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. 20, 2009
Filed:
May. 20, 2005
Gregory N. Gilbert, Sugar Land, TX (US);
Mark A. Sitka, Richmond, TX (US);
Malcolm Douglas Mcgregor, The Woodlands, TX (US);
Glenn C. Gray, Austin, TX (US);
John R. Hardin, Jr., Spring, TX (US);
Christopher Anthony Maranuk, Houston, TX (US);
James E. Stone, Porter, TX (US);
Kristopher V. Sherrill, Humble, TX (US);
Gregory N. Gilbert, Sugar Land, TX (US);
Mark A. Sitka, Richmond, TX (US);
Malcolm Douglas McGregor, The Woodlands, TX (US);
Glenn C. Gray, Austin, TX (US);
John R. Hardin, Jr., Spring, TX (US);
Christopher Anthony Maranuk, Houston, TX (US);
James E. Stone, Porter, TX (US);
Kristopher V. Sherrill, Humble, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A downhole, extendable apparatus and methods of use are described and claimed herein. In one embodiment, the extendable apparatus includes a piston that extends toward a borehole wall, the piston having an inner sampling member that is also extendable. The sampling member may be further extended to engage the borehole wall and penetrate the formation. The sampling member may also include a screen and an inner scraper or wiper that frictionally engages the screen and reciprocates to remove debris from the screen. The piston may comprise a seal pad having an internal cavity for receiving a volume of fluid. In another embodiment, the extendable apparatus comprises multiple, concentric pistons for extending the sampling member further toward the borehole wall than is possible with a single piston. The extendable apparatus may also include a retraction contact switch and position indicator.