Invention Grant
- Patent Title: Systems and methods for vapor pressure leaching polycrystalline diamond cutter elements
- Patent Title (中): 蒸汽浸出多晶金刚石切割元件的系统和方法
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Application No.: US14073243Application Date: 2013-11-06
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Publication No.: US09156136B2Publication Date: 2015-10-13
- Inventor: Guodong Zhan , Walter R. Rothrock , Parul Walia Dhall , Michael S. Nixon , Terry R. Matthias
- Applicant: National Oilwell Varco, L.P.
- Applicant Address: US TX Houston
- Assignee: NATIONAL OILWELL VARCO, L.P.
- Current Assignee: NATIONAL OILWELL VARCO, L.P.
- Current Assignee Address: US TX Houston
- Agency: Conley Rose, P.C.
- Main IPC: B24D18/00
- IPC: B24D18/00 ; B24D3/10 ; C23F1/08 ; C23F1/12 ; C22B3/02 ; C22C26/00
Abstract:
A method is disclosed for leaching a polycrystalline diamond (PCD) cutter element. In an embodiment, the method includes suspending the PCD cutter element above a liquid acid bath. In addition, the method includes elevating the temperature of the liquid acid bath above ambient conditions to transition at least some of the liquid acid bath to acid vapors. Further, the method includes elevating the pressure of the acid vapors above ambient conditions. Still further, the method includes exposing the PCD cutter element to the acid vapors.
Public/Granted literature
- US20140123565A1 Systems and Methods for Vapor Pressure Leaching Polycrystalline Diamond Cutter Elements Public/Granted day:2014-05-08
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