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Keywords: surfactant
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Proceedings Papers

Paper presented at the Offshore Technology Conference Brasil, October 24–26, 2023
Paper Number: OTC-32720-MS
... at specific time intervals based on image analysis. Three different fluid systems were utilized: pure Viscoelastic Surfactant (VES), VES with DTPA, and VES with GLDA. The concentration of these systems was selected based on optimal rheology and interfacial tension performance. The contact angle was measured...
Proceedings Papers

Paper presented at the Offshore Technology Conference Brasil, October 24–26, 2023
Paper Number: OTC-32768-MS
... Abstract Enhance oil recovery using CO 2 as a solvent is posed to be a major technology in producing energy with a lower carbon footprint. It is therefore important to operate such technologies in an efficient manner. Foam-assisted technologies in which a surfactant aids conformance of the CO...
Proceedings Papers

Paper presented at the Offshore Technology Conference Brasil, October 29–31, 2019
Paper Number: OTC-29899-MS
... atom human computer interaction eor process molecule composition surfactant navigate interface equation of state virtual reality nanoscale Alejandre , J. ; Chapela , G. A. ; Bresme , F. ; Hansen , J.-P. ; The Journal of Chemical Physics , 130 ( 2009 ). Allen...
Proceedings Papers

Paper presented at the Offshore Technology Conference Brasil, October 29–31, 2019
Paper Number: OTC-29931-MS
... Abstract Surfactant losses due to adsorption in the hydrocarbon reservoir is a major concern in surfactant based chemical enhance oil recovery (chemical EOR) methods because it results in the loss of optimum concentration required for adequately reducing oil-water interfacial tension (IFT...
Proceedings Papers

Paper presented at the Offshore Technology Conference Brasil, October 29–31, 2019
Paper Number: OTC-29754-MS
... & gas surfactant oil recovery enhanced oil recovery material artificial intelligence machine learning effectiveness polymer concentration technology conference screening criteria enhanced oil recovery recommendation 10-fold cross validation alkaline test data enhanced recovery...
Proceedings Papers

Paper presented at the OTC Brasil, October 24–26, 2017
Paper Number: OTC-28142-MS
... consisted of a model oil (Exxsol D80) with and without surfactants, and tap water. A comparison of the experiments with and without a mixing valve was performed. The experiments were conducted at different superficial liquid velocities and five different watercut values (The water cut is defined...
Proceedings Papers

Paper presented at the OTC Brasil, October 24–26, 2017
Paper Number: OTC-28204-MS
... Abstract Emulsions are formed during crude oil production due to the presence of natural surfactants and brine in the petroleum fluids. In addition, turbulence wich the produced fluids are subjected to, either initiated by differential pressure in the drawdown region near the wellbore...
Proceedings Papers

Paper presented at the OTC Brasil, October 24–26, 2017
Paper Number: OTC-28025-MS
... indicated that the preflushes with the fibers were able to clean and demulsificate the drilling mud much more efficiently than preflush without the fibers. Indeed, it was possible to optimize the amount of the preflush surfactants and still obtain excellent results. Some successful cases of field...
Proceedings Papers

Paper presented at the OTC Brasil, October 27–29, 2015
Paper Number: OTC-26162-MS
... density drill-in fluid to address depleted reservoir challenges. aphron foam emulsion formation damage upstream oil & gas drilling blind hollow sphere surfactant reservoir limitation drilling fluids and materials technology conference fluid system stability application drill...
Proceedings Papers

Paper presented at the OTC Brasil, October 27–29, 2015
Paper Number: OTC-26123-MS
... offshore technically and economically viable. shear rate reduction polymer application surfactant viscosity evaluation consumption chemical consumption enhanced recovery argillier concentration enhanced oil recovery chemical enhanced oil recovery stability separation compatibility...
Proceedings Papers

Paper presented at the OTC Brasil, October 27–29, 2015
Paper Number: OTC-26217-MS
... Abstract Mixtures containing surfactants and polymers to be used in enhanced oil recovery operations should display special features: most notably low (or ultra-low) oil/water interfacial tensions and moderate viscosity. There is a variety of methods employed to assess formulations performance...
Proceedings Papers

Paper presented at the OTC Brasil, October 29–31, 2013
Paper Number: OTC-24338-MS
... to minimize cement contamination. The cement contamination by spacer is affected by different types of surfactants that are used and it is important to understand the effect of each surfactant for successful recipe. Cementing simulation software can help achieve the objectives while planning a cement plug...
Proceedings Papers

Paper presented at the OTC Brasil, October 29–31, 2013
Paper Number: OTC-24434-MS
... between the upper open hole and the top of the bed. After propagation of the alpha wave, starts the third phase (beta wave). In this stage the particles begin to deposit over the bed, filling the upper open channel, as shown in Figure 1 1 . reservoir surveillance surfactant friction factor...
Proceedings Papers

Paper presented at the OTC Brasil, October 4–6, 2011
Paper Number: OTC-22341-MS
... effect has been investigated by several researchers to change the reservoir wettability by optimizing rock-fluid interactions using specific surfactant-brine systems during exploi-tation. It has been concluded that, beyond formation evaluation, phenomenological observations and the optimization of rock...
Proceedings Papers

Paper presented at the OTC Brasil, October 4–6, 2011
Paper Number: OTC-22257-MS
... laboratory and field approach was applied. To achieve better zonal coverage in these heterogeneous carbonate reservoirs, a viscoelastic surfactant (VES)-based self-diverting acid system was deployed. It consists of a VES and HCl. The new system self-diverts triggered by the increases in viscosity as the acid...

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