... of miscible displacement to recover light oil; injection of the surfactants water solutions, to separate sorbed hydrocarbons from the rock and change core wettability; and heating technologies to convert solid hydrocarbons into liquid and gaseous, and recover. The project explore potentially effective EOR...

... Table 1 The results of core analysis evaluating waterflood and WAG efficiency (Perm=100 mD) Parameters Unit of measure Value Waterflood displacement efficiency ratio fraction 0.445 Residual oil saturation after waterflood fraction 0.464 Displacement efficiency ratio...

... formation D3-III, an increase in the displacement efficiency of surfactant-polymer compositions compared to water was obtained 11–14% (with a total surfactant concentration of 1%), irreversible surfactant losses in water-saturated rock–up to 0, 38 mg/g. Displacement efficiency after water and surfactant...

... This section is aimed to prevent communication with the sea and to isolate upper unconsolidated formations along with fresh aquafers before displacing the well to oil-based mud. The interval is drilled to 120 m with a rotary assembly, is cased with 508.0 mm casing and then cemented through...

... and achieving top of cement at the required depth. The constant-bottomhole-pressure mode of MPD was used to maintain the same ECD during displacement of the well to a lighter fluid and during cementing, avoiding well influx during pumpoff events by compensating for the annular friction pressure loss...

... conditions of the displacing agent and, as a result, an increase in oil displacement factor and ultimate oil recovery. This paper presents the results of lab studies in the development of a modified TGCE procedure with the formation of foam systems in reservoir conditions, as an alternative to water-gas...

... design carbon dioxide modeling reactivation reservoir displacement integrity scenario caprock co2 injection stress-strain state reservoir pressure injection scottish carbon capture & storage Introduction In 2015, 196 countries signed the Paris Agreement, an international treaty...

... of the pilot site. chemical flooding methods polymer static adsorption injection well surfactant enhanced recovery adsorption efficiency residual oil saturation surfactant-polymer flooding permeability modeling & simulation displacement viscosity boundary reservoir upstream oil...

... completion, infrastructure facilities. The paper suggests approaches to the organization of a geomechanical monitoring system based on observations of displacements and deformations of the ground surface (or seafloor) during the development of reservoir and target interval. There are analytical...

... strength elastic displacement wellbore design displacement test result rock material upstream oil & gas contact surface compressive strength ultimate strength reservoir characterization maximum value particle loading uniaxial compression interaction indentation penetration test...

... was taken and is accepted based on the results of oil displacement experiments for to the limit oil-saturated core samples. In the works of foreign authors published over the past decades, it is substantiated that the most optimal strategy for the development of oil reservoirs depends on the ratio...

... conditions, based on numerical modeling of mechanical processes at specific locations. subsea system jack-up rig calculation artificial intelligence bottom soil drilling equipment displacement drilling rig characteristic mechanical properties maximum stress operation seismic impact...

... ("classical") polymer flooding technique for the task of aligning the oil displacement front, when instead of water a weak polymer solution is injected in high volumes (up to 30 % of pore volume), is of similarly low efficiency because of rapid polymer breakthrough to the production wells boreholes through...

... scale is required to comprehend the mechanisms for oil displacement from porous media. The X-ray computed micro-CT technology provides opportunities to study the complex fluid displacement process at the pore level. This work discusses wettability restoration in carbonate cores and its effect on fluid...

... production control gas injection method enhanced recovery pvt measurement heterogeneity carbon dioxide efficiency reservoir surveillance upstream oil & gas calculation production monitoring reservoir simulation displacement assessment yamburg field injection experiment...

... fracturing casing and cementing condensate reservoir drilling operation gas-condensate well displacement liner hanger mpa liner hanger system assembly seal assembly expandable liner hanger deployment complex reservoir upstream oil & gas west siberia hanger jurassic formation rotation...

... approach to the design of the entire job, namely: duration of circulation after casing running, volume of spacer fluids, design and weight of cement slurry, type and quantity of casing equipment, casing reciprocation or rotation, displacement fluid pumping rate, etc. However, even with all these conditions...

... orientation tectonophysical method vector shear stress reservoir geomechanics displacement stress tensor disjunctive dislocation stress field maximum tangential stress society of petroleum engineers cataclastic analysis method lode-nadai coefficient coefficient estimation Introduction...

... for Determination of Reservoir Properties (GOST, 1985) and OST 39-195-86 Oil. Method of Determining Flood Displacement Efficiency Factor In Vitro ( OST, 1986 ). Water was purified from mechanical impurities, also chloride salts were dissolved in it to achieve a density close to that of reservoir water...

... of displacement of super-viscous heavy oil by carbon dioxide in the conditions of the permian-carboniferous deposit of the Usinskoe oil field is the immiscible displacement condition. The displacement of super-viscous heavy oil by carbon dioxide from a low-permeability porous matrix at low temperatures...