Patent ID: 6464013
Filing Date: 2002-10-15
Classification: E21B

Abstract:
An oil well casing centralizer, comprising:a) a threaded coupling having an outer surface having a length, a pair of axially aligned ends jointed by a hollow passageway and having coupling threads adjacent to each of said pair of axially aligned ends; b) a plurality of rigid centralizer ribs fixedly attached to the outer surface of said oil well casing centralizer, whereby said plurality of ribs extends over the length of said outer surface such that there is no wrench-gripping surface on said outer surface of said oil well casing centralizer whereby the plurality of ribs are formed in a helical pattern about said outer surface of said oil well casing centralizer; and c) a wrench adapter, removably attached to said oil well casing centralizer for allowing said oil well casing centralizer to be installed in a casing string.