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Keywords: determination
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Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190702-MS
... Abstract An analytical technique was developed to directly determine the concentration of aqueous sulphide in exotic scale studies. The technique is based on measuring the absorbance of sulphide samples in a copper reagent using an ultra-violet visible (UV-Vis) spectrophotometer. Calibration...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 11–12, 2016
Paper Number: SPE-179877-MS
.... To verify the performance of the ICP-OES and to guarantee the solubility measurements, a commercial standard solution of a known concentration of zinc was used. The error of the solubility measurements is determined using the results of the measurements using the standard solution of zinc as follows: (1...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Scale, May 30–31, 2012
Paper Number: SPE-155229-MS
... and uncertainty assessment upstream oil & gas phi phf experiment enhanced recovery production chemistry spe 155229 naphthenate oilfield chemistry concentration acidic crude oil risk management risk assessment acid partition coefficient determination well 2 0 crude oil calcium naphthenate...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Symposium, May 31–June 1, 2006
Paper Number: SPE-100611-MS
... for determination of kinetics coefficient from laboratory coreflood on quasi steady state commingled flow of injected and formation waters. The current study extends the method and derives formulae for calculation of formation damage coefficient from pressure drop measurements during coreflood. The proposed method...
Proceedings Papers

Paper presented at the International Symposium on Oilfield Scale, January 30–31, 2002
Paper Number: SPE-74679-MS
... procedure, as currently adopted by different laboratories, can have a significant impact on determined MIC values and comparative performance of different species. Such procedural modifications can therefore impact upon the reliability of data obtained in field chemical selection studies...
Proceedings Papers

Paper presented at the International Symposium on Oilfield Scale, January 30–31, 2002
Paper Number: SPE-74664-MS
.... The proposed extension to Welge s method determines the partition of permeable layers in a reservoir from tracer concentration in production wells. Knowledge of this partition is important for modelling of oilfield scaling accounting for Barium supply from impermeable layers. Introduction Scaling...
Proceedings Papers

Paper presented at the International Symposium on Oilfield Scale, January 30–31, 2001
Paper Number: SPE-68309-MS
... and determination of the exact amount of precipitated barium sulphate was less certain, e.g., approximately 10% of the barium was precipitated. Temperature and pressure conditions for these coreflooding experiments were ambient temperature (~70°F) and atmospheric pressure. The Berea cores utilized were 5.08 cm...

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