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:
Dec. 07, 2010
Filed:
Dec. 21, 2007
Jonathan Guidry, Meylan, FR;
Xiaoyan Shi, Beijing, CN;
Richard Meehan, Beijing, CN;
Joseph Fang, Beijing, CN;
LI Lan, Beijing, CN;
Jonathan Guidry, Meylan, FR;
XiaoYan Shi, Beijing, CN;
Richard Meehan, Beijing, CN;
Joseph Fang, Beijing, CN;
Li Lan, Beijing, CN;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A solution for determining a neutral point of a drillstring in drilling a borehole is disclosed. The solution includes receiving depth-time log data for drilling the borehole with the drillstring, the depth-time log data including data related to a torque and drag factor and data related to a hydraulic factor; and determining the neutral point of the drillstring at a time point during the drilling based on the torque and drag factor and the hydraulic factor.