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. 15, 1981
Filed:
Mar. 23, 1979
John W Erickson, Huntington Beach, CA (US);
Kobe, Inc., City of Commerce, CA (US);
Abstract
The invention relates to an apparatus for pumping and conditioning a drilling fluid normally utilized in the drilling, completion or workover of a subterranean oil or gas well. The apparatus includes a rotor housing encasing a rotatably supported rotor assembly and means for driving the rotor assembly. The rotor assembly is divided into first and second chambers. The first chamber has a radial acceleration passage, connected between an inlet for the drilling fluid and a peripheral portion of the chamber, and means for collecting a first component of the drilling fluid, the drill chips, which are the heaviest, and are forced to the periphery of the first chamber. The second chamber also has a radial acceleration passage which is connected between the first chamber and a peripheral portion of the second chamber and has a first pickup means stationarily mounted for collecting a second component, barite, at the periphery of the second chamber, a second pickup means stationarily mounted for collecting a third component, bentonite, intermediate the periphery and the center of the second chamber, and means for collecting a fourth component, gases, at the center of the second chamber. The barite and bentonite can then be recycled in the drilling fluid.