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:
Oct. 21, 2003
Filed:
Jul. 25, 2000
Helmut Winnacker, Burgdorf, DE;
Precision Drilling Technology Services GmbH, Edemissen, DE;
Abstract
In a borehole logging apparatus ( ) for deep well drillings having a device for transmitting measured data obtained while drilling from a borehole through the drilling fluid to the earth's surface, there is arranged in the upper end of a housing ( ) a signal transmitter ( ) comprising a beaker-shaped rotor ( ) and a stator sleeve ( ) surrounding said rotor. Fluid impinges on the signal transmitter ( ) through a central feed pipe ( ) surrounded by an exchangeable bypass ring ( ) to which the complete current of drilling fluid is routed through a filter pipe ( ) and through which part of the drilling fluid current is routed back into the drill string ( ). From a set of bypass rings ( ) of different bypass cross sections it is possible to select one suited for the particular on-site conditions and insert it into the logging apparatus ( ) in order to obtain a significant signal through the signal transmitter ( ).