Evaluation of testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5905776

Allman, D W; Goldman, D; Niemi, W L

Evaluating the Raft River and Boise, Idaho, resources by pump and injection tests requires information on the geology, geochemistry, surficial and borehole geophysics, and well construction and development methods. Nonideal test conditions and a complex hydrogeologic system prevent the use of idealized mathematical models for data evaluation in a one-phase fluid system. An empirical approach is successfully used since it was observed that all valid pump and injection well pressure data for constant discharge tests plotted as linear trends on semilogarithmic plots of borehole pressure versus time since pumping or injection began. Quantification of the pressure response prior to 600 minutes is not always possible. Short-duration (< 24-hour) injection or pump tests are conducted with the drilling rig equipment, and long-duration (21-day) injection and pump tests are then conducted with the permanent pumping facilities. Replicate instrumentation for pressure, temperature, and flow rates are necessary to ensure quality data. Water quality and monitor well data are also collected.

• Research Organization: Idaho National Engineering Lab., Idaho Falls (USA)
• DOE Contract Number: EY-76-C-07-1570
• OSTI ID: 5905776
• Report Number(s): CONF-790906-23
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
AQUIFERS
BOREHOLES
CAVITIES
CHEMISTRY
DRAWDOWN
ENGINEERING
ENVIRONMENTAL QUALITY
EVALUATION
FLOW RATE
GEOCHEMISTRY
GEOLOGY
GEOPHYSICS
GEOTHERMAL RESOURCES
Geothermal Legacy
HYDROLOGY
IDAHO
INJECTION WELLS
NORTH AMERICA
PACIFIC NORTHWEST REGION
PUMPING
RAFT RIVER VALLEY
REINJECTION
RESERVOIR ENGINEERING
RESERVOIR PRESSURE
RESOURCES
USA
WATER QUALITY
WELL PRESSURE
WELLS