US3279539A - Well casing hanger and method for hanging same - Google Patents

Well casing hanger and method for hanging same Download PDF

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Publication number
US3279539A
US3279539A US432160A US43216065A US3279539A US 3279539 A US3279539 A US 3279539A US 432160 A US432160 A US 432160A US 43216065 A US43216065 A US 43216065A US 3279539 A US3279539 A US 3279539A
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US
United States
Prior art keywords
casing
mandrel
shoulder
head
casing head
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US432160A
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English (en)
Inventor
Cicero C Brown
Jr Charles E Wakefield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Richfield Oil Corp
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Richfield Oil Corp
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Filing date
Publication date
Priority to DENDAT1302138D priority Critical patent/DE1302138B/de
Application filed by Richfield Oil Corp filed Critical Richfield Oil Corp
Priority to US432160A priority patent/US3279539A/en
Priority to NL666601791A priority patent/NL153635B/xx
Priority to GB6342/66A priority patent/GB1142803A/en
Application granted granted Critical
Publication of US3279539A publication Critical patent/US3279539A/en
Anticipated expiration legal-status Critical
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads

Definitions

  • the present inveniton relates to the production of oil and gas from a well, and more particularly, relates to apparatus and a method for hanging a casing in a casing head whereby the casing is positively locked in the casing head prior to cementing the casing in the formation.
  • a further object of the present invention is to provide 3,279,539 Patented Oct. 18, 1966 a casing hanger assembly having hydraulically actuated locking means to hold the sealing element seat after setting pressure has been released.
  • Another object of the present invention is to provide a casing hanger assembly having pressure equalizing means to prevent premature setting of the seal between the casing and the casing head by pressure differentials to which the casing hanger assembly may be subjected during the cementing operation.
  • FIG. 1 shows the casing hung according to the present invention within the casing head showing the casing head and tubing head mounted in a well;
  • FIG. 2 shows in partial cross section the casing hanger locking and sealing apparatus
  • FIG. 3 shows in partial cross section the casing hanger running and setting tool used in conjunction with the present invention
  • FIG. 4 is a view, partly in section and partly in elevation, of a form of the present invention modified for hydraulic setting of the casing hanger seal, showing the casing hanger as it is carried in the hole by the running and setting tool and landed against the indexing shoulder in the casing head;
  • FIG. 5 is a view, partly in section and partly in elevation, showing the relation of the apparatus of FIG. 4 at the point directly after the cementing operation is carried out showing the plugs in place in the landing collar.
  • FIG. '6 is a view, partly in section and partly in elevation showing the relation of the apparatus of FIGS. 4 and 5 after the setting ball is dropped through the setting string and pressure is applied to set the packer;
  • FIG. 7 is a view, partly in section and partly in elevation, showing the relation of the apparatus of FIGS. 4-6 as the setting tool is released from the casing hanger and is being removed from the hole.
  • our present invention involves a means for hanging the casing 60 within a casing head 61 by locking the casing down on a shoulder 79 within the casing head with a spring loaded dog 80, after which the casing can be cemented into the formation prior to setting the packer 94 so that the cement returns may be circulated through the annulus 81.
  • the expression casing head as used herein refers to any well member in which a casing is landed or hung, including a casing hanger mandrel where multiple casings are hung one within another.
  • the packing element 94 is then extruded to seal off the annulus 81 without making an additional trip into the hole, that is without retrieving the running tool and then running a setting tool to position packing or sealing means.
  • a casing hanger mandrel 62 is installed on the upper end of the casing string 60 equipped with a conventional shoe and collar (not shown) on and near the bottom thereof.
  • the casing hanger running and setting tool 63 shown in FIG. 3, is then inserted in the easing hanger mandrel 62 with the lugs 64 of the setting nut 66 entering the splines 68 of the casing hanger drive sleeve 92 and the running and setting tool lowered into the casing hanger mandrel '62 on a drill pipe (not shown) until the bearing race 72 rests on top 74 of the mandrel of the casing hanger mandrel 62.
  • the floating nut 76 of the running and setting tool which nut is connected thereto by interengaging longitudinal splines, is threaded into the casing hanger at 78 by rotating the drill pipe to the left.
  • the running and setting tool 63 to the left moves the setting nut upwardly, the longitudinal spacing of nut 66 and the number of turns required to move nut 66 up to the position shown are such that the floating nut 76 engages the casing hanger at 78 before the setting nut 66 reaches the shoulder as shown in FIG. 3.
  • Tool 63 is a running tool for the casing string and because of one advantage of applicants invention, this tool may also serve as a setting tool since an additional trip into the casing head with a setting tool to set packing means may be obviated. Thus, it has been found advantageous to design therunning tool 63 to perform the setting function, although the casing hanger may also be run and the packing means set with a separate tool.
  • the casing hanger with a casing string attached thereto and running and setting tool inserted therein, is lowered into the well through the blowout preventers (not shown) on the drill string until the dogs 80 are below the shoulder 82 of the casing head 61, as shown in FIG. 2.
  • the casing hanger 62 is then locked down into the casing head 61 since the spring loaded dogs 80 prevent the casing hanger mandrel 62 from moving upward past the shoulder 82 of the casing head.
  • the casing is positively locked down prior to cementing before packing oif the annular opening 81 between the casing hanger mandrel 62 and the casing head 61 with the packing rubber 94, so that cement returns may pass through the annular opening 81 and circumferentially spaced slots 83 without provision for an additional outlet or port collar below the casing hanger to provide for the expulsion of cement returns from the casing annulus.
  • the shoulder of the casing hanger mandrel which seats on internal shoulder 79 of the casing head, may be any type of interrupted shoulder.
  • the casing string is then cemented in the formation by pumping cement through the drill string (not shown) and through the running and setting tool 63 in the conventional manner.
  • Pump down plug 84 may thenbe run through the drill pipe with mud and into the position shown in the bottom of the setting tool of FIG. 3 so that the plug 84 engages the liner wiper plug 86, as shown in FIG. 3. thus releasing the liner wiper plug 86 having the pump down plug 84 lodged therein so that the plugs move down the casing to engage the landing collar (not shown)with which they act as a back pressure valve, and effectively pack off the casing after the cement is in place.
  • the purpose of the pump down plug is to separate the cement from the mud with which the cement is chased.
  • the packing element 94 is extruded between'the casing hanger mandrel 62 and the casing head 61 by first disengaging the fioating nut 76 from the casing hanger mandrel 62 by rotating the drill pipe (to which the running and setting tool 63 is threadably engaged) to the right. Further rotation of the drill pipe (running and setting tool 63) to the right after the floating nut 76 is released from the casing hanger, drives the setting nut 66 which engages splines 68 downwardly toward the lower shoulder 75 of the top sub.
  • extrude means that the packer or sealing element, e.g. packer 94, is mechanically compressed to form a fluid-tight seal between two members, e.g. casing head 61 and easing hanger mandrel 62. After extruding packer 94, the casing is hung and sealed in the casing head 61 and the casing hanger running and setting tool 63 may be withdrawn from the casing hanger on the An increase in mud pressure shears pin 88,
  • An addition-a1 casing may be hung in an identical manner within the casing hanger mandrel 62..
  • a tubing head as, for example, that shown in FIG. 1, may then be latched or fastened to the casing head and a tubing hung therein through the casing hanger mandrel 62 in any conventional manner,-such as that set forth in our copending application, Serial No. 310,203 filed September 20, 1963 for Tubing Head Apparatus and Method.
  • the casing hanger assembly shown in FIGS. 1-3 and described above requires rotation to set the packer which packs off between the casing hanger and the casing head in which it is landed.
  • the barge may become misaligned with the well bore and it is sometimes difficult to rotate the setting tool string from the.
  • FIGS. 4-7 The modification shown in FIGS. 4-7 is particularly useful in applications Where the above-mentioned difficulty may be present.
  • FIGS. 4-7 show generally a hydraulic setting means for the-packing element of a casing hanger which is set after the casing hanger has been locked in place in the casing head and after the casing has been cemented into the formation so that cement returns may be circulated through the annulus, as mentioned in conjunction with the description of FIGS. l-3.
  • the apparatus of FIGS. 4-7 also involves a hydraulically actuated locking means that holds the packing element set after setting pressure is released and a novel pressure equalizing means that prevents premature set of the packing element by pressure differentials involved in the cementing operation.
  • a casing head C is installed on the upper end of the casing string C which has been cemented into the formation.
  • Casing string C is run into the casing head C1 and cemented into the formation below casing string C and the annulus between casing string C and C.
  • Casing string C is carried in the hole on the running string D which is made up into the running and setting tool S which is attached to the casing hanger mandrelH.
  • the casing head C is a cylindrical member which may be provided at its lower end with a suitable thread or other suitable fastening means, for attaching to the casing C.
  • an upward facing shoulder suitable for landing and indexing within this member, the casing hanger mandrel H.
  • shoulder 110 is a downward facing shoulder 111 suitable for locking a hold downmeans 109 of the casing hanger mandrel which will hereinafter be described.
  • the upper part of'the casing head is provided with a conventional means (not shown) for attaching riser pipe.
  • the casing hanger mandrel H construction includes a cylindrical body 112 provided at its lower end with a thread 113 for attaching casing C Just above this thread is provided a hold down means as described above in conjunction with FIG. 2. Hold down or locking means.
  • the setting sleeve 119 is packed 01f by 0 rings 108 provided in an annular ring member 120 disposed between sleeve 119 and body member 112. This annular ring is secured to the mandrel ,H by a snap ring 121 which holds.
  • This ring is prevented from moving upwardly on the body 112 by snap ring 123.
  • a thread 117 or other means suitable for attaching annular ring member 124 is provided across the upper end of the body and annular ring member 124 in order to provide a stop for the running and setting tool.
  • This annular ring 124 also packs off the body with sleeve member 119.
  • the annular rings, 122 and 124, body 112 and sleeve 119 form two chambers, upper chamber 125 and the lower or pressure equalizing chamber 126.
  • Orifices 127 and 128 provided in the body 112 provide fluid communication between chambers 125 and 126 with the interior of the casing hanger mandrel H.
  • Abutting the lower end of annular ring 122 are segmented hold down slip members 129. These segmented slip members are tapered and rest against a mating slip bowl 130 provided in sleeve member 119.
  • the running and setting tool S is made up in the casing hanger mandrel H by means of a left hand acme thread 131 in the interior of the casing hanger mandrel and a traveling nut member 132 that slides on the running and setting tool body 105 upon splined lugs 133.
  • shoulder 135 of the running and setting tool stops against shoulder 134 of the casing hanger.
  • the upper end of the running and setting tool body is threaded at 106 for connection to the running and setting tool top connector 136.
  • the upper end of the top connector 136 has a box thread 105 for connection to the running string.
  • On the lower face of the top connector is provided a race groove 137.
  • Ball bearings 138 are provided between race groove 137 and the race groove 139 cut in the upper face of bearing member 140.
  • Bearing member 140 surrounds the running and setting tool body and is retained there by a shoulder on the running and setting tool body at 141.
  • seal member 142 Surrounding the running and setting tool body below the bearing member 140 is seal member 142.
  • This seal member is provided with 0 rings to pack off the ports 127 and 128 in the casing hanger mandrel and also ports 143 and 144 in the running and setting tool body 105 when the running and setting tool is made up in the casing hanger mandrel.
  • the seal member mounts on the running and setting tool body in limited longitudinal relationship thereto between shoulder 145 on the bearing member and the upper faces of spline members 133.
  • a swivel connection 146 is provided at the lower end of the running and setting tool body and the swivel connection carries a shear out collar 147 in order to mount a liner wiper plug 148 thereto.
  • This liner wiper plug is of the conventional type commonly used in oil fields for cementing purposes.
  • Mounted on the lower end of casing C is a conventional landing collar 149.
  • a shoe 104 is provided below the landing collar.
  • the apparatus is run into the hole as in FIG. 1 until the shoulder 114 of the casting hanger lands against shoulder 110 of the casing head C At this time the spring loaded hold down dogs 109 will latch against shoulder 111 of the casing hanger head preventing a withdrawal of the hanger from the hole. Circulation may now be established to Wash the well bore preparatory to cementing. After cementing pump down plug 150 is dropped and continued pumping pressure is applied behind the plug to force the cement to position. When plug 150 reaches the linear wiper plug 148 it will latch thereto in sealing relationship. Shoulder 170 prevents further downward movement of plug 150 and slips 172 prevent upward movement of plug 150.
  • the packer 116 is set by dropping a ball 102 into the running pipe.
  • the ball settles to its seal 152 provided in the running and setting tool body.
  • Pressure is now applied through the running pipe, to pressurize chamber 125 of the casing hanger through ports 143 of the running and setting tool body, 153 of seal member 140, and 127 of the casing hanger mandrel.
  • Pressure build up in chamber 125 forces the annular seal ring member 122 against slip segments 129.
  • the slip segments force the setting sleeve downward also forcing the header member 118 to set seal 116.
  • the assembly will now be in the position as shown in FIG. 6. After the pressures is released the seal is maintained set by the slip bowl in the sleeve being forced into the slip segments causing them to bite into the casing hanger mandrel in holding relationship.
  • the running pipe is rotated to the right causing the running and setting tool to rotate with it.
  • the traveling nut 132 is released from the casing hanger mandrel.
  • the running and setting tool may then be lifted up out of engagement with the casing hanger mandrel as shown in FIG. 7.
  • Seal member 142 moves longitudinally allowing the fluid above the ball to drain as the running pipe is pulled from the hole.
  • a casing hanger assembly for use with a casing head having a shoulder therein, comprising in combination:
  • (b) means defining an annular path between said mandrel and .said casing head, through which path fluids can pass when said mandrel is landed on said casing head shoulder, and
  • the apparatus of claim 1 including means associated with said mandrel for locking said mandrel against upward movement relative to said casting head when said mandrel is landed on said shoulder of said casing head.
  • a casing hanger assembly for use with a casing head having a shoulder therein, comprising in combination:
  • sealing means being so arranged and constructed as to extend said annular path past said sealing means before said sealing means are actuated to effect said seal.
  • a casing hanger assembly for use with a casing head having a shoulder therein, comprising incombination:
  • said packer being so arranged and constructed as to extend said annular path past said packer before said packer is extruded.
  • a casing hanger assembly for use with a casing head having a shoulder therein, comprising in combination:
  • sealing means and setting sleeve being so said arranged and constructed as to extend said annular path past said sealing means before said seal is effected.
  • fluid actuated means for driving said sleeve downwardly.
  • a casing hanger assembly for use with a casing head having a shoulder therein, comprising in combination:
  • Said mandrel and sealing means being so arranged an constructed as to provide an annular path in fluid communication with said slot, between said casing head and said sealing means for the passage of fluid returns before said seal is effected.
  • a casing hanger assembly for use with a casing head having a shoulder therein comprising in combination:
  • locking means movably associated with said mandrel for locking said mandrel against upward movement relative to said casing head when said mandrel is landed on said shoulder of said casing head, said locking means being of a configuration to permit fluid returns to pass through the annulus between said mandrel and said head past said locking means
  • a casing hanger assembly for use with a casing head having'a shoulder therein, comprising in combination:
  • locking means movably associated with said mandrel for locking said mandrel against upward movement relative to said casing head when said mandrel is landed on said shoulder of said casing head, said locking means being of a configuration to permit fluid returns to pass through the annulus between said mandrel and said head past said locking means
  • the apparatus of claim 17 including means for preventing upward movement of said sleeve relative to said mandrel.
  • the apparatus of claim 17 including an equalizing chamber defined between said sleeve and said mandrel by the surface of said first annular ring opposite said first chamber and a third annular ring spaced apart from said first annular ring and means for subjecting said equalizing chamber to the pressure to which said first chamber is subjected except when said packer is being set.
  • said pressure applying means include a setting tool releasa'bly connected to said mandrel, and including (a) a sealing seat in said setting tool between said chambers and adapted to receive a setting ball to seal the bore of said setting tool between said chambers, and
  • a casing hanger assembly for use with a casing head having a shoulder therein with an upwardly facing surface and a downwardly facing surface, comprising in combination:
  • (c) means defining an annular path between said mandrel and said casing head through which path fluids can pass when said mandrel is landed in said casing head, and
  • (c) means below said sealing seat for subjecting said equalizing chamber to the pressure to which said first chamber is subjected when said packer is not being set.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US432160A 1965-02-12 1965-02-12 Well casing hanger and method for hanging same Expired - Lifetime US3279539A (en)

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Application Number Priority Date Filing Date Title
DENDAT1302138D DE1302138B (de) 1965-02-12
US432160A US3279539A (en) 1965-02-12 1965-02-12 Well casing hanger and method for hanging same
NL666601791A NL153635B (nl) 1965-02-12 1966-02-11 Samenstel voor het plaatsen van een verbuizing binnen een verbuizingskop in een boorput.
GB6342/66A GB1142803A (en) 1965-02-12 1966-02-14 Well casing hanger and method for hanging same

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DE (1) DE1302138B (de)
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468559A (en) * 1965-10-23 1969-09-23 Ventura Tool Co Hydraulically actuated casing hanger
US3468558A (en) * 1965-10-23 1969-09-23 Ventura Tool Co Casing hanger apparatus
US3489436A (en) * 1965-10-23 1970-01-13 Ventura Tool Co Apparatus for hanging well bore casing
US3489215A (en) * 1968-11-26 1970-01-13 Regan Forge & Eng Co Circulating casing hanger and running tool apparatus
US3492026A (en) * 1965-10-23 1970-01-27 Ventura Tool Co Well bore casing hanger apparatus
US3528686A (en) * 1968-06-24 1970-09-15 Vetco Offshore Ind Inc Rotatable casing hanger apparatus
FR2090070A1 (de) * 1970-05-15 1972-01-14 Vetco Offshore Ind Inc
US3638725A (en) * 1970-05-15 1972-02-01 Vetco Offshore Ind Inc Direct drive casing hanger apparatus
US3809158A (en) * 1972-07-27 1974-05-07 Rockwell International Corp Well completion apparatus and method
US3871449A (en) * 1974-03-04 1975-03-18 Vetco Offshore Ind Inc Casing hanger and packoff apparatus
US3910349A (en) * 1974-11-06 1975-10-07 Brown Oil Tools Apparatus and method for cementing well liners
US3920075A (en) * 1974-02-08 1975-11-18 Texas Iron Works Method for positioning a liner on a tubular member in a well bore with a retrievable pack off bushing therebetween
US4022281A (en) * 1975-04-18 1977-05-10 The British Petroleum Company Limited Method and apparatus for orienting equipment in a well
US4597448A (en) * 1982-02-16 1986-07-01 Smith International, Inc. Subsea wellhead system
FR2603652A1 (fr) * 1985-05-02 1988-03-11 Dril Quip Inc Equipement de tete de puits
US5080174A (en) * 1991-01-14 1992-01-14 Cooper Industries, Inc. Hydraulic packoff and casing hanger installation tool
US8881824B2 (en) * 2012-10-26 2014-11-11 Halliburton Energy Services, Inc. Mechanically actuated device positioned below mechanically actuated release assembly utilizing J-slot device
US20160090802A1 (en) * 2014-09-26 2016-03-31 Cameron International Corporation Load shoulder system
WO2020002976A1 (en) * 2018-06-28 2020-01-02 Saudi Arabian Oil Company Liner hanger system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496162A (en) * 1982-08-23 1985-01-29 Cameron Iron Works, Inc. Well sealing assembly having resilient seal ring with metal end caps

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104808A (en) * 1936-04-27 1938-01-11 Hughes Tool Co Flow head
US3033290A (en) * 1959-10-01 1962-05-08 Cicero C Brown Screw-set non-retrievable packer
US3050117A (en) * 1959-10-23 1962-08-21 Shell Oil Co Method and apparatus for cementing underwater wells
US3068027A (en) * 1958-10-13 1962-12-11 Mcevoy Co Supporting apparatus
US3158201A (en) * 1961-10-31 1964-11-24 Alad Oil Tool Inc Liner hanger and setting tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104808A (en) * 1936-04-27 1938-01-11 Hughes Tool Co Flow head
US3068027A (en) * 1958-10-13 1962-12-11 Mcevoy Co Supporting apparatus
US3033290A (en) * 1959-10-01 1962-05-08 Cicero C Brown Screw-set non-retrievable packer
US3050117A (en) * 1959-10-23 1962-08-21 Shell Oil Co Method and apparatus for cementing underwater wells
US3158201A (en) * 1961-10-31 1964-11-24 Alad Oil Tool Inc Liner hanger and setting tool

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468559A (en) * 1965-10-23 1969-09-23 Ventura Tool Co Hydraulically actuated casing hanger
US3468558A (en) * 1965-10-23 1969-09-23 Ventura Tool Co Casing hanger apparatus
US3489436A (en) * 1965-10-23 1970-01-13 Ventura Tool Co Apparatus for hanging well bore casing
US3492026A (en) * 1965-10-23 1970-01-27 Ventura Tool Co Well bore casing hanger apparatus
US3528686A (en) * 1968-06-24 1970-09-15 Vetco Offshore Ind Inc Rotatable casing hanger apparatus
US3489215A (en) * 1968-11-26 1970-01-13 Regan Forge & Eng Co Circulating casing hanger and running tool apparatus
FR2090070A1 (de) * 1970-05-15 1972-01-14 Vetco Offshore Ind Inc
US3638725A (en) * 1970-05-15 1972-02-01 Vetco Offshore Ind Inc Direct drive casing hanger apparatus
US3809158A (en) * 1972-07-27 1974-05-07 Rockwell International Corp Well completion apparatus and method
US3920075A (en) * 1974-02-08 1975-11-18 Texas Iron Works Method for positioning a liner on a tubular member in a well bore with a retrievable pack off bushing therebetween
US3871449A (en) * 1974-03-04 1975-03-18 Vetco Offshore Ind Inc Casing hanger and packoff apparatus
US3910349A (en) * 1974-11-06 1975-10-07 Brown Oil Tools Apparatus and method for cementing well liners
US4022281A (en) * 1975-04-18 1977-05-10 The British Petroleum Company Limited Method and apparatus for orienting equipment in a well
US4597448A (en) * 1982-02-16 1986-07-01 Smith International, Inc. Subsea wellhead system
US4615544A (en) * 1982-02-16 1986-10-07 Smith International, Inc. Subsea wellhead system
FR2603652A1 (fr) * 1985-05-02 1988-03-11 Dril Quip Inc Equipement de tete de puits
US5080174A (en) * 1991-01-14 1992-01-14 Cooper Industries, Inc. Hydraulic packoff and casing hanger installation tool
US8881824B2 (en) * 2012-10-26 2014-11-11 Halliburton Energy Services, Inc. Mechanically actuated device positioned below mechanically actuated release assembly utilizing J-slot device
US9828832B2 (en) 2012-10-26 2017-11-28 Halliburton Energy Services, Inc. Mechanically actuated device positioned below mechanically actuated release assembly utilizing J-slot device
US20160090802A1 (en) * 2014-09-26 2016-03-31 Cameron International Corporation Load shoulder system
US10077620B2 (en) * 2014-09-26 2018-09-18 Cameron International Corporation Load shoulder system
US10927626B2 (en) 2014-09-26 2021-02-23 Cameron International Corporation Load shoulder system
WO2020002976A1 (en) * 2018-06-28 2020-01-02 Saudi Arabian Oil Company Liner hanger system
US10837245B2 (en) 2018-06-28 2020-11-17 Saudi Arabian Oil Company Liner hanger system
US11371304B2 (en) 2018-06-28 2022-06-28 Saudi Arabian Oil Company Liner hanger system

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Publication number Publication date
NL6601791A (de) 1966-08-15
GB1142803A (en) 1969-02-12
DE1302138B (de) 1970-03-12
NL153635B (nl) 1977-06-15

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