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. 02, 1995
Filed:
Nov. 24, 1993
Mark C Moyer, Missouri City, TX (US);
James P Powers, Houston, TX (US);
Rick A Ashley, Houston, TX (US);
Exxon Production Research Company, Houston, TX (US);
Abstract
A non-upset tubing section, a tubular coupling, a connection for non-upset tubing sections, and a method for connecting the non-upset tubing section and the tubular coupling are disclosed. Methods for fabricating the non-upset tubing section and the tubular coupling are also disclosed. In one embodiment, the non-upset tubing section has an outer diameter of about 23/8 inches and, in another embodiment has an outer diameter of about 27/8 inches. The non-upset tubing section also has an externally tapered threaded surface having approximately eight rounded threads per linear inch. The tubular coupling has an outer diameter of about 27/8 inches, for use with at least one 23/8 inches OD tubing section, or about 31/2 inches, for use with at least one 27/8 inches OD tubing section. The coupling also has an internally tapered threaded surface having approximately eight rounded threads per linear inch and having a pitch diameter of about 2.258 inches for use with the 23/8 inches OD tubing section or about 2.729 inches for use with the 27/8 inches OD tubing section; Each pitch diameter is measured at a plane located about 1.250 inches from a plane located at a face of the coupling. To connect the non-upset tubing section with the tubular coupling, a thread compound is applied to either or both the threaded surface of the non-upset tubing section and the threaded surface of the tubular coupling. The non-upset tubing section is then inserted into one end of the coupling, and either the tubing section or the coupling is turned relative to its mating part until the non-upset tubing section and coupling reliably connect and seal.