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Dia•Com is a leading international provider of innovative, cost-effective molded diaphragm solutions critical to the operation of essential systems and equipment in industrial, automotive, aerospace, medical instrumentation, and food and water processing applications. The company's reputation for excellence is based on superior quality in the design, manufacture and application of its high-performance, state-of-the-art, fabric-reinforced and homogeneous elastomeric diaphragm seals.

Title: High temperature geothermal elastomer compound development
Creator/Author: Hirasuna, A.R.
Publication Date: 1981 Jan 01
OSTI Identifier: OSTI 7369347
Report Number(s): SAND-81-0036C; CONF-810105-
DOE Contract Number: None
Document Type: Conference
Specific Type: Technical Report
Coverage:
Resource Relation: Conference: International geothermal drilling and completions technology conference, Albuquerque, NM, USA, 21 Jan 1981; Related Information: In: Proceedings of the international conference on geothermal drilling and completion technology, by
Other Number(s):
Research Org: L'Garde, Inc., Newport Beech, CA
Sponsoring Org: Not Available
Subject: 15 GEOTHERMAL ENERGY; ELASTOMERS; MATERIALS TESTING; GEOTHERMAL WELLS; SEALING MATERIALS; DRILL BITS; TEMPERATURE EFFECTS; WELL CASINGS; DRILLING EQUIPMENT; EQUIPMENT; MATERIALS; POLYMERS; TESTING; WELLS
Keywords: Geothermal Legacy
Description/Abstract: Reliable casing packer seal elastomers for the unusually severe geothermal environment at 260/sup 0/C (500/sup 0/F) did not exist in 1976. L'Garde, Inc., was awarded a contract to fulfill this need by the United States Department of Energy. Successful development was completed in 1979. Compounds based on four different polymer systems were developed, all of which exceed the contract requirements. Successful laboratory tests above 300/sup 0/C (575/sup 0/F) have been performed with packer seals. Field tests to temperatures as high as 317/sup 0/C (603/sup 0/F) have been performed on static 0-rings in a cablehead. Successful, dynamic, drill bit seal tests were run with a presoak temperature of 288/sup 0/C (550/sup 0/F). The successful compounds are based on the following polymer systems: EPDM (Nordel), FKM (Viton), EPDM/FKM (Nordel/Viton) blend, and propylene-TFE (AFLAS). Evaluation was performed on full-scale packer seals as well as on 0-rings by L'Garde. L'Garde ran comparison tests against commercially available elastomers including Kalrez. Case experience with one or more of the developed compounds are presented. The applications cited include blowout preventors, dynamic drill bit seals, packers, and cableheads. Finally, an effort to actively transfer this technology to the industry is described.

 

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