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:
Aug. 26, 2014
Filed:
Nov. 23, 2007
Pierre-jérôme Acquaviva, La Garde, FR;
Pierre-Jérôme Acquaviva, La Garde, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A drilling fluid delivery system for drilling boreholes with a drill bit, includes a primary flow circuit having a relatively high flow rate for transferring drilling fluid to and from the drill bit. The system also includes a secondary flow circuit having a relatively low flow rate for transferring drilling fluid to and from the primary flow circuit. Furthermore, the system includes a cuttings transfer system, such as a hydrocyclone or a rotating filter, between the primary and secondary flow circuits. When the cutting transfer system is in use, it receives fluid containing cuttings from the primary circuit and separates the fluid into a first stream that contains substantially no cuttings and a second stream containing cuttings. The first stream is returned to the primary flow circuit and the second stream is directed to the secondary flow circuit.