Fracturing-fluid evaluation (laboratory work). Geothermal-reservoir well-stimulation program
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 is described. The polymers tested were hydroxypropylguar (HP guar), hydroxyethylcellulose (HEC), carboxymethylcellulose (CMC), and XC Polymer. Also, two commercially available cross-linked HP guar systems were tested. 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 are covered. The fluids were tested at 150, 200 and 250/sup 0/C. 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 are covered.
- Research Organization:
- Republic Geothermal, Inc., Santa Fe Springs, CA (USA); Vetter Research, Costa Mesa, CA (USA)
- DOE Contract Number:
- AC04-79AL10563
- OSTI ID:
- 7097571
- Report Number(s):
- DOE/AL/10563-T14; ON: DE82021733
- Country of Publication:
- United States
- Language:
- English
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