Anchoring and orientating equipment in well casing

The anchoring and orientating equipment provides enhanced economy, convenience and utility by providing an unobstructed bore therethrough which enhances access and flow. The latch assembly 80 has a tubular collet structure 84 which also serves as an outer housing of the latch assembly. The collet structure has circumferentially spaced apart collets 86 integrally formed thereon. Each collet is separated from adjacent collets by longitudinally elongate slots 92 formed through a sidewall of the collet structure. The collets have external anchoring and orienting profiles 88 and 90. The profile 88 is different from profile 90. When the collet structure 84 is inserted axially into the coupling 14, fig 1, the profiles on the collets 86 initially prevent further axial displacement of the latch assembly 80 relative to the coupling 14. Rotation of the latch assembly 80 will then cause the external profiles 88, 90 to engage the corresponding radial portions on the internal profile 12, fig 1, thereby rotationally anchoring and orienting the latch assembly relative to the coupling 14. To maintain the collets in engagement with the profile 12, the latch assembly includes a locking device 94. The device includes a sleeve 96 secured by shear screws and a suitable force will shear the screws and move the sleeve 96 downwardly to be positioned within the collets and supports them in engagement with the profile.