Geothermal fracture stimulation technology. Volume II. High-temperature proppant testing

Technical Report · Tue Jul 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/6852571· OSTI ID:6852571

Data were obtained from a newly built proppant tester, operated at actual geothermal temperatures. The short term test results show that most proppants are temperature sensitive, particularly at the higher closure stresses. Many materials have been tested using a standard short-term test, i.e., fracture-free sand, bauxite, and a resin-coated sand retained good permeability at the high fluid temperatures in brine over a range of closure stresses. The tests were designed to simulate normal closure stress ranges for geothermal wells which are estimated to be from 2000 to 6000 psi. Although the ultra high closure stresses in oil and gas wells need not be considered with present geothermal resources, there is a definite need for chemically inert proppants that will retain high permeability for long time periods in the high temperature formations.

• Research Organization: Republic Geothermal, Inc., Santa Fe Springs, CA (USA)
• DOE Contract Number: AC32-79AL10563
• OSTI ID: 6852571
• Report Number(s): DOE/AL/10563-T8(Vol.2)
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150906* -- Geothermal Engineering-- Reservoir Stimulation & Extraction Technology
ALUMINIUM COMPOUNDS
ALUMINIUM ORES
ALUMINIUM OXIDES
BAUXITE
CHALCOGENIDES
COMMINUTION
CORUNDUM
DENSITY
FRACTURING
GEOTHERMAL WELLS
Geothermal Legacy
HYDRAULIC FRACTURING
MECHANICAL PROPERTIES
MINERALS
ORES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PERMEABILITY
PHYSICAL PROPERTIES
PROPPING AGENTS
SAND
STIMULATION
STRESSES
TESTING
WELL STIMULATION
WELLS