Patent ID: 9458672
Filing Date: 2016-10-04
CPC Classification: E21B

Claim Text:
1. A method of positioning casing centralizers downhole in a well comprising the steps of: providing a well having a substantially circular sidewall, providing a pipe having a cylindrical sidewall, a central conduit, a distal extremity, and an opening at or near the pipe's distal extremity: providing an at least partially circular structure having a central hole within the pipe central conduit; positioning the pipe and the at least partially circular structure downhole with the at least partially circular structure positioned adjacent to a desired location for centralizing a well casing; ejecting the at least partially circular structure from the interior of the pipe through the pipe opening so as to be positioned at the desired location for centralizing a well casing; expanding the at least partially circular structure to be adjacent the wellbore sidewall at the desired location for centralizing a well casing; and moving a well casing downhole past the at least partially circular structure wherein the at least partially circular structure provides spacing between the well casing and the well sidewall.