Products tagged with 'solubility'

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51318-10828-Modeling Mineral Scaling in Oil and Gas Environments up to Ultra High Pressures and Temperatures

Product Number: 51318-10828-SG

Author: M.M. Lencka, R.D. Springer, P. Wang and A. Anderko

Publication Date: 2018

$20.00

To address the need to predict scaling at conditions ranging from ambient to extreme, a thermodynamic model has been developed to represent the solubility of scaling minerals at temperatures up to 300 °C and pressures up to 1,700 atmospheres.

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Measuring Sodium Chloride, Salt and Soluble Contaminants

Product Number: 41216-964-SG

Author: Nico Frankhuizen

Publication Date: 2016

$20.00

This paper deals with the issue of surface contaminates analyses presently available on the market. The amount of variations of analyses and more important statements of the results cause great problems on the market. Described in the paper are not only the analyses possible, but also the interpretations belonging to them. However, salt measurements are used worldwide, its basics often appear to be a worldwide mystery. This paper should clarify the most common made mistakes.

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Silica Solubility in High Enthalpy Water up to 440°C in the Presence of NaCl

Product Number: 51324-21029-SG

Author: Morten Tjelta; Sissel Opsahl Viig

Publication Date: 2024

$40.00

In geothermal energy production, precipitation/scaling and potential plugging of wells is one of the major threats to flow assurance. Mitigation strategies should be considered at the design stage, but to do so knowledge about solubility across a relevant space of temperature, pressure and fluid composition is needed. In hot fluids, silica scaling is often found to be the major concern. Predictive models available in literature give good agreement with experimental values in the region where data are available, but there is limited data available at high temperatures and low pressures, in particular in the presence of salt. This work describes an experimental setup designed to carry out solubility experiments up to 500 °C and 400 bar. A main feature of the setup is the ability to dilute the sample fluid in the hot zone in order to avoid precipitation during sampling. Illustrations are given for how existing phase relations can be used to guide the execution of such high-pressure high-temperature experiments. Results of silica solubility experiments in the presence of NaCl up to 440 °C at 150-350 bar are presented. This work includes data at the steam side pseudocritical line (critical density isochor) where limited data is available in the literature. The experimental concept, with hot zone dilution to avoid precipitation during sampling, can be used to obtain fluid samples as a function of time. Although utilized in the current work for solubility experiments it should be equally applicable to corrosion studies.

Products tagged with 'solubility'

51318-10828-Modeling Mineral Scaling in Oil and Gas Environments up to Ultra High Pressures and Temperatures

Measuring Sodium Chloride, Salt and Soluble Contaminants

Silica Solubility in High Enthalpy Water up to 440°C in the Presence of NaCl

Association for Materials Protection and Performance