CHARLES PLEASANTS
Architects at Maple Vlg Dr, Cypress, TX

2010008, Apr 8, 2010

Oct 6, 2008

12/246180

Gregory L. Hern - Porter TX, US
Charles W. Pleasants - Cypress TX, US

BAKER HUGHES INCORPORATED - Houston TX

E21B 23/00

166377, 166118

A downhole seal and anchor releasing device includes, a seal defeatable via a first pull, an anchor releasable via a second pull, and an energy dissipation device configured to dissipate enough energy from the first pull subsequent defeat of the seal to prevent release of the anchor in response to the first pull

5787978, Aug 4, 1998

Nov 19, 1996

8/752359

Thurman B. Carter - Houston TX
Paul J. Johantges - Deer Park TX
Charles W. Pleasants - Cypress TX

Weatherford/Lamb, Inc.

E21B 2300

1661176

The present invention discloses, in certain preferred aspects, a whipstock with a body with a top, a bottom, and a cavity in the body, a sacrificial element secured to the top of the body, the sacrificial element having at least one surface for abutment by a first mill moving down adjacent the whipstock to guide the first mill while the first mill mills a tubular in which the whipstock is positioned and the sacrificial element for inhibiting the mill from contacting the body, the first mill having a curved outer shape and a nose projecting downwardly therefrom, the nose having a nose shape, the cavity defined by sides of the body and having filler material therein, the sides of the body presenting a face for abutment by a second mill while the second mill moves down adjacent the whipstock to mill a window in the tubular, the face for guiding the second mill and inhibiting the second mill from contacting the body other than the sides thereof defining the cavity, the sacrificial element having a groove therein with a groove shape corresponding to the nose shape of the nose of the first mill, the sacrificial element made of readily millable material, the at least one surface of the sacrificial element for abutment by the first mill, the at least one surface including a curved surface having a curved shape corresponding to a curved outer shape of the first mill to enhance guiding contact between the first mill and the curved surface.

5887655, Mar 30, 1999

Jan 30, 1997

8/790543

David M. Haugen - League City TX
William A. Blizzard - Houston TX
Mark W. Schnitker - Friendswood TX
Steve R. Delgado - Houston TX
Thurman B. Carter - Houston TX
John D. Roberts - Spring TX
Joseph D. Mills - Houston TX
Frederick T. Tilton - Spring TX
Paul J. Johantges - Deer Park TX
Charles W. Pleasants - Cypress TX

Weatherford/Lamb, Inc - Houston TX

E21B 2900

166298

Wellbore operations (e. g. for milling and/or drilling) are disclosed which require a reduced number of tool trips into a wellbore to create a cut-out pocket, opening, or window in a tubular such as casing in the wellbore; and, in some aspects, to continue into a formation adjacent a main wellbore forming a lateral wellbore in communication with the main wellbore. Preferably one trip is required to complete a window or a window and the lateral wellbore. In one aspect a full gauge tool body is used so that the completed lateral wellbore is of a substantially uniform diameter along its entire length, which, in one aspect is suitable for the passage therethrough of full gauge tools, pipe, devices, and apparatuses. In one aspect a cutting system has cutting apparatus initially covered with a wearable away material which is worn away by contacting a tubular to be milled, exposing the cutting apparatus for milling and/or for drilling formation adjacent the wellbore. In certain aspects the lateral wellbore is: about one foot long; two feet long or less; five feet long or less; between five feet and fifty feet long; one hundred feet long or less; between about one hundred and about two hundred feet long; or two hundred or more feet long.

5806595, Sep 15, 1998

May 2, 1996

8/642118

Dale E. Langford - Lafayette LA
Robert E. Robertson - Bakersfield CA
Charles W. Pleasants - Cypress TX
Thurman B. Carter - Pearland TX
Guy L. McClung - Spring TX

Weatherford/Lamb, Inc. - Houston TX

E21B 4311

166298

A method for milling an opening, slot, hole, or window in a tubular of a tubular string in a wellbore, has been invented which includes installing a mill system in the tubular at a desired milling location, and milling an opening in the tubular. In one aspect the method includes using a mill which has a weight member below the mill, above the mill, or both. In one aspect additional weight is added to the weight member once it has been introduced into the tubular string.

7905279, Mar 15, 2011

Apr 15, 2008

12/103023

Daniel R. Hart - Sugar Land TX, US
Roy E. Swanson - Sugar Land TX, US
Kjell Nygardsvoll - Stavanger, NO
Songfeng Yang - Cypress TX, US
Christopher W. Guidry - Spring TX, US
Charles W. Pleasants - Cypress TX, US

Baker Hughes Incorporated - Houston TX

E21B 7/04

1661776

A combination whipstock and seal bore diverter system includes a whipstock; and a diverter configured to receive and support the whipstock in a selected orientation, the system being installable in a single run in a borehole.

2011031, Dec 29, 2011

Jun 29, 2010

12/826020

James Alan Crider - Houston TX, US
Gregory L. Hern - Porter TX, US
Charles W. Pleasants - Cypress TX, US

Baker Hughes Incorporated - Houston TX

E21B 34/14

166329

A tool for use in a wellbore which includes a housing having an axial flow bore and a piston sleeve moveably disposed within the flow bore. The tool is moveable between first and second operating positions by an actuation mechanism having a piston with a ball seat. The tool can be moved between first and second operating positions with the use of actuating balls of different sizes that can be landed upon the ball seat.

5720349, Feb 24, 1998

Oct 12, 1995

8/542439

Charles W. Pleasants - Cypress TX
Thurman B. Carter - Houston TX

Weatherford U.S., Inc. - Houston TX

E21B 708, E21B 2900

166298

A new mill has been invented which has a body, a fluid flow bore therethrough, and apparatus therein for selectively controlling the flow of fluid through the bore. In one aspect the mill is a starting mill connected to a whipstock and controlled flow of fluid through the mill results in setting of an anchor device or anchor packer below the whipstock. In one aspect the mill is initially filled with fluid and apparatus is provided in the mill to permit controlled fluid leakage from within the mill. In another aspect the mill has apparatus thereon for isolating a shear stud from a downward force imposed on the mill, the shear stud releasably connecting the mill to a whipstock.

2012021, Aug 23, 2012

Feb 17, 2011

13/029266

Aubrey C. Mills - Magnolia TX, US
Basil J. Joseph - Sugar Land TX, US
Ammar A. Munshi - Sugar Land TX, US
Keven O'Connor - Houston TX, US
Charles W. Pleasants - Cypress TX, US

BAKER HUGHES INCORPORATED - Houston TX

E21B 23/00

166180

An actuator and method for setting a subterranean tool uses an externally mounted actuator on a tubular string that is operably engaged to the tool to be actuated. At the desired location for actuation a signal is given to a valve assembly. The opening of the valve releases the pressurized compressible fluid against a floating piston. The piston drives viscous fluid ahead of itself through the now open valve that in turn drives an actuating piston whose movement sets the tool. The triggering mechanism to open the valve can be a variety of methods including an acoustic signal, a vibration signal, a change in magnetic field, or elastic deformation of the tubular wall adjacent the valve assembly.

6059037, May 9, 2000

Jun 30, 1998

9/107011

James R. Longbottom - Whitesboro TX
Tom P. Wilson - Stavanger, NO
Charles Pleasants - Cypress TX
William Blizzard - Houston TX
Gene Halford - Rosharon TX
Douglas Durst - Katy TX

Halliburton Energy Services, Inc. - Houston TX

E21B 2906

166298

Apparatus and associated methods of using same provide ease of forming an opening through a laterally extending liner to thereby provide access to a portion of a parent wellbore across which the liner extends. In a preferred embodiment, a milling guide has a guide profile formed thereon for directing a cutting tool to contact the liner. The milling guide is cooperatively engageable with an anchor to axially and radially align the guide profile with a portion of the liner which extends across the parent wellbore.

6056056, May 2, 2000

Jan 18, 1998

9/008614

Douglas G. Durst - Katy TX
Robert E. Robertson - Tomball TX
Thurman B. Carter - Houston TX
Paul J. Johantges - Deer Park TX
Charles W. Pleasants - Cypress TX
William A. Blizzard - Houston TX
Dale E. Langford - Lafayette LA
Guy L. McClung - Spring TX

E21B 2900

166298

Wellbore apparatus has been invented that includes a whipstock with a top and a bottom, the whipstock disposed in a wellbore extending down from an earth surface into the earth, the wellbore having an inner surface, a mill guide with a body having an upper end, a lower end, and a channel therethrough from the upper end to the lower end, and a portion of the lower end of the mill guide disposed between and held between the inner surface of the wellbore and an outer surface of the top of the whipstock. A method for stabilizing a mill guide in a wellbore extending from an earth surface into the earth has been invented, the wellbore having an inner surface, the method including setting a whipstock at a location in the wellbore, the whipstock having a top and a bottom, moving a mill guide down into the wellbore to contact the whipstock, the mill guide having a body with an upper end, a lower end, and a channel therethrough from the upper end to the lower end, and positioning the mill guide so that a portion of the lower end of the mill guide is stabilizinglyconnected to and/or received and held between the inner surface of the wellbore and an outer surface of the top of the whipstock. A method has been invented for milling within a whipstock set in a wellbore extending from an earth surface down into the earth, the whipstock having a body with a top and a bottom, the method including introducing a mill guide into the wellbore above the whipstock, moving the mill guide into stabilizing contact with the whipstock, the mill guide having a top and a bottom and a channel therethrough from top to bottom, guiding a mill with the mill guide to mill down into the whipstock and through at least a longitudinal portion thereof, the mill having at least a portion thereof in contact with the mill guide while milling the at least a longitudinal portion of the whipstock.