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. 03, 1984
Filed:
Aug. 24, 1981
Applicant:
Inventor:
Edward O Anders, Houston, TX (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
175 61 ; 175 76 ; 175321 ; 175325 ;
Abstract
A method of and apparatus for drilling directional well bores is disclosed in which the well bore or a portion thereof is drilled along a line that follows, as close as possible, a preselected catenary curve. An extensible joint located between a stabilizer just above the drilling bit and a stabilizer spaced from the bit stabilizer is used to cause the bit to tend to increase the dip angle of the well bore at an increasing rate.