Michael W Luke

US Patent:

60706708, Jun 6, 2000

Filed:

Apr 1, 1998

Appl. No.:

9/053588

Inventors:

Thurman B. Carter - Houston TX
Michael Luke - Houston TX
John D. Roberts - Spring TX

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

E21B 1707
E21B 2900

US Classification:

166381

Abstract:

A wellbore motion control apparatus for controlling the motion of a tubular wellbore string (in one aspect with an additional item and/or apparatus connected thereto) in a wellbore extending from a surface down into the earth has been invented which has, in one aspect, a central mandrel connected to the tubular wellbore string, a housing with a hollow interior and fluid therein, at least one fluid passage apparatus disposable in the hollow interior and having a fluid flow channel extending therethrough, and the at least one fluid passage apparatus secured to the central mandrel, the housing surrounding the central mandrel, the at least one fluid passage apparatus disposed for movement in a chamber defined by an inner surface of the housing and an outer surface of the central mandrel, the at least one fluid passage apparatus positioned within the chamber so that fluid therein is flowable therethrough permitting movement of the fluid passage apparatus within the chamber and thereby controlling movement of the mandrel and therefore of the tubular wellbore string in the wellbore. In one aspect, the apparatus has a first upper piston and a second lower piston, each movably disposed in the chamber, the first upper piston secured to the central mandrel so the central mandrel moves with the first upper piston, each piston having a fluid passage apparatus, the first upper piston movable about at least one rod connected to the second lower piston so that the first upper piston is movable downwardly on the at least one rod as fluid passes therethrough to move to abut the second lower piston. In one aspect the pistons move at different rates.

US Patent:

42904846, Sep 22, 1981

Filed:

Jul 18, 1980

Appl. No.:

6/170209

Inventors:

Clifford H. Beall - Broken Arrow OK
Amareswar Amancharla - League City TX
Michael A. Luke - Houston TX

Assignee:

Baker International Corporation - Orange CA

International Classification:

E21B 2300
E21B 3310

US Classification:

166242

Abstract:

A seal receptacle assembly is provided for affixation on a well conduit. The seal receptacle assembly can be provided to permit telescopic contraction and expansion of the well conduit in response to heating, cooling, or pressurization of the well conduit. The seal receptacle assembly includes an inner body sleeve having a lower end connected to the well tool or a conduit member, and an annular sealing element positioned over an outer cylindrical static sealing surface formed on the inner body sleeve. An outer housing having one end connected to the well conduit telescopes over the upper portion of the inner body sleeve. The housing has an inner cylindrical dynamic sealing surface for sealingly and slidably engaging the sealing element. Means, such as a radially compressible retaining ring, are mounted in an outer groove formed on the inner body sleeve above the sealing element, or, alternatively, a collet is provided, for maintaining the sealing element on the static sealing surface during normal expansion and contraction of the seal receptacle assembly. Upward movement of the outer housing causes the retaining ring, or collet, to expand outwardly into an inner groove in the housing and permit the housing to lift the sealing element off the static sealing surface.

US Patent:

60391189, Mar 21, 2000

Filed:

May 1, 1997

Appl. No.:

8/846456

Inventors:

Thurman B. Carter - Houston TX
Michael A. Luke - Houston TX
John D. Roberts - Spring TX

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

B21B 1707
B21B 1909

US Classification:

166355

Abstract:

A wellbore motion control apparatus for controlling the motion of a tubular wellbore string in a wellbore extending from a surface down into the earth and methods for using it. Such an apparatus, in one aspect, has a housing with a top end, a bottom end, and a hollow interior having an interior volume with fluid therein. There is at least one fluid passage apparatus having a top end and a bottom end and disposable in the hollow interior of the housing, the at least one fluid passage apparatus having a fluid flow channel extending therethrough from the top end to the bottom end. The at least one fluid passage apparatus is securable to a member of the tubular wellbore string while the at least one fluid passage apparatus is positioned within the hollow interior of the housing so that fluid in the hollow interior of the housing is flowable through the fluid flow channel from one end of the fluid passage apparatus to the other end of the fluid passage apparatus permitting movement of the fluid passage apparatus within the housing controlling movement of the member of the tubular wellbore string and thereby controlling movement of the tubular string in the wellbore.