An indexing mechanism includes a piston. An indexing sleeve encases a portion of the piston. The indexing mechanism is longitudinally fixed to the piston, and is rotatable relative to the piston. The indexing sleeve includes an indexing track. An indexing ring surrounds less than an entirety of the indexing sleeve. The indexing ring is rotatable relative to the piston. The indexing ring includes an indexing pin that extends into the indexing track.

An apparatus and method for creating axial movement of an inner sliding sleeve member on a tool in a downhole environment. The apparatus has keys which mate in a profile on the inner sliding sleeve member, the keys being held in a carrier on a sleeve around an inner mandrel. The inner mandrel includes stops and a lip which can be slid over the keys to retract them for release from the inner sliding sleeve member. By picking up and shifting down the mandrel relative to the sleeve, the apparatus is cycled to jar up, jar down and release. An exercise tool to release a stuck flow tube of a subsurface safety valve is described.

Provided, in one aspect, is a deflector assembly. The deflector assembly, in one embodiment, includes a deflector body having a deflector window located therein, and a deflector ramp positioned at least partially across the deflector window, the deflector ramp configured to move between first ({circle around (1)}), second ({circle around (2)}) and third ({circle around (3)}) different positions when a downhole tool moves back and forth within the deflector body.

Bottom hole assemblies for drilling through a lost circulation zone of a wellbore includes a drill string, a drill bit and a cladding seat coupled to the drill string, an expandable cladding sheath engaged with the cladding seat, a release mechanism coupling an uphole end of the expandable cladding sheath to the drill string, and an expander translatable axially along the drill string. The expandable cladding sheath is a fiber reinforced polymer. The cladding seat releasably couples a downhole end of the expandable cladding sheath to the drill string, and the release mechanism operates to release the uphole end of the expandable cladding sheath from the drill string. The expander deforms the expandable cladding sheath outward into contact with a wall of a wellbore when translated axially through a central cavity of the expandable cladding sheath. The bottom hole assembly may enable drilling ahead through a lost circulation zone.

A downhole tool activation assembly for prevention of activation from rig heave on a floating rig comprising a block release with a release feature. The release feature includes a release chamber, an activation chamber, and a fluid stop that retains a traveling block in a first position. A traveling block comprised of a plurality of drag blocks and drag block springs is configured to retain the traveling block to a position along an inner surface of a casing. The block release moves to a release position when the release feature is activated. The traveling block moves axially along a block mandrel with a block lug traveling within a j-slot. The j-slot on the block mandrel includes a run-in slot, a motion slot, and an activating slot configured to transfer the block lug to the next slot. The activating slot is configured to move the traveling block to an activating position.

An adjustable flow control device. In one aspect, the flow control device comprises a base pipe having one or more openings extending from an exterior to an interior of the base pipe; and a movable sleeve positioned along the interior of the base pipe, the movable sleeve having one or more associated openings extending from an exterior to an interior of the movable sleeve, and configured to rotate to a first position that aligns a first of the base pipe openings with a first of the movable sleeve openings.

A downhole tool activation assembly for prevention of activation from rig heave on a floating rig comprising a block release with a release feature. The release feature includes a release chamber, an activation chamber, and a fluid stop that retains a traveling block in a first position. A traveling block comprised of a plurality of drag blocks and drag block springs is configured to retain the traveling block to a position along an inner surface of a casing. The block release moves to a release position when the release feature is activated. The traveling block moves axially along a block mandrel with a block lug traveling within a j-slot. The j-slot on the block mandrel includes a run-in slot, a motion slot, and an activating slot configured to transfer the block lug to the next slot. The activating slot is configured to move the traveling block to an activating position.

An axial linkage acting between the main body and the gripping assembly of a tool for gripping tubular workpieces includes a drive cam body that coaxially engages an intermediate cam body via a drive thread, with the intermediate cam body coaxially engaging a driven cam body via a driven thread, and with the drive thread and the driven thread having opposite orientations. The linkage includes a latch mechanism for preventing relative axial displacement of the drive cam body and the driven cam body. In operation while unlatched, the linkage converts bi-directional relative rotation into relative axial movement of the drive cam body and the driven cam body, thus increasing or decreasing the overall length of the linkage according to the rotational direction. The linkage can be re-latched using any of multiple operational sequences.

A rotary latch release mechanism includes axially-aligned upper and lower rotary latch components carried on and rotationally coupled to upper and lower latch assemblies, respectively. The latch release mechanism is movable from an axially-latched position to an axially-unlatched position in response to relative rotation between the upper and lower rotary latch components. The latch release mechanism has a movable land surface that acts in response to relative axial displacement to induce the relative rotation required to release the latch. The latch release mechanism may be configured such that the axial movement of the movable land surface will cause the relative axial movement required to release the latch in combination with the required rotation. Accordingly, the rotary latch mechanism operates in response to externally-controlled axial movement of a movable land surface carried by the latch release mechanism, without requiring externally-induced rotation.

Provided, in one aspect, is a lateral locating assembly. The lateral locating assembly may include, in one aspect, a housing, as well as a piston positioned within the housing. The lateral locating assembly according to this aspect may further include a mandrel extending from a distal end of the housing, the mandrel configured to rotate and translate angularly in response to the piston moving from a first position to a second position, and a deflection tip coupled with a distal end of the mandrel, the deflection tip configured to rotate and angularly translate with the mandrel relative to the housing.