Mechanical Bow Spring Centralizer

The Mechanical Bow Spring Centralizer centralizes a bottom-hole assembly (BHA) inside larger tubing or casing after the BHA has passed through a restricted ID, packer, or production tubing, and assists fishing, cutting, milling, under-reaming, and washing-over operations. The bow springs remain at maximum expansion, collapse to pass through restrictions, then re-expand to the target tubing/casing size. Circulation can be maintained through the tool for hydraulic tools run below it or for washing.

Running in and out of the hole produces drag, so restrictions must be approached carefully to avoid spring damage.

Note: all published strength figures are calculated from material yield strength, are accurate to within ±20%, and are provided as a guide only. Apply an appropriate safety factor.