... core-shell polymer (HBAPAM) with functionalized nano-SiO 2 as core multibranched associative polymeric chains as shell (in-situ free radical polymerization strategy), they evaluated the viscosity after 25 days of aging and found viscosity retention of 77% (47% viscosity retention rate additional...

... Abstract This paper presents the design of a polymer flooding pilot test for an extra heavy oil reservoir located in the Orinoco Oil Belt, Venezuela. We describe a workflow consisting of extensive experimental work, numerical simulation and upscaling that led to an optimized polymer flooding...

... Abstract Polymer admission studies at the objective reservoir layers are one of the first critical experimental tests prior to field injection. Pressure build-up in the injector well is measured during a short period of time and its projections are used to select maximum polymer injection flow...

... in combination with fracturing operations, providing acid diversion, and acting as a solids free fluid loss pill ( Vasquez and Eoff 2013 ; Curtis et al. 2008 ). Experimental Study Two potential application methods for coating proppant with the RPM polymer were considered. The first involves dry coating...

...Polymer chemistry All polymers investigated were obtained from industrial batches. Samples were supplied in powder form. Product characteristics are listed in Table 1 . Molecular weights (Mw) were determined from intrinsic viscosity measurements. Note as you decend Table 1 , the level...

... % Methods Surfactant-polymer formulation design Surfactant formulation was designed using Winsor III microemulsion as screening criteria for the detection of ultra-low interfacial tensions. The methodology has been detailed in previous papers ( Morvan et al., 2008 ; Moreau et al., 2010 ). Phase...

... Abstract This work investigates the use of polymers during CO 2 WAG using a physical model. Coreflooding experiments were conducted to compare polymer assisted WAG, conventional WAG, continuous CO 2 flooding, and polymer flooding. The effect of miscibility in the CO 2 – oil interface...

... for the application of polymer gels in hydrocarbon reservoirs to R. Sydansk and P. Argabright. In this case the chemistry of polymeric gels remains unchanged in its concepts, but this time the polymer and the crosslinker are mixed from surface, and are injected into the formation at the same time (water + polymer...

... for well completion (without the necessity of having to remove it from the formation) while causing zero damage and build pressure in the casing during completion of a depleted well. History of Well Completion with Polymer Water-soluble polymers used within the oil and gas industry can be classified...

... or monomer is polymerized, the resultant polymer is called a homopolymer. Examples include polyethylene, polystyrene and polytetrafluoroethylene (PTFE). When more than one type of monomer is polymerized, copolymers or dipolymers are formed. The distribution of monomers in these copolymers can be statistical...

... of guar gum, buffer (monoethanolamine) and crosslinker (borate solution) as the base components. Deionized (DI) water was used in the polymer preparation. Procedures The following procedure was used to prepare all samples: Abstract Multiple-stage hydraulic fracturing jobs are usually needed...

... Percent Inhibition curves for polymeric inhibitor at increasing dosage. 40 ppm iron. Figure 3 Effect of iron on the performance of polymer and phosphonic acid chemistries for barium sulfate inhibition. 250 ppm dosage. Figure 4 Effect of blending inhibitors. Blend values indicate ratio...

... Abstract The literature screening criteria for polymer flooding established the maximum oil viscosity at 150 cP; however, oil price increases and technology improvements have encouraged pilot tests in heavy oilfields. This paper shows the results of an ongoing polymer flooding pilot test...

... defined barriers, the fracture propagates into the water with minimal leakoff of the RPM into the fracture faces. In theory, the RPM polymer present in the interstitial water of the fracturing fluid leaks off into the fracture faces, as the hydraulic fracture propagates. For this to occur requires...

... belongs to a reservoir typology where more than 70 % of projects have reported successful colloidal dispersion gel (CDG) and polymer injection ( Fig. 2 ). In summary, some of the analog fields identified in the advanced screening include: ■ Polymer injection in Byron and Oregon Basin Fields...

... Abstract This paper presents the laboratory development of an organically crosslinked polymer (OCP) system with a wide temperature range of execution (60 to 350°F). The OCP system is targeted to address conformance problems (water and gas shutoff) to ultimately improve hydrocarbon recovery...

... data, minimizing NPT and reducing costs related to fluid and cuttings disposal. drilling fluid chemistry drilling fluids and materials wellbore stability rheological property Disposal Hpwbf drilling fluid formulation polymer mud weight characteristic Mexico drilling fluid property...

... In addition, hydrocarbon recovery performance of waterfloods can be improved by methods that increase the oil-displacement efficiency and/or the volumetric-sweep efficiency, which includes the use of gas, chemicals (wettability alteration, surfactants, or polymers), solvents (alcohol or CO 2...

... will increase well profitability, improving water-oil ratio, reducing water management costs and environmental impacts. However, RPM treatments are not always effective, as they depend on several aspects associated to formation and fluid production characteristics, polymer chemistry and the interaction between...

... The principle involved in the polymer project process to the mobility control is well-known; however its application in field is directly connected to the reservoir selection as well as polymer and slug specification ( 2 - 7 ). Another important point of this kind of project is the evaluation...