1
John B Weirich, Ronald G Bland, William W Smith Jr, Volker Krueger, John W Harrell, Hatem N Nasr, Valeri Papanyan: Drilling systems with sensors for determining properties of drilling fluid downhole. Baker Hughes Incorporated, Madan Mossman & Sriram P C, January 23, 2001: US06176323 (249 worldwide citation)

The present invention provides a drilling system for drilling oilfield boreholes or wellbores utilizing a drill string having a drilling assembly conveyed downhole by a tubing (usually a drill pipe or coiled tubing). The drilling assembly includes a bottom hole assembly (BHA) and a drill bit. The bo ...


2
James V Leggett III, Vladimir Dubinsky, John W Harrell, William Thomas Balogh, Paul J G Seaton, Andrew G Brooks, Roger P Herbert: Drilling system with an acoustic measurement-while-driving system for determining parameters of interest and controlling the drilling direction. Baker Hughes Incorporated, Madan Mossman & Sriram P C, July 11, 2000: US06088294 (245 worldwide citation)

The present invention provides a system for drilling boreholes having a downhole subassembly which contains an acoustic measurement-while-drilling system. The acoustic system contains an acoustic transmitter and receiver for determining the acoustic velocity through the formations surrounding the bo ...


3
James V Leggett III: Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers. Baker Hughes Incorporated, Madan Mossman & Sriram P C, July 4, 2000: US06084826 (203 worldwide citation)

This invention is directed toward apparatus and methods for obtaining acoustic measurements or "logs" of earth formations penetrated by a borehole. More particularly, the invention is directed toward obtaining the acoustic measurements while the borehole is being drilled. The downhole apparatus comp ...


4
Paulo Tubel, Brian Bidigare, Michael Johnson, John Harrell, Benn Voll: Monitoring of downhole parameters and tools utilizing fiber optics. Baker Hughes Incorporated, Madan Mossman & Sriram P C, July 8, 2003: US06588266 (202 worldwide citation)

The present invention provides systems utilizing fiber optics for monitoring downhole parameters and the operation and conditions of downhole tools. In one system fiber optics sensors are placed in the wellbore to make distributed measurements for determining the fluid parameters including temperatu ...


5
Roger Fincher, Larry Watkins, Friedhelm Makohl, Detlef Hahn: Method and apparatus for drilling boreholes in earth formations (drilling liner systems). Baker Hughes Incorporated, Madan Mossman & Sriram P C, March 6, 2001: US06196336 (187 worldwide citation)

A drilling liner having a core bit at its bottom end is carried along with a pilot bit on an inner bottom hole assembly driven by a downhole mud motor. In one embodiment, the motor is powered by mud carried by an inner string. Alternatively, the inner string may be omitted and the flow of mud throug ...


6
Paulo S Tubel, Glynn Williams, Michael H Johnson, John W Harrell, Jeffrey J Lembcke, Kurt A Hickey, Nigel Leggett: Monitoring of downhole parameters and tools utilizing fiber optics. Baker Hughes Incorporated, Madan Mossman & Sriram P C, August 28, 2001: US06281489 (170 worldwide citation)

This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for surface treatments are measured in ...


7
Edward J Zisk Jr: Sand screen with active flow control and associated method of use. Baker Hughes Incorporated, Madan Mossman & Sriram P C, September 23, 2003: US06622794 (170 worldwide citation)

Apparatus and methods are disclosed for actively controlling the flow of hydrocarbon fluids from a producing formation at the downhole sand screen. A preferred embodiment of the invention provides a fluid flow annulus within the production tube inside of the screen. In a first flow control configura ...


8
Vladimir Dubinsky, James V Leggett III, Alexi Bolshakov: Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries. Baker Hughes Incorporated, Madan Mossman & Sriram P C, July 30, 2002: US06427124 (169 worldwide citation)

The present invention provides a system for drilling boreholes having a downhole subassembly which contains an acoustic measurement-while-drilling system. It uses the acoustic velocity through the formations surrounding the borehole and an acoustic transmitter and a set of receivers for determining ...


9
Detlef Hahn, Friedhelm Makohl: Apparatus and method for simultaneous drilling and casing wellbores. Baker Hughes Incorporated, Madan Mossman & Sriram P C, July 16, 2002: US06419033 (168 worldwide citation)

The present invention provides apparatus and method for drilling a wellbore wherein a pilot wellbore section is drilled with a bit which section is enlarged by a trailing underreamer to the desired size. One or more steering sections between the underreamer and the drill bit are utilized for maintai ...


10
Benn Voll, Michael H Johnson, John W Harrell: Flow control apparatus and methods. Baker Hughes Incorporated, Madan Mossman & Sriram P C, September 5, 2000: US06112817 (161 worldwide citation)

The present invention provides a method for obtaining equalized production from deviated wellbores. A plurality of spaced apart flow control device are deployed along the length of the wellbore. The fluid from various zones are drawn in a manner that depletes the reservoir uniformly along the entire ...



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