David D Cain

US Patent:

6401747, Jun 11, 2002

Filed:

Jul 13, 2000

Appl. No.:

09/615170

Inventors:

David E. Cain - Houston TX
Gregory L. Glidden - Spring TX
Taylor L. Jones - Houston TX

Assignee:

FMC Corporation - Chicago IL

International Classification:

F16K 302

US Classification:

13732903, 137797, 251266, 251327

Abstract:

The present invention is directed to a gate valve which in one embodiment comprises a valve body having an internal flow passage which extends between an inlet port and an outlet port; a pair of seats mounted in respective seat pockets formed in the body coaxial with the flow passage; a gate disposed between the seats and having a transverse opening therethrough; and a valve stem threadedly connected to the gate; wherein rotation of the valve stem raises or lowers the gate to bring the opening into or out of alignment with the flow passage to either open or close the gate valve, respectively; and wherein each seat comprises a generally cylindrical body portion having a substantially uniform outer diameter and first and second end faces which are adapted to seal with the gate; whereby each seat may be mounted in its seat pocket with either the first face or the second face adjacent the gate.

US Patent:

6510895, Jan 28, 2003

Filed:

Nov 6, 2000

Appl. No.:

09/706958

Inventors:

Bashir M. Koleilat - Spring TX
David E. Cain - Houston TX
Qiu Shi Zheng - Spring TX
Michael Hunt - Houston TX

Assignee:

FMC Technologies - Chicago IL

International Classification:

E21B 3304

US Classification:

166208, 166217, 277328, 285348

Abstract:

A mechanically energized annular packoff seal cartridge for metal-to-metal sealing with substantially concentrically arranged tubular members, such as the tubular wellhead housing and well casing of an oil and gas well. A tubular pressure responsive energizing mandrel having downwardly converging frusto-conical seal actuating surfaces is of a dimension for entry into the annulus between the wellhead seal bore and the rough outer surface of the well casing. Elastomer seals are carried by the energizing mandrel and establish sealing of the energizing mandrel with the wellhead housing and well casing A pair of soft metal seal rings are carried by the seal cartridge and are forced radially into metal-to-metal sealing with the wellhead housing and the rough outer surface of the well casing respectively by the double tapered seal actuating surfaces responsive to pressure induced downward force on the energizing mandrel. A locking mandrel and the seal actuating mechanism are restrained against actuating movement during running of the seal cartridge by a running tool by shear pins, thus enabling the cartridge to pass through various well equipment. The shear pin of the locking mandrel is sheared by downward force applied by the running tool to lock the seal cartridge within the wellhead housing.

US Patent:

6520207, Feb 18, 2003

Filed:

Apr 26, 2001

Appl. No.:

09/844579

Inventors:

Christopher D. Bartlett - Spring TX
Christopher E. Cunningham - Spring TX
Addrew J. Canning - Clydebank, GB
David E. Cain - Houston TX
Taylor L. Jones - Houston TX
Paulo A. Couto - Rio de Janeiro, BR

Assignee:

FMC Technologies, Inc. - Chicago IL

International Classification:

F16L 3728

US Classification:

13761419, 13761418

Abstract:

The present invention is directed to a valve for controlling the flow of fluid through a component which includes a flow conduit extending therethrough. The valve comprises a first closure member for controlling the flow of fluid through the conduit, a second closure member for controlling the flow of fluid through the conduit, and a valve stem which is connected to both the first and second closure members. The stem is responsive to an external force to move the first and second closure members from a closed position, in which the fluid is blocked from flowing through the conduit by both the first and second closure members, to an open position, in which the fluid is permitted to flow through the conduit past both the first and second closure members.

US Patent:

6918574, Jul 19, 2005

Filed:

Aug 23, 2002

Appl. No.:

10/226570

Inventors:

Donald F. Hallden - Houston TX, US
David E. Cain - New Braunfels TX, US
Gregory L. Glidden - Spring TX, US
William L. Scott - Spring TX, US

Assignee:

FMC Technologies, Inc. - Chicago IL

International Classification:

F16K003/00

US Classification:

251327, 251267

Abstract:

A gate valve is disclosed which comprises a valve body which includes a flow bore that extends completely therethrough and a gate cavity that extends partially therethrough and intersects the flow bore, a bonnet which is connected to the valve body over the gate cavity, a gate which is disposed in the gate cavity across the flow bore and includes a transverse opening that extends completely therethrough, a valve stem which includes a first portion that is connected to the gate and a second portion that extends through the gate cavity, a handwheel, and a roller screw assembly which is connected between the handwheel and the second portion of the valve stem and which converts rotation of the handwheel into translation of the valve stem. In this manner, translation of the valve stem raises or lowers the gate to bring the opening into or out of alignment with the flow bore to either open or close the gate valve, respectively.

US Patent:

6923423, Aug 2, 2005

Filed:

Jul 5, 2002

Appl. No.:

10/190174

Inventors:

Taylor L. Jones - Houston TX, US
Philip Hernandez - Stafford TX, US
Archie L. Smith - Marble Falls TX, US
David E. Cain - New Braunfels TX, US
Gregory L. Glidden - Spring TX, US
Christopher D. Bartlett - Spring TX, US
Christopher E. Cunningham - Spring TX, US
Paul P. Luangraj - Houston TX, US

Assignee:

FMC Technologies, Inc. - Chicago IL

International Classification:

E21B007/12
F16K031/143

US Classification:

251 14, 251 636, 251328, 251360, 166373

Abstract:

A gate valve comprises a valve body, a stem bore which extends through the valve body, a stem which is disposed in the stem bore and which includes a first stem portion that is sealed to the stem bore, a second, smaller diameter stem portion that is sealed to the stem bore, and a gate pocket that is located between the first and second stem portions, and gate which is disposed within the gate pocket between the first and second seats.

US Patent:

8157006, Apr 17, 2012

Filed:

Mar 3, 2009

Appl. No.:

12/396597

Inventors:

Bashir Koleilat - Houston TX, US
Sean Gresham - Houston TX, US
David Cain - New Braunfels TX, US

Assignee:

T-3 Property Holdings, Inc. - Houston TX

International Classification:

E21B 28/00
E21B 19/00

US Classification:

1661775, 166 893, 166 862, 166 7514

Abstract:

The disclosure provides a fracturing isolation sleeve for a wellhead assembly including a fracturing adapter and tubing head. In at least one embodiment, the sleeve can telescopic to different lengths to fit different assemblies without necessitating switching the sleeve or portions thereof. The sleeve can be coupled to the wellhead assembly by threaded and non-threaded connections. The sleeve upper portion can be threadably engaged with the wellhead assembly, and/or the sleeve lower portion can be threadably engaged with a packoff bushing rotationally coupled to the wellhead assembly through an anti-rotation mechanism. Further, the sleeve can include a retaining nut to be threadably engaged with the wellhead assembly without necessarily rotating the sleeve upper or lower portions. The sleeve can be also coupled with the wellhead assembly through a mandrel coupled to the sleeve having an actuating cam surface to actuate a lock ring with the wellhead assembly.

US Patent:

20020117211, Aug 29, 2002

Filed:

Jan 25, 2002

Appl. No.:

10/056627

Inventors:

David Cain - Houston TX, US
Gregory Glidden - Spring TX, US
Taylor Jones - Houston TX, US

International Classification:

F16K043/00

US Classification:

137/329020

Abstract:

A gate valve is disclosed which comprises a valve body having an internal flow passage which extends between an inlet port and an outlet port, a pair of seats mounted in respective seat pockets formed in the body coaxial with the flow passage, a gate disposed between the seats and having a transverse opening therethrough, and a valve stem threadedly connected to the gate, wherein rotation of the valve stem raises or lowers the gate to bring the opening into or out of alignment with the flow passage to either open or close the gate valve, respectively. Each seat comprises a generally cylindrical body portion having a substantially uniform outer diameter surface and first and second end faces which are adapted to seal with the gate. In this manner, each seat may be mounted in its seat pocket with either the first end face or the second end face adjacent the gate. Furthermore, each seat also comprises first and second annular grooves formed on the outer diameter surface between the first and second end faces; however, only one of the grooves is positioned within the seat pocket when the seat is mounted in the seat pocket.

US Patent:

20130153240, Jun 20, 2013

Filed:

Dec 19, 2012

Appl. No.:

13/719468

Inventors:

CAMERON INTERNATIONAL CORPORATION - Houston TX, US
David Cain - Houston TX, US
Vijay A. Cheruvu - Houston TX, US
Shian Jiun Chou - Houston TX, US

Assignee:

CAMERON INTERNATIONAL CORPORATION - Houston TX

International Classification:

E21B 7/12

US Classification:

166345

Abstract:

An offshore well drilling system for drilling a subsea well, including a floating platform, an external riser extending from the subsea well, and an internal riser extending from the subsea well to the platform. The internal riser is nested within the external riser. The system also includes an external riser tension device to apply tension to the external riser. The system also includes an internal riser tension device, separate from the external riser tension device, to apply tension to the internal riser.