Sedimentology and hydrocarbon habitat of the submarine-fan deposits of the Central Carpathian Paleogene Basin (NE Slovakia)

02 Liquid fuels (sources, properties, for the source rock, which could correspond to the Eocene Carbonate formation with type-11 organic matter. A possible additional input of gas from the Sambar formation is suggested as feasible. The link between the fluid inclusion data and the geodynamic evolution lead US to propose a circulation of basinal fluids driven mainly by the fault system during dewatering in the foredeep. In Pakistan, they are coeval to major compressional NW-SE Oligocene episode in the thrust belt. The origin of the fluorine may be found in the basin sediments as well as near the basement. The brines orginated in salt structures recognized in eocambrian at the decollement level, the source rock was already mature. 02/00805 Improved K-values correlation for UAE crude oil componets at low pressures using PVT laboratory data Almehaideb, R.A. er (I/. Fuel, 2001, 80, (I), 117-124. Several techniques are available in the literature to estimate the Kvalues. In this paper, results of PVT analysis for 22 crude oil samples from different reservoirs in UAE are used. Sixty-eight single-stage flash laboratory experiments were conducted for these samples. Material balance techniques were used to extract the K-values of crude oil components. These K-values were then correlated and compared with values obtained from published correlations. Comparisons show that current correlations, while they generally give good results for light hydrocarbons in addition to carbon dioxide and hydrogen sulphide, gas widely different results for nitrogen and the heptane-plus pseudocomponent. Average absolute deviations in excess of 1000% were observed for nitrogen and in excess of 500% were observed for heptane-plus when current methods were used. The proposed new correlation improves significantly the average absolute deviation for both the heptane-plus fraction and for nitrogen, in addition to improving relatively the average absolute deviation for the Cl-Cb hydrocarbons, H2S, and CO?. The average absolute deviation for all components was reduced to 28.6”/u in the new correlation compared to 240% for the Standing correlation and 156.8”/u for the Wilson correlation. As a test for reliability of the new correlation, bubble point pressures were calculated for IO samples. The average absolute error for the proposed correlation was 5.2% compared with 6.9% for the Standing correlation. 16.1% for the Wilson correlation, and 7.3O/~ for the Peng-Robinson equation of state. 02lOO806 IR study of adsorption and decomposition of propan-2-01 on carbon and carbon-supported catalysts Zawadzki, J. e/ rrl. Carbon, 2001, 39, (2) 187-192. The aim of this research is to get information on the character of the interactions between propan-2-01 on the one hand and carbons which differs in the chemical structure of their surfaces or carbon-supported metal catalysts (Pt, Ag, Cu. Ni) on the other hand. The adsorption and decomposition of propan-2-01 were investigated with in .s~rr infrared spectroscopy. Parallel to the FTIR studies, catalytic tests were performed in a fixed bed flow reactor. Prior to impregnation the unoxidized carbon sample exhibits very low catalytic activity in the propan-2-01 decomposition while the oxidized surface of carbon, especially of a metal containing carbon, effectively promotes the propan-2-01 decomposition. Although both dehydrogenation and dehydration processes take place simultaneously, our data indicate that the decomposition of propan-2-01 proceeds mainly through dehydrogenation. 02/00807 Organic geochemical characterization of Jurassic source rocks in Nileke section in north area of Vining basin Lin, X. e/ ctl. Kuongtrrr Yumhi Diqitr Huurte Tongho, 2000. 19, (I), 3942. (In Chinese) Organic geochemical characterization of Jurassic source rocks in Nileke section in north area of Yining basin was studied. Oil potential and prospects for the Jurassic source rocks in the area were approached based on the analyses of the sedimentary facies and tectonic evolution in the basin. The mudstone is middle level in organic matter abundance, and the organic matter type of mudstone is dominated by III,; and the organic matter type of coal is III, and III?, and its organic matter evolution is in low maturation. The source rocks had potential to generate hydrocarbon. It is expected that the inner part of basin is favourable to maturity and preservation of the source rocks. 02lOO808 Reference data for the adsorption of methanol on carbon materials Carrott, P.J.M. e, al. Curhon, 2001, 39, (2). 193-200. The adsorption of methanol at 298 K on carbon blacks and microporous carbons, including Carbosieve, Takeda molecular sieves, Maxsorb superactivated carbons and an activated charcoal cloth, has been studied. Analysis of the results indicates that the mechanism of adsorption of methanol on carbon blacks shows some similarities to that of water vapour. However, it is still possible to define reference data which can be used to obtain estimates of the surface area of

recovery)

carbon blacks, provided that the surface is reasonably polar, external surface area and micropore volume of microporous adsorbents, provided that the pore size is not very large.

and of carbon

02/00809 Sedimentology and hydrocarbon habitat of the submarine-fan deposits of the Central Carpathian Paleogene Basin (NE Slovakia) Sotak, .I. er al. Mrrrine end Perrokum Geology, 2001, 18, (l), 87-114. The Central Carpathian Paleogene Basin accommodates a subsiding area of the destructive plate-margin. The basin history comprises marginal faulting and alluvial fan accumulation (El); transgressive onlap by shoreface sediments and carbonate platform deposits (Ez); glacio-eustatic regression induced by cooling (Terminal Eocene Event); forced regression, tectonic subsidence and growth-fault accumulation of basin-floor and slope fans (Es); decelerating subsidence, aggradation and sea-level rising during the mud-rich deposition (Or); high-magnitude drop in sea-level (Mid-Oligocene Event), retroarc backstep of depocentres and lowstand accumulation of sandrich fans and suprafans (02-M,); subduction-related shortening and basin inversion along the northern margins affected by backthrusting and transpressional deformation (OzeMt). The basin-fill sequence has poor (TOC 5 0.5%) to fair (TOC < 1.0%) quality of source rocks. Maturity of OM ranges from initial to relic stage of HC generation. Paleogene rock-extracts display a good correlation with scarce trapped oils. The presence of solid bitumens and HC-rich fluid inclusions indicates overpressure conditions during HC generation and migration. Potential HC reservoirs can be expected in porous lithologies (scarp breccias), in basement highs and traps related to backthrusting, faultpropagation folding and strike-slip tectonics. 02/00810 Solvent extraction in the oil industry Hombourger, T. e/ crl. Per. &fin., 2000, 2, 359-456. Edited by Wauquier J-P. The paper examines the application of solvent extraction in the petroleum industry. This technology was used to extract aromatic compounds from lube oil stocks in order to produce lubricants, and it was used for the deasphalting of distillation residues in order to produce deasphalted oils and asphalts for different utilization. The extraction of aromatic compounds from lighter stocks, gasolines or kerosenes was the third application of this technology in order to comply with the present and future regulations concerning engine fuels and other products for combustion. The different types of the extraction equipment are presented, as well as the different extraction procedures. 02lOO811 Source rocks and hydrocarbon generation in Slovenia (Mura Depression, Pannonian Basin) Hasenhiittl, C. ef crl. Mmine md Perroleum Geology, 2001, 18, (I), I l5132. Source rock analysis (organic carbon, Rock-Eval, gas chromatography, vitrinite reflectance) and numeric modelling techniques have been applied to evaluate the hydrocarbon potential and the timing of hydrocarbon generation in northeastern Slovenia (Mura Depression, Pannonian Basin). Source rocks of Mesozoic age were not detected. Most Tertiary samples are gas prone. Oil-prone sediments occur mainly in EgerianlEggenburgian, Karpatian and Sarmatian levels. The maturity pattern reflects complex Neogene subsidence and thermal histories. So the thickness of the oil window varies from about 300 m (Maribor-Somat area) to 1500 m (Ljutomer Depression). The top of the oil window lies below a depth of 2500 m in the Ljutomer Depression whereas it reaches the surface in the Maribor area. Three main hydrocarbon generation phases are distinguished in different parts of the Mura Depression: (a) a Karpatian/Badenian stage due to extremely elevated heatflow (Maribor-Somat-Radkersburg area, Boc Anticline, probably Ormoz-Selnica Anticline); (b) a middle/late Miocene to early Pliocene stage due to Miocene deep burial (OrmozSelnica Anticline); (c) a late Miocene to present generation stage (Ljutomer Depression, eastern margin of the Murska-Sobota High). 02/00812 Stress sensitivity of fractured reservoirs Smart, B.G.D. e/ (I/. Jourrrcrl of Petrolrum Science and Engineering, 2001, 29, (I). 29-37. A fractured reservoir has a rock mechanical character which can be described by considering it to be built up from intact rock bounded by mechanical discontinuities. These discontinuities have been formed by natural processes and comprise fractures which normally make a steep angle to bedding, and the frequently ignored bedding-plane parallel discontinuities caused by, for example, weak clay-rich layers in elastics, or stylolites in carbonates. Both the intact rock and the discontinuities exhibit sensitivity to stress. In the case of the intact rock, this expresses itself as a pore geometry sensitivity which influences permeabilities and capillary pressure, with the changes being influenced by the stressstate. In the case of the discontinuities, three types of permeability changes are proposed, depending upon the stress and strain which develops across the discontinuity. Importantly, all the constitutive laws Fuel and Energy Abstracts

March 2002

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