... Abstract This paper describes a series of experiments that used X-ray computer tomography (CT) to visualize the mobilization of remaining oil by Alkaline Surfactant Polymer (ASP) flooding after conventional waterflooding. The experiments were conducted in cores drilled from Gildehauser...

... of surfactant and polymer in carbonate porous media were investigated experimentally and analytically in order to study the mechanism and quantify the contribution of each effect. Single phase flow tests of surfactant, polymer and surfactant-polymer mixture were conducted on reservoir carbonate core plugs...

... is verified through greater permeability resistance factors in the low-permeability cores than in the high-permeability ones, even though other experimental conditions are same ( Zitha et al . 1995 ). Rheology of Polymeric Solution To understand bridging adsorption, the concept of changing polymer...

... were carried out to find the polymer concentration to obtain, a target viscosity of 7 cP at reservoir conditions. Then core floodings were performed to evaluate the effectiveness of polymer injection at reservoir conditions. Moreover, since polymeric solutions often exhibit non-Newtonian behavior...

... Abstract The aim of this study was to reduce risk in polymer flooding projects. Specifically, this study investigates polymer retention and viscosity losses. The study reservoir is a fluvial type reservoir with friable/unconsolidated sandstone units that are saturated with viscous oil...

... Abstract ASP flooding achieves high incremental oil recovery factors over water flooding by reducing the interfacial tension (IFT) to ultralow values and by ensuring good mobility control, provided by the polymer. Traditionally, this has been achieved by tuning the ASP flood so...

...) to depict the fluid flow in a finite-difference space. This paper is a continuation of our previous work on miscible and immiscible flooding; we investigate the effect of grid size on the displacement behavior of a polymer flood, in terms of force balances, concentration changes and polymer rheology using...

... with metals (specialy ferrous iron), residual initiators (remaining from polymerization), or other free radical generating chemicals. For this reason polymer manufacturers do not recommend using HPAM above 70 °C as thermal degradation will occur at higher temperatures and instead recommend using co-polymer up...

... Abstract Two phase polymer flooding experiments were carried out using a novel Lab-on-a-Chip experimental set up. The microfluidics device uses porous Glass-Silicon-Glass (GSG) micro-models which were constructed based on reservoir rock thin section. The model attempts to resemble the thin...

... Alkaline Polymer Surfactant (ASP) flooding is an Enhanced Oil Recovery (EOR) technique aiming to mobilise remaining and residual oil. Estimating the average oil saturation prior to and post ASP flooding is a recognised challenge, but is vital to the evaluation of an ASP pilot. The use of oil...

... to change the chemistry. For example, NVP (N-vinyl pyrrolidone) brings better neighboring protection against hydrolysis of acrylamide ( Fernandez, 2005 ; Doe, 1987 ), but because of its low reactivity in polymerization, high molecular weight polymers are harder to obtain and a further over dosage is often...

... Abstract A novel technology has been developed for in-depth profile control based on thermo-gelling polymers (refers as THR). This technology differs from the ones currently used through different aspects. Thermo-gels polymers spontaneously gel when they reach a threshold temperature. Below...

... Abstract The Polymer Injection Project on Dalia field, one of the main fields of Block 17 in deep offshore Angola, is a world first for both surface and subsurface aspects. Thorough geosciences and architecture integrated studies led to decide to phase the project, with a polymer injectivity...

... Abstract Chemical EOR technologies used offshore can either be short term reservoir conformance treatments such as Marcit Gels for near-wellbore and BrightWater® for in-depth permeability modifications or long term floods such as mobility control improvements utilizing polymers (latex emulsion...

... and size exclusion chromatography . Journal of Chromatography A , 1218 ( 27 ): 4257 – 4267 . Ouyanga , L. , Wanga , L. , Schork , F.J. 2011 . Synthesis and nucleation mechanism of inverse emulsion polymerization of acrylamide by RAFT polymerization: A comparative study . Polymer...

... Abstract The in-situ behavior of a Thermally Activated Polymer (TAP) was investigated through laboratory work on a high permeability core (7.5 D) and was interpreted by refined simulation. The experiment, carried out in a 100% water saturated core, aimed at determining the adsorption of the non...

... microscopy probe liquid-solid interaction enhanced recovery black arrow experiment liquid-solid interaction measurement platform interaction application society of petroleum engineers microscopy oil droplet EOR chemical roughness droplet shape Modeling & Simulation polymer spatially...

... Abstract The contribution of alkaline/Surfactant/Polymer to the stability of produced crude oil emulsions is neither fully understood nor thoroughly investigated although there have been reports from previous projects that implicate risk produced water treatment. This study focuses on water...

... polymer injection profile tracer breakthrough water injection injection waterflooding cdg pilot polymer concentration production response enhanced recovery CDG Phase II oil production response CDG injection incremental oil producer pilot area reservoir Introduction The Loma Alta...

... investigated the performance of membrane technologies to remove oil, particles and polymer for treating viscosified PW. Wang et al (2011) did some tests, in dead-end mode, with PVDF polymeric ultrafiltration membranes ( Wang et al. 2011 ). The polymer used was a polyacrylamide of 2720 kDa. Using Hermia...