US3516492A - Underwater wellhead connector - Google Patents

Underwater wellhead connector Download PDF

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Publication number
US3516492A
US3516492A US731381A US3516492DA US3516492A US 3516492 A US3516492 A US 3516492A US 731381 A US731381 A US 731381A US 3516492D A US3516492D A US 3516492DA US 3516492 A US3516492 A US 3516492A
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United States
Prior art keywords
wellhead
connector
vessel
well
assembly
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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
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US731381A
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English (en)
Inventor
William H Petersen
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Shell USA Inc
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Shell Oil Co
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Publication date
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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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
    • E21B33/038—Connectors used on well heads, e.g. for connecting blow-out preventer and riser

Definitions

  • the invention relates to a wellhead connector which may be used to establish operative communication between a vessel floating on the surface of a body of water and a wellhead assembly or production control unit of an underwater well whereby maintenance or other operations with respect to the well and/or wellhead assembly may be carried out from the vessel.
  • maintenance or other undersea operations with respect to a producing well are usually initiated by establishing guide means, such as guidelines, between the vessel and the well site.
  • guide means such as guidelines
  • a suitable wellhead connector device is then normally lowered by means of a pipe string along the guide means to the wellhead assembly whereupon the desired operations are performed from the vessel.
  • Some operations may be performed with the wellhead assembly remaining in place but occasionally it may be necessary to disconnect the wellhead assembly from the underwater wellhead and production flow lines and pull it up to the vessel by means of the pipe string along the guide means.
  • a further object of the present invention is to provide a wellhead connector incorporating wellhead assembly locating and positioning means for assisting the operator in locating the wellhead assembly and operatively positioning the connector with respect to the wellhead assembly.
  • a wellhead connector lowerable from a floating vessel which incorporates sonar and TV equipment for assisting in the positioning thereof on an underwater wellhead assembly.
  • an inner conduit assembly incorporated in the wellhead connector is moved by prime mover means into operative association with production tubing extending into the well. Since the inner conduit assembly is also in continuous fluid communication with one or more tubing strings extending to the vessel, desired operations may be carried out from the vessel with respect to the well and/ or wellhead assembly.
  • FIG. 1 is a diagrammatic view illustrating a barge or vessel floating on the surface of a body of water over an underwater wellhead assembly, the vessel having depending therefrom the wellhead connector according to the present invention
  • FIG. 2 is a longitudinal view taken in partial crosssection illustrating the wellhead connector according to the present invention in operative engagement with an underwater wellhead assembly;
  • FIG. 3 is an enlarged, partial cross-sectional view illustrating a portion of the wellhead connector according to the present invention in association with a cooperating portion of an underwater wellhead assembly.
  • a drilling vessel or barge 11 of any suitable floatable type is illustrated as floating on the surface of a body of water 12 and substantially fixedly positioned over a preselected location by suitable barge positioning means or by being anchored to the ocean floor 13 by suitable anchors (not shown) connected to anchor lines 14 and 15.
  • Equipment of this type may be used when carrying on operations in water depths varying from about to 1500 feet or more.
  • the drilling barge is equipped with a suitable derrick 16 as well as other auxiliary equipment needed during well work-over or maintenance operations.
  • the derrick 16 is positioned over a drilling slot 17 which extends vertically through the barge in a conventional manner.
  • the slot of vessel 11 may be either centrally located or extend in from one edge thereof. However, operations may be carried out over the side of the barge or vessel without the use of a slot.
  • FIG. 1 An underwater wellhead structure is illustrated in FIG. 1 as comprising a base member 18 which is positioned on the ocean floor 13 and is fixedly secured to a large diameter well casing 19 which extends down into a well, which has been previously drilled, and is preferably cemented therein.
  • One or more strings of production tubing such as tubing strings 20 and 21 are suspended within the well casing and extend into the well in the usual manner.
  • the wellhead structure may include two or more vertical guide columns 22 and 23 adapted to cooperate with guide lines extending downwardly from vessel 11 in the manner which is more clearly set forth in copending US. patent application Ser. No. 731,382, filed May 23, 1968.
  • the production control unit or wellhead assembly is in fluid communication with the production tubing and comprises the necessary piping, valves, chokes, and other equipment normally connected together and mounted on the top of a well, and known as a Christmas tree, together with the necessary hydraulic or electrical systems, including pumps, reservoirs, motors, etc., to operate the valves at the head of the well from a remote location.
  • a typical example of a suitable underwater production control unit or wellhead assembly for use at an offshore well location, and its manner of operation, is shown and described in U.S. Pat. No. 3,064,- 735, issued Nov. 20, 1962, to R. J. Bauer et al.
  • the wellhead assembly utilized in conjunction with the present invention will be similar to that described in the above patent, although it is of course obvious that the wellhead connector according to the present invention could be used with other suitable wellhead assembly designs.
  • Wellhead 25 includes one or more fluid flow handling conduits, such as conduits 26 and 27, and an upstanding wellhead entry conduit 28.
  • Fluid flow handling conduits 26 and 27 communicate with production tubing strings 20 and 21, respectively, and are smoothly curved in an are which would permit objects, such as through-the-flowline tools to be circulated therethrough into the well.
  • connector 30 may have operatively associated therewith guideline carrying means 31 and 32 and guidelines 33 and 34 depending from Vessel 11. It is to be understood that upon the eventual lowering of guideline carrying means 31 and 32 into communication with guide columns 22 and 23 the guidelines would be connected thereto in some suitable manner. However, columns 22 and 23, guide line carrying means 31 and 32, and guidelines 33 and 34, form no part of the present invention and are shown here for purposes of illustration only.
  • the wellhead connector 30 could be suitably used without a guideline arrangement if desired.
  • wellhead connector 30 includes a cylindrical body member 35 defining a throughbore 36 into which extends tubing runs 37 and 38.
  • Tubing runs 37 and 38 extend upwardly within pipe string 29 to vessel 11.
  • the tubing runs 37 and 38 are each comprised of individual tubing sections of substantially the same length as the sections of pipe comprising pipe string 29 and are integrally attached thereto by suitable internal frame means to form integral units.
  • An arrangement of this type is disclosed in copending US. application No. 690,996, filed Dec. 15, 1967.
  • the tubing runs may be independently disposedwithin pipe string 29 if so desired.
  • a framework 39 is attached to the lower end of body member 35 and extends outwardly therefrom in the manner shown.
  • the framework 39 carries wellhead assembly locating means and positioning means for assisting the operator on vessel 11 in locating wellhead assembly 25 and operatively positioning connector 30 thereon. These operations will be explained in more detail below. It should be noted at this point, however, that the locating and positioning means illustrated include a hydraulically A, actuated, extensible sonar unit 40 and a television camera 41 both of which may be utilized to monitor operations at the well site.
  • a lamp unit 42 is affixed to television camera 41 to provide sufficient illumination during the course of the underwater operations.
  • the camera 41 may be fixedly mounted but it is preferred that it be movably mounted for positioning at the will of the operator to provide greater flexibility with respect to what may be observed during the course of operations. Since television cameras and sonar units used for the purpose described are familitar to those skilled in the art and are set forth in patent and other literature, a detailed description of the operation thereof is not believed necessary. Also attached to the lower end of body portion 34 is a downwardly extending cone-shaped element 43 having a cutout portion 44 which is positioned to permit the camera to view operations taking place within the confines of the cone-shaped element 43. Cone-shaped element 43 also assists in the positioning of connector 30 onto the well head assembly as described below.
  • Body member 35 includes an inner cylindrically-shaped body member portion 45 which is mounted for downwardly extensible axial movement with respect to the rest of the body member.
  • the body member portion 45 is normally biased by any suitable means, such as spring means (not shown), into a retracted first position.
  • a flange member 46 is an integral part of body member portion 45 and a resilient O-ring member 47 is accom modated thereby which sealingly engages inner wall 48 of body member 35 thereby defining chamber 49 which is the annular space between body member portion 45 and the remainder of body member 35.
  • a plurality of accumulators 50 are fixedly disposed about body member 35 and are attached thereto by any desired means.
  • Conduits 51 provide fluid communication between accumulators 50 and chamber 49 with suitable valve means (not shown) being disposed within conduits 51 to establish or break the fluid communication between the accumulators 50 and chamber 49 as desired.
  • suitable valve means (not shown) being disposed within conduits 51 to establish or break the fluid communication between the accumulators 50 and chamber 49 as desired.
  • the actuation of these valves would be accomplished remotely from vessel 11 in the well-known manner.
  • cable 52 including a plurality of electrical and/ or hydraulic conduits 53 is shown for conducting energy pulses from vessel 11 to the various valves, latches, etc. employed in wellhead connector'30.
  • Valves referred to herein may be either electrically, pneumati cally or hydraulically actuated as desired.
  • wellhead connector 30 is attached to pipe string 29 by any known coupling means and lowered from the vessel by adding additional sections of pipe to the string in the customary manner. This operation continues until it is determined that sufficient pipe sections have been added to position the connector at a distance from the ocean floor 13 somewhat greater than the height of wellhead assembly 25.
  • the sonar unit 40 and the television camera 41 (as well as light 42) are actuated and monitored from vessel 11.
  • the pipe string 29 and wellhead connector 30 are then manipulated from the vessel to position them in axial alignment with wellhead entry conduit 28. Additional pipe sections are then connected to the top of the pipe string 29 to lower connector 30 into engagement with wellhead entry conduit 28.
  • the cone-shaped element 43 will act to axially align connector 30 with respect to conduit 28 as it is lowered thereon and television camera 41 with its unobstructed view through cut-out portion 44 will permit the operator on vessel 11 to view the operation.
  • the lowering of connector 30 over wellhead entry conduit 28 continues until the top of conduit 28 firmly seats against the bottom of stop means 54 which comprises a shoulder section of the body member wall and extends into chamber 49 as shown in FIG. 2.
  • annular groove 55 is formed about the periphery of wellhead entry conduit 28.
  • hydraulically operated latch members 56 and 57 which are associated with suitable housings attached to body member 35, are actuated and position themselves in groove 55 in the manner shown.
  • suitable conventional hydraulic lines and hydraulic pressure source means are provided to actuate the latch members, but these elements have not been shown for purposes of clarity.
  • the latch members 56 and 57 may be actuated either automatically upon the seating of the conduit 28 against stop means 54 or by an operator on vessel 11.
  • Latch locking means 8 and 59 also hydraulically operated, are actuated after latch members 56 and 57 are in operative association with groove 55.
  • Latch locking means 58 and 59 are actuated after latch members 56 and 57 are in operative association with groove 55.
  • Latch locking means 58 and 59 serve to lock the latch members 56 and 57 into engagement with groove 55 in the manner shown in FIG. 2.
  • the complete hydraulic system for operating latch locking means 58 and 59 has not been shown.
  • the latch locking means may be actuated at the will of an operator on vessel 11 or automatically upon the positioning of latch members 56 and 57 in groove 55.
  • body member portion 45 is in its retracted first position. It is also assumed that wellhead connector 30 has been properly rotatably aligned with respect to entry conduit 28 to the position illustrated. This may be done either by manipulating pipe string 29 and connector 30 from vessel 11 with reference to the image transmitted by television camera 41 or by providing suitable cooperating aligning means on the connector and entry conduit. Aligning means of this type is disclosed in copending US. application Ser. No. 731,382 filed May 23, 196 8. Attached to body member portion 45 by any suitable means, such as by welding, is an inner conduit assembly means comprising plate means 60 and tubing runs 37 and 38.
  • the assembly means further includes locking plate means 61 which is secured to plate means 60 by means of screws 62 and 63.
  • the tubing runs 37 and 38 extend through axially aligned apertures in plate means 60 and locking plate means 61 and are fixedly secured in the position illustrated by any suitable means.
  • the tubing runs may be welded onto locking plate means 61 or may be press fit into the associated apertures of locking plate means 61.
  • Other pipe members for effecting various well operations, such as tubing member 64 may also be disposed in body member portion 45 and extend through plate means 60 and locking plate means 61.
  • the end of tubing member 64 which has not been illustrated would be operatively connected to a suitable power source such as one of the conduits 53.
  • Tubing runs 37 and 38 and tubing member 64 preferably incorporate recessed ends 65, 66 and 67, respectively, with sealing elements disposed thereon in the manner shown.
  • electrical cables to effect various operations on the wellhead could also be disposed in body member portion 45 and extend to plate means 60. Any such electrical cables would be equipped with termination fittings of any suitable design and attached to plate 61. Since electrical cables and connectors of any suitable type well known in the art may be used in this purpose it is not deemed necessary to describe such an arrangement further.
  • a support plate 68 is disposed in wellhead entry conduit 28 as is also shown in FIG. 3.
  • Fixedly positioned in support plate 68 by means of any known expedient are connector elements 69 and 70 and tubing member coupling element 71 all of which comprise cylindrical pipes.
  • the connector elements 69 and 70 extend downwardly into the wellhead assembly and are in axial alignment and fluid communication with production tubing strings 20 and 21.
  • electrical termination fittings and electrical cable means are operatively associated with the plate means 61 mating electrical fittings or plugs of any suitable design would be provided on support plate 68 with cooperating cable means (not shown) extending into the assembly.
  • valve means interrupts the fluid communication between tubing strings 20 and 21 and their respective connector elements 69 and 70.
  • Tubing member coupling element 71 is in operative communication with one or more valve elements, latches, etc. (not shown) within the assembly or the well itself and which are elfective to shut down the well or perform other desired operations.
  • valve elements, latches, etc. not shown
  • the above-described electrical cables and connectors which may be employed could be used for this purpose. Since the precise nature of the operations to be performed vary according to the design of the particular wellhead assembly employed and the exigencies of the desired operation, no attempt has been made to describe this feature in greater detail.
  • the connector according to the present invention could, of course be utilized with various numbers and sizes of pipes and/ or electrical cables as desired.
  • valve means (not shown) in conduits 51 are opened thereby building up hydraulic pressure in chamber 49 by flowing hydraulic fluid from accumulators 50.
  • accumulators 50 Rather than using the disclosed accumulators to provide the source of hydraulic fluid a direct operating hydraulic circuit could be established between one of the hydraulic conduits 53 and chamber 49 with hydraulic fluid pressure being furnished directly from vessel 11.
  • flange member 46 By acting upon flange member 46 the hydraulic pressure within chamber 49 serves to force body member portion 45 and pipe string 29 in a downward direction so that all elements of wellhead connector 30 including tubing runs 37 and 38 and tubing member 64 are positioned as shown in FIG. 2.
  • Body member portion 45 is now in its extended second position.
  • a hydraulically operated latch 72 is actuated to cooperate with a flange member 73 which is fixedly disposed about the periphery of body member portion 45.
  • Latch 72 serves to lock tubing runs 37 and 38 and tubing member 64 into fluid-tight engagement with their respective cooperating connector elements 69 and 70 and tubing member coupling element 71.
  • any mating electrical connectors employed on plate means '61 and support plate 68 would be brought into engagement.
  • a body member having a vertical throughbore and being positionable over said upstanding member by said pipe string;
  • latch means carried by at least one of said members for effecting attachment therebetween;
  • inner conduit assembly means carried by said body member portion for movement from a first position to a second position
  • prime mover means carried by said body member and operatively engaging said body member portion for moving the inner conduit assembly means from said first position to said second position;
  • said inner conduit assembly means comprising substantially rigid tube means fixedly positioned in plate means mounted at one end of said body member portion, said plate means having aperture means therein through which the tube means protrudes.
  • a framework extends outwardly from said body member, said framework carrying wellhead assembly locating means and positioning means for assisting the operator in locating the wellhead assembly and operatively posititoning the connector with respect to the wellhead assembly.
  • prime mover means comprises a hydraulically actuated piston operatively associated with accumulator means mounted on said pipe string.

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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)
  • Earth Drilling (AREA)
  • Geophysics And Detection Of Objects (AREA)
US731381A 1968-05-23 1968-05-23 Underwater wellhead connector Expired - Lifetime US3516492A (en)

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US73138168A 1968-05-23 1968-05-23

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US (1) US3516492A (enrdf_load_stackoverflow)
DE (1) DE1925959A1 (enrdf_load_stackoverflow)
FR (1) FR2009181A1 (enrdf_load_stackoverflow)
GB (1) GB1262754A (enrdf_load_stackoverflow)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638732A (en) * 1970-01-12 1972-02-01 Vetco Offshore Ind Inc Underwater wellhead electric connection apparatus for submerged electric motor driven well pumps and method of installation
US3770053A (en) * 1971-12-14 1973-11-06 Fmc Corp Ocean bottom well tubing valve installation
US3788396A (en) * 1971-03-10 1974-01-29 Shell Oil Co Well re-entry tool with bumperhead
US3827486A (en) * 1972-03-17 1974-08-06 Brown Oil Tools Well reentry system
US3834460A (en) * 1971-12-27 1974-09-10 Subsea Equipment Ass Ltd Well-head assembly
US3840071A (en) * 1972-06-26 1974-10-08 Stewart & Stevenson Inc Jim Underwater connector for wellheads
US3899894A (en) * 1972-04-10 1975-08-19 Subsea Equipment Ass Ltd Apparatus for connection between submarine conduits
US4111463A (en) * 1977-06-07 1978-09-05 The United States Of America As Represented By The Secretary Of The Air Force Separable coupling for plural pressure lines
US4234043A (en) * 1977-10-17 1980-11-18 Baker International Corporation Removable subsea test valve system for deep water
US4260289A (en) * 1978-06-21 1981-04-07 Societe Nationale Elf Aquitaine (Production) Connection-disconnection device between tubing and underwater wellhead for use with articulated production installations
FR2505397A1 (fr) * 1981-05-06 1982-11-12 Elf Aquitaine Connecteur deconnectable pour dispositif d'injection
US4600054A (en) * 1984-03-30 1986-07-15 Equipment Renewal Company Tubing hanger assembly
US5195589A (en) * 1990-10-12 1993-03-23 Petroleo Brasileiro S.A. Tool for simultaneous vertical connections
US5390966A (en) * 1993-10-22 1995-02-21 Mobil Oil Corporation Single connector for shunt conduits on well tool
WO2000009919A1 (en) * 1998-08-13 2000-02-24 Aci Medical Fluidic connector
US20040159438A1 (en) * 2003-01-27 2004-08-19 Reimert Larry E. Control pod latchdown mechanism
US20040239108A1 (en) * 2003-04-02 2004-12-02 Chart Industries Inc. Fluid piping system and pipe spools suitable for sub sea use
USRE41173E1 (en) 2002-12-03 2010-03-30 Vetco Gray Controls Limited System for use in controlling a hydrocarbon production well
US20120000664A1 (en) * 2009-01-15 2012-01-05 Weatherford/Lamb, Inc. Acoustically Controlled Subsea Latching and Sealing System and Method for an Oilfield Device
US10024154B2 (en) 2004-11-23 2018-07-17 Weatherford Technology Holdings, Llc Latch position indicator system and method
US10041335B2 (en) 2008-03-07 2018-08-07 Weatherford Technology Holdings, Llc Switching device for, and a method of switching, a downhole tool
CN111980618A (zh) * 2020-09-23 2020-11-24 中油国家油气钻井装备工程技术研究中心有限公司 一种具有紧急机械解锁功能的井口连接器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2038906B (en) * 1978-12-13 1982-11-10 Vetco Inc Wellhead connection apparatus
FR2519688A1 (fr) * 1982-01-08 1983-07-18 Elf Aquitaine Systeme d'etancheite pour puits de forage dans lequel circule un fluide chaud
CN115613992B (zh) * 2022-12-14 2023-02-24 中海油能源发展股份有限公司采油服务分公司 一种水下干式采油仓操作接口密封与连接装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052299A (en) * 1959-08-25 1962-09-04 Shell Oil Co Underwater wellhead with remotelydetachable flow line
US3071188A (en) * 1958-10-29 1963-01-01 Otis Eng Co Remotely controlled latch for well tools
US3217805A (en) * 1963-05-16 1965-11-16 Pan American Petroleum Corp Marine well completion apparatus
US3265130A (en) * 1962-05-23 1966-08-09 Shell Oil Co Method and apparatus for drilling underwater wells
US3301322A (en) * 1964-01-13 1967-01-31 Exxon Production Research Co Submerged well apparatus
US3332484A (en) * 1963-11-29 1967-07-25 Regan Forge & Eng Co Subsea well control tube methods and apparatus
US3339632A (en) * 1964-01-21 1967-09-05 Hydril Co Underwater connector
US3419071A (en) * 1967-06-21 1968-12-31 Cameron Iron Works Inc Underwater wellhead apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071188A (en) * 1958-10-29 1963-01-01 Otis Eng Co Remotely controlled latch for well tools
US3052299A (en) * 1959-08-25 1962-09-04 Shell Oil Co Underwater wellhead with remotelydetachable flow line
US3265130A (en) * 1962-05-23 1966-08-09 Shell Oil Co Method and apparatus for drilling underwater wells
US3217805A (en) * 1963-05-16 1965-11-16 Pan American Petroleum Corp Marine well completion apparatus
US3332484A (en) * 1963-11-29 1967-07-25 Regan Forge & Eng Co Subsea well control tube methods and apparatus
US3301322A (en) * 1964-01-13 1967-01-31 Exxon Production Research Co Submerged well apparatus
US3339632A (en) * 1964-01-21 1967-09-05 Hydril Co Underwater connector
US3419071A (en) * 1967-06-21 1968-12-31 Cameron Iron Works Inc Underwater wellhead apparatus

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638732A (en) * 1970-01-12 1972-02-01 Vetco Offshore Ind Inc Underwater wellhead electric connection apparatus for submerged electric motor driven well pumps and method of installation
US3788396A (en) * 1971-03-10 1974-01-29 Shell Oil Co Well re-entry tool with bumperhead
US3770053A (en) * 1971-12-14 1973-11-06 Fmc Corp Ocean bottom well tubing valve installation
US3834460A (en) * 1971-12-27 1974-09-10 Subsea Equipment Ass Ltd Well-head assembly
US3827486A (en) * 1972-03-17 1974-08-06 Brown Oil Tools Well reentry system
US3899894A (en) * 1972-04-10 1975-08-19 Subsea Equipment Ass Ltd Apparatus for connection between submarine conduits
US3840071A (en) * 1972-06-26 1974-10-08 Stewart & Stevenson Inc Jim Underwater connector for wellheads
US4111463A (en) * 1977-06-07 1978-09-05 The United States Of America As Represented By The Secretary Of The Air Force Separable coupling for plural pressure lines
US4234043A (en) * 1977-10-17 1980-11-18 Baker International Corporation Removable subsea test valve system for deep water
US4260289A (en) * 1978-06-21 1981-04-07 Societe Nationale Elf Aquitaine (Production) Connection-disconnection device between tubing and underwater wellhead for use with articulated production installations
FR2505397A1 (fr) * 1981-05-06 1982-11-12 Elf Aquitaine Connecteur deconnectable pour dispositif d'injection
US4600054A (en) * 1984-03-30 1986-07-15 Equipment Renewal Company Tubing hanger assembly
US5195589A (en) * 1990-10-12 1993-03-23 Petroleo Brasileiro S.A. Tool for simultaneous vertical connections
WO1995011404A1 (en) * 1993-10-22 1995-04-27 Mobil Oil Corporation Well tool
US5390966A (en) * 1993-10-22 1995-02-21 Mobil Oil Corporation Single connector for shunt conduits on well tool
WO2000009919A1 (en) * 1998-08-13 2000-02-24 Aci Medical Fluidic connector
US6062244A (en) * 1998-08-13 2000-05-16 Aci Medical Fluidic connector
USRE41173E1 (en) 2002-12-03 2010-03-30 Vetco Gray Controls Limited System for use in controlling a hydrocarbon production well
US20040159438A1 (en) * 2003-01-27 2004-08-19 Reimert Larry E. Control pod latchdown mechanism
US6907932B2 (en) * 2003-01-27 2005-06-21 Drill-Quip, Inc. Control pod latchdown mechanism
US7137651B2 (en) * 2003-04-02 2006-11-21 Chart Industries, Inc. Fluid piping systems and pipe spools suitable for sub sea use
US20040239108A1 (en) * 2003-04-02 2004-12-02 Chart Industries Inc. Fluid piping system and pipe spools suitable for sub sea use
US10024154B2 (en) 2004-11-23 2018-07-17 Weatherford Technology Holdings, Llc Latch position indicator system and method
US10041335B2 (en) 2008-03-07 2018-08-07 Weatherford Technology Holdings, Llc Switching device for, and a method of switching, a downhole tool
US20120000664A1 (en) * 2009-01-15 2012-01-05 Weatherford/Lamb, Inc. Acoustically Controlled Subsea Latching and Sealing System and Method for an Oilfield Device
US9359853B2 (en) * 2009-01-15 2016-06-07 Weatherford Technology Holdings, Llc Acoustically controlled subsea latching and sealing system and method for an oilfield device
AU2011317657B2 (en) * 2010-10-18 2016-11-03 Weatherford Technology Holdings, Llc Latching apparatus and method
CN111980618A (zh) * 2020-09-23 2020-11-24 中油国家油气钻井装备工程技术研究中心有限公司 一种具有紧急机械解锁功能的井口连接器
CN111980618B (zh) * 2020-09-23 2022-06-10 中油国家油气钻井装备工程技术研究中心有限公司 一种具有紧急机械解锁功能的井口连接器

Also Published As

Publication number Publication date
GB1262754A (en) 1972-02-09
DE1925959A1 (de) 1969-12-04
FR2009181A1 (enrdf_load_stackoverflow) 1970-01-30

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