Weatherford/lamb, Inc.

Baker Hughes Corporation

Weatherford Technology Holdings, LLC

Gregory R Nazzal

Richard Lee Giroux

David J Brunnert

Tuong Thanh Le

Gregory Guy Galloway

Raymond H Jackson

James C Swarr

William M Beasley

Albert C Odell, Ii

Brent James Lirette

Jim B Terry

Mike Wardley

Samir Alkhatib

Dave McKay

Gerald D Lynde

Paulo S Tubel

John W Harrell

James V Leggett, Iii

Jim Terry

David Mckay

Albert C Odell

William M p/o PESSA Co Ltd Beasley

Apparatus and methods for drilling with casing. In an embodiment, methods and apparatus for deflecting casing using a diverter apparatus are disclosed. In another embodiment, the apparatus comprises a motor operating system disposed in a motor system housing, a shaft operatively connected to the motor operating system, the shaft having a passageway, and a divert assembly disposed to direct fluid flow selectively to the motor operating system and the passageway in the shaft. In another aspect, methods and apparatus for directionally drilling a casing into the formation are disclosed. Methods and apparatus for measuring the trajectory of a wellbore while directionally drilling a casing into the formation are also described.

Apparatus and methods for drilling a wellbore using casing

The present invention provides a downhole cutting tool for cutting materials at a worksite in a wellbore. The cutting tool includes a cutting end that is adapted to discharge a high pressure fluid therefrom. A power unit in the tool includes a plurality of serially arranged pressure stages, wherein each such stage increases the fluid pressure above its preceding stage until the desired high pressure has been obtained. The high pressure fluid is discharged through the cutting end to effect cutting of a material. A pulsar in the tool is provided to pulse the fluid before it is discharged through the nozzle, which enables the use of lower pressure compared to the pressure required without pulsation of the fluid. A control unit controls the position and orientation of the cutting end relative to the material and may be programmed to cut the material according a predetermined pattern provided to the control unit. An imaging device may be included in the downhole cutting tool to obtain images of the worksite prior to and after the cutting operations.

System for cutting materials in wellbores

The present invention provides a downhole service tool for imaging a location constituting a work site of interest downhole at which a tool operation is to be performed in a preexisting wellbore and for performing a tool operation at the work site during a single trip of the tool, The downhole service tool includes an imaging device which sensors properties associated with the work site and generates data representative of the work site. The imaging date is transmitted to the surface via a two-way telemetry system. An end work device in the downhole service tool performs the desired tool operation at the desired work site. The service tool images the work site, communicates imaging data to the surface and performs the desired operation during a single trip into the wellbore.

Apparatus and method for performing imaging and downhole operations at a

Growing community of inventors

Kingwood, TX, United States of America

Gregory R Nazzal