NO772027L - - Google Patents
Info
- Publication number
- NO772027L NO772027L NO77772027A NO772027A NO772027L NO 772027 L NO772027 L NO 772027L NO 77772027 A NO77772027 A NO 77772027A NO 772027 A NO772027 A NO 772027A NO 772027 L NO772027 L NO 772027L
- Authority
- NO
- Norway
- Prior art keywords
- capsule
- valve
- tree
- wellhead
- valve tree
- Prior art date
Links
- 239000002775 capsule Substances 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 238000011109 contamination Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/06—Work chambers for underwater operations, e.g. temporarily connected to well heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/34—Diving chambers with mechanical link, e.g. cable, to a base
- B63C11/36—Diving chambers with mechanical link, e.g. cable, to a base of closed type
- B63C11/40—Diving chambers with mechanical link, e.g. cable, to a base of closed type adapted to specific work
-
- 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
- E21B33/037—Protective housings therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Catching Or Destruction (AREA)
- Packages (AREA)
- Seal Device For Vehicle (AREA)
Description
BrønnhodeWell head
Foreliggende oppfinnelse angår undervanns-brønnhode.The present invention relates to an underwater wellhead.
En underwannsbrønn for gass eller olje omfatter etAn underwater well for gas or oil comprises a
hull som er forsynt med foringsrør, hvori det under havbunns-nivået er anordnet et ventilutstyr innrettet for å stenge og derved hindre lekkasjer og forurensning av havet. På toppen av disse foringsrør er der en kobleinnretning, på hvilken kan monteres et såkalt ventiltre. I ventiltreet er der en hovedventil. Det har vært foreslått å omslutte hele brønnhodet med en kapsel. Dette forslag innebærer imidlertid at hvis der er en feil mellom de to ventiler,, vil innholdet av brønnhodet mellom de to ventiler selv om det er utilstrekkelig alvorlig til å forurense havet, sannsynligvis unnslippe til et avgrenset rom av kapselen og alvorlig hindre operasjoner på ventiltreet. Hvis dessuten den første ventil svikter, vil der være en øk-ning av trykk og ytterligere påkjenninger på tetningene i brønnhodet når hovedventilen stenges, hvilket vil søke å øke faren for utstrømning inn i kapselen. Da reparasjonsarbeidet på den første ventil ville medføre plugging av brønnen ved hjelp av organer ført inn i brønnen gjennom et slusearrangement i forbindelse med ventiltreet, er det ønskelig å redusere til et minimum forurensningene av kapselen ved eventuell lekkasje. hole that is fitted with casing, in which a valve device designed to close and thereby prevent leaks and pollution of the sea is arranged below the seabed level. On top of these casings there is a coupling device, on which a so-called valve tree can be mounted. In the valve tree there is a main valve. It has been proposed to enclose the entire wellhead with a capsule. However, this proposal implies that if there is a fault between the two valves, the contents of the wellhead between the two valves, although insufficiently serious to contaminate the sea, will likely escape into a confined space of the capsule and seriously impede operations on the valve tree. If, moreover, the first valve fails, there will be an increase in pressure and further stresses on the seals in the wellhead when the main valve is closed, which will tend to increase the risk of outflow into the capsule. As the repair work on the first valve would involve plugging the well by means of bodies brought into the well through a sluice arrangement in connection with the valve tree, it is desirable to reduce to a minimum the contamination of the capsule in the event of a leak.
I samsvar med foreliggende oppfinnelse er der skaffet et.brønnhode omfattende en kobleinnretning og et ventiltre med en kapsel som omslutter ventiltreet bg en hovedventil inne i ventiltreet og oppfinnelsen utmerker seg ved at hovedventilen befinner seg inne i en konstruksjonsdel som danner foten på ventiltreet, hvilken konstruksjonsdel trenger gjennom og er tettet i bunnen av kapselen og bærer denne og at hovedventilen er inne i en del av konstruksjonsdelen inne i kapselen. In accordance with the present invention, a wellhead has been provided comprising a coupling device and a valve tree with a capsule that encloses the valve tree and a main valve inside the valve tree, and the invention is distinguished by the fact that the main valve is located inside a construction part that forms the foot of the valve tree, which construction part penetrates and is sealed at the bottom of the capsule and supports this and that the main valve is inside a part of the construction part inside the capsule.
En utførelse av oppfinnelsen skal beskrives nærmere i det følgende som et rent eksempel under henvisning til teg ningen sorn er et uertikalsnitt av en kapsel som omslutter et ventiltre og viser en kobleinnretning for et brønnhode. An embodiment of the invention shall be described in more detail in the following as a pure example with reference to the drawing which is a vertical section of a capsule which encloses a valve tree and shows a coupling device for a wellhead.
På tegningen rager brønnhodets foringsrør 12 opp fra havbunnen 11 på hvilket foringsrør er festet et ventiltre 14 innelukket i en tettet kapsel 15. Rørledningen 16 er ført gjennom egnede gjennomføringer 17 i veggen av kapselen for å kobles til ventiltreet. Brønnhodets foringsrør ender i en kobleinnretning 110, på hvilken ventiltreet er montert. Tetningene mellom foringsrøret og kobleinnretningeh er utenfor kapselen, slik at eventuell lekkasje også ville være utenfor kapselen. En konstruksjonsdel 111 som danner foten av ventiltreet, er en solid blokk (ved at den omfatter en i ett stykke utført kapsling) og trenger gjennom bunnen av kapselen og er tettet til denne ved hjelp av tetninger 115. Kapselen er båret av denne konstruksjonsdel. Konstruksjonsdelen inneholder i den del av samme som er inne i kapselen, en hovedventil 112 som kan betjenes ved hjelp av et håndratt 113 eller ved hjelp av en hydraulisk motor 114 fjern-styrt ved hjelp av hydrauliske organer. Betjeningsinnretningen er inne i kapselen. Denne konstruksjonsdel er selvsagt tettet overfor kobleinnretningen som ligger umiddelbart under den, men tetningene ér utenfor kapselen. In the drawing, the wellhead's casing 12 protrudes from the seabed 11 on which casing a valve tree 14 enclosed in a sealed capsule 15 is attached. The pipeline 16 is led through suitable penetrations 17 in the wall of the capsule to be connected to the valve tree. The wellhead casing ends in a coupling device 110, on which the valve tree is mounted. The seals between the casing and the coupling device are outside the capsule, so that any leakage would also be outside the capsule. A structural part 111 which forms the base of the valve tree is a solid block (in that it comprises a one-piece enclosure) and penetrates the bottom of the capsule and is sealed to this by means of seals 115. The capsule is supported by this structural part. The construction part contains, in the part of the same that is inside the capsule, a main valve 112 which can be operated by means of a handwheel 113 or by means of a hydraulic motor 114 remotely controlled by means of hydraulic organs. The control device is inside the capsule. This structural part is of course sealed against the coupling device which lies immediately below it, but the seals are outside the capsule.
Det vil forståes at ved denne konstruksjon må eventuell' lekkasje inn i kapselen være fra hovedventildelen som kan.være konstrusert for å eliminere enhver mulighet for lekkasje. Så-ledes utsettes kapselen ikke for forurensning ved lakkasje fra brønnhodet. It will be understood that with this construction any leakage into the capsule must be from the main valve part which can be constructed to eliminate any possibility of leakage. In this way, the capsule is not exposed to contamination by lacquer from the wellhead.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3666772A GB1461251A (en) | 1973-02-05 | 1973-02-05 | Method of working under water and apparatus therefor |
| NO74740359A NO149539C (en) | 1973-02-05 | 1974-02-04 | PROCEDURE AND APPARATUS FOR UNDERWATER WORK |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO772027L true NO772027L (en) | 1974-08-06 |
Family
ID=10390185
Family Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO74740359A NO149539C (en) | 1973-02-05 | 1974-02-04 | PROCEDURE AND APPARATUS FOR UNDERWATER WORK |
| NO77772027A NO772027L (en) | 1973-02-05 | 1977-06-10 | |
| NO77772029A NO150232C (en) | 1973-02-05 | 1977-06-10 | Capsule to enclose part of a subsea facility |
| NO77772028A NO142953C (en) | 1973-02-05 | 1977-06-10 | WATER SEALING DEVICE. |
| NO79793802A NO793802L (en) | 1973-02-05 | 1979-11-23 | PROCEDURES FOR WORK UNDER WATER |
| NO79793801A NO793801L (en) | 1973-02-05 | 1979-11-23 | PROCEDURES FOR WORK UNDER WATER |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO74740359A NO149539C (en) | 1973-02-05 | 1974-02-04 | PROCEDURE AND APPARATUS FOR UNDERWATER WORK |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO77772029A NO150232C (en) | 1973-02-05 | 1977-06-10 | Capsule to enclose part of a subsea facility |
| NO77772028A NO142953C (en) | 1973-02-05 | 1977-06-10 | WATER SEALING DEVICE. |
| NO79793802A NO793802L (en) | 1973-02-05 | 1979-11-23 | PROCEDURES FOR WORK UNDER WATER |
| NO79793801A NO793801L (en) | 1973-02-05 | 1979-11-23 | PROCEDURES FOR WORK UNDER WATER |
Country Status (4)
| Country | Link |
|---|---|
| FR (1) | FR2216168B1 (en) |
| GB (1) | GB1461251A (en) |
| NL (1) | NL7401579A (en) |
| NO (6) | NO149539C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO159071C (en) * | 1986-05-06 | 1988-11-30 | Norske Stats Oljeselskap | ONE ATMOSPHERIC ROOM. |
| CN110206553B (en) * | 2019-07-08 | 2024-08-20 | 厦门厦工中铁重型机械有限公司 | Shield body structure of shield tunneling machine |
| CN111219169B (en) * | 2020-01-07 | 2021-10-29 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Underwater maintainable dry working cabin |
| CN113529666B (en) * | 2021-06-29 | 2022-06-28 | 中国船舶科学研究中心 | Sealing device and sealing method for underwater irregular surface |
| CN113335477B (en) * | 2021-07-07 | 2024-06-21 | 烟台宏远载人压力舱工程技术研究院有限公司 | Modularized lifesaving decompression system |
| CN116337369B (en) * | 2023-05-23 | 2023-12-08 | 以梦为马(沈阳)科技有限公司 | Water leakage detection device for watertight cabin of underwater robot |
-
1973
- 1973-02-05 GB GB3666772A patent/GB1461251A/en not_active Expired
-
1974
- 1974-02-04 NO NO74740359A patent/NO149539C/en unknown
- 1974-02-05 FR FR7403793A patent/FR2216168B1/fr not_active Expired
- 1974-02-05 NL NL7401579A patent/NL7401579A/xx active Search and Examination
-
1977
- 1977-06-10 NO NO77772027A patent/NO772027L/no unknown
- 1977-06-10 NO NO77772029A patent/NO150232C/en unknown
- 1977-06-10 NO NO77772028A patent/NO142953C/en unknown
-
1979
- 1979-11-23 NO NO79793802A patent/NO793802L/en unknown
- 1979-11-23 NO NO79793801A patent/NO793801L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO149539C (en) | 1984-05-09 |
| NO772029L (en) | 1974-08-06 |
| NO793802L (en) | 1974-08-06 |
| NO142953B (en) | 1980-08-11 |
| NO740359L (en) | 1974-08-06 |
| FR2216168A1 (en) | 1974-08-30 |
| NO149539B (en) | 1984-01-30 |
| GB1461251A (en) | 1977-01-13 |
| NL7401579A (en) | 1974-08-07 |
| FR2216168B1 (en) | 1978-06-30 |
| NO150232B (en) | 1984-06-04 |
| NO772028L (en) | 1974-08-06 |
| NO793801L (en) | 1974-08-06 |
| NO150232C (en) | 1984-09-12 |
| NO142953C (en) | 1980-11-19 |
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