Geothermal Reservoir Well Stimulation Program - Fracturing Fluid Evaluation (Laboratory Work)
This report describes work done to characterize by chemical methods the temperature/ time degradation behavior of polymer based fluids that may be used in stimulating geothermal wells by fracturing. The polymers tested were hydroxypropulguar (HP guar), hydroxethylcellulose (HEC), carboxymethylcellulose (CMC), and XC Polymer. Also two commercially available cross-linked HP guar systems were tested. The report covers the development of analytical techniques for characterizing the polymers and the results of static and dynamic high temperature aging of the polymers in various salt water environments. The fluids were tested at 150, 200, and 250{degree}C. The report covers the implications of these results based on the time/ temperature degradation of the polymers and the relative ease of removing the degraded polymer from a sandpack. [DJE-2005]
- Research Organization:
- Vetter Research Republic Geothermal, Inc., Santa Fe Springs, California
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-79AL10563
- OSTI ID:
- 860764
- Report Number(s):
- GRW-822z
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laboratory tests of polymer fluids at geothermal temperatures
Degradation of polymers used in geothermal fracturing