The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2010
Filed:
Dec. 24, 1999
Lloyd D. Clark, Jr., Cedar Park, TX (US);
Joseph M. Steiner, Jr., Austin, TX (US);
Suzanne D. Richardson, Austin, TX (US);
Ramon Hernandez-marti, Austin, TX (US);
Terry L. Mayhugh, Round Rock, TX (US);
Bart J. Bombay, Austin, TX (US);
John A. Booker, Austin, TX (US);
Gilbert R. Martinez, Georgetown, TX (US);
Lloyd D. Clark, Jr., Cedar Park, TX (US);
Joseph M. Steiner, Jr., Austin, TX (US);
Suzanne D. Richardson, Austin, TX (US);
Ramon Hernandez-Marti, Austin, TX (US);
Terry L. Mayhugh, Round Rock, TX (US);
Bart J. Bombay, Austin, TX (US);
John A. Booker, Austin, TX (US);
Gilbert R. Martinez, Georgetown, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A wireline telemetry system and method of transmitting data on multiple carrier frequencies. The system and method adjust power level and number of bits-per-carrier to optimally or near-optimally utilize the capacity of the wireline cable. Due to the nature of wireline telemetry the overall power level is restricted only by the output capability of the downhole telemetry cartridge and the input power restrictions of the uphole telemetry unit receiver. The optimal power level is determined during a training sequence and is a function of such factors as cable length, cable material, cable temperature and cable geometry. The uplink and downlink transmission are executed using different modulation techniques.