GB780298A - Pipe suspensions and sealing means - Google Patents

Pipe suspensions and sealing means

Info

Publication number
GB780298A
GB780298A GB1266/56A GB126656A GB780298A GB 780298 A GB780298 A GB 780298A GB 1266/56 A GB1266/56 A GB 1266/56A GB 126656 A GB126656 A GB 126656A GB 780298 A GB780298 A GB 780298A
Authority
GB
United Kingdom
Prior art keywords
hanger
pipe
head
ring
shoulder
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.)
Expired
Application number
GB1266/56A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB780298A publication Critical patent/GB780298A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • E21B33/04Casing heads; Suspending casings or tubings in well heads
    • E21B33/0422Casing heads; Suspending casings or tubings in well heads a suspended tubing or casing being gripped by a slip or an internally serrated member

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)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

780,298. Well casing heads. BUTLER, G. A. Jan. 13. 1956 [April 4, 1955], No. 1266/56. Class 85 A pipe suspension and seal apparatus includes a well or casing head 30 having upper and lower seats 55, 43, and a pipe hanger 40 provided with upper and lower shoulders 54, 42 respectively adapted to engage the seats, the axial distance between the seats being different from that between the shoulders when a pipe is not disposed in the hanger whereby when the latter is initially placed in the head without pipe load only one of the shoulders 54 engages the corresponding seat 55. Sealing means 52 for sealing between the hanger and well head are disposed in the connection between the parts of the hanger, and the latter is provided with means to engage a pipe to transfer weight to the part of the hanger having the shoulder 42 that is not initially engaged on the seat 43, the sealing means shortening axially when pipe load is transmitted thereto until the shoulder 42 is seated. As shown in Fig. 1, the head 30 is secured to the upper end of a casing 31, and a pipe 32 supported by the head extends into and is sealed to the lower -portion of a head 33. The hanger 40, Figs. 7 and 8, is in halves pivotally connected together by a spring hinge 45 located in a channel 47, a snap latch 48 being arranged oppositely of the hinge; a dowel pin 49<SP>1</SP> maintains, alignment of the halves of the hanger. The top portion of the hanger is formed by a compression ring 51 and a support ring 50, both rings being in halves, and disposed between those rings is a split sealing ring 52 of neoprene; the three rings are held together by and are slidable on a number of screws 53 engaged in the lower part 41 of the hanger. The conical shoulder 54 is formed on the ring 50, and the shoulder 42, also conical, is provided on the part 41. The latter has an internal conical recess 60 within which are disposed a number of slips 61 each provided with a tapped recess 62 which can be aligned with one of a number of holes 63 in the hanger whereby a screw retains each slip in a retracted position as shown in Fig. 2A, those screws being removed after the hanger is placed around the pipe 32 and before the latter is lowered into the head; the slips are maintained in vertical alignment by the engagement of a pin, secured to one side of each slip, with a groove in the adjacent slip. Each slip is formed internally with a number of upwardlydirected teeth 66 of modified buttressthread cross-section and, externally, with a number of downwardly-directed teeth 67 also of buttress-thread cross-section and having flat crests 68. In operation, when the hanger is placed in the head 30 the top of the part 41 of the hanger is in contact with the ring 50, Fig. 2A, and the hanger is seated on the shoulder 55 of the. head. Lowering of the pipe 32 causes the slips to move downwardly in the recess 60 and the hanger to seat on the shoulder 43, the screws 53 consequently drawing the ring 51 down to radially expand the ring 52 against the head and the pipe. Where that portion of the weight of the pipe transferred to the screws is insufficient to cause the ring 52 to form a good seal, additional pressure is placed upon the ring by screws 57 extending through a flange of the head 30 and engaging a bevel on the ring 51. The slips are hardened so that the teeth 66 and 67 respectively bite into the surfaces of the pipe and recess 60.
GB1266/56A 1955-04-04 1956-01-13 Pipe suspensions and sealing means Expired GB780298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US780298XA 1955-04-04 1955-04-04

Publications (1)

Publication Number Publication Date
GB780298A true GB780298A (en) 1957-07-31

Family

ID=22141478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266/56A Expired GB780298A (en) 1955-04-04 1956-01-13 Pipe suspensions and sealing means

Country Status (1)

Country Link
GB (1) GB780298A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691791A (en) * 1983-08-17 1987-09-08 Vallourec Knurled drill stem
GB2230035A (en) * 1989-04-07 1990-10-10 Vetco Gray Inc Emergency casing hanger and packoff
GB2242465A (en) * 1990-03-30 1991-10-02 Fmc Corp Well casing hanger with wide temperature range seal
GB2314867A (en) * 1996-07-01 1998-01-14 Fmc Corp Automatic slip casing hanger
GB2503560A (en) * 2012-05-10 2014-01-01 Vetco Gray Inc Positive retention lock ring for tubing hanger
US10113383B2 (en) 2012-05-10 2018-10-30 Vetco Gray, LLC Positive retention lock ring for tubing hanger

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691791A (en) * 1983-08-17 1987-09-08 Vallourec Knurled drill stem
GB2230035A (en) * 1989-04-07 1990-10-10 Vetco Gray Inc Emergency casing hanger and packoff
GB2230035B (en) * 1989-04-07 1992-12-09 Vetco Gray Inc Emergency casing hanger
GB2242465A (en) * 1990-03-30 1991-10-02 Fmc Corp Well casing hanger with wide temperature range seal
GB2242465B (en) * 1990-03-30 1994-06-01 Fmc Corp Well casing hanger with wide temperature range seal
GB2314867A (en) * 1996-07-01 1998-01-14 Fmc Corp Automatic slip casing hanger
GB2503560A (en) * 2012-05-10 2014-01-01 Vetco Gray Inc Positive retention lock ring for tubing hanger
GB2503560B (en) * 2012-05-10 2016-02-17 Vetco Gray Inc Positive retention lock ring for tubing hanger
US10113383B2 (en) 2012-05-10 2018-10-30 Vetco Gray, LLC Positive retention lock ring for tubing hanger

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