The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8011450 B1

Date of Patent:

Sep. 06, 2011

Filed:

Jul. 21, 2006

Active bottomhole pressure control with liner drilling and completion systems

Applicants:

Sven Krueger, Winsen/Aller, DE;

Gerald Heisig, Braunscheweig, DE;

Detlef Hahn, Hannover LS, DE;

Volker Krueger, Celle, DE;

Peter Aronstam, Houston, TX (US);

Harald Grimmer, Lachendorf, DE;

Roger Fincher, Conroe, TX (US);

Larry Watkins, Houston, TX (US);

Inventors:

Sven Krueger, Winsen/Aller, DE;

Gerald Heisig, Braunscheweig, DE;

Detlef Hahn, Hannover LS, DE;

Volker Krueger, Celle, DE;

Peter Aronstam, Houston, TX (US);

Harald Grimmer, Lachendorf, DE;

Roger Fincher, Conroe, TX (US);

Larry Watkins, Houston, TX (US);

Assignee:

Baker Hughes Incorporated, Houston, TX (US);

Attorney:

Mossman, Kumar & Tyler, PC

Primary Examiner:

William P Neuder

Assistant Examiner:

Elizabeth C Gottlieb

Int. Cl.

CPC ...

E21B 7/00 (2006.01);

U.S. Cl.

CPC ...

Abstract

One exemplary APD Device is used with a liner drilling assembly to control wellbore pressure. The APD Device reduces a dynamic pressure loss associated with the drilling fluid returning via a wellbore annulus. Another exemplary APD Device is used to control pressure in a wellbore when deploying wellbore equipment, including running, installing and/or operating wellbore tools. The APD Device is set to reduce a dynamic pressure loss associated with a circulating fluid. The APD Device can also be configured to reduce a surge effect associated with the running of the wellbore equipment. Still another APD Device is used to control pressure in a wellbore when completing or working over a well. Exemplary completion activity can include circulating fluid other than a drilling fluid, such as a gravel slurry. The APD Device can reduce the dynamic pressure loss associated with circulation of both drilling fluid and non-drilling fluid.

Find Patent Forward Citations

Krueger, Sven. (2011). Active bottomhole pressure control with liner drilling and completion systems (U.S. Patent No. 8011450). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8011450

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile