StimuFrac Compressibility as a Function of CO2 Molar Fraction
Abstract
Compressibility values were obtained in a range of pressures at 250degC by employing a fixed volume view cell completely filled with PAA aqueous solution and injecting CO2 at constant flow rate (0.3mL/min). Pressure increase as a function of supercritical CO2 (scCO2) mass fraction in the mixture was monitored. The plot shows the apparent compressibility of Stimufrac as a function of scCO2 mass fraction obtained in a pressure range between 2100-7000 psi at 250degC. At small mass fractions of scCO2 the compressibility increases probably due to the dissolution/reaction of CO2 in aqueous PAA and reaches a maximum at mCO2/mH2O = 0.06. Then, compressibility decreases showing a linear relationship with scCO2 mass fraction due to the continuous increase in density of the binary fluid associated to the pressure increase.
- Authors:
- Publication Date:
- Other Number(s):
- 870
- DOE Contract Number:
- FY16 AOP 1.3.2.4
- Product Type:
- Dataset
- Research Org.:
- DOE Geothermal Data Repository; Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)
- Subject:
- 15 Geothermal Energy
- Keywords:
- geothermal; compressibility; StimuFrac; CO2; stimulation; carbon dioxide; hydraulic fracturing; mass fraction; fluid compressibility
- OSTI Identifier:
- 1422769
- DOI:
- 10.15121/1422769
Citation Formats
Fernandez, Carlos A. StimuFrac Compressibility as a Function of CO2 Molar Fraction. United States: N. p., 2016.
Web. doi:10.15121/1422769.
Fernandez, Carlos A. StimuFrac Compressibility as a Function of CO2 Molar Fraction. United States. doi:10.15121/1422769.
Fernandez, Carlos A. 2016.
"StimuFrac Compressibility as a Function of CO2 Molar Fraction". United States. doi:10.15121/1422769. https://www.osti.gov/servlets/purl/1422769. Pub date:Fri Apr 29 00:00:00 EDT 2016
@article{osti_1422769,
title = {StimuFrac Compressibility as a Function of CO2 Molar Fraction},
author = {Fernandez, Carlos A.},
abstractNote = {Compressibility values were obtained in a range of pressures at 250degC by employing a fixed volume view cell completely filled with PAA aqueous solution and injecting CO2 at constant flow rate (0.3mL/min). Pressure increase as a function of supercritical CO2 (scCO2) mass fraction in the mixture was monitored. The plot shows the apparent compressibility of Stimufrac as a function of scCO2 mass fraction obtained in a pressure range between 2100-7000 psi at 250degC. At small mass fractions of scCO2 the compressibility increases probably due to the dissolution/reaction of CO2 in aqueous PAA and reaches a maximum at mCO2/mH2O = 0.06. Then, compressibility decreases showing a linear relationship with scCO2 mass fraction due to the continuous increase in density of the binary fluid associated to the pressure increase.},
doi = {10.15121/1422769},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {4}
}