- 1963. Petroleum Society of Canada
- 4.1.5 Processing Equipment, 5.8.7 Carbonate Reservoir, 2.1.1 Perforating, 1.6 Drilling Operations, 5.2.1 Phase Behavior and PVT Measurements, 4.1.2 Separation and Treating, 4.2 Pipelines, Flowlines and Risers, 5.2 Reservoir Fluid Dynamics
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This study illustrates the use of the expanded material balance to determinethe volume of oil originally in place and to define the aquifer system.
The expanded material balance, which incorporates an unsteady-state waterinflux term, contains two explicit and several implicit unknowns. The solutionof such a material balance is accomplished by algebraically rearranging theterms to define the equation of a straight line. Such a straight-line conceptis then used to define the various unknowns. Both linear and radial aquiferconfigurations are considered and the acceptability of the results arestatistically tested.
Due to the installation and subsequent extension of a gas gathering systemin the field, there have been two major changes in the field separatorpressure. These variations in separator pressure are accounted for in thecalculations.
The study concludes that the performance of the Sturgeon Lake South D-3pool, to date, has been consistent with a radial aquifer system which has notyet felt boundary effects. The volume of oil originally in place as determinedin this paper is in excellent agreement with the volumetric estimate.
The Sturgeon Lake South field is situated some 160 miles northwest of theCity of Edmonton. Alberta. The D-3 pool. the only productive horizon of anyconsequence in the field, was discovered in early 1953 with the drilling of thewell Amerada HB Union Crown "R" 5-19 (Lsd 5-19-69-22 W5). While sporadicdrilling in the field is continuing, development was substantially completed bythe end of 1957 when some 100 producing oil wells had been completed. There arecurrently 112 wells capable of oil production from this reservoir.
Several calculations have been performed in the past to establish avolumetric estimate of the original oil in place; however, due to limited wellcontrol in the southwestern part of the pool (see the attachedstructure-isopach map of Figure 1), and a controversy concerning theconnate water saturation, the volumetric estimates for this reservoir haveshown a wide variation in values. These differences in the volumetric estimatesprompted the present detailed investigation.
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