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SPE 092

Subsurface Characterization of the Edmonton-Area Acid-Gas Injection Operations

Acid gas dissolved in water in the Redwater oil field, and the resulting weak acidic solution ("sour" water) is injected into the depleted Leduc Formation Redwater reef trough 47 alternating wells. If only the natural setting is considered, ... Show Abstract

Bachu, S.  Buschkuehle, B.E.  Haug, K.  Michael, K.  2008-04-14

SPE 093

Subsurface Characterization of the Pembina-Wabamun Acid-Gas Injection Area

Subsurface Characterization of the Pembina-Wabamun Acid-Gas Injection Area If only the natural setting is considered, including geology and flow of formation waters, the basin to local-scale hydrogeological analysis indicates that injecting acid ... Show Abstract

Bachu, S.  Buschkuehle, B.E.  Haug, K.  Michael, K.  2008-04-14

SPE 095

Subsurface Characterization of the Brazeau Nisku Q Pool Reservoir for Acid Gas Injection

The experience gained since the start of the first acid-gas injection operation in Canada in 1989 shows that, from an engineering point of view, acid-gas disposal is a well-established technology. The operator has met all the current requirements ... Show Abstract

Bachu, S.  Buschkuehle, B.E.  Michael, K.  2008-04-14

ESR 2000-11

Suitability of the Alberta Subsurface for Carbon Dioxide Sequestration in Geological Media

Sequestration of anthropogenic CO2 in geological media is a potential solution to the release into the atmosphere of CO2, a greenhouse gas. Basically, there are five ways of sequestering CO2 in geological media: 1) through enhanced oil recovery ... Show Abstract

Bachu, S.  Brulotte, M.  Grobe, M.  Stewart, S.A.  2000-03-01

SPE 094

Stress Regime at Acid-Gas Injection Operations in Western Canada

Regulatory agencies in Western Canada impose safe limits on the injection pressure to maintain the pressure around the injection well below the fracturing threshold of the rocks. An evaluation of the stress regime at the acid-gas injection sites in ... Show Abstract

Bachu, S.  Haug, K.  Michael, K.  2008-04-14

BUL 060

Evaluation of effects of deep waste injection in the Cold Lake area, Alberta

The regional and local effects of underground injection of wastewater from in situ oil sands pilot plants have been evaluated at sites in the Cold Lake area, Alberta, using projected injection rates up to the year 2015. Geochemical effects were ... Show Abstract

Bachu, S.  Perkins, E.H.  Hitchon, B.  Lytviak, A.T.  Underschultz, J.R.  1989-01-01

BUL 058

Hydrogeology of the Swan Hills Area, Alberta: Evaluation for deep waste injection

A detailed hydrogeological study was carried out in a region defined as Tp 62-74 R 1-13 W5M, comprising 15 760 square km effectively centered on the Special Waste Injection Site of the Alberta Special Waste Management Corporation. The objective was ... Show Abstract

Hitchon, B.  Sauveplane, C.M.  Bachu, S.  Koster, E.H.  Lytviak, A.T.  1989-01-01

BUL 059

Hydrogeological and geothermal regimes in the Phanerozoic succession, Cold Lake area, Alberta and Saskatchewan

Abstract: The natural, steady-state fluid flow and geothermal regimes were determined for a region defined as Tp 50-70, R 15 W3M to R 17 W4M (60 000 km2), including the Cold Lake Oil Sand Deposit and adjacent heavy oil areas to the south. The study was based on information from 14 800 wells, 1858 analyses of formation waters, 2155 drillstem tests, 46 700 core analyses, and 19 218 bottomhole temperature measurements. Data processing was carried out using specially designed software developed by the Basin Analysis Group.Regional geology was synthesized in terms of definable stratigraphic successions, and individual, lithologically distinct stratigraphic units were characterized by structure contour and isopach maps. The fluid flow and geothermal regimes for individual aquifers, aquitards, and aquicludes were described using isopach, salinity distribution, potentiometric surface and temperature distribution maps, together with pressure-head as depth plots and hydraulic head cross sections. Based on this information the hydrostratigraphic units can be grouped into ten aquifers and aquifer systems (Lower Paleozoic, Winnipegosis, Beaverhill Lake, Camrose Tongue, Grosmont, Winterburn, McMurray, Clearwater, Mannville, and Viking), four aquitards and aquitard systems (Ireton, Clearwater, Joli Fou, and Colorado) and three aquicludes and aquiclude systems (Precambrian, Lower Devonian, and Prairie). Oil sand layers act as intermediate to weak aquitards, and lateral flow probably bypasses them.Lateral flow is dominantly regional to the northeast in aquifers in the Lower Paleozoic and Middle Devonian. In the McMurray and Clearwater aquifers lateral flow is of the intermediate type to the west and northwest under the influence of a drain effect by the underlying Grosmont aquifer system. Lateral flow in the Mannville aquifer is indeterminate, being intermediate to local, while lateral flow in the Viking aquifer (within the Colorado aquitard system) is also intermediate to local, and topographically controlled.Heat flow is mainly conductive, the convective component being negligible due to the low permeability of the rocks. The integral geothermal gradient is strongly dependent on the average thermal conductivity of the sedimentary column, which in turn depends on the Ethology of the strata. As a result, the integral geothermal gradient is highest in the areas with a thick section of Ireton shale and lowest in regions where halite is present without overlying Ireton shale.The synthesis of this vast amount of information on the natural fluid flow and geothermal regimes in the study area was carried out under a jointly funded contract between the Alberta Research Council and Alberta Environment in preparation for the evaluation of deep waste injection in the Cold Lake area. Place Keywords 73e 73l 73m 83h 83i alberta cold lake saskatchewan Theme Keywords aquifers geothermal hydrogeology phanerozoic

Hitchon, B.  Bachu, S.  Sauveplane, C.M.  Ing, A.  Lytviak, A.T.  1989-01-01

BUL 061

Regional-Scale Subsurface Hydrogeology in Northeast Alberta

The hydrogeological regime of formation waters in the Phanerozoic sedimentary succession was determined for a region defined as Tp 70-103 W4 Mer (55-58 degrees;N latitude and 110-114 degrees;W longitude) in northeast Alberta, covering most of the ... Show Abstract

Bachu, S.  Underschultz, J.R.  Hitchon, B.  Cotterill, D.K.  1993-01-01

BUL 062

Industrial Mineral Potential of Alberta Formation Waters

Nearly 130 000 analyses of formation waters from Alberta and adjacent areas were searched for contents of Ca, Mg, K, Br, I and Li exceeding specified regional exploration thresholds. The 5280 analyses meeting these criteria comprise the formation ... Show Abstract

Hitchon, B.  Bachu, S.  Underschultz, J.R.  Yuan, L.P.  1995-01-01