API RP 10D-2: 2004 Recommended Practice for Centralizer Placement and Stop Collar Testing. ISO 10427-2: 2004 (Identical)

An American National Standard. American Petroleum Institute (API). First Edition , August 2004. 26p. This standard provides calculations for determining centralizer spacing, based on centralizer
performance and desired standoff, in deviated and dogleg holes in wells for the petroleum and natural gas industries. It also provides a procedure for testing stop collars and reporting test results