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:
Apr. 05, 2005
Filed:
Feb. 11, 2004
Ashley B. Johnson, Cambridge, GB;
Lawrence A. Behrmann, Houston, TX (US);
Wenbo Yang, Sugar Land, TX (US);
Fokko Harm Cornelis Doornbosch, Sola, NL;
Ashley B. Johnson, Cambridge, GB;
Lawrence A. Behrmann, Houston, TX (US);
Wenbo Yang, Sugar Land, TX (US);
Fokko Harm Cornelis Doornbosch, Sola, NL;
Schlumberger Technology Corp., Sugar Land, TX (US);
Abstract
An apparatus and method of perforating and surging a section of the wellbore includes running a perforating gun into the well on a string having an isolation valve above the perforating gun, closing the valve, and perforating the well with the isolation valve closed so that the formation is isolated from the well surface. An underbalance pressure is provided above the isolation valve, and then, the isolation valve is opened to surge the formation.