An Evaluation of Geopressured Brine Injectability
We-have developed an apparatus with a capability for evaluating geopressured brine injectability at elevated pressures and temperatures. The apparatus utilizes membrane filters as injection zone reservoir analogs and permits injectability tests to be performed in accordance with Barkman and Davidson Methdology. A field evaluation of geopressured brine injectability was completed during September 22-25, 1980 at the DOE, Brazoria test site in Texas. Membrane filters, with pore sizes of 0.4-{micro}m and 10.0-{micro}m, were used as the basis for obtaining suspended solids data and for developing performance-life estimates of typical spent brine injection wells. Field measurements were made at 130{degree}C and line pressures up to 3800 psig. Scale inhibited (phosphonate-polyacrylate threshold-type, carbonate scale inhibitor), prefiltered-scale-inhibited, and raw (untreated) brine were evaluated. Test results indicated raw brine was highly injectable, while scale-inhibited brine had extremely low quality. The poor injectability of scale-inhibited brine resulted from partial precipitation of the scale inhibitor.
- Research Organization:
- Terra Tek, Inc., Salt Lake City, Utah
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AT03-80SF11459
- OSTI ID:
- 889103
- Report Number(s):
- SGP-TR-50-14
- Resource Relation:
- Conference: Proceedings, Sixth Workshop Geothermal Reservoir Engineering, Stanford University, Stanford, California, December 16-18, 1980
- Country of Publication:
- United States
- Language:
- English
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