Products tagged with 'geothermal'

View as

Sort by

Display per page

Available for download

Revolutionizing Non-Metallic GRE Tubulars in Downhole Applications: First Deployment of Hybrid Coupler in a Geothermal Well: Case Study

Product Number: MECC23-20002-SG

Author: Ralph El-Mir; Ghassan Zein; Adil al Mahasna

Publication Date: 2023

$20.00

As the petroleum and energy industries relentlessly push boundaries to achieve operational efficiency and sustainability, the materials they utilize come under increasing analysis. Historically dominated by metallic components, downhole applications are witnessing a transformative shift towards non-metallic composite material such as Glass Reinforced Epoxy (GRE) tubulars. These non-metallic solutions guarantees enhanced durability, cost-effectiveness, and resistance to the corrosive environment.

Available for download

Scaling Risk Assessment and Remediation in Geothermal Operations Using a Novel Theoretical Approach

Product Number: 51324-20701-SG

Author: Gaurav Das; Jerzy Kosinski; Ronald D. Springer; Andre Anderko

Publication Date: 2024

$40.00

Geothermal power holds immense potential as a renewable energy source with low emissions utilizing the Earth's natural heat to generate electricity. With growing concerns over climate change and the need for sustainable energy alternatives, geothermal power can provide energy independence, economic benefits, and versatility. Mineral scaling has been recognized as a major hindrance in seamless geothermal operations due to the harsh and diverse operating conditions, which can cause significant issues resulting in higher operating costs while reducing energy production's efficiency and overall economic feasibility. Therefore, there is a growing need for a tool that can help in designing preventive and remedial strategies against mineral scaling and, in effect, ensure seamless operation while reducing costs associated with equipment failure. A few of the most commonly occurring scales in geothermal operations across different regions are amorphous silica (SiO2), metal silicates, and calcite (CaCO3). Formulating an effective theoretical framework to identify the critical conditions and characteristics of scaling solids is imperative in devising preventive and/or remedial measures. This multi-faceted problem requires the simultaneous modeling of solution thermodynamics and kinetics. In this work, we propose a novel modeling scheme through the incorporation of the classical nucleation theory (CNT) with the Mixed-Solvent Electrolyte (MSE) thermodynamic model. While MSE assesses scaling risk based on the effective evaluation of the solution chemistry, CNT provides kinetic information, i.e., an estimate of induction time, based on the continuum thermodynamics treatment of clusters. This work focuses on applying the novel theoretical approach in providing accurate thermodynamic modeling of the scales and subsequent applications of the kinetic modeling in deriving remedial techniques. The theoretical framework aims to provide a consistent approach for testing various what-if scenarios and aid in making the best operational solution in the development of flow assurance.

Available for download

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 'geothermal'

Revolutionizing Non-Metallic GRE Tubulars in Downhole Applications: First Deployment of Hybrid Coupler in a Geothermal Well: Case Study

Scaling Risk Assessment and Remediation in Geothermal Operations Using a Novel Theoretical Approach

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

Association for Materials Protection and Performance