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Title: EM Telemetry Tool for Deep Well Drilling Applications

This final report discusses the successful development and testing of a deep operational electromagnetic (EM) telemetry system, produced under a cooperative agreement with the United States Department of Energy's National Energy Technology Laboratory. This new electromagnetic telemetry system provides a wireless communication link between sensors deployed deep within oil and gas wells and data acquisition equipment located on the earth's surface. EM based wireless telemetry is a highly appropriate technology for oil and gas exploration in that it avoids the need for thousands of feet of wired connections. In order to achieve the project performance objectives, significant improvements over existing EM telemetry systems were made. These improvements included the development of new technologies that have improved the reliability of the communications link while extending operational depth. A key element of the new design is the incorporation of a data-fusion methodology which enhances the communication receiver's ability to extract very weak signals from large amounts of ambient environmental noise. This innovative data-fusion receiver based system adapts advanced technologies, not normally associated with low-frequency communications, and makes them work within the harsh drilling environments associated with the energy exploration market. Every element of a traditional EM telemetry system design, from power efficiencymore » to reliability, has been addressed. The data fusion based EM telemetry system developed during this project is anticipated to provide an EM tool capability that will impact both onshore and offshore oil and gas exploration operations, for conventional and underbalanced drilling applications.« less
Authors:
Publication Date:
OSTI Identifier:
877382
DOE Contract Number:
FC26-02NT41656
Resource Type:
Technical Report
Research Org:
E-Spectrum Technologies, Incorporated
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; APPROPRIATE TECHNOLOGY; COMMUNICATIONS; DATA ACQUISITION; DESIGN; DRILLING; EFFICIENCY; EXPLORATION; MARKET; NATURAL GAS WELLS; PERFORMANCE; RELIABILITY; TELEMETRY; TESTING; WELL DRILLING