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. 09, 2025
Filed:
Jun. 14, 2022
GB Connections Llc, Houston, TX (US);
Eugene J. Mannella, Richmond, TX (US);
GB CONNECTIONS LLC, Houston, TX (US);
Abstract
A casing string is used within a predetermined annular clearance inside a surrounding casing. Tubulars have turn-down recessed to a smaller diameter than the tubular's outer diameter. Pin ends of the tubulars have pin thread and taper inward to an even smaller diameter at the pin noses of the pin ends. Couplings have an outer diameter to fit with the annular clearance requirement. The through-bore of the coupling has box thread sections tapering outward from a center of the through-bore to the coupling's ends. The pin threads of the pipe ends thread respectively to the box thread sections of the couplings, and the pin noses of the opposing pipe ends engage in contact in the center of the coupling with a contact pressure. Cross-sections of the pin ends are balanced to cross-sections of the coupling so the connection can provide a tension and pressure ratings, such as at least 70 percent, of the pipe body tension and pressure ratings.