Method and apparatus for mud pulse telemetry

Communications: electrical – Wellbore telemetering or control

Reexamination Certificate

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C340S853200, C375S222000, C367S083000, C702S006000, C166S250010, C455S072000

Reexamination Certificate

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07068182

ABSTRACT:
A method and related apparatus for telemetry between downhole devices and surface devices. In particular, the methods and related apparatus may send a first datum of a first parameter in an uncompressed form, and send a second datum of the first parameter in compressed form.

REFERENCES:
patent: 5774420 (1998-06-01), Heysse et al.
patent: 6405136 (2002-06-01), Li et al.
patent: 6552962 (2003-04-01), Varsamis et al.
patent: 6564883 (2003-05-01), Fredericks et al.
patent: 6580751 (2003-06-01), Gardner et al.

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