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:
May. 20, 2014
Filed:
Mar. 16, 2009
Waqar Khan, Lahore, PK;
Waqar Khan, Lahore, PK;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A method and an apparatus log an underbalanced open hole well without killing the well or causing formation damage to maintain well control during the process. The installation of the well logging equipment is accomplished while holding the underbalanced open hole at its optimal pressure, then conveying the logging string on a drill string into the open hole portion to total depth and logging while removing the logging string from the total depth to be logged with a cable side entry sub. The invention also provides a unique configuration of equipment to accomplish the logging using what is normally referred to as tough logging condition techniques.