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.:
Date of Patent:
Nov. 18, 2008
Filed:
Mar. 22, 2005
Applicants:
Frank F. Chang, Sugar Land, TX (US);
Lawrence A. Behrmann, Houston, TX (US);
Ian C. Walton, Sugar Land, TX (US);
Keng Seng Chan, Kuala Lumpur, MY;
Inventors:
Frank F. Chang, Sugar Land, TX (US);
Lawrence A. Behrmann, Houston, TX (US);
Ian C. Walton, Sugar Land, TX (US);
Keng Seng Chan, Kuala Lumpur, MY;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.