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Keywords: concentration
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Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174184-MS
... enhanced recovery expression Sharma tangential rate concentration electrostatic force equilibrium kalantariasl critical value Injection Rate equation In this section, colloidal forces and torques on a single particle at the cake surface are briefly presented. Following O'Neil (1968...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174201-MS
... gel and breaker reaction dynamics from experimental data. Increased gel concentration in slurry injection, increased breaker concentration during fracture clean-up, and the flowback procedure are simulated to quantify the gel damage phenomenon. Features such as non-Darcy flow through fractures and...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174197-MS
... enhanced recovery injection pressure Simulation geometry specification water quality CP well perforation injection Completion Installation and Operations cake geometry flow rate cake permeability Upstream Oil & Gas concentration reservoir matrix injection permeability...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174185-MS
.... flow in porous media external cake formation water management Upstream Oil & Gas waterflooding concentration enhanced recovery Fluid Dynamics Bedrikovetsky coefficient deep bed filtration injectivity damage parameter particle size cake permeability filtration particle impedance...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174191-MS
... [ Ishkov, 2009 ]. Similarly, magnesium can co-precipitate with CaCO 3 and form Mg-CaCO 3 scale [ Chen, 2005 ; Zhang 2000 ]. Therefore, the measured concentration of such ions with increased seawater breakthrough gives an estimate of mixing/scaling reactions taking place and seawater breakthrough is then...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174192-MS
... enhanced recovery fines invasion concentration Modeling & Simulation Fluid Dynamics nanoparticle concentration Reservoir Characterization flow in porous media adsorption sand pack ghanbarnezhad moghanloo fine migration fine particle nanoparticle injection formation damage...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174169-MS
... drilling fluid property polymer Completion Installation and Operations Upstream Oil & Gas fluid-loss control pill pore space drilling fluid selection and formulation drilling fluids and materials concentration particle effective permeability workover operation viscosity formation matrix...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174199-MS
... acquisition software records all experimental parameters (pressure, differential pressure and time) in real-time mode by a standalone computer (20). Effluent suspensions were collected in plastic beakers (21). Concentration of particles in effluent streams and their size distribution are measured by a...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174203-MS
... 0.5% HF >10% silt and <10% clay 12% HCl and 2% HF 9% HCl and 1.5% HF 6% HCl and 1% HF <10% silt and >10% clay 12% HCl and 2% HF 9% HCl and 1.5% HF 6% HCl and 1% HF The objective of this study is to present a guideline for designing the HF concentration in a more...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174204-MS
... damage can be related to many factors, such as polymer type and concentration, crosslinker, breaker type and concentration, and rock permeability. Guar-based fluids can cause more damage than cellulose-based fluids, due to a larger amount of insoluble residue from guar polymers ( Almond 1982 ). A higher...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174182-MS
... positively charged due to pH of 6-8. All charged surfaces that contact formation brine will have an access to ions near the surface, which is usually called the double layer. In spite of high concentration of NaCl, Na + and Cl - ions are not active in the wettability alteration process. Formation water...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174242-MS
... Furthermore, the extreme corrosion tendency of HCl requires high concentrations of corrosion inhibitors and intensifiers [ 3 ], [ 4 ]. Another problem often encountered during acidizing sandstones with HCl-based formulations is their incompatibility with some clay minerals [ 5 ]. Considering...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174248-MS
... perforated completions can still be dependent on the solids concentration as the perforation does not always guarantee that the permeability damage zone is totally bypassed by the perforation tunnels. For description of transient processes of mud component invasion/removal in the formation near-wellbore...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174225-MS
... fundamental purpose is not damaged. Figure 6 Dispensing the solid product using a funnel/ejector method The biopolymers and synthetic polymers are available on the market as concentrated solutions, gels, crushed powders, beads and partially pre-crosslinked solid microgels. All of them are...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174220-MS
..., which is thought to be the largest single fracture treatment ever pumped in this particular national sector of the southern North Sea. A tip-screenout design was successfully used to achieve a high average proppant concentration of 23 kg per square metre (4.7 lb/ft 2 ), which equates to an average...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174264-MS
... Abstract An existing limitation of chelant-based fluids available for sandstone acidizing with hydrofluoric acid (HF) is the presence of sodium in the concentrate of the aminopolycarboxylate fluid, which is common in all chelating agents soluble below pH 3.5. The presence of sodium...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174210-MS
.... Nevertheless, these systems still need high active concentrations to develop rheology at elevated temperature and in hard water conditions. Alternative systems based on synthetic polymers have shown increasing interest over the past years for Oil and Gas applications but their utilization as rheology...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174277-MS
... only qualitatively evaluating the ability of water to precipitate or dissolve salts. Determination of saturation index is carried out through correlation for each salt and there is the difficulty of measuring the concentration of all ions in HPHT wells ( Yuan et al. 1997 ). In addition, saturation...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174254-MS
.... 2010 ). The objective of this work is to investigate the effects of reservoir temperature, pressure, surfactant type, and salt concentrations on the CMC value of the AOS solution with and without nanoparticle in solution. In this paper, the pendant drop method was employed to measure the surface...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference and Exhibition, June 3–5, 2015
Paper Number: SPE-174265-MS
... 80°F, the gel time of nanosilica can be controlled to desirable values by adjusting concentrations of the gelation agents. The nanosilicas that are currently used in the oilfield, however, are not suitable for low-temperature applications (e.g., below 80°F) because of extremely long gel times. This...

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