High-Temperature Motor Windings for Downhole Pumps Used in Geothermal Energy Production

[摘要] The development of highly reliable downhole equipment is an essential element in enabling the widespread utilization of Enhanced Geothermal Systems (EGS). The downhole equipment used in these systems will be required to operate at high voltages and temperatures on the order of 200 to 250°C (and eventually to 300˚C). These conditions exceed the practical operating ranges of currently available thermoplastic wire insulations, and thus limit the operating lifetime of tools such as Electric Submersible Pumps (ESPs). In this work, high-temperature insulations based on composite materials were developed and demonstrated. The products of this work were found to exhibit electrical resistivities and dielectric breakdown strengths that PEEK at temperatures above 250C. In addition, sub-scale motor windings were fabricated and tested to validate the performance of this technology

[发布日期] 2010-12-31 [发布机构] Composite Technology Development, Inc.

[关键词] Electrical Insulation, Composite Insulation, Electric Submersible Pumps, Geothermal Energy;Breakdown;Geothermal Energy;36 Materials Science;Dielectric Materials