... The apparatus for measuring CO 2 solubility and swelling factor in water/brine is mainly composed of a PVT visual cell with the stirrer mount, stepper motor with driver, heating jacket with temperature controller, a programmable syringe pump (Teledyne ISCO, 500D series), a pressure transducer...

... and minimum crystallization temperature of the brines. The effect of the hydrate inhibitor on the PVT behavior of the mixture is usually ignored, the changes in the compressibility of the mixture (brine - hydrate inhibitor) may be different from that of the brine without a hydrate inhibitor, and could place...

.... The lower polymer requirements and the higher incremental recovery achieved by low salinity polymer flooding improves economic performance making its application attractive in reservoirs where primary recovery is normally below 10% of OOIP. oil sand complex reservoir brine chemical flooding methods...

... composition. The effect of sulphate content in the brine was key in this work; polymer flooding was used as a final step to discard any possible further effects and as mobility control agent. Micromodel experiments conducted in this work indicate that Smart-Water flooding performs better in mixed-wet...

... as the temperature increases from 77 to 180°F. Nanoparticle-based foams are more stable over time compared to those stabilized by surfactant. AOS, as an anionic surfactant, improves the MRF by 300% compared to brine alone. Adding silica nanoparticles to the AOS solution improves the foam stability and increases...

... and production losses related to this phenomenon. oilfield chemistry flow in porous media formation damage Fluid Dynamics Brine Engineering Santander caco 3 Upstream Oil & Gas deposition porous medium Production Chemistry petroleum engineering concentration flow rate physicochemical...

... soluble in water. The resulting low pH carbonic acid typically increases the geochemical reactivity of the system, and thus it is no longer sufficient to consider the scale risk associated with the formation and injection brines, but the impact of mineral dissolution deep within the reservoir may also...

.... The studied system consisted in a 1 to 3mD permeability and 15% porosity sandstone reservoir core, with dodecane as model oil and a 64g/L NaCl brine at 60°C. Specific petrophysical protocols were used to avoid non-uniform saturation profiles at irreducible water saturation (Swi) generated by strong capillary...

... oil recovery methods. This is particularly true for reservoir conditions with high temperatures (above 85°C) using injection brine with high hardness. In such conditions, using specific robust polymers is necessary to ensure stability over months during propagation in reservoirs. These polymers...

... concentration Upstream Oil & Gas Brine inhibitor water management Subsurface Corrosion corrosion inhibitor Efficiency scale inhibitor alloy organic acid mixture lbm Mgal extract steroidal lactone Inhibition inhibition efficiency coupon acid inhibit corrosion Introduction Acidic...

... Abstract Modifying the composition of injection brine can cause wettability alteration and lead to enhanced oil recovery (EOR) from carbonate reservoirs. The two main approaches are: (1) dilution of injected brine and (2) selective modification of the concentration of potential determining ions...

... into the formation ahead of acid. For instance, workover of a pre-flush of brine (as a kill fluid) ahead of acid injection, results in the near-well vicinity having high water saturation when acid enters the formation. In oil producing wells, after a certain period of oil production, the near-well vicinity would...

... Abstract After workover jobs, many oil-producing wells have reduced their production, which is caused by formation damage created by using inadequate completion brine. The damage mechanism may be: 1) Block in the face of the formation, produced by the tendency to form emulsions between the oil...

... detailed input data to develop representative models. Analytical methods provide a much faster approach to estimate UCSC in geological formations; nonetheless, current analytical methods are mostly focused on applications for storage calculations in aquifers, which only consider rock compressibility, brine...

... investigated to determine the downhole performance. The characterization results of these materials will be discussed and compared to other materials currently used for tripping balls. The testing included investigation of the corrosion rates of these materials in brines and acids at various temperatures...

... applications. regular light proppant 16 20 gravel pack bpm packer proppant spgr 1 hydraulic fracturing upstream oil & gas completion open hole brine horizontal well sand control efficiency directional drilling ulw proppant spgr 1 crossover tool drilling operation ocelote field...

... operation, when water based drilling fluid was injected during the pre-completion operations of a production well with long horizontal section in Campos Basin. After the displacement of the water base drilling fluid 9,4 ppg by completion fluid (brine) 9,4 ppg, the well started to lose about 15 bph of fluid...

... or the postponement of the cleaning for some months, counting on the gravitational segregation of the fluids in the reservoir. In some cases, these solutions are not enough. In these cases, a possible solution is the combination of a saturated fracturing fluid together with a saturated brine, what reduces the hydrate...

.... This was essential in understanding the total system behaviour and to optimize fluid selection. All testing was performed using representative core and formation brine from the Hibiscus MIV reservoir unit. Project Outline The Hibiscus development project was formally sanctioned in June 2000. The Well...

... The success of pills in lower density brines (<13 lb/gal) formulated by employing these concepts over the past several years, led the authors to initiate a testing program to extend this technology to zinc-based brines. This testing program ( Table 1 ) began using a base fluid...