Abstract: A pipe handler comprising a body defining an axis; a slide adapted to translate in a direction parallel with the axis; and a plurality of grippers, wherein at least one of the plurality of grippers is adapted to translate in a direction generally perpendicular to the axis upon translation of the slide and selectively contact a threaded interface of an inner surface of a tubular.

Abstract: A pulling-out device for a prefabricated concrete support wall, belonging to the field of concrete support structures, wherein a vertical hollow tube is pre-buried in the prefabricated concrete support wall. The pulling-out device includes a pulling-out mechanism disposed in the hollow tube by penetration, the lower end of the pulling-out mechanism is fixedly arranged in the prefabricated concrete support wall and positioned at the lower end of the hollow tube, a first fixing device for tensing the pulling-out mechanism is arranged at the upper end of the pulling-out mechanism, and the first fixing device is not connected with the prefabricated concrete support wall.

Abstract: A stabilizer for passing through a restriction includes a tubular body having a bore therethrough; a rigid blade disposed on the tubular body; and a deformable blade disposed on the tubular body, wherein the deformable blade includes a geometric profile configured to preferentially bend the deformable blade in one direction when the deformable blade encounters the restriction, and wherein the deformable blade has a height greater than a height of the rigid blade. In one example, the deformable blade is offset from a radial axis.

Abstract: A lifting device (110) for concrete elements such as bridge beam and deck elements, panels and the like up to and beyond 1,000 tons (t) is described. The lifting device may be suitable for face and edge lifting of concrete elements that have a suitable cavity formed within or through them. The lifting device (110) may include a lifting eye (116) connected to an elongate member/shank (114) that has a flared end (122). A sleeve (126) about the shank (114) may be used to raise and lower the moveably attached wedges (124) to and from the flared end (122). In use the wedges (124) upon the flared end (122) prevent the withdrawal of the lifting device (110) from the cavity of the concrete element. A cavity former is also described that may be used in the casting of the concrete element to form a suitable cavity.

Abstract: A grapple for use in an overshot has a tension ring with a reduced helix diameter. However, the helix diameter is not reduced on either sides of the control finger slot to allow the grapple to remain in contact with the control. In the alternative, a composite helix member may be utilized. Another embodiment comprises the inclusion of expansion blades on the inner diameter (“ID”) of the tension ring which allow the grapple to expand substantially before the fish reaches the segments. Another embodiment provides for a control with an offset finger to allow the guide thread ID to be smaller than the bowl helix major ID. Yet another embodiment provides a spiral grapple having grooves along its axis to provide the ability to catch a larger range of fish.

Abstract: A casing gripper is stabbed into a casing and energized by a top drive, gripping the casing. The casing gripper includes a load bearing mandrel that has external threads. The casing gripper also includes a nut threaded over the external threads, and a wrench having a portion of the upper end of the load bearing mandrel inserted into an opening of the wrench. The wrench is configured to prevent rotation of the nut but allow axial movement while the op drive rotates the mandrel. The casing gripper includes a grapple coupled to the nut and extending along a portion of the lower end of the load bearing mandrel. The grapple moves axially with the nut an is configured to radially expand and engage a casing member.

Abstract: An internal pipe gripping tool includes a tool body adapted for insertion into a pipe. A gripper is disposed adjacent and movably coupled to the tool body. The gripper has an engaged position and a released position relative to the tool body. A lever has a first end node, a second end node, and an intermediate node between the first and second end nodes. The first end node is coupled to the tool body, and the intermediate node is coupled to the gripper. A force applied to the second end node results in another force at the intermediate node that shifts the gripper from the engaged position to the released position.

Abstract: A casing running tool is provided having both axial and circumferentially tapered elements. In certain embodiments, the casing running tool comprises cam structures that are circumferentially tapered so as to allow an applied torque to engage and disengage the casing running tool with a casing or liner. In embodiments, the circumferential taper of the cam structures allows a mandrel or rollers disposed between the mandrel and cam structures to apply radial force to corresponding shoe structures which in turn engage or disengage the casing or liner. The cam structures may also exhibit an axial taper to allow for a self-energized fail-sage operation of the casing running tool.

Abstract: An improvement in a gripping tool having a grip surface carried by movable grip elements and cam linkages to radially move the grip surface from a retracted to an extended position. The improvement involves a tri-cam linkage with cam pairs supporting bi-rotary to axial stroke activation and further cam linkages to cause radial stroke of the tool grip surface as a function of axial stroke.

Abstract: An internally gripping tong to rotate tubular segments comprising a central cam body rotatably disposed within a housing having a plurality of windows. The cam body is surrounded by a plurality of angularly distributed gripping jaws slidably received within the windows. The tong is disposed within a bore of a tubular segment, and rotation of the housing relative to the cam body deploys the gripping jaws radially outwardly within the windows to engage the interior wall of the tubular segment. The tong may be self-energizing in both the make-up and the break-out modes of operation. The tong may be deployed to grip the tubular segment using a device to frictionally couple the housing to the tubular segment that cooperates with the top drive assembly, or by an internal actuator that imparts rotation to the housing relative to the cam body.

Abstract: Coiled tubing spears for retrieving a section of cut coiled tubing comprises a mandrel having attachment members, e.g., spears, at upper and lower ends for facilitating connection of the upper end of the mandrel to a spooled section of coiled tubing and the lower end of the mandrel to a section of cut coiled tubing disposed in a wellbore. Coiled tubing spears comprise one or more centralizers that are releasably secured to the mandrel. The centralizer(s) facilitate lining up a lower attachment member, or spear, with the bore of the section of cut coiled tubing so that the mandrel can be secured to the cut coiled tubing for retrieval. During retrieval of the cut coiled tubing, the centralizer(s) are released from the mandrel so that the mandrel and attachment members can continue through an injector head.

Abstract: An internally gripping tong to rotate tubular segments comprising a central cam body rotatably disposed within a housing having a plurality of windows. The cam body is surrounded by a plurality of angularly distributed gripping jaws slidably received within the windows. The tong is disposed within a bore of a tubular segment, and rotation of the housing relative to the cam body deploys the gripping jaws radially outwardly within the windows to engage the interior wall of the tubular segment. The tong may be self-energizing in both the make-up and the break-out modes of operation. The tong may be deployed to grip the tubular segment using a device to frictionally couple the housing to the tubular segment that cooperates with the top drive assembly, or by an internal actuator that imparts rotation to the housing relative to the cam body.

Abstract: A blow out preventer for operating between a spear of a tubular gripping tool and a tubular gripped by the tool includes: an expandable seal carried on the spear and expandable to seal between the spear and the tubular's inner wall, the expandable seal being operable as a back up to a primary seal operable between the spear and the tubular's inner wall. A tubular gripping tool and a method may include the blow out preventer.

Abstract: An improvement in a gripping tool having a grip surface carried by movable grip elements and cam linkages to radially move the grip surface from a retracted to an extended position. The improvement involves a tri-cam linkage with cam pairs supporting bi-rotary to axial stroke activation and further cam linkages to cause radial stroke of the tool grip surface as a function of axial stroke.

Abstract: An apparatus and method for removing an object from a drain for includes a pair of arms each having a first end, a second end, a medial portion, a first side and a second side. Each of the first sides is convexly curved. A pivot member extends between and is pivotally attached to the medial portions so that the first sides facing each other. A slide member engages each of the first sides and urges the first ends toward each other as the slide member moves toward the pivot member. An actuator is configured to selectively move the slide member toward or away from the pivot member. A connector is attached to the actuator and is configured to releasably couple the actuator to a drain snake. Rotation of the drain snake actuates the actuator to grip the object when the first ends are adjacent to the object.

Abstract: A cam-operated pipe puller for pulling and extracting a pipe through a conduit wherein the pipe puller has members for grasping the inner sides of the pipe and apparatus attached to the grasping members for holding the grasping members in a retained position as they are initially inserted into the pipe and for releasing and expanding the grasping members to engage the inner surface of the pipe after the grasping members are fully inserted into the pipe so as to pull and extract the pipe from and through the conduit.

Abstract: Slips slidably disposed on a mandrel for lowering into a well inside a tubular to be removed from the well move outwardly to engage the tubular upon withdrawing the mandrel carrying the slips from the well. In one implementation there is a conical surface such that movement between the slips and the conical surface expands the slips outwardly. These inner and outer bodies are relatively moved in the well such that the outer body expands against an inner surface of the tubular in the well preparatory to removing the tubular from the well. After removing the tool string and at least part of the tubular engaged by the slips out of the well, inner structure of the removal tool can be pulled, in a direction opposite to which the lifting force was applied, to disengage the slips from the removed portion of the tubular.

Abstract: An apparatus for handling tubular goods which includes an elongate body having a coupling end adapted for mating engagement with a tubular good. The coupling end includes a structural member, a flexible cylindrical cage and a pressure member. Longitudinal strips joined at their opposed ends form the cage coaxial with and connected to the structural member of the body. The coaxial pressure member is disposed in an annulus between the structural member and the cage. The pressure member is adapted to cause radial displacement of the cage, thereby exerting a gripping force to maintain the mating engagement between the tubular good and the coupling end enabling a transfer of force between the body and the tubular good.

Abstract: Multiple embodiments of a system for capturing displaced fluid or adding fluid to tubulars being run into or out of the wellbore are described. Several embodiments are supported by a top drive with telescoping features to rapidly seal over a tubular to connect the tubular to a mudline. A flapper valve in one embodiment is described to keep fluid from spilling when the apparatus is removed from the tubular. In the event of a well kick, the valve can be shattered with pressure from the mudline. In another embodiment, the apparatus can be placed in sealing contact with the tubular and can incorporate a valve which can be manually closed in the event of a well kick. In yet another alternative, the incorporated valve can be automatically actuated to open as the apparatus sits on the tubular and closed as the apparatus lifts from the tubular. In yet another embodiment, sealing contact with the tubular can be obtained by simply advancing the apparatus into the tubular.

Abstract: An improved tubular running tool and method is disclosed for use on a rotary or top drive drilling rig of the type for inserting and selectively, internally gripping a tubular which may be utilized to lift, lower, rotate, and torque tubulars, and which may be used to fill and/or circulate fluid in and through tubulars and to cement tubulars within a wellbore. The internal tubular running tool may be used as or in conjunction with fill-up and circulating tools and with cementing head wiper plug assemblies among other tools. The tubular running tool includes an improved moving mechanism having a cylindrical pneumatic chamber annularly positioned with respect to a barrel element that forms an axial fluid pathway therethrough. A cylindrical piston is moveable within the cylindrical chamber to thereby move a cylindrical piston rod connected to gripping slips such that the slips selectively engage an interior portion of a tubular member.

Abstract: A tubular running tool and method adapted for use on a rotary or top drive drilling rig of the type for inserting and selectively, internally gripping a tubular which may be utilized to lift, lower, rotate, and torque tubulars, and which may be used to fill and or circulate fluid in and through tubulars and to cement tubulars within a wellbore is provided. The internal tubular running tool may be used as or in conjunction with fill-up and circulating tools and with cementing heads wiper plug assemblies among other tools. The tubular running tool includes: a barrel forming an axial fluid pathway therethrough, the barrel having a top end and a bottom end, the barrel forming a lower connecting section; at least one slip movably connected to the connecting section for selectively engaging an interior portion of a tubular member; and a moving mechanism functionally connected between the slips and the barrel for moving the slips in engaging contact with and from the tubular member.

Abstract: The present invention provides a packer releasing tool for releasing a packer from a wellbore where the packer is coupled to a tubing string and has a releasing profile with a packer uphole shoulder and a packer downhole shoulder. The packer releasing tool preferably comprises a toplock assembly removably coupled to a downlock assembly. It also includes a toplock key that is movably coupled to the toplock assembly and that has a toplock key profile engageable against the packer releasing profile. Also present is a downlock lug that is movably coupled to the downlock assembly and that has a downlock lug profile engageable against the packer releasing profile. In one embodiment, the packer releasing tool has an outer diameter that is less than the inner diameter of the tubing string. This unique configuration allows the packer to be pulled without the need of first removing the production string.

Abstract: A retrieval head (14) coupled to a downhole tool that is used for retrieving a drill bit composed of individual drill bit segments (14). The down hole tool is adapted to travel through a drill sting and a drive sub (12) attached to the drill string. The tool also releases segments (14) which are clamped between the drive sub (12) and a bit locking sleeve (16). The retrieval head (10) includes a body (30) having a first length (32) and a contiguous second length (34). The first length (32) is of constant diameter. The second length (34) has a portion (42) of reduced diameter relative to that of the first length (32). The diameter of the first length (32) is dimensioned so that the bit segments (14) can initially collapse radially inwardly wholly onto an outer circumferential surface (38) of the length (32). The reduced diameter portion (42) is dimensioned so that when the bit segments (14) are disposed thereon, the bit segments (14) can pass through the drive sub (12) and bit locking sleeve (16).