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:
Oct. 30, 1990
Filed:
Nov. 13, 1989
Applicant:
Inventor:
Ronald G Whitten, Berlin, CT (US);
Assignee:
Teleco Oilfield Services Inc., Meriden, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166250 ; 73151 ; 175 40 ;
Abstract
A method for determining the free point of a stuck drillstring is disclosed. The method includes determining the hookload on the stuck drillstring, comparing the hookload on the stuck drillstring with the most recent hookload prior to drillstring sticking to determine the depth of the free point.