DEVELOPMENT AND EVALUATION OF ELASTOMERIC MATERIALS FOR GEOTHERMAL APPLICATIONS

摘要

This report covers the second year of the Jet Propulsion Laboratory's development and evaluation of elastomers for geothermal applications. The first year's work was described in JPL Publication 78-69 and also in a paper presented to the American Institute of Chemical Engineers In June 1978. A copy of the latter is included, by way of review, as Appendix A to this report.nThe research involves formulation of commercially available materials and synthesis of new elastomers. In the present report period, formulation studies at JPL and elsewhere produced a material having about 250-350 psi tensile strength and 30-802 elongation at 260°C for at least 24 hours in simulated brine. The relationship between these laboratory test results and sealing performance in actual or simulated test conditions is not entirely clear;however, it is believed that no conventional formation or casing packer design is likely to perform well using these materials.