US3739846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head to hanger hydraulic connection
Assignee: Cooper Industries LLC
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Filing: 1972-01-19
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Granted: 1973-06-19
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Expires: 1992-01-19
Abstract
Abstract Well completion apparatus comprises a tubing head and a tubing hanger, tubing suspended from the hanger, a valve in the tubing biased to closed position and adapted to be opened by the pressure from a control line, a control line extending from the valve to the tubing hanger and connected to passage means in the tubing hanger, passage means in the tubing head adapted for connection to a source of control pressure fluid, and means for connecting the passage means in the head with the passage means in the hanger. In one embodiment a retractable screw type tubular stinger in the tubing head makes the connection with the tubing hanger passage means by sealingly entering a socket in the tubing hanger. Means is provided to align the tubing hanger azimuthally relative to the tubing head to allow the stinger to enter such socket. In another embodiment the tubing hanger is provided with annular isolation seals above and below an annular groove in the tubing hanger at the outer end of the passage means therein, the seals engaging the tubing head above and below the passage means therein. In this embodiment no azimuthal alignment means is required.
Inventors
- 👤 J Beson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/16; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/0387; E21B33/04; E21B33/047; E21B34/06; E21B34/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
98 words
Well completion apparatus comprising a tubing head, a tubing hanger supported within the tubing head, connection means on an underside of the tubing hanger for making connection to a pressure fluid control line, passage means in said tubing hanger extending upwardly from said connection means and thence outwardly to the side of the tubing hanger adjacent the inner periphery of the tubing head, and passage means extending through the side of the tubinghead in fluid flow communication with said passage means in the tubing hanger and adapted for connection with a pressure fluid line outside the tubing head.
Claim 2
Dependent Claim
98 words
Well completion apparatus comprising a tubing head, a tubing hanger supported within the tubing head, connection means on an underside of the tubing hanger for making connection to a pressure fluid control line, passage means in said tubing hanger extending upwardly from said connection means and thence outwardly to the side of the tubing hanger adjacent the inner periphery of the tubing head, and passage means extending through the side of the tubinghead in fluid flow communication with said passage means in the tubing hanger and adapted for connection with a pressure fluid line outside the tubing head.
Claim 3
Dependent Claim
29 words
Apparatus according to claim 1 including seal means at the juncture of said passage means to prevent escape of pressure fluid from said passage means into the tubing head.
Claim 4
Dependent Claim
72 words
Apparatus according to claim 2 wherein the passage means in the tubing head is formed by a tubular stinger which is disposed in the side of the tubing head and is movable between an extended position in which the inner end of the stinger is received in the passage means in the tubing hanger, and a retracted position in which said end is withdrawn from the passage means in the tubing hanger.
Claim 5
Dependent Claim
32 words
Apparatus according to claim 3 in which the passage means in the tubing head includes means for holding the stinger in the desired one of said positions against forces acting axially thereon.
Claim 6
Dependent Claim
30 words
Apparatus according to claim 4 wherein said seal means comprises a packing means in the annulus between the end of the stinger and the passage means in the tubing hanger.
Claim 7
Dependent Claim
45 words
Apparatus according to claim 4 wherein said means for holding the stinger in the desired position comprises threads on the stinger and tubing head, and said seal means includes means whereby said packing means is compressed when said stinger is moved to said extended position.
Claim 8
Dependent Claim
42 words
Apparatus according to claim 6 wherein said passage means in said tubing head includes packing gland means to seal between said stinger and said tubing head, said packing gland means being provided in a boss on the side of said tubing head.
Claim 9
Dependent Claim
42 words
Apparatus according to claim 7 in which said tubing head includes an upper flange above said boss and a lower flange below said boss, said flanges providing means for making connection respectively to an upper tree element and a casing head respectively.
Claim 10
Dependent Claim
33 words
Apparatus according to claim 8 wherein said tubing heanger includes sandwich packoff means for sealing between the tubing hanger and tubing head above the level of said seal means between said passage means.
Claim 11
Dependent Claim
74 words
Apparatus according to claim 9 including tubing suspended from said tubing hanger, valve means in said tubing biased to closed position and adapted to be opened by the pressure of a control fluid, conduit means connecting said valve to said connection means in the tubing hanger for conducting said control fluid to the valve to hold the valve open, and means for supplying said control fluid to said passage means in the tubing head.
Claim 12
Dependent Claim
99 words
Apparatus according to claim 2 wherein said seal means comprises upper and lower annular seals disposed around said tubing hanger between said hanger and head respectively above and below the terminus at the exterior of said hanger of said passage means in said hanger, said seals being respectively above and below the terminus at the interior of said head of said passage means in said head, and said passage means in said hanger including an annular groove around the outside of said hanger at a level between said annular seals ehich are respectively above and below said annular groove.
Claim 13
Dependent Claim
50 words
Apparatus according to claim 2, said tubing hanger including a plurality of sectors for suspending a plurality of tubing strings, each sector including a vertical flow passage and wings at each side of said flow passage, said passage means in said tubing hanger being disposed in one of said wings.
Claim 14
Dependent Claim
34 words
Apparatus according to claim 12, said tubing hanger and tubing head being provided with means for azimuthally aligning said hanger in said head for registry of said passage means in said head and hanger.
Claim 15
Dependent Claim
54 words
Apparatus according to claim 13, said passage means in said head and hanger being duplicated in each sector, each passage means in each sector including a vertical portion extending upwardly from a lower face of the hanger and a radial portion extending inwardly from the outer periphery of the hanger To said vertical portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |