this article begins on the next page F F JCPT92-05-01 ENHANCED OIL RECOVERY The East Swan Hills Unit waterflood optimization study: a multi-disciplinary ipfinary approach G. CZYZEWSKI, H.T. HORNFORD, P.C. MacLEAN and M.R. CARLSON ABSTRACT The East Swan Hills Unit @Vo. I is located on the eastern flank of the Swan Hills Beaverhill Lake "A " and "B " Pools. The reser-voir is now in an advanced stage of depletion like many of A lbertas oil mmrvoirs Optimization of a geologically complex reservoir, such as iy found in the Beaverhill Lake, @ a major undertaking and re-quires a multi-disciplinary approach. To evaluate waterflood per-formance a study consisting of petrophysical data reduction, geological mapping, spreadsheet analysis of recovery and reservol ' r simulation was carried out. This paper highlights three major con-tributions which were essential in the analysis.-]. The significance of geological nwpping which has identified layer-heterogeneity within the Swan Hills formation and the poten-tial in the underlying Slave Point formation. 2.Manual waterflood calculations have enhanced the understand-ing of the reservoir and conjirmed Slave Point production, prior to proceeding with numerical simulation. 3. T7ze methodology used to simulate a multilayer reservoir under waterflood is described.Incremental recovery is predicted by improved waterflooding in selected areas of the Unit. A program consisting of injection test-ing, production testing, single well tracers and selective cased hole logging has been designed, pnor to proceeding with field implemen-tation. Introduction T'he East Swan Hills Unit is located in the province of Alberta ap-proximately 200 km northwest of Edmonton as shown in Figure 1. This field was discovered in early 1963 with p@ production cormnencing in the saine year. Commingled production is derived p y from the Swan R& fon-nation as well as from the under-lying Slave Point formation. There are 76 wells in the Unit. The field was produced by p@@ fluid expamion drive since there was no gas cap or no acquifer support. Unitization occurred in 1967 for the purposes of waterflooding. Peak oil production of 19'9 M3/day occurred in 1969 after which ofl production declined at 20% per year. An aggressive workover program was initiated in 1984 to arrest the production decline. The program was successful as indicated by the ofl production rate which has remained flat over the last five years. The current ofl rate is 100 M3/day with a water cut of 90%. As the Unit was approaching its econo@c @t, it was con-cluded that a detailed reservoir engineering study should be carri-,,Ui out to dete@ne if improved waterflooding could be achieved. This paper documents the results of the study and the method-Keywords: East Swan Hill, Geological-petrophysical, Reservoir engineering, Numerical simulation. Paper reviewed and accepted for publication by the Editorial 18 ology used. The paper has been divided into three main sections: Geological -Petrophysical Studies, Conventional Reservoir En-gineering Review and Rese...
This paper won second place in the first annual Arthur Elfenbaum Essay Contest, sponsored by the American Society for Geriatric Dentistry.
SUMMARY Adequate intraoral illumination has remained one of the major obstacles in providing high‐quality care in nontraditional settings. After trying to adapt various light sources, we found that a portable fiberoptic light unit meets our criteria. An added benefit not initially considered is the ability to use the light to cure composite resin materials. The fiberoptic unit has been an excellent addition to our dental home care program.
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