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Oilfield Scale Featured Image

Oilfield Scale

The live stream will be a moderated free-flowing panel discussion focusing on oilfield scale technologies: treatments, prevention, measurement, simula

Oilfield Mineral Scale Prediction and Control at Extreme Conditions Featured Image

Oilfield Mineral Scale Prediction and Control at Extreme Conditions

The results of over 10,000 experiments from the past 150 years have been screened and scale prediction modeled for calcium, strontium, and barium sulfates, calcite, and halite using Pitzer theory of electrolyte activity coefficients combined with EOS-based VLE modeling by Prof. Vargas for hydrocarbons, acid gases, and water at various TDS values. In addition, several thousand density values versus T, P, and compositions were used to refine the Pitzer coefficients. All of this information is included in the software ScaleSoftPitzer, supported by a consortium of 26 oil and gas and service companies. A statistical argument related to measurement might be made that these calculated supersaturation results are as accurate as will ever be needed. A summary of these modeling results will be shown along with recent applications to controlling scale formation at HTHP, with some surprising results at HP.

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