Abstract: A single wiper is releasably and sealably positioned adjacent the lower end an operating string and locked therewith to prevent premature release from the operating string upon manipulation of the operating string. The sealing relationship between the wiper and the operating string prevents communication of operating string pressure from the operating string to the resilient ribs of the wiper adjacent the position of the wiper on the operating string. When a pump down plug is sealably seated within the bore of the wiper, fluid pressure is confined to act on a piston between the operating string and the wiper to unlock the wiper from the operating string so that it may be released therefrom.

Abstract: An operating string has upper and lower wipers with external seals thereon releasably connected to the operating string. A lock arrangement prevents premature release of the upper and/or lower wiper by mechanical force, but is responsive to fluid pressure in the operating string to first release the lower wiper from the operating string prior to release of the upper wiper. The upper wiper cannot be released from the operating string until the lower wiper has released from the operating string. Seals are provided to close off communication between the operating string bore and the external wiper seals to confine the pressure present in the operating string in a manner to assure release of the wipers as and when desired and in a sequence as may be desired.

Abstract: A hydraulic running and release tool includes a mandrel, outer sleeve, latch nut and piston which may be hydraulically or mechanically actuated to release the tool from a tubular member after it has been positined in a well bore.The latch nut and piston are releasably connected together by a shear member between the outer sleeve and the mandrel and the latch nut is releasably connected to a tubular member, with the piston positioned adjacent the releasable connection between the latch nut and tubular member to prevent premature disconnection of the latch nut from the tubular member.To release the hydraulic tool, fluid pressure through a port in the mandrel from the well string acts on the piston to shear the member that connects the piston to the latch nut so that the piston shifts away from the releasable connection.

Abstract: A well bore operating string has upper and lower wipers thereon with the wipers releasably connected by a frangible member for releasing the wipers in response to pressure in the operating string. Seals are provided to close off communication from the operating string bore to confine the pressure present in the operating string in a manner to assure release of the wipers as and when desired and in a sequence as may be desired. Upper and lower pump down plugs sealably seat, respectively, in the upper and lower wipers to form a movable, mechanical barrier to isolate or wipe ahead of and behind a substance for movement through the operating string and subsequent discharge into the well bore.The wipers are each connected to the operating string to prevent relative rotation therebetween to further reduce the possibility of malfunction or improper functioning in releasing the wipers.

Abstract: A retrievable landing method and assembly for lowering on a well string into a well bore a retrievable receptacle having a landing shoulder and sealably securing it in position on a tubular member landing seat. The retrievable receptacle is releasably coupled to the well string and after the retrievable receptacle landing shoulder engages the tubular member landing seat, the well string is manipulated to actuate the releasable coupling and release the well string for movement relative to the retrievable receptacle. Latch means associated with the retrievable receptacle are responsive to the well string manipulation to secure the retrievable receptacle sealingly with the well bore tubular member.

Abstract: An arrangement for lowering into a well bore casing on an operating string to sealably engage a packer that is supported on a tubular member so that the packer can be set either by a combination of hydraulic or mechanical action or mechanical action alone or hydraulic action alone includes a packer supported by a tubular member. An outer tubular member extends from adjacent the other end of the packer and telescopically receives the tubular member and a release mechanism releasably connects the tubular member and the outer tubular member with the operating string. A lock arrangement locks the tubular member and the outer tubular member together against relative longitudinal movement and the lock arrangement is operable after the release mechanism is actuated to disconnect the tubular member from the operating string whereupon said outer tubular member may be moved relative to the tubular member to expand the packer into sealing engagement with the casing.

Abstract: An operating string O is provided for conducting cementing operations in a well bore.The operating string O is shown sealably and releasably connected with a liner L and extends through upper liner wiper means 45 and terminates in overlapping relationship to lower liner wiper means 26, both of which wiper means 26 and 45 are releasably secured to the operating string O with the lower liner wiper means 26 releasably secured below the upper liner wiper means 45 so that its bore 28a originates adjacent and extends away from the lower end of the upper liner wiper means 45.The operating string O includes positioning means H to hang the liner L on well bore casting C, and means 145, 146 and 148 to rotate and reciprocate the liner L before hanging it and/or to rotate the liner L during and after cementing.

Abstract: A mechanical or hydraulic actuated liner hanger for supporting on an operating string to be lowered to position a liner on a tubular member in a well bore includes an integral tubular body having upper and lower annular rings thereon. A surface is provided on each ring to enable upper and lower cone segments to be positioned on each upper and lower ring, respectively, and a surface is provided on each ring that cooperates with a surface on the cone segments interlocks and retains the cone segments removably on their respective ring. A securing device may removably secure the cone segments in position on each ring. A sleeve is slidably supported on the body by lugs on the body and a recess arrangement. The sleeve includes upper and lower slip arms secured at one end on the sleeve and extending therefrom with upper and lower slip segments secured on the end of each the upper and lower slip arms.

Abstract: A retrievable packer arrangement that can be used as a permanent production packer employs a simple compression set packer which can be either mechanically, hydraulically or wireline explosively set and retrieved by coupled or coiled pipe or wireline.The arrangement includes an adapter supported by the setting tool which surrounds an external seal surface on the upper end of an inner tubular member which seal surface is exposed after the packer arrangement is set in a well bore tubular member by release of the setting tool from the inner member and removal of the adapter therewith, so that a production string may then sealingly telescope over the inner member upper end.An outer member includes release means adjacent its upper external end including an external grapple engaging surface means so that the packer arrangement can be released without engaging the packer or slips which secure the packer arrangement in the tubular member and without inserting any mechanism in the set packer arrangement.

Abstract: The present invention relates to a method and apparatus for cementing a liner in a well bore having a casing wherein the liner is connected to a running tool and includes hanger means for securing the liner to the casing in the well bore. The liner includes an upper and lower liner portion each having port means therein and means to lock the telescoping liner portions against relative longitudinal movement to prevent premature actuation or operation of the port means.The liner portions provide a mechanically actuated port arrangement to be employed with first and second liner wiper means and first and second pump down plug means for cementing above a packer on the lower liner portion, or for providing dual stage cementing.

Abstract: A manifold arrangement for use with a top drive power unit to enable fluid circulation to be conducted to a well string for well bore conditioning to be effected with cementing plugs in place in the manifold arrangement and for conducting a pumpable substance such as cement to the well string without first circulating it through the top drive power unit.

Abstract: Method and apparatus for supporting a liner on an operating string mandrel so that the liner can be lowered into a well bore and selectively rotated and reciprocated. The liner includes rigid splines which are initially engaged with rigid splines releasably engaged on the operating string mandrel to enable the liner to be selectively rotated and reciprocated before positioning on the well bore casing.The liner is secured or positioned on the well bore casing and the operating string can then be manipulated to release the mandrel from the rigid splines releasably engaged thereon. The mandrel rigid splines and mandrel have cooperating surfaces which reconnect the mandrel rigid splines to the mandrel whereupon the mandrel rigid splines can then be disengaged from the liner rigid splines so that the mandrel can be released from the liner.

Abstract: Relatively rotatable inner and outer tubular bodies include ports for communicating a well string in which the bodies are connected with the well bore. A seal between the bodies surrounds the port in one of the bodies to control communication between the bodies and well bore when the bodies are rotated to align and misalign the ports. A restrainer engages the well bore to restrain one of the bodies while the other is rotated by the well string and a receptacle with a port between seals that engage the well bore is provided so that a treating fluid placed in the well string may be pumped down while the body ports are open to discharge well string fluid to the well bore and when the treating fluid reaches the bodies, the ports are closed so the treating fluid may be discharged through the receptacle ports into the well bore zone isolated between the seals on the receptacle.

Abstract: For use with a top drive power unit supported for connection with a well string in a well bore to selectively impart longitudinal and/or rotational movement to the well string, a feeder for supplying a pumpable substance such as cement and the like from an external supply source to the interior of the well string in the well bore without first discharging it through the top drive power unit including a tubular member or mandrel extending through an outer housing which is sealably and rotatably supported thereon for relative rotation between the outer housing and the tubular member. The mandrel and outer housing have flow passages for communicating the pumpable substance from an external source to discharge through the outer housing and mandrel into the interior of the well string below the top drive power unit.

Abstract: Apparatus releasably supported on a setting string responds to manipulation of the setting string to release therefrom and anchor to a tubular member. A member on the setting string is provided with a tubular member engaging arrangement which responds to further manipulation of the setting string to anchor the member in the tubular member. A disconnect is operable upon manipulation of the setting string to disconnect the setting string from the anchored member and a release arrangement enables the disconnected setting string to release the anchored apparatus from the tubular member.

Abstract: A running string is releasably connected to a liner an liner hanger setting arrangement for lowering into a well bore casing and securing the liner to a casing. The liner hanger setting arrangement includes a first sleeve with upper and lower annular rows of conically shaped segments circumferentially spaced thereon. Upper and lower spaced rows of hanger slips are connected to a second sleeve by elongated strips and the second sleeve is releasably secured to the first sleeve whereby the second sleeve may be released from the sleeve for relative longitudinal movement therebetween to move the hanger slips onto the segments and secure the liner to the casing. The space between the segments in each row is substantial to accommodate relatively unrestricted fluid flow thereabout as the apparatus is manipulated and operations conducted in the well bore.

Abstract: Apparatus and method of positioning and seating a retrievable insert landing assembly in a well bore tubular member with a left-hand threaded portion and having a sealing bore above or below the threaded portion. A releasable connecting arrangement secures the landing assembly in a well bore tubular member by engaging with the left-hand threaded portion in the tubular member. The landing assembly has an internal polished bore above the connecting arrangement which slidably and sealingly receives a tubular extension attached to a well string. The connecting arrangement is actuated by lowering the retrievable landing assembly within the tubular member to position the connecting arrangement adjacent the left-hand threaded portion and then lifting up on the landing assembly to lock it with the left-hand threaded portion. The well string is manipulated to actuate the releaseable coupling and disconnect the well string from the landing assembly after it is connected with the tubular member.

Abstract: A liner and a hydraulic liner hanger setting arrangement for setting the liner in a well bore casing includes a setting tool having a tubular mandrel connected in a pipe string to extend through the hydraulic setting arrangement with the liner forming an outer housing surrounding the liner and to form a longitudinally extending annular recess therebetween with one end of the recess exposed to the well bore. Longitudinally extending piston means are sealably engaged in the recess with the piston means having a cone shaped end. Slips are releasably secured to the liner and means are provided to retain and to lock the piston means against premature retraction into the recess. A port in the housing communicates fluid pressure from the mandrel to the housing recess to move said piston means in the recess and engage the cone shaped end thereof with said slips to urge them into engagement with the well bore casing and thus secure the liner in position.

Abstract: A valve arrangement includes spherical core means rotatably mounted in a tubular member with operating means connected to the spherical core means and rotatably supported in a lateral opening in the tubular member to open and close the spherical core means for controlling flow through the tubular member. Seal means are provided between the spherical core means and tubular member and between the operating means and the tubular member with the operating means and the spherical core means having fluid passage means to conduct fluid from the tubular member fluid passage to act on the seal means between the operating means and the tubular member to substantially counterbalance the fluid pressure in the tubular member.

Abstract: A method and apparatus for positioning and bonding a liner in a casing in a well bore wherein a pack off bushing is provided between the liner and the well string on which the liner is lowered into the well bore for discharge of a bonding agent through the well string and around the liner in the well bore.The seal or pack off bushing is constructed and arranged so that it may be retrieved after the positioning and bonding operations are completed along with the well string upon which the liner is initially lowered into the well bore.