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Keywords: viscosity
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Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174597-MS
... and gas-liquid ratio can improve the foam volume and decay half-life of three phase foam, whereas increasing in salinity and oil concentration decrease the foam volume and decay half-life. By increasing in solution viscosity, adsorption at gas-liquid interface and non-adsorption in solution, the DPG...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174640-MS
... this temperature, the product behaves as low-viscosity fluid, with good injectivity in reservoir rock. The system is single-component, and does not require any additive, contrary to classical gel systems which need to mix a polymer with a cross-linker (and often additives) to control gelation time. It is thus...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174594-MS
... Abstract In spite of CO 2 mobility reduction during CO 2 and surfactant solution co-injection, CO 2 -foam flooding in heavy oil reservoirs has relatively poor sweep efficiency due to the high viscosity the oil. Therefore, reducing the oil viscosity is necessary to improve CO 2 -foam sweep...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174650-MS
... on the viscosity of the foam. A high pressure high temperature rheometer setup was used to shear the CO 2 foam for the three different systems and the viscosity was measured with time. It was found that the viscosity of the CO 2 foams generated by these new systems of polyelectrolytes were slightly improved than...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174654-MS
... Abstract Increasing flooding solution viscosity with polymers provides a favourable mobility ratio, compared to brine flooding, and hence improved volumetric sweep efficiency. Flooding with a polymer solution exhibiting elastic properties has been reported to increase displacement efficiency...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174651-MS
... Phase Behavior experiment surfactant solution oil phase viscosity NaCl situ microemulsion formation Visualization society of petroleum engineers Oil Recovery The capillary forces acting along fluid-fluid and fluid-solid interfaces often cause a significant entrapment of the nonwetting...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174653-MS
... and successfully tested both at laboratory and field conditions. polymer viscosity HPAM Upstream Oil & Gas concentration low salinity brine Caracara Sur Field divalent cation chemical flooding methods low salinity HPAM polymer application enhanced recovery polymer solution effective...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174656-MS
... Abstract A previous SPE paper 1 described the operational challenges associated with hydration and viscosity control of linear long-chained hydrolyzed Polyacrylamide (HPAM) using produced formation water from the Lower Mannville (Sparky) formation. Production results were disappointing...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174564-MS
... Abstract Taking an offshore deep extra heavy oil reservoir from Bohai Bay as an example, the approach to determine gas-liquid phase equilibrium constants of multi-agent-heavy oil system is established, the nonlinear interpolation method of fluid viscosity considering the diffusion of gas...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174604-MS
... and fluid communication between the wells. For super heavy oil reservoirs in Fengcheng project in China, since the pay zone has low thermal conductivity and extremely high oil viscosity, establishing the temperature profile required for SAGD conversion using conduction as the only heating mechanism...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174619-MS
... composition intensification penetration reservoir flow in porous media invert-emulsion solution viscosity stability injection pashninsky oilfield permeability carbonate reservoir society of petroleum engineers Reservoirs which are at the final developing stage characterized...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174634-MS
... Abstract Laboratory simulation experiments of air injection with low temperature (65°C, 17 MPa) for a low permeability (4.5 mD) reservoir was conducted by using crude oil from the Dagang Oilfield, Northern China. The initial oil density and viscosity are 12 API and 74.5 mPa.s, respectively...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174613-MS
... reservoir. The polymer is designed to have a viscosity of 20 cp in situ. We start with 100 realizations of this 3D reservoir to reflect the range of possible geological structures honoring the statistics of the initial geological uncertainties. For a population of reservoirs representing reduced geological...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174665-MS
... is only feasible when injection rate is high for high viscosity solution. However, injection of viscous polymer solutions has been a concern for the field application of polymer flooding. The pressure increase in polymer injectors can be attributed to (1) formation of an oil bank, (2) polymer rheology...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174627-MS
... 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...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174672-MS
... to the nature of the sand or to the fact that no residual oil was present in the porous medium. Secondly, in such high permeable sand, the main mechanism for mobility control of the swollen TAP was found to be the viscosity increase of the TAP solution. Indeed, in such high permeability material, permeability...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174694-MS
... Intelligence low salinity deployment application reservoir viscosity sweep efficiency polymer portfolio simulator EOR includes any technique that alters the fluid flow properties and thus recovers hydrocarbons that are not produced during primary and secondary depletion. EOR techniques can...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174697-MS
... because of the cost and difficulty of exogenous microorganism flooding. MEOR screening criteria for reservoirs has been improved. The parameters include temperature, salinity, oil viscosity, permeability, porosity, wax content, water cut, and microorganism concentration in which production fluid...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174689-MS
... and microfluidics; the latter allows the determining of shear and extensional components. The measurements included shear viscosity, SAOS (relaxation), N 1 (streamline tension) and extensional thickening (strain hardening). In addition, polymer in-situ rheological behavior was measured using a microfluidics...
Proceedings Papers

Paper presented at the SPE Asia Pacific Enhanced Oil Recovery Conference, August 11–13, 2015
Paper Number: SPE-174624-MS
...) and hydrodynamic size for their optimal design. The range of Mw for various types of available HPAMs is between 4 and 30 million g/mol and is typically determined using intrinsic viscosity measurement. Molecular weight distribution (MWD or PDI) cannot be determined since neither standards with low PDI nor GPC/SEC...

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