EP0091842B1 - System zum Verhindern des Mitreissens von Flüssigkeiten in die Abgasfackelmündung - Google Patents

System zum Verhindern des Mitreissens von Flüssigkeiten in die Abgasfackelmündung Download PDF

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Publication number
EP0091842B1
EP0091842B1 EP83400497A EP83400497A EP0091842B1 EP 0091842 B1 EP0091842 B1 EP 0091842B1 EP 83400497 A EP83400497 A EP 83400497A EP 83400497 A EP83400497 A EP 83400497A EP 0091842 B1 EP0091842 B1 EP 0091842B1
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EP
European Patent Office
Prior art keywords
overflow column
overflow
column
flare stack
pipe
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
EP83400497A
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English (en)
French (fr)
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EP0091842A1 (de
Inventor
Gérard Chaudot
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0091842A1 publication Critical patent/EP0091842A1/de
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Publication of EP0091842B1 publication Critical patent/EP0091842B1/de
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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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/34—Arrangements for separating materials produced by the well
    • E21B43/36—Underwater separating arrangements

Definitions

  • the present invention aims to improve such a safety system in order to avoid, in the event of a liquid spill in the overflow column, the retention and trapping of gas in the liquid spilled, or below it, which would lead to a random operation of the entire security system.
  • the security system comprises a circuit allowing the evacuation to the installations located upstream of the overflow column, of the gases existing or entrained by the liquids in the latter, said circuit being constituted by a vertical tube which communicates with the overflow column at different levels uniformly distributed over its height, the lower end of said tube being placed, at the lowest level, in the vicinity of the lowest level reached by the water at l inside the overflow column, while its upper end is connected, either on the torch foot ball at a point located above the connection of the overflow column on said ball, or on the barrel torch of the installation in the case where it acts as a torch foot balloon.
  • said tube consists of a strainer tube of section lower than the overflow column and mounted inside the latter.
  • the gas evacuation tube is placed outside of the overflow column and communicates with it by a series of pipes located at different levels.
  • the invention also aims to improve the operating safety of the overflow column, by detecting an abnormally high level of liquid in said column.
  • the overflow column can lose its quality of safety, either by partial or total blockage, or by a subsequent resizing of the installations placed upstream, leading to liquid flows that can be discharged into the overflow column incompatible with its initial design.
  • the overflow column is equipped with one or more detection members making it possible to detect the presence of hydrocarbons at an abnormal level.
  • detection devices may consist of high level detectors placed in the aerial part of the overflow column, or one or more pressure detectors, differential or not, placed more generally in the lower part of the overflow column. -full.
  • These detectors can also be designed so as to detect the presence of hydrocarbons, for example by optical effect, by capacitive effect, by magnetic effect, by electromagnetic effect or also by measurement of vibratory phenomena.
  • All the detectors according to the invention can be placed either in the overflow column or outside and can be protected or not by an annexed tubing.
  • This verification may for example consist of an injection of water at a known rate into all or part of the entire security system, the injection being carried out at any point of the installation, but so as to allow the verification of the operation of all or part of the security system.
  • the subject of the invention is also a third improvement making it possible to increase the retention capacity of the spilled liquids and finally to improve the overall safety of the system, by increasing the number of overflow columns, this, also for the purpose, not to create localized constraints that are too great, given the retention capacity sought.
  • overflow tubes For this purpose, a multiplicity of overflow tubes can be used, these can be installed in favorable areas, all or part of the existing underlying structures can for example be used for their realization.
  • the commissioning of these overflow columns may if necessary be made when the installation is put into service for the first time, or partially deferred in time according to the required change in the capacity of the installation.
  • Each of the overflow columns is equipped with the previous improvements if necessary.
  • the safety system to which the improvements according to the invention apply is intended to equip installations for the production of hydrocarbons on land and at sea.
  • These installations may comprise, as described in European patent application No. 82 902 735.8, a source of drive for liquid hydrocarbons constituted by a separator receiving the crude oil or the gas by an inlet pipe.
  • This separator can be fitted, in a conventional manner, with a normal recovery circuit for oil or condensates and with a gas outlet connected to a gas flow chain up to the nose of the torch.
  • This gas flow chain comprises, between the separator and the nose of the torch, a torch foot balloon (or equivalent) equipped, in a conventional manner with a drip recovery circuit which may include a pump.
  • These installations further comprise, as described in the aforementioned patent application, an overflow column coming to be stuck on the torch foot ball at a location corresponding to a predetermined maximum level and opening out below the level of the sea at a predetermined distance, below the nozzle on said balloon.
  • FIGS. 1 and 2 of this patent application gas drive 2 and connected, in its upper part, to the torch barrel 3.
  • an overflow column 4 On this torch foot balloon 1 is also stuck an overflow column 4, at a location corresponding to a predetermined maximum level, and opening below sea level 5, 6.
  • this overflow column 4 includes, inside, a strainer tube 7 substantially coaxial and of smaller cross section than that of said column 4.
  • this screened tube 7 is placed at the lowest, in the vicinity of the lowest level 6 reached by the water inside the overflow column 4 in the event of operation of the system.
  • Its upper end 8 is in turn connected (conduit 9) either on the torch foot balloon 1 at a point 10 located above the nozzle 11 of the overflow column 4 on said balloon 1 (as in the example shown) or on the torch barrel if it plays the role of the torch base balloon.
  • the stitching point 10 of the strainer tube will be located at a point in the gas venting circuit, such that the separation of liquids, possibly entrained by the rising gases, can be carried out before venting the gases.
  • the horizontal or subhorizontal part 12 of the overflow column 4 may, preferably, but not necessarily, open tangentially into the vertical or subvertical part of the overflow column 4, in order to minimize trapping or the entrainment of gas in said column 4.
  • the inner surface of the upper end of the vertical part of the overflow column 4 may, preferably but not necessarily, be equipped with devices, for example guide fins or helical ramps generating a helical movement of descending liquids in the overflow column 4, this in order to promote the flow of the descending liquids and create a central chimney for the evacuation of the trapped gases below the liquids or driven by them.
  • the winding direction, of the guide ramps for example, will depend on the terrestrial hemisphere on which it is located, (to take account of the forces of Coriolis).
  • FIG. 2 relates to a second embodiment of a circuit allowing the evacuation of the gases inside the overflow column 4.
  • This circuit which makes it possible to obtain effects similar to those obtained using the Screened tube previously described, however, differs from it by the fact that it involves, for the evacuation of the gases trapped in the overflow column 4, an evacuation tube 13 placed outside.
  • This discharge tube 13 (vertical) which is placed substantially parallel to the overflow column 4 communicates with the latter by a series of possibly horizontal tubes 14 allowing the evacuation of the trapped gases at different levels.
  • this discharge tube 13 is connected to the torch base balloon 1 at a point 16 located above the nozzle 17 of the overflow column 4 on said balloon 1, it being understood that this connection could also be carried out on the torch barrel 3 in the case where it plays the role of the torch base balloon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Claims (8)

1. Verbessertes Sicherheitssystem zum Verhindern jeder Gefahr des Mitreißens von Flüssigkeiten in die Fackelspitze oder die Abzugsmündung beim Abfackeln oder bei der Dispersion der mit der Gewinnung oder Verarbeitung von Kohlenwasserstoffen verbundenen Gase, wobei dieses System in der Kette des Gasflusses zwischen dem Ursprung des Mitreißens von Flüssigkeiten und der Fackelspitze oder Abzugsmündung mindestens eine Kapazität wie beispielsweise einen Fackelfußkolben (1) aufweist, der mit mindestens einer überlaufsäule (4) versehen ist, die unterhalb eines Flüssigkeitsniveaus (5, 6) beispielsweise des Meeres in einem vorherbestimmten Abstand von ihrer Rohrabzweigung (11) auf der Kapazität offen einmündet, und Mittel, die im Fall von Flüssigkeitsausschüttung in die überlaufsäule (4) das Zurückhalten und Einfangen von Gas in der ausgeschütteten Flüssigkeit oder unterhalb dieser Flüssigkeit zu vermeiden ermöglichen, dadurch gekennzeichnet, daß es einen Kreislauf (7; 13, 14) aufweist, der die Entleerung der vorhandenen oder der durch die Flüssigkeiten in die überlaufsäule mitgerissenen Gase gerade in die Einrichtungen ermöglicht, die oberhalb der überlaufsäule (4) liegen, wobei dieser Kreislauf aus einem senkrechten Rohr (7; 13) besteht, das mit der überlaufsäule auf in der Höhe verschiedenen gleichmäßig verteilten Ebenen in Verbindung steht und das untere Ende des Rohrs an der tiefsten Stelle in der Nähe der tiefsten (6) von dem Wasser im Inneren der überlaufsäule erreichten Ebene angeordnet ist, während sein oberes Ende entweder an einer Stelle (10) an den Fackelfußkolben (1) angeschlossen ist, die über der Rohrabzweigung (11) des überlaufrohrs in den Kolben (1) liegt, oder an den Fackelschaft (3) der Einrichtung in dem Fall, in dem dieser die Rolle des Fackelfußkolbens spielt.
2. System nach Anspruch 1, dadurch gekennzeichnet, daß das Rohr ein Sieb-Rohr (7) ist, das einen Querschnitt kleiner als der der überlaufsäule (4) aufweist und das innerhalb dieser angeordnet ist.
3. System nach Anspruch 2, dadurch gekennzeichnet, daß der Abzweigpunkt (10) des Sieb-Rohrs (7) auf der Einrichtung an einem Entlüftungspunkt für die Gase liegt, so daß die Trennung der Flüssigkeiten, die möglicherweise von den aufsteigenden Gasen mitgerissen werden, vor der Entlüftung der Gase stattfinden kann.
4. System nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der horizontale (12) oder der subhorizontale Teil der überlaufsäule (4) tangential in den vertikalen oder subvertikalen Teil der überlaufsäule (4) einmündet, um das Einfangen oder das Mitreißen des Gases in der Säule (4) so gering wie möglich zu halten.
5. System nach Anspruch 1, dadurch gekennzeichnet, daß das Gasabzugsrohr (13) außerhalb der überlaufsäule (4) angeordnet ist und mit dieser über eine Reihe von kurzen Rohren (14) in Verbindung steht, die in verschiedenen Höhen verlaufen.
6. System nach Anspruch 1 von der Art mit mindestens einem Detektor, der das Vorhandensein von Kohlenwasserstoffen auf einer anomalen Ebene im Inneren der überlaufsäule (4) festzustellen ermöglicht, dadurch gekennzeichnet, daß dieser Detektor aus einem oder mehreren Tastern von hohem Niveau besteht, die in dem oberirdischen Teil der überlaufsäule (4) eingesetzt werden können, und/oder aus einem oder mehreren Differential-Drucktastern, die vorzugsweise in den unteren Teil des überlaufrohrs (4) eingesetzt werden, und/oder auch aus einem oder mehreren Tastern, die so beschaffen sind, daß sie das Vorhandensein von Kohlenwasserstoffen beispielsweise durch optischen Effekt, durch kapazitiven Effekt, durch magnetischen Effekt, durch elektromagnetischen Effekt oder auch durch Messung von Schwingungsphänomenen feststellen.
7. System nach Anspruch 6, dadurch gekennzeichnet, daß der erwähnte Detektor entweder in der überlaufsäule (4) oder außerhalb dieser angeordnet ist und durch ein Zusatzrohr geschützt ist.
8. System nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es eine Vielzahl von überlaufsäulen (4) vorgesehen sind, die in die günstigsten Bereiche der Gasabflußkette eingesetzt sind.
EP83400497A 1982-03-12 1983-03-11 System zum Verhindern des Mitreissens von Flüssigkeiten in die Abgasfackelmündung Expired EP0091842B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8204246A FR2523271B2 (fr) 1982-03-12 1982-03-12 Systeme de securite perfectionne, destine a eliminer tout risque d'entrainement de liquides au nez de torche ou a l'event, lors du torchage ou de la dispersion des gaz associes a la production
FR8204246 1982-03-12

Publications (2)

Publication Number Publication Date
EP0091842A1 EP0091842A1 (de) 1983-10-19
EP0091842B1 true EP0091842B1 (de) 1986-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400497A Expired EP0091842B1 (de) 1982-03-12 1983-03-11 System zum Verhindern des Mitreissens von Flüssigkeiten in die Abgasfackelmündung

Country Status (7)

Country Link
US (1) US4553989A (de)
EP (1) EP0091842B1 (de)
AU (1) AU1339483A (de)
DE (1) DE3364018D1 (de)
FR (1) FR2523271B2 (de)
NO (1) NO834069L (de)
WO (1) WO1983003280A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5185019A (en) * 1990-10-22 1993-02-09 Westinghouse Electric Corp. Filtering apparatus
CN113442329B (zh) * 2021-05-19 2023-06-02 安徽百通达科技医疗用品有限公司 一种高精度pvc手套生产原料箱用气泡集留设备

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1863111A (en) * 1928-05-25 1932-06-14 Oil Well Supply Co Oil and gas separator
US2578568A (en) * 1947-11-01 1951-12-11 Albert C Mayer Gas-liquid separator
NL87758C (de) * 1954-06-30
BE561635A (de) * 1956-10-19
US3019948A (en) * 1958-07-07 1962-02-06 Huska Paul Fluid reservoir
US3088595A (en) * 1959-10-07 1963-05-07 British Oxygen Co Ltd Filter unit
US3151961A (en) * 1961-01-09 1964-10-06 Joseph J Blackmore Vortex-type de-aerator and strainer
US3362140A (en) * 1964-08-25 1968-01-09 Lambert H. Mott Dust filter
US3386230A (en) * 1966-12-27 1968-06-04 Donaldson Co Inc Liquid and gas separator
US3486306A (en) * 1968-04-05 1969-12-30 Joseph J Blackmore Liquid downflow air purging means for a vortex type de-aerator and the like
US3557396A (en) * 1968-11-13 1971-01-26 Mobil Oil Corp Floating storage system with buoymounted separator
US3778984A (en) * 1971-03-02 1973-12-18 Ford Motor Co Gas liquid separator for use in a refrigeration system
BE790646A (fr) * 1971-10-29 1973-02-15 Erap Installation pour la separation de fond des effluents des puitsproducteurs d'un champ petrolier marin
US3893918A (en) * 1971-11-22 1975-07-08 Engineering Specialties Inc Method for separating material leaving a well
US3771290A (en) * 1971-12-06 1973-11-13 Armstrong Ltd S A Vortex de-aerator
SE407904B (sv) * 1975-12-23 1979-04-30 Atlas Copco Ab Anordning vid separering av vetska fran vetskebemengd komprimerad gas
GB2063776B (en) * 1979-11-08 1984-04-18 Duke J A Apparatus and method for collecting subsea oil leakage and the like
NO801409L (no) * 1979-12-20 1981-06-22 Chicago Bridge & Iron Co Fremgangsmaate og innretning for oppsamling av olje og gass som stroemmer ut ukontrollert fra en offshore-broenn
FR2513356A1 (fr) * 1981-09-23 1983-03-25 Chaudot Gerard Systeme de securite destine a eliminer tout risque d'entrainement de liquides au nez de torche ou a l'event, lors du torchage ou de la dispersion des gaz associes a la production ou au traitement d'hydrocarbures a terre et en mer

Also Published As

Publication number Publication date
WO1983003280A1 (fr) 1983-09-29
AU1339483A (en) 1983-10-24
EP0091842A1 (de) 1983-10-19
NO834069L (no) 1983-11-08
FR2523271B2 (fr) 1986-01-10
FR2523271A2 (fr) 1983-09-16
DE3364018D1 (en) 1986-07-17
US4553989A (en) 1985-11-19

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