Providing support for well part (e.g., hanger or anchor)

A well tool and more particularly a hanger or setting tool actuating assembly for hanging a liner in a well or setting various other well equipment in a desired sub-surface position. The actuating assembly includes a magnet which is moved by means controlled remotely therefrom to cause a member magnetically...     

The described invention includes method and apparatus for the installation of a casing hanger supporting a string of casing down hole in an oil or gas well, for removal of the installation equipment, and for tying back the hanger to an insulated production riser extending to the surface. The casing hanger...     

A well locking device and method of operation including a well lock and a landing nipple for locking well equipment in the production string of oil and/or gas wells. The well lock includes two sets of locking dogs, one of which locks the well lock in the landing nipple and holds against loads either...     

An elongated tubular nipple is provided including upper and lower ends. The interior of the nipple defines a longitudinal bore extending therethrough and the lower and upper ends of the bore are downwardly and upwardly flared, respectively. The upper end portion of the nipple includes an externally threaded...     

Production tubing extends through a well bore to a well producing formation, and after well fluid stops flowing through the tubing under reservoir pressure, the well fluid is hydraulically pumped to the surface through the existing tubing, which avoids pulling the tubing and replacing it with a separate...     

Subsurface apparatus and method for using same in a hydrocarbon producing well to enable retrieval of a full opening subsurface safety valve mounted in the well tubing without disturbing the major portion of the well tubing located below the safety valve. The apparatus includes a subsurface tubing hanger...     

A sealing assembly comprising a casing bore receptacle, an annular packoff member, and a tubing carried mandrel for use in establishing sealing integrity between a fluid transmission conduit or tubing and an outer conduit or casing, is disclosed. The casing bore receptacle is incorporable in the casing...     

An apparatus is provided for producing a well from at least one productive zone penetrated by the well bore in which casing is set below the top of the well. Tubing hanger means support at least one production tubing string extending downwardly in the well bore and communicating with a production zone....     

A subsurface safety valve is combined with a locating means for locating the safety valve as it is pumped down into the well. A locking mandrel is provided that locks the safety valve in position after it has been located by a downward force being exerted on the locking means. When it is desired to remove...     

A subsurface well bore completion assembly without convention inflatable or cup packer elements. The completion is effected by cementing a member having an internal sealing surface in place within the well then running tubing string terminating with a sealing adapter having matching sealing face into...     

Apparatus and method of positioning and seating a retrievable insert landing assembly within a packer bore receptacle in a well bore. Means are provided for releasably securing a landing assembly in the packer bore receptacle by engaging an annular groove in the PBR with latching elements on the landing...     

This invention relates to an expendable tool, such as a plug assembly, which may be locked within a tubular member, such as a packer assembly, located within a well casing, and a method of locating and releasing same. The plug assembly comprises a main housing adapted to support a plurality of circumferentially...     

A self powered downhole tool anchor device (10) preattached to a downhole tool (T) and unitarily supported by a drill string (DS) for a single trip into a well bore, actuated by forceful engagement with the bottom or plug (P) in the well bore and attachment to a well bore casing (C). The anchor device...     

An improved shifting tool connectable in a well tool string and useful to engage and position a slidable sleeve in a sliding sleeve device in a well flow conductor. The selectively profiled shifting tool keys provide better fit with and more contact area between keys and slidable sleeves. When the engaged...     

Apparatus and methods are provided for installing and removing a downhole rod pump form a well while preventing flow of fluids from the well through a production tubing string.

A setting tool of the type adapted to be made up in a pipe string for releasably engaging a setting sleeve in a well bore is shown which has a mandrel having an upper end adapted to be connected in the pipe string and having a lower end. A setting nut carried on the mandrel has external connecting threads...     

A retrievable well packer is shown of the type adapted for releasable setting within a well conduit. The packer has a central mandrel extending within an outer assembly, seal members carried on the outer assembly for sealingly engaging the conduit, anchoring slips carried on the outer assembly for grippingly...     

A setting tool is shown of the type adapted to be made up in a pipe string for releasably engaging a setting sleeve in a well bore. The setting tool has a mandrel having an upper end adapted to be connected in the pipe string and having a lower end. A setting nut is carried on the mandrel having external...     

An apparatus, such as a shear-out safety joint, which is incorporated in a subterranean well tubing string for separating or severing the tubing string when subjected to excessive loads is disclosed. The shear-out safety joint is used with a safety valve and by providing a prescribed failure point will...     

A hanger apparatus for suspending an upright inner pipe from an outer pipe including a pair of load-bearing rings interposed between the two pipes. The inner and outer pipes have opposed frustoconical load-bearing shoulders receiving the rings therebetween. In one embodiment, both rings engage the inner...     

A hydraulic setting tool is shown of the type used to set a downhole device in a well bore. The setting tool includes an elongated tubular body adapted to be supported from a wireline within the well bore. The body has an outer sleeve portion and an inner piston portion slidably received within the sleeve...     

A sub-sea well assembly has features to eliminate side-to-side movement between a wellhead and a wellhead housing due to movement of the drilling vessel. The wellhead extends into the wellhead housing and is connected on its upper end to equipment extending to the vessel. Slips are located in an annular...     

An annular packoff assemblage is provided for selective engagement with any one of a plurality of casing seal bore receptacles spaced along a casing string. The packoff assemblage includes an upper latching assemblage for cooperation with an upwardly facing no-go shoulder providing in the selected seal...     

A locking apparatus for positioning a well tool within a subterranean well bore and comprising a primary locking member attached to the well tool; a nipple incorporable in a subterranean well conduit; and running and retrieving tools for positioning the lock member is disclosed. The lock has a no-go...     

A sealing assembly comprising a casing bore receptacle, an annular packoff member, and a tubing carried mandrel for use in establishing sealing integrity between a fluid transmission conduit or tubing and an outer conduit or casing, is disclosed. The casing bore receptacle is incorporable in the casing...     

An anchor seal assembly is shown of the type used to anchor tubing within the bore of a surrounding conduit to provide a seal between the conduit bore and the tubing. A threaded connector circumscribes a portion of the exterior of the tubing. The threaded connector has external threads for matingly engaging...     

An annulus subsurface safety valve for installation between inner and outer concentric members and controlling a fluid passageway therein in which the safety valve is locked to the outer member when the fluid passageway is closed. The outer member is provided with a threaded section and the safety valve...     

There are disclosed several alternate embodiments of wellhead apparatus of the type in which hydraulic fluid may be transmitted to and/or from a subsurface safety valve or other hydraulically operable device within the well through an annular space formed between the production tubing.

A method and apparatus for permanently locking a shiftable valve member in a well conduit in an open position is provided by permitting a spring metal band to expand from a contracted, run-in position to a radially enlarged locking position holding the shiftable valve member in an open position. Positioning...     

A locking apparatus for positioning a well tool within a subterranean well bore and comprising a primary locking member attached to the well tool; a nipple incorporable in a subterranean well conduit; and running and retrieving tools for positioning the lock member is disclosed. The lock has a no-go...     

A system is provided for gravel-packing a zone of a well. The system includes a liner hanger setting apparatus for setting a liner hanger located below the apparatus within the well. The liner hanger setting apparatus includes a housing having a housing bore disposed therethrough. A ball valve is disposed...     

A hanger for hanging a string of conduit within a wellhead has a metal-to-metal seal. The hanger has a body that locates within the wellhead and provides an annular clearance between the body and the wellhead. A locking device fits within this clearance to lock the hanger against axial movement. The...     

A subsea well casing suspension system whereby each of a plurality of concentric casing strings and its hanger is directly and totally supported on the wellhead housing, independently of all the other strings and their hangers, by a plurality of load ring slips that are components of a packoff assembly...     

The subsea wellhead system includes a wellhead, a housing seat disposed in and connected to the wellhead, a casing hanger supported by the seat, a holddown and sealing assembly in the annulus between wellhead and hanger, a running tool attached to the hanger for lowering it into the well and initially...     

An equipment insert is shown for use within a section of well pipe. The equipment insert is installed within the pipe bore at the well surface. The equipment insert is run into the bore of the well pipe and manipulated with a hand tool to actuate gripping slips and a seal ring to grip the pipe interior...     

For a downhole seismic tool, a securing mechanism which uses an arm which swings from the side of tool and into contact with the earth, causing the tool also to come to rest against the opposite side of the borehole on at least one pair of lugs protruding from the opposite side of the tool.

Disclosed is a casing hanger 10 and running apparatus 16 wherein the casing hanger 10 is mechanically supported by a running thread ring 70 onto a running tool 20 for lowering into a wellhead 12, and wherein the packoff assembly 14 is held above the casing hanger 10 for circulating and cementing operations...     

The present invention relates to an improved liner hanger adapter containing a tapered brass sleeve which is arranged to wedge into a section of reduced diameter casing and is connected above an expansion joint for accommodating the thermal expansion and contraction of a well liner such as a wire wrapped...     

A running tool (20) comprising a stem (22) with a plug (40), a running nut (30), a wedge (32), a cam ring (34), and a bottom nut (36) together releasably connect and support a casing hanger (12), wear bushing (14) and packoff assembly (16) thereon. The bottom nut (36) supports the cam ring (34) and is...     

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...     

A retrievable production seal assembly is shown for engaging and sealing within the internal bore of the liner within a well. A special latch mechanism carried on the seal assembly includes an externally threaded latch collet which can be stabbed into the setting sleeve threads which are normally provided...     

The fixation of a packer or other borehole device is provided by explosively bonding the device to the borehole casing in the desired location. The explosively set packer is oriented in the borehole casing on a setting tool which preferably includes a casing scraper to clean the interior surface of the...     

A removable bushing for slidably and sealably supporting a mandrel within the bore of a well conduit comprises an outer tubular body insertable in the well conduit in series relation. Said outer tubular body defines an internal seal bore and an annular latching recess adjacent the seal bore. An internal...     

A running tool (RT) comprising a stem (10) with a torque ring (44), a running nut (36), an engagement sleeve (40), and a lock ring (42) to releasably connect and support a casing hanger (C), a two piece (16,20) wear bushing (WB) and packoff assembly (P) thereon. The lock ring (42) is wedged into engagement...     

A cementing apparatus is shown for use with a wireline run setting tool. The apparatus includes a retainer with external gripping and sealing members for sealing off a lower region of the well below the sealing members. The cement retainer has a plurality of cementing ports at the lower end thereof which...     

A drilling template for multiple wells has a dummy post on the template associate with each wellhead position and a wellhead connector is transferable between the dummy post and wellhead during completion and workover operations. A subsea wellhead is provided with a guide frame on which a dummy post...     

A running tool is used to set a seal on a casing hanger in a wellhead. The running tool has a holder for connecting the running tool to the casing hanger as it is lowered into the wellhead. A piston is carried on the running tool above the seal. An actuating passage extends from an axial passage in the...     

A mechanical setting tool for setting a flow control tool in an oil or gas well using the drill string includes a mandrel with means for attachment to the end of the drill string. Slips are releasably carried on the mandrel by a first release structure. A cone is releasably carried on the mandrel by...     

A downhole running tool for positioning and locking tool support mandrels within landing nipples of the production tubing string of a well. A housing is provided which forms an internal receptacle receiving upper and lower core sections forming an elongated core which is telescopically movable to collapsed...     

An improved wellhead structure including a wellhead housing having a sealing surface with grooves therein and pressure compensating material in the grooves, a sealing sleeve having inner and outer resilient seal rings and an internal actuating groove with upper and lower shoulders, an actuating ring...     

A tubing string resettable packer is conditioned for initial wireline installation in a well utilizing an adapter within a mandrel carrying the slip assembly of the packer and frangible connecting means between the sealing assembly and mandrel to place the sealing assembly in an alternate transport condition...     

The present invention in its preferred embodiment comprises a combination anchor including a first tubular member having a circular shoulder formed around the perimeter of its bore. Adapted to be releasably inserted inside the tubular member is a bullplug comprising a cylindrical shaped plug member with...     

There is disclosed an apparatus including a tubing spool and tubing hanger which overcomes problems associated with servicing of oil and gas wells under pressure. In the invention, a tubing hanger can move through a tubing spool and be seated and sealed from the outside the tubing spool. The tubing hanger...     

A running tool for lowering, landing and setting a well structure, such as a hanger and an annular seal for sealing between the exterior of the hanger and the interior of the well in which the well structure is landed including a mandrel having means for connecting to a running string, a tool body surrounding...     

Apparatus for effecting locking engagement with a well conduit recess comprises a locking tool having radially shiftable locking lugs which are shiftable to a locked position in the conduit recess by downward movement of a lock mandrel. A running tool is secured to the lock mandrel by a plurality of...     

A hydraulic setting tool for packers. The setting tool comprises a case with a ball valve therein, a bypass passageway for bypassing around the ball valve when the ball valve is in a closed position, a fill valve for closing the bypass passageway when desired, and a packer setting sleeve for hydraulically...     

A well production system utilizing a submersible pump in which a parking mandrel is slidable around a flexible line and connected to the top of a string of test tools carried by the line. When the tools and mandrel are lowered into the well, the mandrel locks in a landing nipple in tubing below the pump....     

An improved setting tool is provided for positioning, setting, and releasing a liner in a subterranean wellbore. The setting tool includes a plurality of fingers, each biased for locking engagement with axially spaced recesses provided in the wall of the tool mandrel axially above a lowermost position...     

A system for cementing liners in well bores where a liner and drill pipe are made up in telescopic relationship with the lower end of the drill pipe having a polished mandrel or slick pipe slidably and sealingly received in a sealing bore receptacle in the lower end of the liner at a location just above...     

An improved wellhead structure having a housing with an internal landing seat to receive the landing shoulder on a hanger having a bore with a counterbore below the bore and a shoulder between, a hanger mandrel positioned within the counterbore and having an external flange having a diameter less than...     

The present invention provides an apparatus for anchoring of equipment within the interior bore of a section of a subterranean well conduit, and particularly for insertion of such equipment. The apparatus comprises a cylindrical housing and a conically tapered surface around the exterior of the housing...     

A liner setting assembly is useful in setting a liner into a casing string secured in a borehole of a well. The liner setting assembly includes a cone and a cage. The cone enables slidably fitting over the liner, the cone having grips with an oblique notched face forming an engaging surface. The cage...     

A tieback system for a subsea well utilizes a tieback connector. The tieback connector has a body that lands on a wellhead housing located on a sea floor. A funnel extends downward from the body for sliding over the wellhead housing. A lockdown sub is carried by the body and has a set of tapered threads...     

There is disclosed an offshore well installation wherein a shoulder of a casing hanger body supported within a casing head on a platform at the water surface has been lowered onto a seat in the head so as to support a casing string anchored at its lower end to a mudline hanger in tension, the lower end...     

A wear bushing for a casing hanger mounts to the bore of a casing hanger before the casing hanger is lowered into the well. The running tool for running the casing connects to the wear bushing. The wear bushing has a setting ring that connects to the seal for the casing hanger. The running tool has a...     

A hanger for suspending a liner in a cased subterranean well comprises an elongated tubular body having ramp elements formed on its exterior and a plurality of peripherally spaced slip elements secured to a sleeve piston surrounding the lower end of the tubular body. Seals provided intermediate the piston...     

A pack-off tubing hanger is shown for use in a tubing string extending from a well surface location to a downhole location within a well casing. The hanger body includes an external packing element and gripping slips which support the hanger body within the surrounding casing. A longitudinal passageway...     

A well tool having an anchor device, straddle packers above and below a port and an internal valve which are operated by longitudinal motion in an inflatable packer device. The well tool anchor is armed by a hydraulic operated plug and set upon downward motion in a locating profile groove in a well bore....     

A liner hanger assembly is disclosed for setting within a casing conduit and carrying a liner string therebelow. The assembly has slip elements for gripping the casing with each of the slip elements having symmetrically angled teeth such that only one set of slips may be used to anchor the hanger and...     

A wellhead assembly comprising housing (1), an outer casing hanger (20) and at least one inner casing hanger (22,24) for suspending casings concentrically into a well. Each casing hanger (20,22,24) is provided with an external supporting shoulder (26,40,60), the external supporting shoulder (26) of said...     

An apparatus and method for supporting and sealing a string of casing in a well utilizes the weight of the casing to form the seal. A tubular housing locates at the surface of the well. A seal sleeve is placed on a landing shoulder in the bore of the housing. A suspension mandrel connects to the upper...     

The invention relates to apparatus for protecting wellhead bores during drilling operations, and more particularly to bowl protectors for preventing damage to wellhead bore seal surfaces as drilling equipment passes through the wellhead. The invention includes a bowl protector and a seperable false bowl...     

A three-component adjustable mandrel well casing hanger that can be attached to the upper end of a tie-back sub or string to effect a tensioned connection between a subsea location and a surface wellhead of an offshore well.

A tubing hanger assembly having a metal-to-metal seal assembly for sealing the annulus between the tubing hanger assembly and an outer casing hanger assembly. The metal-to-metal seal assembly includes a static metal-to-metal seal for sealing with the tubing hanger assembly and a dynamic metal-to-metal...     

A whipstock setting apparatus includes a whipstock with a mandrel secured thereto and depending therefrom. A cutter, or mill is connected to a work string and releasably connected to the whipstock. A packer assembly including a mechanical weight set packer and upper and lower cone and slip means are...     

An anchor is disclosed which is engageable by application of a downward load which allows collets having a thread form to engage a thread form on a packer body. Further letting down on the tool locks in the collets anchoring the tubing string. Release is accomplished by an upward pull which shears a...     

An apparatus to support washpipes has a pair of substantially mirror image components which, when clamped together about an inner string, define an annual chamber for receiving and supporting the ends of one or more washpipes.

A wellhead housing a supports a string of casing in tension by using a load ring. The load ring mounts to the exterior of a casing hanger which secures to the upper end of the string of casing. The load ring is split, resilient and outwardly biased. The load ring is retained during the running of the...     

An adjustable mandrel hanger assembly will maintain tension in a section of casing extending from a subsea location to a surface wellhead. The assembly has a mandrel that secures to the upper end of the casing. The mandrel has grooves on its exterior. A collet slides over the mandrel and has grooves...     

An internal tieback connector for a subsea wellhead housing has a body which lands on the wellhead housing. A funnel extends over the wellhead housing. An internal connector element carried by the body will engage a profile in the wellhead housing. A connector actuator when moved axially downward will...     

A casing or tubing hanger has a metal seal which also incorporates a locking device which locks the seal to the wellhead housing. An annular recess is formed in the bore of the wellhead housing. The seal has an energizing ring that moves downward to set the seal. A split lock ring is carried by the assembly...     

A well assembly utilizes a casing tensioning system that allows a preselected amount of stretch to be applied in the casing. The assembly includes a tubular mandrel that secures to the upper end of the string of casing. A load ring has internal grooves that mate with exterior grooves on the mandrel,...     

An internal lockdown will lock a tubing hanger in a wellhead housing. The tubing hanger has a conical cam surface formed on the exterior. An internal profile is located in the bore of the housing in alignment with the cam surface. A landing sub secures to a threaded bore of the tubing hanger and protrudes...     

A whipstock and method of using same wherein first and second opposing ends of the whipstock are joined by opposing back and guide surfaces and the second or upper end of the whipstock is composed of at least two surfaces, the first surface being angled so as to direct a well tool impinging thereon toward...     

An anchor assembly may be used for interconnecting a downhole tubular member with a packer affixed within a well bore. The anchor assembly may include a mandrel fixedly secured to production tubing, and a collet mechanism axially movable relative to the mandrel. The collet mechanism may have a plurality...     

A millout whipstock has a cylindrical body with a stabbing nose at the bottom and a deflection shoe at the top. A drill string extending through the deflection shoe is connected to a pressure housing keyed in a torque key housing in the body. A piston, mounted in a piston housing secured in the body...     

A tool, known as FM/WL Tool, utilized with a wireline adaptor kit would be secured to the lower end of a wireline setting tool. The adaptor kit would release from the tool when sufficient setting force is applied, and is retrieved with the wireline setting tool. The wireline setting tool provides for...     

There is described a method and apparatus for connecting the end of coiled tubing to a downhole tool string, comprising a first tubular housing having a first uphole and a second downhole end and a bore formed therethrough for a length of coiled tubing, a second tubular housing adapted for releasable...     

A tubing hanger for locking to a tubing head is provided on its outer surface with a metal seal that seals between the tubing hanger and the tubing head when weight or hydraulic pressure is applied on the tubing hanger. This can be done either as a result of the weight of tubing hanging from the hanger...     

A well has a metal seal for sealing between tubular inner and outer members. The seal has a solid metal body with an inner wall and an outer wall that are cylindrical. The radial thickness of the seal is initially greater than the pocket between the inner and outer tubular members. Also, the inner diameter...     

An apparatus for rotatably hanging a tubing string in the wellhead of a well casing. The apparatus includes a tubing hanger shell that has a mandrel rotatably mounted therein. The mandrel has upper and lower ends with the upper end connected to a tubing rotator and the lower end engaging a tubing string....     

A self-contained, telescoping liner hanger setting tool is adapted to set a hanger and attached liner within a wellbore; release the liner hanger by unthreading a running nut securing the tool to the hanger and rotating the liner, after the tool is released from the hanger, during a cementing process,...     

A whipstock assembly is provided for lowering within a cased wellbore, cutting a window through a casing for drilling a sidetrack borehole, and retrieving with conventional fishing tools. The whipstock assembly includes two separate whipstocks having different tapers, and which are releasibly coupled...     

A slip release system is disclosed which undermines support for slips by virtue of selective weakening of a structural element supporting the slips in a set position.

This invention relates to a permanent whipstock assembly which uses camming pivot arms to secure the whipstock at the desired location within a cased wellbore. Camming pivot arms are pivotally attached to the downhole end of a whipstock housing and are further attached to a slip pad. Intentionally induced...     

A downhole coiled tubing latch for positive latching to a drill pipe while pumping fluids. The apparatus comprises a housing positioned in the drill pipe with a slidable mandrel positioned in the housing. The apparatus further comprises a latch stinger which can be lowered on a coiled tubing and sealingly...     

A string of tubular members is suspended in tension from a surface wellhead by suspending the string from a hanger within a bore in the wellhead; supposing a support member on the wellhead; moving the support member into engagement with the hanger; inserting at least one support shoulder on the support...     

A system for releasing a downhole tool such as a packer is revealed which allows the tool to retain its set position against a very high loading force which can occur during operations such as perforating or acidizing or other formation treatments. Subsequently, before environmental conditions can adversely...     

The present invention, in certain embodiments, includes a wellbore tool side support or stabilizer (in one aspect for a concave of a whipstock in a wellbore or in a tubular) which has one or more movable members or bars which are movable from a non-supporting position in, partially in, or on a tool (or...     

A wellhead having, instead of a conventional Christmas tree, a spool tree in which a tubing hanger is landed at a predetermined angular orientation. The tubing string can be pulled without disturbing the tree and access may be had to the production casing hanger for monitoring production casing annulus...