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U.S. Department of Energy
Office of Scientific and Technical Information

Well clean out tool

Patent ·
OSTI ID:6558007
This patent describes a downhole well clean out tool for removing sand and debris from a well bore. It comprises: an elongate string connectable to a source of reciprocating and rotating motion located at the surface.
Assignee:
NOV; NOV-90-029095; EDB-90-152724
Patent Number(s):
A; US 4940092
Application Number:
PPN: US s 7-383005
OSTI ID:
6558007
Country of Publication:
United States
Language:
English