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:
Mar. 29, 1988
Filed:
Nov. 08, 1985
Applicant:
Inventor:
Oleg Kotlyar, Salt Lake City, UT (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04H / ; G01V / ;
U.S. Cl.
CPC ...
367 83 ; 367 84 ; 340861 ; 175 40 ;
Abstract
A logging-while-drilling tool includes a housing positioned in a drill string, a shaft journaled in the housing, a turbine stage or stages, a rotor or rotors, the latter mounted on the shaft outside of the housing and driven by the drilling fluid and a braking device for variably controlling the rotational speed of the rotor in order to produce pressure pulses which are transmitted to the surface through the drilling fluid. A generator or other energy storing device is provided to power an electronic package which interprets downhole conditions for transmission of the same as pressure pulses.