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. 22, 2014
Filed:
Mar. 01, 2011
Vishal Saheta, Houston, TX (US);
Arley G. Lee, Katy, TX (US);
Vishal Saheta, Houston, TX (US);
Arley G. Lee, Katy, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A downhole jarring tool includes a mandrel having a small diameter portion and a large diameter portion, a detent cylinder sealingly disposed around the mandrel forming an enclosure, a divider disposed in the enclosure between the mandrel and the detent cylinder, wherein the divider partitions the enclosure into a storage chamber and a metering chamber, and a metering system disposed around the mandrel. A method of applying an impact force using a downhole jarring tool includes moving a mandrel with respect to a detent cylinder by applying an axial force, positioning the mandrel such that a metering system disposed on the mandrel enters a reduced diameter portion of the detent cylinder, transmitting energy to an energy storing component disposed inside the detent cylinder, metering a fluid through the metering system, and accelerating the mandrel with respect to the detent cylinder.