EP0520107A1 - Outil de pose pour suspension de cuvelage - Google Patents

Outil de pose pour suspension de cuvelage Download PDF

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Publication number
EP0520107A1
EP0520107A1 EP91305899A EP91305899A EP0520107A1 EP 0520107 A1 EP0520107 A1 EP 0520107A1 EP 91305899 A EP91305899 A EP 91305899A EP 91305899 A EP91305899 A EP 91305899A EP 0520107 A1 EP0520107 A1 EP 0520107A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
running tool
tool according
ports
seals
Prior art date
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.)
Withdrawn
Application number
EP91305899A
Other languages
German (de)
English (en)
Inventor
Rodney C/O Cameron Iron Works Limited Kellett
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.)
Cooper Industries LLC
Original Assignee
Cooper Industries LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cooper Industries LLC filed Critical Cooper Industries LLC
Priority to EP91305899A priority Critical patent/EP0520107A1/fr
Publication of EP0520107A1 publication Critical patent/EP0520107A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/12—Valve arrangements for boreholes or wells in wells operated by movement of casings or tubings

Definitions

  • This invention relates to running tools which are used to locate items such as casing hangers in drilling wells.
  • a running tool which is used to lower a casing hanger into a drilling well usually comprises a generally tubular body to which the casing hanger can be attached.
  • the body usually has a thread which is engageable with a thread on the casing so that the two items can be coupled together by relative rotation.
  • the present invention is concerned with a running tool which is designed to alleviate this type of problem.
  • a running tool which comprises a generally tubular body, a first sleeve carried within the body for axial movement between positions in which it can open or close a port or ports in the body, and a second sleeve operatively coupled to the first sleeve such that rotation of the second sleeve causes the first sleeve to undergo said axial movement.
  • the second sleeve may be rotatable by means of a tool lowered into the well equipment.
  • the second sleeve may threadably engage the first sleeve.
  • the first sleeve may have external seals which seal against the inner wall of the body and isolate said ports in the closed position of the sleeve.
  • the first sleeve may be mounted such that it cannot undergo any significant rotational movement.
  • the body may carry one or more pins which engage in slots formed in the first sleeve to resist rotation of the first sleeve.
  • the body of the running tool may have external threads for engaging corresponding threads on a casing hanger.
  • a running tool has a generally tubular body shown at (10).
  • the body (10) has an upper tubular part (11) of relatively narrow wall thickness which extends axially downwardly to an integrally formed part (12) of greater wall thickness.
  • the part (12) is formed with an internal shoulder (14) and a plurality of angularly spaced through ports (15) which are disposed below the shoulder (14).
  • the outer periphery of the running tool body has two circumferential grooves in which are located extension seals (16).
  • the body part (12) extends axially downwardly to a lower part (18) which has a slightly tapering wall thickness and the external periphery of which is formed with threads (20) which can engage correspondingly shaped threads on the interior wall of a casing hanger.
  • the body part (20) has a circumferential groove which accommodates a crud seal (22).
  • the body has a plurality of angularly spaced through bores (24) which accommodate screws or pins (26). Typically there are four such bores and screws spaced around the running tool body.
  • the body (12) carries within it a first sleeve (30).
  • the first sleeve has three integrally formed sections.
  • a first upper section (32) has a relatively large wall thickness and its upper end is shown located against the shoulder (14).
  • the outer periphery of the section (32) has first and second pairs of grooves (34) and (35) which are located so that one pair (34) is above and one pair (35) is below the ports (15).
  • the grooves (34) and (35) each accommodate annular elastomeric seals (36, 37).
  • the section (32) extends downwardly to an intermediate section (38) of lesser wall thickness.
  • the outer surface of the section (38) has four angularly spaced axially extending grooves (40) which are located at positions corresponding to the screws (26) so that the inner end of each screw can project into a corresponding groove (40).
  • an internal shoulder (42) At the upper end of the section (38) at its junction with the section (32) there is formed an internal shoulder (42).
  • the section (38) extends downwardly to a lower section (44) which has on its inner surface a thread (46).
  • a second sleeve (48) is located coaxially within the first sleeve (30).
  • the second sleeve carries on its upper end an annular crud seal (49) which contacts the inner wall of the intermediate section (38) of the fist sleeve.
  • the second sleeve (48) has on its outer upper cylindrical surface a thread which engages with the thread (46) on the lower end of the first sleeve (30).
  • the lower periphery of the sleeve (48) is formed with a circumferential groove which carries a crud seal (54).
  • FIG. 2 shows the running tool engaged with a casing hanger (60) by virtue of the threads (20).
  • the seals (16) seal against the inner upper circumferential wall of the hanger.
  • a torque tool (62) is disposed within the interior of the running tool body and is carried on the lower end of a drill string (64).
  • the torque tool has actuating members (66) which have been extended radially to engage with the recessed formations (50) formed in the interior surface of the sleeve (48).
  • the sleeve (48) is rotated to cause the outer sleeve (30) to move axially and either open or close the ports (15) depending upon the sense of rotation of the torque tool.
  • Figure 2 the right-hand side shows the outer sleeve in a position in which the washout ports (15) are isolated by the seals (34) and (36). In this position the screws (26) project into the lower end of their respective grooves (40) and the upper end of the inner sleeve (48) is spaced from the shoulder (42).
  • the left-hand side of Figure 2 shows the sleeve (30) lowered to a position in which the washout ports are open. In this position the screws (20) project into the upper end of their respective grooves (40) and the upper end of the inner sleeve (48) is disposed against the shoulder (42).
  • seals (22), (49) and (54) are crud seals which are not fluid-type seals, but are intended to keep out debris and similar material.
  • the seals (36, 37) are annular elastomeric seals.

Landscapes

  • 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)
EP91305899A 1991-06-28 1991-06-28 Outil de pose pour suspension de cuvelage Withdrawn EP0520107A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91305899A EP0520107A1 (fr) 1991-06-28 1991-06-28 Outil de pose pour suspension de cuvelage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91305899A EP0520107A1 (fr) 1991-06-28 1991-06-28 Outil de pose pour suspension de cuvelage

Publications (1)

Publication Number Publication Date
EP0520107A1 true EP0520107A1 (fr) 1992-12-30

Family

ID=8208329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91305899A Withdrawn EP0520107A1 (fr) 1991-06-28 1991-06-28 Outil de pose pour suspension de cuvelage

Country Status (1)

Country Link
EP (1) EP0520107A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6095243A (en) * 1997-06-17 2000-08-01 Plexus Ocean Systems Limited Washout arrangement for a well
GB2480213B (en) * 2009-02-17 2013-07-17 Cameron Int Corp Positive locked slim hole suspension and sealing system with single trip deployment and retrievable tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979566A (en) * 1990-03-26 1990-12-25 Vetco Gray Inc. Washout mechanism for offshore wells
GB2235229A (en) * 1989-08-25 1991-02-27 Dril Quip Inc Adjustable sub for well conduits

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235229A (en) * 1989-08-25 1991-02-27 Dril Quip Inc Adjustable sub for well conduits
US4979566A (en) * 1990-03-26 1990-12-25 Vetco Gray Inc. Washout mechanism for offshore wells

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6095243A (en) * 1997-06-17 2000-08-01 Plexus Ocean Systems Limited Washout arrangement for a well
GB2480213B (en) * 2009-02-17 2013-07-17 Cameron Int Corp Positive locked slim hole suspension and sealing system with single trip deployment and retrievable tool
US9027656B2 (en) 2009-02-17 2015-05-12 Cameron International Corporation Positive locked slim hole suspension and sealing system with single trip deployment and retrievable tool

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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