Weatherford/lamb, Inc.

Weatherford Technology Holdings, LLC

Shell Oil Comapny

David J. Brunnert

Gregory G. Galloway

David J Brunnert

Gregory Guy Galloway

David Michael Haugen

Frederick Thomas Tilton

Brent James Lirette

Richard Lee Giroux

Albert C Odell, Ii

David Pavel

Tuong Thanh Le

Joe Noske

Thomas Floyd Bailey

Michael Brian Grayson

Andrew Antoine

Thurman B Carter

Paul L Smith

Ram Kumar Bansal

David Iblings

Thomas M Redlinger

Richard J Segura

Gregory R Nazzal

William M Beasley

James C Swarr

Raymond H Jackson

Simon John Harrall

Mike Wardley

Jim B Terry

Samir Alkhatib

Dave McKay

Mike A Luke

Patrick Glen Maguire

Paul Smith

Wei Xu

Mark J Murray

Peter Barnes Moyes

David W Teale

Kevin Leon Gray

Gary Duron Ingram

Robert P Badrak

Neil A A Simpson

Michael J Moody

Tommy Laird

Adrian Steiner

Christopher M Vreeland

R K Bansal

Ramkumar K Bansal

John Christopher Jordan

Richard J Todd

Darcy Nott

Kevin Schmigel

Gary Belcher

Jim Stanley

Tom Fuller

Michael Moody

Albert C Odell

Clark E Robison

Kevin W Smith

Ghazi J Hashem

Charles Gerard Brunet

Clayton Plucheck

Shane P Hart

James G Martens

Michel Bouchard

Graham Alexander Skinner

Doug Durst

Mark A Mitchell

R Lee Colvard

Darrell Johnson

John W Kochera

Evan Lowe

Melissa Frilot

Tim Hanberry

Michael W Henson

Guy LaMonte McClung, Iii

James Ken Whanger

Roy W Rooyakkers

Gregory Gerard Gaspard

John Robert Gradishar

Abdolreza Gharesi

Brian Grayson

Thurman H Carter

William M p/o PESSA Co Ltd Beasley

Jim Terry

Thomas Laird

Albert C Ii Odell

Wei Jake Xu

Ii Albert C Odell

Richard Segura

Thomas Bailey

A mill for use in a wellbore includes a tubular housing having a bore therethrough, a plurality of pockets formed in a wall thereof, and a blade disposed in each pocket. Each blade includes a body having a first side opposite a second side, wherein the first side faces in a direction of rotation of the mill. The blade also includes a blade portion disposed on the first side of the body, wherein the blade portion has a first cutting face stepped relative to a second cutting face. Each blade is movable between a retracted position and an extended position, wherein a portion of the first side and the second side protrude from the housing in the extended position.

Section mill and method for abandoning a wellbore

A method for milling a tubular cemented in a wellbore includes deploying a bottomhole assembly (BHA) into the wellbore through the tubular, the BHA comprising a window mill; and extending arms of the window mill and radially cutting through the tubular, thereby forming a window through the tubular, wherein a body portion of each window mill arm engages and stabilizes from an inner surface of the tubular after a blade portion of each window mill arm cuts through the tubular.

The present invention relates methods and apparatus for lining a wellbore. In one aspect, a drilling assembly having an earth removal member and a wellbore lining conduit is manipulated to advance into the earth. The drilling assembly includes a first fluid flow path and a second fluid flow path. Fluid is flowed through the first fluid flow path, and at least a portion of which may return through the second fluid flow path. In one embodiment, the drilling assembly is provided with a third fluid flow path. After drilling has been completed, wellbore lining conduit may be cemented in the wellbore.

Methods and apparatus for wellbore construction and completion

The present invention embodies a drill pipe in which various damaged sections of the pipe are repaired in order to maintain or improve the wear and buckle resistance of the drill pipe. The sections are strengthened using various hardening methods such as heat treatment processes and/or expansion techniques. A sleeve can also be applied to the strengthened portions. Surface enhancers, such as hardbanding, can be applied to the strengthened portions or the sleeve in order to provide abrasion resistance or to reduce friction.

Repaired wear and buckle resistant drill pipe and related methods

Embodiments of the present invention include methods and apparatus for dynamically controlling pressure within a wellbore while forming the wellbore. In one aspect, one or more pressure control apparatus are used to maintain desired pressure within the wellbore while drilling the wellbore. In another aspect, pressure is dynamically controlled while drilling using foam to maintain a substantially homogenous foam flow regime within the wellbore annulus for carrying cuttings from the wellbore.

Managed pressure drilling

Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member, such as a flapper, that is disposed in a housing of the DDV and is designed to close against a seat within the housing. The DDV includes an operating mechanism for opening/closing the DDV. In use, pressure in one portion of a well that is in fluid communication with a well surface may be bled off and open at well surface while maintaining pressure in another portion of the casing string beyond the DDV.

Downhole deployment valves

Embodiments of the present invention generally relate to extendable cutting tools for use in a wellbore. In one embodiment, a tool for use in a wellbore includes a tubular body having a bore therethrough, an opening through a wall thereof, and a connector at each longitudinal end thereof; and an arm. The arm is pivotally connected to a first piston and rotationally coupled to the body, is disposed in the opening in a retracted position, and is movable to an extended position where an outer surface of the arm extends outward past an outer surface of the body. The tool further includes the first piston. The first piston is disposed in the body bore, has a bore therethrough, and is operable to move the arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening. The tool further includes a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock.

Extendable cutting tools for use in a wellbore

Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member such as a flapper that is disposed in a housing of the DDV and is designed to close against a seat within the housing. The DDV includes an operating mechanism for opening/closing the DDV. In use, pressure in one portion of a well that is in fluid communication with a well surface may be bled off and open at well surface while maintaining pressure in another portion of the casing string beyond the DDV.

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

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Cypress, TX, United States of America

David J Brunnert