# StimuFrac Compressibility as a Function of CO2 Molar Fraction

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.

#### Citation Formats

`Pacific Northwest National Laboratory. (2016). StimuFrac Compressibility as a Function of CO2 Molar Fraction [data set]. Retrieved from https://dx.doi.org/10.15121/1422769.`

`A., Carlos. `*StimuFrac Compressibility as a Function of CO2 Molar Fraction*. United States: N.p., 29 Apr, 2016. Web. doi: 10.15121/1422769.

`A., Carlos. `*StimuFrac Compressibility as a Function of CO2 Molar Fraction*. United States. https://dx.doi.org/10.15121/1422769

`A., Carlos. 2016. "StimuFrac Compressibility as a Function of CO2 Molar Fraction". United States. https://dx.doi.org/10.15121/1422769. https://gdr.openei.org/submissions/870.`

`@div{oedi_870, title = {StimuFrac Compressibility as a Function of CO2 Molar Fraction}, author = {A., Carlos.}, 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}, url = {https://gdr.openei.org/submissions/870}, journal = {}, number = , volume = , place = {United States}, year = {2016}, month = {04}}

`https://dx.doi.org/10.15121/1422769`

#### Details

Data from **Apr 29, 2016**

Last updated
**Oct 18, 2019**

Submitted
**Nov 18, 2016**

#### Organization

Pacific Northwest National Laboratory

#### Contact

Carlos A. Fernandez

509.371.7020

#### Authors

#### Keywords

geothermal, compressibility, StimuFrac, CO2, stimulation, carbon dioxide, hydraulic fracturing, mass fraction, fluid compressibility#### DOE Project Details

Project Name
**Reservoir Stimulation with Operational Monitory for Creation of Enhanced Geothermal Systems**

Project Lead
**Sean Porse**

Project Number
**FY16 AOP 1324**