Mark Charles Lee
Engineers at Player Crst Cir, Spring, TX

5826651, Oct 27, 1998

Jul 30, 1996

8/688651

Mark H. Lee - Spring TX
Thurman B. Carter - Houston TX
William A. Blizzard - Houston TX
Richard M. Ward - Houston TX

Weatherford/Lamb, Inc. - Houston TX

E21B 708, E21B 2906

1661176

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 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. A milling apparatus has been invented with milling apparatus for milling a tubular member and a nose cone releasably connected to the milling apparatus and releasably connectible to a diverter that directs the milling apparatus toward the tubular member. A nose cone for a milling apparatus has been invented with a body member, the body member having a mid portion, a top portion and a lower nose portion, and the top portion releasably securable to the milling apparatus and the lower nose portion releasably securable to a concave of a whipstock. A whipstock has been invented with a body member having an upwardly extending concave portion with a concave surface, and at least a portion of the concave surface contactable by a milling apparatus during a milling procedure covered with armor material.

6189618, Feb 20, 2001

Apr 20, 1998

9/063202

Robert S. Beeman - Bossier City LA
Mark Lee - Spring TX
Guy L. McClung - Spring TX
Stephen P. Breaux - Lafayette LA

Weatherford/Lamb, Inc. - Houston TX

E21B 2110

166312

A wash nozzle for wellbore washing operations has been invented, the wash nozzle, in one aspect having a central mandrel with a top, a bottom, and a fluid flow bore therethrough from top to bottom, at least one mandrel port through the central mandrel for fluid flow from within the central mandrel's fluid flow bore to an exterior of the central mandrel, a hollow sleeve rotatably mounted around the central mandrel, and at least one sleeve port through the sleeve for fluid flow from within the sleeve from the exterior of the central mandrel to an exterior of the sleeve, the at least one sleeve port defined by a wall on the sleeve. In one aspect the wash nozzle includes apparatus for selective rotation of the sleeve about the mandrel. In one aspect flow through the wash nozzle is stopped to effect sleeve rotation and, in one particular aspect, flow through the nozzle is then re-established. Methods have been invented using such wash nozzles for wellbore washing operations and/or cuttings removal.

5735359, Apr 7, 1998

Jun 10, 1996

8/660813

Mark H. Lee - Spring TX
Robert S. Beeman - Bossier City LA

Weatherford/Lamb, Inc. - Houston TX

E21B 1026

175269

A cutting tool has been invented for use in a wellbore to cut formation through which the wellbore extends or to cut items in the wellbore, the tool having, in one aspect, a body disposable at a desired location in the wellbore, at least one first blade pivotably mounted to the body at a first height on the body, at least one second blade pivotably mounted to the body at a second height on the body, the second height above the first height, the blades movable from a first position against the body to a second position extending out from the body for cutting, and the first blades shorter in length than the second blades.

5474126, Dec 12, 1995

May 16, 1994

8/243340

Gerald D. Lynde - Houston TX
Anthony D. Self - Houston TX
Mark H. Lee - Spring TX

Baker Hughes Incorporated - Houston TX

E21B 3313

1661176

A whipstock assembly is provided for lowering within a cased wellbore, cutting a window through a casing for drilling a sidetrack borehole, and retrieving with conventional fishing tools. The whipstock assembly includes two separate whipstocks having different tapers, and which are releasibly coupled for separately retrieving from the cased wellbore. A barrier member is provided to prevent a tapered face of one of the whipstocks from wedging debris between the whipstock and the casing.

5494111, Feb 27, 1996

May 13, 1994

8/242165

John P. Davis - Cypress TX
Gerald D. Lynde - Houston TX
Mark H. Lee - Spring TX
Arthur G. Alexander - Shreveport LA

Baker Hughes Incorporated - Houston TX

E21B 708, E21B 2300

166382

This invention relates to a permanent whipstock assembly which uses camming pivot arms to secure the whipstock at the desired location within a cased wellbore. Camming pivot arms are pivotally attached to the downhole end of a whipstock housing and are further attached to a slip pad. Intentionally induced relative movement of the slip pad and the whipstock housing causes the camming pivot arms to pivot in such a manner that slip pad housing 4 and slip pad 5 are forced away from each other and cammed into the cased borehole. The invention relates specifically to a device that is particularly adapted to be lowered through a small diameter and later to be activated and set in a much larger casing or hole diameter.