US Patent No: 5,333,686

Number of patents in Portfolio can not be more than 2000

Measuring while drilling system

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Abstract

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A measuring while drilling apparatus for use in the drilling of subterranean wells comprises a plurality of interconnected tubular housings which are insertable into and removable from a drill string by a wire line. A hollow plunger on the bottom of the apparatus is vertically shiftable with respect to a fixed diameter orifice disposed in the path of the drilling fluid flow. Fluid pressure forces derived from the drilling fluid effect the movement of the plunger forward and away from the orifice to create pressure pulses which are transmittable through the drilling fluid to the surface. Sensors provided in the housings generate signals, which are converted by a downhole controller, to effect the sequential generation of the positive pressure pulses to be indicated at the surface of the well by a digital readout of the outputs of the various sensors carried in the tubular housings.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
REUTER-STOKES, INC.TWINSBURG, OH17
ALLIEDSIGNAL INC.MORRISTOWN, NJ1728
QUALITY DRILLING TECHNOLOGY, INC.AUSTIN, TX1

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
More, Henry S Los Altos, CA 13 311
Vaughan, Susanne F Pflugerville, TX 3 20

Cited Art Landscape

Patent Info (Count) # Cites Year
 
COMPUTALOG LTD. (1)
5,103,430 Mud pulse pressure signal generator 21 1990
 
Exploration Logging, Inc. (1)
4,550,392 Apparatus for well logging telemetry 32 1982
 
Other [Check patent profile for assignment information] (1)
4,825,421 Signal pressure pulse generator 24 1986

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BAKER HUGHES INCORPORATED (3)
5,934,383 Steering device for steerable drilling tool 11 1997
8,162,080 Apparatus and methods for continuous coring 0 2008
8,011,454 Apparatus and methods for continuous tomography of cores 9 2008
 
NEWSCO DIRECTIONAL SUPPORT SERVICES INC. (3)
7,564,741 Intelligent efficient servo-actuator for a downhole pulser 2 2005
7,719,439 Rotary pulser 0 2006
8,203,908 Intelligent efficient servo-actuator for a downhole pulser 0 2008
 
JAPAN OIL, GAS AND METALS NATIONAL CORPORATION (2)
6,230,825 Apparatus for recovering core samples under pressure 9 2000
6,659,204 Method and apparatus for recovering core samples under pressure 14 2001
 
Aim Directional Services, LLC (1)
8,534,381 High LCM positive pulse MWD component 0 2013
 
ALBERTA INNOVATES - ENERGY AND ENVIRONMENT SOLUTIONS (1)
6,026,914 Wellbore profiling system 159 1998
 
ISUZU MOTORS LIMITED (1)
6,880,422 Shift actuator for a transmission 3 2003
 
NAVIGATE ENERGY SERVICES, LLC (1)
7,408,837 Measurement while drilling tool and method 1 2006
 
PRECISION ENERGY SERVICES LTD. (1)
5,660,238 Switch actuator and flow restrictor pilot valve assembly for measurement while drilling tools 7 1996
 
SONDEX LIMITED (1)
8,693,284 Apparatus for creating pressure pulses in the fluid of a bore hole 0 2007
 
TELEDRIFT ACQUISITION, INC. (1)
7,735,579 Measurement while drilling apparatus and method of using the same 6 2006
 
TELEDRIFT COMPANY (1)
8,474,548 Measurement while drilling apparatus and method of using the same 0 2012
 
Thomas Tools, Inc. (1)
6,016,288 Servo-driven mud pulser 22 1996
 
UPS AVIATION TECHNOLOGIES, INC. (1)
5,586,084 Mud operated pulser 47 1994
 
WEATHERFORD CANADA PARTNERSHIP (1)
6,002,643 Pulser 15 1997