... to the previous research with 7-15, the oil recovery factor with 7-25 was smaller at 5.0 PVI, but similar at early times up to 1.5 PVI. When the SAS concentration was reduced to 0.1 wt% SAS for 0.5 PVI, the oil recovery factors with 7-25 and 7-15 were close to each other at both early and final stages...

... block, hence it can be solved fully implicitly and simultaneously. This treatment of solid concentration allows the model to advance timesteps large enough that c i and ϕ v change significantly. Fluid Rheology Table 1 Comparison of important aspects between CEOR project and nanoflooding...

... and operations downhole intervention drilling fluids and materials well intervention fracturing fluid production enhancement concentration lbl self-assembled pem closure stress mslib app preview pec building block hpg drilling fluid management & disposal hydraulic fracturing fluid loss control...

... and Langmuir parameters for absolute adsorption determined by the SLD model using the experimental data provided by Findenegg (1983) . Properties 211.7 (F) 166.7 (F) 121.7 (F) 76.7 (F) BET Maximum adsorbed concentration, C ma (lb/ft3) 14.05 14.11 14.12 14.21 BET...

... ] This model provides the dominant molecular and hierarchical nanocolloidal species of asphaltenes all of which are stable for geologic time. The complexity is that asphaltenes have three solublity thresholds in toluene and in reservoir crude oil. At low concentrations, asphaltenes are dispersed as molecules...

... the predictive capability to pre-select potential field candidates for successful LSAMF implementation. flow in porous media brine lsamf waterflooding concentration suresh kumar enhanced recovery upstream oil & gas variation sandstone core lswf microbial method fw salinity reduction...

... reservoir concentration carboxylic acid seawater wettability alteration reaction exchange reaction surface potential injection Introduction where κ is the inverse of the Debye length and d s is the slip plane, estimated using the correlation proposed by Heberling et al. (2011...

... to be an efficient, safe and cost effective alternative intervención de pozos petroleros enhanced recovery well intervention downhole intervention drillstem testing coiled tubing operations completion installation and operations drilling operation drillstem/well testing concentration acid amplitude...

... reservoir characterization downhole intervention core analysis flow in porous media production enhancement upstream oil & gas enhanced recovery complex reservoir polymer concentration porosity experiment pressure response acid injection fluid dynamics pv bt rock heterogeneity...

... the acid type and concentration, fracturing fluid recepie (gel), and chemical additives which provided a basis for the design process. During the tests, priority was given to detecting and, if any, preventing the formation of emulsion or sludge after heavy oil, acid and gel get into contact...

... of crude oil and rock in the low salinity water mechanism. Our approach suggests a simple, rapid and low-cost methodology for screening target reservoirs for LSWI. upstream oil & gas experiment waterflooding lsf enhanced recovery concentration investigation form micro-dispersion reservoir...

... added concentrations, suggesting a fairly efficient reaction for low or moderate PEG quantities. As PEG concentration in the reaction increased above 4 μmol/m 2 , however, the grafting of additional PEG to the silica surface quickly slowed, leveling off near 1.9 μmol/m 2 of measured PEG grafting...

...Abstract Abstract With atmospheric methane concentrations rising, spurring increased social concern, there is a renewed focus in the oil and gas industry on methane emission monitoring and control. In 2019, a methane emission survey at a bp asset west of Shetland was conducted using a closed...

... fundamental data for simulating, designing, and optimizing the hybrid solvent-thermal recovery processes for heavy oil reservoirs. equation of state dme co 2 co 2 concentration saturation pressure pvt measurement experimental measurement theoretical model upstream oil & gas physical...

.... The plan has been described in detail in Kumar et al., 2016 2 . Polymer was planned to be injected at 3000 ppm concentration which would be tapered later in field life. Planned well head viscosity was 30 cp which was expected to drop to 20 cp at well bore conditions. No major degradation of polymer...

... for improvement of sweep efficiency enjoys field success. The effect of low salinity waterflooding is often marginal and it may even decrease recovery compared to seawater flooding. Polymer and surfactant injection are often effective (except at very high salinities and temperatures) but concentrations...

... (°F) −6 to 6 (21 to 43) −39 (−38) −2.5 (27) 12 (54) −12 (10) −21 (−6) Approximate Viscosity, cP 1.2 to 3.4 1.3 4.2 3.6 1.4 2.2 Oil Viscosifier/Foam Stabilizer Oil viscosifier or foam stabilizer and its concentration are essential to develop a successful foam formulation...

... the highest-pressure buildup compared to other cases. This would indicate star shapes with eight arms and lattices can provide better entanglement and stronger 3-D structures (plug). For Case I, the increase of LCM concentration increases the amount of pressure buildup by 100%. For Case II, the pressure...

... composed of different concentrations of surface-modified anthracite particles, 0.1, 0.2, and 0.4 vol.% were prepared. For the sake of comparison, samples including anthracite particles without any surface modification were also prepared. To mimic downhole conditions, cement samples were cured under high...

... pressure in the fracture and control the height of the rupture. The goal of this research is to develop such fluid. hydraulic fracturing proppant polymer concentration composition surfactant frac fluid fracturing fluid porous medium experiment proppant transport air bubble fracturing...