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Featured researches published by Carl Dodge.


Journal of the Acoustical Society of America | 1983

Methods and apparatus for acoustic logging in earth formations

Carl Dodge

An acoustic well logging system is provided for measuring the speed of propagation of all acoustic wave propagation modes of earth formations penetrated by a borehole simultaneously. A linearly changing frequency swept acoustic signal is generated and received at a spaced distance apart in a borehole. The received signal is mixed in a product forming device with the transmitted signal. Mixer product signals are low pass filtered to remove high frequency components and the resultant signals spectrum analyzed. Frequency spectra components may then be interpreted directly in terms of speed of propagation of various acoustic energy wave propagation modes.


Archive | 1999

High-power well logging method and apparatus

Gary K. Baird; Carl Dodge; Thomas E. Henderson; Francisco Velasquez


Archive | 1981

In situ measurement of gas content in formation fluid

Harry D. Smith; Carl Dodge


Archive | 2001

Downhole telemetry system having discrete multi-tone modulation and dynamic bandwidth allocation

Bruce S. Huckaba; Geoff Nightingale; Carl Dodge; Wallace R. Gardner; Myrick L. Monroe


Archive | 2006

Standoff compensation for imaging in oil-based muds

Luis E. San Martin; Humberto E. Houston Rosa; Raj Pai; William J. Schaecher; Myrick L. Monroe; Marian Morys; Carl Dodge


Archive | 2004

Priority data transmission in a wireline telemetry system

Homi Phiroze Cooper; Carl Dodge; Clovis S. Bonavides; Alberto Quintero; Wallace R. Gardner


Archive | 2003

Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation

Carl Dodge; Wallace R. Gardner


Archive | 2005

Shunt regulation apparatus, systems, and methods

Carl Dodge


Archive | 2004

Downhole telemetry system having discrete multi-tone modulation with QAM fallback

Alberto Quintero; Carl Dodge; Homi Phiroze Cooper; Wallace R. Gardner


Archive | 2005

Time-domain signal cancellation in downhole telemetry systems

Carl Dodge

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