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:
Jul. 24, 1984
Filed:
Apr. 23, 1982
Emrys H Jones, Jr, Butler, PA (US);
Ronald W Umphrey, Ponca City, OK (US);
Conoco Inc., Ponca City, OK (US);
Abstract
Rotary process and apparatus for drilling a borehole through a subterranean formation in which the path of a rotary drill bit is varied by deflecting the drill string in response to the pulsating flow of drilling fluid through the drill string. The pulsating drilling-fluid flow is synchronized with the rotation of the drill string by generating a function representative of the rotational position of the drill string and, in response to this function, diverting a portion of the drilling fluid through a secondary line. Flow through the secondary line is controlled by a valve which is opened and closed in synchronization with the rotational position of the drill string. The diverted fluid is supplied to the drilling fluid source for recirculation.