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:
Mar. 29, 1994
Filed:
Oct. 29, 1992
Tom Jones, Midland, TX (US);
Other;
Abstract
An improved drilling drill collar particularly for use in drilling horizontal wells employing a fluid driven drill, the drill collar being in the form of an elongated intermediate portion of at least substantially triangular cross-sectional configuration and having a central passageway therethrough and having externally threaded ends, the intermediate portion being formed of a lightweight metal, such as aluminum, magnesium or alloys therefore, a first tubular tool joint member threadably secured to the intermediate portion first end and a second tubular tool joint member threadably secured to the intermediate portion second end, one of the tool joint members having female threads and the other external threads so that thereby joints may be threadably secured end-to-end, the tool joint members being of a stronger metal, such as steel, the triangular configuration of the drill collar permitting free flow of well drilling circulation fluid as the drill collar lies in a horizontal borehole.