SovietRxiv · Open Access in English
Rediscovering the Soviet scientific archive, in English
25357 full-text translations 14926 English PDFs 22539 abstracts
Showing 50 of 25357 papers
This study examines factors affecting the low-temperature mobility, expressed as pour point, of oils from several Tomsk fields. Using standard pour point measurements, the authors tested the effects of heat-treatment temperature, cooling rate, holding time, water and salt content, and additions or r…
This study examines the cracking of liquid hydrocarbons under a high-voltage pulsed electric discharge, focusing on toluene, p-xylene, and n-heptane. The authors varied discharge conditions, including pulse repetition frequency, energy, and voltage rise rate, and analyzed the resulting gases by gas-…
This study examines pyrolysis as a route for processing the light, boiling point to 62°C fraction of gas condensate from the Luginetskoye field to obtain lower olefins. Experiments were conducted in a laboratory flow unit at 725 and 750°C over contact times of 0.2 to 1.6 seconds, without steam dilut…
This study evaluates the commercial properties of straight-run fractions and residues from Poludennoye field crude oil in Tomsk Oblast. Using distillation, standard fuel property measurements, and adsorption separation on silica gel, the authors characterize gasoline, jet fuel, kerosene, diesel, lub…
The paper reports a compositional study of gas condensate from the Kazan gas condensate field in Tomsk Oblast, focusing on its physicochemical properties and gasoline-range hydrocarbon fractions. Group composition of fractions boiling up to 200°C was determined by the aniline-point method after remo…
This study evaluates the commercial properties of straight-run fractions and residues from Samotlor crude oil through distillation, physicochemical characterization, hydrocarbon composition analysis, and adsorption separation. The results indicate that light gasoline fractions can meet requirements …
This study examines the individual hydrocarbon composition of gasoline fractions from crude oils of the Poludennoye, Luginetskoye, and Samotlor fields in Western Siberia. Fractions with boiling ranges up to 150°C, and up to 122°C for the Samotlor sample, were obtained by rectification and analyzed b…
This study examines hot stabilization conditions for Samotlor crude oil aimed at obtaining a relatively narrow light hydrocarbon fraction suitable for chemical industry use. Using a 25 theoretical plate precision rectification column, the authors measured gas and distillate yields and determined com…
This paper characterizes the hydrocarbon composition of gasoline, kerosene, gas-oil, and higher boiling fractions from the Samotlor oil field. Using aniline-point analysis, adsorption separation, molecular sieve determination of normal paraffins, gas-liquid chromatography checks, and structural-grou…
This paper quantifies the distribution of gaseous and light hydrocarbon components released during stepwise degassing of bottomhole reservoir oil samples from the Samotlor field in Western Siberia. Using measurements of individual gas composition, gas volume, density, and residual dissolved gases at…
This study evaluates the composition and quantity of associated gas in downhole oil samples from formations A-1 and B-VIII of the Samotlor field in Western Siberia. Samples were degassed stepwise at reservoir temperature, and the released gases were analyzed chromatographically for hydrocarbons and …
This paper characterizes crude oil from the Samotlor field using standard physicochemical measurements and fractional distillation. The reported data show a relatively light, low-viscosity oil with modest sulfur, paraffin, resin, and asphaltene contents, a comparatively high pour point, and little c…
This study reports laboratory measurements of reservoir oil from the Pervomaiskoye field in Tomsk Oblast, based on a sample from well 260 in the Yu-1 reservoir of the Upper Jurassic Vasyugan suite. Using UIPN-2M apparatus and standard procedures, the authors determined saturation pressure, compressi…
This paper examines physical properties of oil samples from two wells in the Luginetskoye field, using laboratory measurements on a UIPN-2M apparatus at reservoir temperature and pressure conditions. Pressure volume behavior, saturation pressure, gas content, formation volume factor, shrinkage, dens…
This paper describes the geological structure and petroleum potential of the Luginetskoye gas-condensate and oil field in Tomsk Oblast, emphasizing Jurassic reservoirs within the Tyumen and Vasyugan formations. Based on drilling, well testing, and geophysical log interpretation from fourteen wells, …
The paper describes the geological setting and petroleum potential of the Pervomayskoye field in Tomsk Oblast, located on a local uplift in the northeastern Novo-Vasyugan swell of the Kaimysov arch. Based on seismic structural interpretation and early exploratory drilling, it identifies Late Jurassi…
This paper examines modern mineral formation from deep mineralized waters in the West Siberian oil and gas province, focusing on newly deposited carbonates at the mouth of the self-flowing Kolpashevo 5-R well and comparing observations from other wells. The authors combine hydrochemical characteriza…
This paper examines the stable carbon isotopic composition of oils and carbonate-bearing rocks from productive horizons of the Megion field in Western Siberia. Using mass-spectrometric determinations of oil, carbonate cement, siderite, and clay samples, the authors compare isotope ratios among beds …
This paper examines coal-like organic matter recovered from the Tyumen Formation in well 190 of the Peredovaya area, Tomsk Region, in relation to the area’s oil and gas prospects. The authors describe macroscopic properties and use proximate and elemental analyses, calorific value, stable carbon iso…
The paper analyzes how cracks in the cement sheath affect steady oil inflow into perforated wells. It derives filtration areas and pressure drop formulas for longitudinal and annular cracks, combining near-wellbore crack resistance with the plane-radial flow region, and compares these expressions wi…
This paper characterizes the Tygertysh intrusive complex in the Saksyr Range of the Kuznetsk Alatau, focusing on its intrusive phases, petrography, mineral composition, and petrochemistry. Field relations and optical mineralogical descriptions are used to distinguish three phases: early gabbro, gabb…
This paper argues that water bound in clayey sedimentary rocks differs thermodynamically from free gravitational water and may be substantially less stable under crustal conditions. Using published data on the physical properties and dissociation constants of adsorbed water, together with thermodyna…
This paper reports laboratory measurements of the physical properties of reservoir oil from well 295 of the Shinginskoye field, bed Yu-1 of the Vasyugan Formation, under reservoir conditions. Using a UIPN-2M apparatus, the authors determined saturation pressure, gas content, density, formation volum…
This paper reports on the gas-bearing potential of the basal Tyumen deposits within the Verkhne-Kombarskoye uplift of the Pudinsky Arch, where earlier exploration had focused mainly on upper Tyumen reservoirs. Using seismic structural interpretation and testing of well No. 290, the study documents a…
This paper describes almandine occurring in intensely metamorphosed biotite schists of the Takyr Formation in the Irtysh shear zone, northwestern Rudny Altai. The authors characterize crystal habit, surface sculpture, intergrowth structures, inclusions, physical properties, unit-cell parameter, and …
This paper reports the 1967 discovery and description of the Basandayka antimony and mercury ore occurrence in southern Tomsk Oblast. Based on field observations, petrographic examination, and ore-mineral identification in quartz veins cutting Lower Carboniferous clay shales and sandstones, the stud…
The paper describes the need for objective measurement of instantaneous mechanical drilling speed and reviews existing recorder and indicator instruments according to their connection to drilling rig components. It presents a device developed at Tomsk Polytechnic Institute for rigs with hydraulic fe…
This paper examines the stratigraphy of Devonian volcanogenic and sedimentary deposits of the Byskar Series on the northeastern margin of the North Minusinsk depression, where previous subdivisions and correlations were fragmentary and inconsistent. Using comparative descriptions of sections near Mo…
The paper examines organizational reserves in construction, installation, dismantling, and transport operations associated with drilling rigs, arguing that conventional linear schedules inadequately represent dependencies among tasks and resource assignments. It proposes the use of linear network sc…
This paper defines quartzolites as hydrothermal metasomatic rocks of predominantly quartz composition formed in tectonic zones, near ore metasomatic zones, and intrusion contacts, mainly through replacement of carbonate and other host rocks. Using field, petrographic, mineralogical, and chemical obs…
This article examines the paragenesis of metasomatic formations in Gornaya Shoria, focusing on secondary quartzites, quartzolites, skarns, and their relation to Riphean to Cambrian volcanism and intrusive magmatism. Drawing on field studies from 1960 to 1968, it distinguishes four volcanic complexes…
The paper addresses the problem of estimating the radius of influence of a single oil exploration well during steady-state flow testing, where methods based on interference between wells are generally inapplicable. It develops a calculation procedure from oil compressibility, Dupuit radial-flow rela…
This paper reports laboratory measurements of reservoir and surface properties of oil from the Strezhevoy field in Tomsk Oblast, using two samples taken from well No. 15, bed Yu-1, at 256.8 atm and 86°C. The authors determine saturation pressure, compressibility, gas content, density, formation-volu…
This paper addresses the protection of submersible oilfield pumps from sand and gas in produced formation fluid, focusing on limitations of conventional gas-sand anchors and earlier multi-section separators. It argues that effective sand removal requires much lower upward fluid velocity inside the s…
This paper analyzes the tectonic structure of mine fields in the northeastern Leninsky District of Kuzbass, at the junction of the Leninsky and Gramoteinsky blocks near the Zhurinsky thrust fault. Using observations from mine workings, it describes the Leninsky and Egozovskaya brachysynclines, assoc…
This paper characterizes the hydrogeological conditions of the Osinniki coal deposit in the Kuznetsk Basin, with attention to how stratigraphy, tectonics, facies variability, and weathering control groundwater occurrence and mine inflows. Using borehole documentation, interval testing, springs, well…
This paper revises the Precambrian stratigraphy of the Ust-Kabyrza district in Mountain Shoria on the basis of recent detailed geological mapping, lithological study, structural interpretation, and fossil collections. It subdivides the siliceous, terrigenous, and carbonate rocks of the Mrassu River …
This paper examines how to estimate the random component of geological feature variability when observed values also contain coordinated, regular change. It compares standard deviation, estimates based on successive differences, and root mean square deviations from smoothed values obtained by moving…
This paper presents new observations on Devonian stratigraphy along the southwestern margin of the South Minusinsk Basin, where lower Devonian sections are widely used for regional correlation in the Altai-Sayan area. It reviews the lithology, thickness, contacts, and distribution of the Mamat, Khar…
This paper characterizes Precambrian coarse-clastic deposits at the base of an Upper Proterozoic volcanogenic-terrigenous sequence in the upper Vorogovka River area of the Yenisei Ridge. Using measured sections and lithological-petrographic descriptions, the authors compare conglomerate horizons acr…
This paper describes the petrography and inferred formation sequence of the Cheremushkinsky alkaline rock massif on the eastern slope of the Kuznetsk Alatau. Based on field observations and microscopic mineralogical study, it argues that the massif is not compositionally homogeneous but records succ…
This article examines the chemical composition of mine waters from the Central, Komsomolsk, Berikul, and Natalyevsk gold ore deposits in the Kuznetsk Alatau. Using general chemical analyses of mine and surface waters, comparative data from other gold ore regions, and spectral analysis of concentrate…
This paper examines small calcite-filled tectonic fractures in Cretaceous flysch carbonate rocks from the Golovinka area on the northeastern Black Sea coast. On the basis of observations from bedrock exposures and more than 10,000 rounded rock fragments, it analyzes cross-cutting, displacement, vein…
This paper characterizes Devonian paleovolcanic edifices in the southeastern Solgon Ridge near Stog, an area where inherited northwestern and sublatitudinal faults influenced volcanic centers and volcanic facies distribution. On the basis of three years of field study, the authors describe several c…
This paper examines hydrothermal alteration of basic effusive and subvolcanic rocks in a sector of the Talanovsky graben in the northern Kuznetsk Alatau. Using field relations, petrographic and mineralogical observations, and chemical comparisons of altered labradorite pyroxene porphyrites, the auth…
This paper examines whether high-precision magnetometric surveying can identify and trace the Duturul tectonic zone on the periphery of the Balei graben in Eastern Transbaikalia. Using closely spaced cross-fault profiles, repeated reference observations, qualitative interpretation, selected quantita…
This paper examines the distribution of vanadium, manganese, arsenic, titanium, chromium, nickel, cobalt, copper, lead, and zinc in the iron ore horizons of the Bakchar deposit, with emphasis on the better studied elements vanadium, manganese, and titanium. Using chemical and spectral analyses of oo…
This paper examines the lithology, mineral composition, and facies variability of Jurassic coal-bearing deposits in the Rybinsk Depression, where thick brown coal seams occur within a structurally differentiated basin. Using petrographic, granulometric, facies, and electron-microscopic analyses of c…
This paper describes the application of a staining method for estimating albite content in potassium feldspars from albitized syenites of the Tashtagol massif in the Kondoma district. About 100 powdered samples from seven boreholes were treated with hydrofluoric acid and methylene blue, compared wit…
