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.

This edition of API RP 10D-2 is the identical national adoption of ISO 10427-2, Petroleum and natural gas industries-Equipment for well cementing-Part 2: Centralizer placement and stop-collar testing