E-Spectrum Technologies continues to be on the forefront of new technology development in the area of through-the-earth communication technology.  Not only have we refined the fundamentals of this type of system design, we also conduct internal research and testing on new technologies to improve reliability and extend the operational depth of EM based systems. From expert consultation to complete product design, our knowledge and practical understanding of this area makes us one of the top ranked independent technology companies in the world focusing on EM MWD design, manufacturing, methodologies, and technologies.

EM Downhole Telemetry


12725 Spectrum Drive

San Antonio, TX  78249


T: (844) 693-8665 (844-MWDTOOL)
F: 210-696-0770

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Drill Dog is a Tradmark of E-Spectrum Technologies Oil & Gas LLC all rights resered