Drilling tool with extendable elements
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 20, 2001
Grant Date -
N/A
app pub date -
Nov 12, 1998
filing date -
Nov 12, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tool for expanding a hole size while drilling tool is disclosed. The tool utilizes a mechanically actuated mandrel and extendable cutting lugs designed in a configuration with fewer moving parts than previous designs. The cutting lugs have multiple cutting elements attached. The cutting lugs are driven between two cylindrical diameter surfaces to achieve a large differential between the retracted and extended positions of the tool, and to provide sufficient stability to allow the tool to be used in the extended position while drilling forward. The lugs are internally assembled and tapered to closely match the slots in the body of the tool for additional stability and to prevent complete passage through the tool for prevention of catastrophic failure. The tool has a locking mechanism to allow the tool to remain in the extended position when the weight is removed from the tool. In an alternate embodiment, the cutting lugs may be replaced with stabilizing lugs having a wear resistant surface or mounted with wear resistant elements to form an expanding drill string stabilizer.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully