01314 Poromechanical response of fractured-porous rock masses

01314 Poromechanical response of fractured-porous rock masses

02 96/01292 0 mlzatlon of the hearth type furnace process for brown coal co r e production Ee%&$f. et al, Braunkohk Bergbautech., 1995, 47, (3). 26-31...

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02 96/01292 0 mlzatlon of the hearth type furnace process for brown coal co r e production Ee%&$f. et al, Braunkohk Bergbautech., 1995, 47, (3). 26-31. (In The o@nixation was directed on rolongation of aervicc life of the refrae by gentler o ration o the fumacc. averaging of the temperaof tern ’ 8” rature peaka. Arrangement of oil % se and avoi&e burners and’air supply were modifie and air m leakage was revented aa resulta of modelling tlow, concentration, and temperature 2 elds. It was suggested to heighten the furnace ceiling by approximately 1 m. 90lo1303 Preparation sasakl, M. (&signed JP.O7,157,769, Jun. 1995.

of coke for blast furnace to) Shinnippon Seitetsu KK, JAP


02 LIQUID FUELS Sources, Properties, Recovery 96lo1304 Abnormally-hlgh formation preaaurea In Azerbal an and the South Car Ian Basln as related to smectlts - II f Its transformations dur Png dlagenrs \ s and catagenesls) Buryakovsky, L. A. et al, J. Petroleum Science & Engng., Nov. 1995, 13, (3). 203-218. The paper highlights the problems related to the abnormal1 -high fonnation pressures in the oil and gas fields of Azerbaijan and the Houth Caspian Basin. The authors discuss the origin of abnormally-high formation pressure, diagenetic-catagenetic montomorillonite-illite transformation and hydrochemical factors. Gn the basis of new data, the sealin properties of argillaceous rocks (caprocks) and oil and gas potential o f the reservoir rocks at great depths are also discussed. 9#01305 Adsorptlon VII. Dynamic adsorptlon of a dual surfactant system onto reservoir cores at seswater sallnltles y[ec&L et al., J. Petroleum Science & Engng., Nov. 1995, 13, (3), - . The adsorption of dual surfactant s stem of the type nonylphenyl-d ethoxy-sulphonate (6EOS) and dodecy r-benzene-sulphonate (DDBS) in the mole ratio of 1:l is described. 96lO1306 Appllcatlon of petrographic Image analysis to the characterlzatlon of fluld-flow pathwa 8 In a hlghlycemented reservoir: Kane Field, Pennsylvania, Y .S.A. James, R. A J. Petroleum Science & Engng., Nov. 1995, 13, (3), 141-154. The Kane Field reservoir is a well-cemented Upper Devonian sandstone with an average porosity of 11%. The bulk of the wre soace occurs as microporosityh authigeidc clays. Des ite this appar&tly p&r quality, the reservoir oroduces oil under waterfloo s at commercial rates of UDto 17 b/d per well. ihe purpose of this paper is to explain this behavio& terms of the nature of the porous microstructure of the reservoir. 96lOI307 A pllcatlon of the d namlc Wllhelmy plate to Identifl:Ml~~ of sl Pppage at a Ilquld- 7Iquld-solld three-phase line of pgn;;a, A. et aL, J. Petroleum Science & Engng., Nov. 1995, 13, (3), - . The significance of reservoir wettability to many aspects of petroleum engineering is now well recognized. The behaviour of crude-oil/brine/solid three-phase contact lines is of fundamental importance to the mechanism of oil recovery by waterflooding. Commonly used methods of investigating this behaviour range from measurements of contact angles exhibited by reservoir fluids at representative mineral surfaces, to characterization of wetting behaviour by some form of displacement test that involves core samples. The Wilhelmy plate provides a direct method of measuring adhesion tension, (the product of interfacial tension, and contact angle), acting along the perimeter of the plate. QS/Oi 308 Concrete for the Congo Potter, N. Petroleum Review, Feb. 19%, 50, (589), 82-83. Reports on the completion of a 100,000 tonne concrete-hulled production barge for Elf’s Nkossa development, 60 kilmoetres off the coast of the Congo. There will be a period of six weeks for commissioning with the field due to come on-stream in May 1996, with plateau production of 120,000 b/d.

Liquid fuels (soums,



Dslayed gelatlon In corefloods uslng Cr(lll)os/ol2% malonate as a crossllnksr Stavland, A. and Nilsson, S. J. Petroleum Science & Engng., Nov. 1995, 13, (3), 247-258. Fl& ix rime& have been conducted using a hydrolyaed pol acrylamide or an acrylamide-AMPS copolymer crosslinked m -3: chromium w-r malonate. Retention of the chemicals prior to gelation has been studied at different temperaturea and injection rates. The retention of the polymer was independent of the crosslinker concentration. The two polymers gave different results; the acrylamide-AMPS copolymer showed very low retention; the HPAM gave quite high retention values. %/01310 Gravity se regatlon st the pors scale In corss under mlsclble and low Bnterfaclal tenslon conditions lncludlna In-sltu tomography trg; A. 0. et al., J. Petroleum Science & Engng., Dee. 1995, 14, (l), - . Gravity effects at the pore/core scale have been examined in two seta of experiments. The first used uniform&cd beadpacks and visual observations and the second core material and CT scanning. The uniform beadpacks were flooded with a fluid mixture which could be conditioned to form2 phases in situ. The interfacial tension and density difference were. controlled by varying the tern rature. Final segregation due to density difference, pore SIZ and inteIFaaal tension and thus a function of Bond Number, was studied. Bxperiments with the wetting and the non-wetting phase in the majority were included. 9gto1311 Hydrothermal alteratlon of bazhenlte to allphstlc hydrocarbons, carboxyllc acids and other oxygencontalnlng compounds (Letter) Rokosov, Y. V. et al., Fuel, Jan. 1996, 75, (2), 249-251. 96lO1312 Matrix-fracture transfer shape fscton for duslporosity simulators Lim, K. T. and A&, K. J. Petroleum Science & Engng., Nov. 1995,13, (3), 169-178. Matrix-fracture transfer shape factors for dual-porosity simulation of naturally-fractured reservoirs were derived by combining analytical solutions of pressure diffusion for various flow geometries. The resultin equations describing the matrix-fracture flow were cast in a form sirm*far to those proposed by Barenblatt et al. and Warren and Root, but without making the pseudo-steady state assumption. Shape factors representing one, two and three parallel sets of fractures were obtained. 96lO1313 A parametric lnvestlgatlon of the cyclic CO, InJsctlon process W&I& J. et al., J. Petroleum Science % Engng., Dec. 1995, 14, (l), The influences of important process and reservoir parameters on the cyclic C!I)din’ectio? process were inv+gate$ The parameters *examined ed gravity segregation, remsuung ml saturation, reservou clip, the presence of a gas cap, and the use of a drive gas. Experiments were perfomred in Berea Sandstone cores using a light crude oil from the Timbalier Bay field. 96101314 Poromechanlcal response of fractured-porous rock masses y.2 Iz et al., J. Petroleum Science & Engng., Nov. 1995, 13, (3), - . An analytical model based on a poromechanical formulation for dualporosity media is presented. In comparison with traditional conceptualixation such as by Bruenblatt et al. (1960). the proposed model contains both additional terms in the governing flow equations to provide a physically more realistic description of the change in storage, and a natural accommodation of body displacements. 96lO1315 Sodlum orthoslllcate: An effective addltlve for alkaIlne steamflood Mohanty, S. and Khataniar, S. J. Petroleum Science & Engng., Dec. 1995, 14, (1). . ,- 45-49. Steamflood performance often suffers from channelling and gravity segregation, resulting in poor sweep efficiency. Alkaline additives may bfi~g with steam for certain types of crude oils to improve steamflocd ante. In this oaoer. an exoerimental studv is oresented to evaruate theeffectiveness of- s&urn hydroxide, sodium -metasilicate and sodium orthosilicate for improving steamflood performance in the Wilmington Tar Zone CNdC oil. The experimental apparatus was designed to completely eliminate heat loss from the core so that the effects of the alkaline additvies on saturated steam, rather than on the condensed water, could be studied. The results show that sodium orthosilicate outperforms sodium hydroxide and sodium metasilicate in enhancing oil recovery by a stearntlood.

Fuel and Energy Abstracts

March 1996