James Alan Rochen

US Patent:

20020100360, Aug 1, 2002

Filed:

Jan 29, 2001

Appl. No.:

09/771739

Inventors:

James Rochen - Waller TX, US
Kare-Jonny Haugvaldstad - Stavanger, NO
Timothy Sampson - Spring TX, US

International Classification:

B64D001/04
F41F005/00

US Classification:

089/001150

Abstract:

A stackable thru-tubing perforating gun system for use in perforating in a large diameter cased wellbore below a smaller diameter production tubing string. The system comprises a thru-tubing retrievable bridge plug for supporting a lower perforating gun section. The system further comprises at least one additional gun section stacked on top of the lower gun section. After firing, individual gun sections may be retrieved from the wellbore through the tubing string.

US Patent:

20040036225, Feb 26, 2004

Filed:

Apr 30, 2003

Appl. No.:

10/426938

Inventors:

Michael Ritter - Conroe TX, US
James Rochen - Waller TX, US
Patrick Zimmerman - Houston TX, US
Donald Greenlee - Murchison TX, US

International Classification:

E21B033/03

US Classification:

277/328000

Abstract:

The present invention generally relates to an apparatus and a method for sealing a wellbore. In one aspect, a sealing apparatus for use in a wellbore is provided. The apparatus includes a compressible sealing member disposed around a body and an anchoring device. The apparatus further includes an anti-extrusion assembly having at least one flexible segment and one seal ring disposable a each end of the compressible sealing member, wherein the anti-extrusion assembly is constructed and arranged to form a barrier around the ends of the compressible sealing member upon expansion thereof. In another aspect, a downhole tool for sealing an annulus of a wellbore is provided. In yet another aspect, a method for sealing a wellbore is provided.

US Patent:

20120012306, Jan 19, 2012

Filed:

Jul 19, 2010

Appl. No.:

12/838724

Inventors:

Shawn J. Treadaway - Houston TX, US
Robert C. Stratton - Houston TX, US
James A. Rochen - Waller TX, US

Assignee:

WEATHERFORD/LAMB INC. - Houston TX

International Classification:

E21B 23/01

US Classification:

166216

Abstract:

A downhole tool slip mechanism including a cone, cage, and slip disposed on a mandrel. The cone and cage can be move in relation to one another, and the come may be locked into place during run-in and retrieval downhole. The cage contains slip slots contains a spring retaining finger for a spring that resides between the retention finger and the slip. This spring serves to bias the slip inward during run-in and retrieval. The slip slots have load-bearing shoulders used to engage the slip during retrieval. The slips outer surface is completely covered in wickers so that the slip can sustain greater loads when set in place. Additionally, the slip has load-bearing shoulders with an increased thickness cross-section to sustain greater loads during retrieval while minimizing slip and cage failures.

US Patent:

20140060812, Mar 6, 2014

Filed:

Sep 6, 2012

Appl. No.:

13/605239

Inventors:

Jonathan Allen Young - Houston TX, US
James Alan Rochen - Waller TX, US

Assignee:

WEATHERFORD/LAMB, INC. - Houston TX

International Classification:

E21B 23/01

US Classification:

166118

Abstract:

A device and method for use is provided for grippingly engaging a tubular, in particular for gripping a wellbore casing. Drillable bridge plugs may use hardened buttons or other slip arrangements and materials that may be susceptible to damage when the bridge is being run into the wellbore. It may be desirable to protect the slip ring or the hardened buttons by shielding the buttons during run-in or by providing a standoff device so that the buttons may be prevented from contacting the casing until desired.

US Patent:

20210381334, Dec 9, 2021

Filed:

Jun 8, 2020

Appl. No.:

16/896185

Inventors:

- Houston TX, US
Cesar Garcia - Katy TX, US
James Rochen - Waller TX, US

International Classification:

E21B 33/129
E21B 33/128

Abstract:

A downhole tool with a radially expandable sealing element, such as a packer or plug. The sealing element employs metallic support rings disposed on the sealing element outer surface for preventing extrusion during run-in and for clamping the sealing element to the tool.

US Patent:

20210363840, Nov 25, 2021

Filed:

May 20, 2020

Appl. No.:

16/879493

Inventors:

- Houston TX, US
NAUMAN H. MHASKAR - CYPRESS TX, US
JAMES ROCHEN - WALLER TX, US

International Classification:

E21B 23/01
E21B 33/128

Abstract:

The present disclosure relates to a well plug setting tool having a retrievable dog assembly, which replaces a mule shoe structure used in a state-of-the-art setting tool. The well plug setting tool according to the present disclosure reduces the amount of drillable or dissolvable material used for setting well plugs.

US Patent:

20210270099, Sep 2, 2021

Filed:

Feb 28, 2020

Appl. No.:

16/805297

Inventors:

- Houston TX, US
Jorge REYES VILLEGAS - Houston TX, US
James A. ROCHEN - Waller TX, US
Jose L. ARREDONDO - Houston TX, US

International Classification:

E21B 23/01
E21B 33/129

Abstract:

A downhole tool for engaging a downhole tubular includes a slip assembly. The slip assembly may include a slip body; a slip insert disposed in the slip body, the slip insert comprising a dissolvable metal alloy; and a plurality of gripping elements coupled to the slip insert, the gripping element configured to engage the downhole tubular.

US Patent:

20200157912, May 21, 2020

Filed:

Nov 16, 2018

Appl. No.:

16/193675

Inventors:

- Houston TX, US
Deborah Lynn Banta - Houston TX, US
James Rochen - Waller TX, US

Assignee:

Weatherford Technology Holdings, LLC - Houston TX

International Classification:

E21B 33/12
E21B 33/129

Abstract:

A downhole apparatus for use in a tubular can include: a mandrel having a first end shoulder; a first slip disposed on the mandrel adjacent the first end shoulder and abutting against a mule shoe; a cone disposed on the mandrel adjacent the first slip and movable relative to the first end shoulder to engage the first slip toward the tubular; a seal element disposed on the mandrel adjacent the cone and being expandable outward from the mandrel; and wherein at least one component selected from the group consisting of the mandrel, the first slip, the cone, the seal element, and the mule shoe is a filler-doped degradable component that comprise a degradable material and a filler.