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Patent Searching and Data


Title:
PROTECTIVE SYSTEM AND CHEMICAL AGENTS FOR LEACHING POLYCRYSTALLINE DIAMOND ELEMENTS AND FOR RECOVERY OF LEACHED MATERIALS
Document Type and Number:
WIPO Patent Application WO/2012/088212
Kind Code:
A3
Abstract:
The disclosure provides to a PDC element protective system including a mask configured to protect a non-leached portion of a leached polycrystalline diamond compact (PDC) element during a leaching process. The mask may be formed from or coated with polytetrafluoroethylene (PTFE). The disclosure also provides a leaching system containing such a mask and a leaching vessel as well as methods of using the protective and leaching systems. The disclosure further provides a Lewis acid-based leaching agent and methods of its use. Finally, the disclosure provides a method of recycling a PDC or carbide element using a Lewis acid-based leaching agent.

Inventors:
LADI RAM L (US)
WELLS CARL EDWARD (US)
KATARIA BHUPINDER KUMAR (US)
ALMOND STEPHEN W (US)
Application Number:
PCT/US2011/066362
Publication Date:
August 16, 2012
Filing Date:
December 21, 2011
Export Citation:
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Assignee:
HALLIBURTON ENERGY SERV INC (US)
LADI RAM L (US)
WELLS CARL EDWARD (US)
KATARIA BHUPINDER KUMAR (US)
ALMOND STEPHEN W (US)
International Classes:
C22B7/00; C22B3/44; E21B10/567
Domestic Patent References:
WO2010104793A22010-09-16
Foreign References:
US20100012391A12010-01-21
Attorney, Agent or Firm:
LeCOINTE, Michelle M. (98 San Jacinto Blvd.1500 San Jacinto Cente, Austin Texas, US)
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