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

Abstract

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.

Publication Date:
Research Org.:
Republic Geothermal, Inc., Santa Fe Springs, CA (USA)
OSTI Identifier:
6852571
Alternate Identifier(s):
OSTI ID: 6852571
Report Number(s):
DOE/AL/10563-T8(Vol.2)
DOE Contract Number:
AC32-79AL10563
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; GEOTHERMAL WELLS; PROPPING AGENTS; PERFORMANCE TESTING; ALUMINIUM OXIDES; BAUXITE; CORUNDUM; DENSITY; HYDRAULIC FRACTURING; MECHANICAL PROPERTIES; PERMEABILITY; PHYSICAL PROPERTIES; SAND; STRESSES; WELL STIMULATION; ALUMINIUM COMPOUNDS; ALUMINIUM ORES; CHALCOGENIDES; COMMINUTION; FRACTURING; MINERALS; ORES; OXIDES; OXYGEN COMPOUNDS; STIMULATION; TESTING; WELLS Geothermal Legacy 150906* -- Geothermal Engineering-- Reservoir Stimulation & Extraction Technology

Citation Formats

Not Available. Geothermal fracture stimulation technology. Volume II. High-temperature proppant testing. United States: N. p., 1980. Web. doi:10.2172/6852571.
Not Available. Geothermal fracture stimulation technology. Volume II. High-temperature proppant testing. United States. doi:10.2172/6852571.
Not Available. Tue . "Geothermal fracture stimulation technology. Volume II. High-temperature proppant testing". United States. doi:10.2172/6852571. https://www.osti.gov/servlets/purl/6852571.
@article{osti_6852571,
title = {Geothermal fracture stimulation technology. Volume II. High-temperature proppant testing},
author = {Not Available},
abstractNote = {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.},
doi = {10.2172/6852571},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 1980},
month = {Tue Jul 01 00:00:00 EDT 1980}
}

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