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:
Sep. 03, 1985
Filed:
Nov. 09, 1983
William G Boston, Dallas, TX (US);
Robert T Strong, Plano, TX (US);
Mobil Oil Corporation, New York, NY (US);
Abstract
A method and apparatus are disclosed for removing and counting artificial drill cuttings from a returning drill mud containing a mixture of both artificial and natural drill cuttings. The artificial drill cuttings are injected into the drilling fluid and supplied to a drill string and have magnetic properties, while the natural drill cuttings do not. A rotary magnetic drum having a first endless belt travelling therearound receives the cuttings mixture and the magnetic artificial cuttings adhere to the first belt by being attracted to the drum, while the natural drill cuttings do not, thereby permitting separation of the two. The artificial cuttings are removed from the drum by a second endless belt cooperating with the first endless belt to define a nip between them. The belts positively engage with and remove the artificial cuttings from the drum.