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WO1998039520A1 - Appareil pour la separation et la retention du petrole a la surface d'une zone aquifere - Google Patents

Appareil pour la separation et la retention du petrole a la surface d'une zone aquifere Download PDF

Info

Publication number
WO1998039520A1
WO1998039520A1 PCT/GB1998/000679 GB9800679W WO9839520A1 WO 1998039520 A1 WO1998039520 A1 WO 1998039520A1 GB 9800679 W GB9800679 W GB 9800679W WO 9839520 A1 WO9839520 A1 WO 9839520A1
Authority
WO
WIPO (PCT)
Prior art keywords
boom
oil
water
containment area
skirt
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.)
Ceased
Application number
PCT/GB1998/000679
Other languages
English (en)
Inventor
James Allen-Jones
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
Priority to AU64076/98A priority Critical patent/AU6407698A/en
Publication of WO1998039520A1 publication Critical patent/WO1998039520A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E02B15/0857—Buoyancy material
    • E02B15/0864—Air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

Definitions

  • This invention relates to apparatus for use in separating and retaining oil from the surface of an area of water.
  • booms there are a number of different forms of oil-slick containment booms currently available, and these typically comprise flotation members with weighted skirts depending therefrom, the skirts being intended to minimise the volume of oil that passes beneath the boom.
  • the boom may also include upwardly directed fins, to limit the volume of oil washed over the boom.
  • apparatus for use in separating and retaining oil from the surface of an area of water, the apparatus comprising: a boom comprising a flotation member and a skirt depending therefrom, the member having towing attachments such that, in use, the boom may be towed through water by a towing vessel; and means for defining a containment area rearwardly of the boom, the arrangement being such that a portion of the member permits flow of oil over said portion and into said containment area.
  • a method of separating and retaining oil from the surface of an area of water comprising: providing a first boom comprising a flotation member and a skirt depending therefrom and a containment area rearwardly of the boom; towing the boom through water having a layer of oil thereon; and arranging a portion of the boom to permit oil- flow past said boom portion and into said containment area.
  • the boom may be arranged such that oil in front of the boom will tend to gather at said portion of the boom, typically a central portion of the boom, and will then flow into the containment area, where the oil will be retained.
  • One of the primary aims of the preferred embodiments of the invention is to thicken the oil layer on the water to facilitate oil recovery; the apparatus will typically be used in combination with a recovery device for pumping the gathered oil from the containment area and means for storing the recovered oil.
  • the oil layer resulting from a spill is typically around 1 cm thick, and recovery is facilitated by thickening of the oil layer; embodiments of the present invention aim to provide an oil layer in the containment area of up to 20 cm, although an oil layer of 3 cm or more facilitates recovery significantly.
  • the boom is configured such that, when the speed of the apparatus relative to the water reaches a predetermined rate, said portion of the boom submerges, allowing oil to flow over the boom and into the containment area; below this speed the boom portion remains on the surface and is effective to retain oil in the containment area.
  • the flotation member may further comprise sections at said portion which are not intended to submerge. Such sections will pierce the water surface and thus enhance the stability of the boom portion.
  • the central portion of the boom may include openings to permit flow of oil into the containment area. The openings may be provided with valves that open only when the boom and skirt are moving relative to the water. In other embodiments, the skirt may be configured to direct water under the containment area.
  • the boom will assume a near catenary configuration while being towed.
  • the boom includes a tension member attached to the skirt and having ends attached to towing points on the boom to ensure that the skirt extends forwardly of the flotation member while the boom is moved through the water.
  • the containment area may be defined by a further boom comprising a flotation member and skirt, ends of the flotation member being attached to the flotation member of the first boom and a leading edge of the skirt being attached to the skirt of the first boom.
  • the containment area defines vents, submerged in use, which permit water to escape from the containment area.
  • the boom is of a flexible material and the flotation member may be inflatable.
  • the boom is divided longitudinally into discrete compartments such that an inflated boom will not deflate completely when punctured or damaged.
  • the flotation member preferably has a variable diameter, and variable buoyancy. This permits variation in the height of the flotation member relative to the water surface, to accommodate, for example, different thicknesses of oil layers and the relative speed of the apparatus relative to the water which may vary depending on, for example, the towing vessel and sea conditions.
  • oil containment apparatus comprising a boom having a flotation member, a splashover member pivotally mounted on an upper portion of the boom, the splashover member comprising a pair of angled arms extending outwardly from a pivot connection and along the boom, each arm carrying a buoyant member towards the free end thereof .
  • Each arm may be in the form of a sheet of material .
  • the sheet may be self-supporting but is preferably a flexible membrane or fine mesh net supported by struts or the like.
  • the buoyant members may be discrete members mounted on the angled arms, or may be incorporated into the arms.
  • Figure 1 is a plan view of apparatus for use in separating and retaining oil from the surface of an area of water in accordance with a preferred embodiment of a first aspect of the present invention
  • Figure 2 is a sectional view on line 2 - 2 of Figure l;
  • Figure 3 is a sectional view on line 3 - 3 of Figure 13;
  • Figure 4 is a sectional view of apparatus for use in separating and retaining oil from the surface of an area of water in accordance with a further embodiment of a first aspect of the present invention, corresponding to a view taken on line 3 - 3 of Figure 1 ;
  • Figure 5 is a perspective view of an oil slick containment arrangement in accordance with an embodiment of another aspect of the present invention;
  • Figure 6 is a perspective view of the arrangement of Figure 5 and also illustrates a splashover member; and Figures 7 and 8 are enlarged views of portions of the arrangement of Figure 6.
  • FIGS 1, 2 and 3 of the drawings illustrate apparatus 10 for use in separating and retaining oil from the surface of an area of water in accordance with a preferred embodiment of a first aspect of the present invention.
  • the arrangement 10 includes a buoyant boom 12 comprising a flotation member 13 with a skirt 14 depending therefrom.
  • a tension member 16 extends along the lower edge of the skirt 14 , the ends of the member 16 being adapted to be connected to suitable towing vessels, typically tugs.
  • Figure 1 illustrates the arrangement 10 as it would appear in use, with the boom 12 assuming a near catenary configuration as the arrangement 10 is towed behind a pair of tugs.
  • the tension member 16 tends to pull the lower end of the skirt 14 inwardly and forwardly to assist in gathering oil and oil containing water within the area defined by the boom 12.
  • a containment lagoon 18 is formed rearwardly of a central portion of the boom 12, the lagoon 18 being defined by a further boom 20 having a flotation member 21 and a skirt 22 which depends from the boom 20 and extends parallel to the water surface to attach to the skirt 14, as may be seen in Figure 3 of the drawings.
  • the skirt 22 defines vents which allow water to pass from the lagoon 18.
  • the flotation member 13 is not of constant cross- section, and thus buoyancy, over its whole length, the central portion of the member 13a being of smaller cross- section than the remainder of the member 13.
  • the central portion of the member 13a pierces the surface of the water.
  • the flotation member 13 is pulled beneath the water surface, such that any oil on the surface of the water passes over the member 13 and into the containment lagoon 18/
  • the flotation member central portion 13a includes larger diameter portions 13b which pierce the surface of the water as the apparatus is pulled through the water.
  • the forward end of the skirt 22 is attached to the boom 12, with cords 30 extending from the skirt 22 to the tension member 16 of the skirt 14.
  • a number of cords 32 extend across the boom apex, the cords 32 being arranged in groups, within each group the cords 32 being vertically spaced apart at and around the mean water level .
  • the arrangement 10 is towed behind a pair of tugs such that oil on the surface of the water gathers in the area defined by the boom 12. With forward movement the oil will tend to gather at the central portion of the boom 12, and will then pass over the flotation member 13 and into the lagoon 18.
  • the skirt 22 which extends beneath the lagoon 18 is provided with a number of sub-surface vents (not shown) which allow water, but not oil, to escape from the lagoon 18.
  • the apparatus 10 is towed through oil-contaminated water and a volume of oil is collected in the lagoon 18.
  • oil typically forms a layer around 1 cm thick and this is difficult to recover, without also drawing in a significant volume of water.
  • the apparatus results in the formation of an oil layer in the lagoon 18 which is significantly thicker in the lagoon (3 - 20 cm) , and is relatively easily recovered.
  • the arrangement 80 includes a boom 82 having a flotation member formed of a flexible cylinder 84 which accommodates a plurality of separate longitudinally extending inflatable tubes 86.
  • a skirt 85 (not shown in Figure 6) depends from the cylinder 84.
  • a splashover member 88 (not shown in Figure 5) , as described in greater detail below.
  • the splashover member 88 is mounted on a cable 90 which runs along the upper surface of the boom 82.
  • the member 88 comprises two angled arms 92, 93, each of which comprise a longitudinally extending flexible membrane or fine mesh net 94 and a plurality of radially extending struts 96, and an inflatable floatation tube 98 mounted to the free ends of the rods 96.
  • the connection between the cable 90 and the arms 92, 93 is provided by a joint 100, as illustrated in Figures 7 and 8 of the drawings, comprising a bushing 102 for location over the cable 90 and two sleeves 104, 105 for receiving the ends of the rod stiffeners 96.
  • the arrangement 80 is intended to minimise splashover of oil from the upwind side of the boom 82.
  • the wind acts on the arms 92, 93 and pivots the splashover member 88 such that the floatation tube 98 mounted on the downwind arm 93 rests on the surface of the water.
  • the buoyancy of the tube 98 prevents any further rotation of the member 88, such that the upwind arm 92 extends upwardly of the boom 82, and will remain in this attitude unless the wind direction reverses.
  • the provision of a pivot link between the boom and the splashover member 88 permits the boom 82 and member 88 to move independently such that, for example, a change in attitude of the boom 92 would not affect the member 88.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Removal Of Floating Material (AREA)

Abstract

La présente invention concerne un appareil destiné à séparer et à retenir le pétrole à la surface d'une zone aquifère. Cet appareil comprend un barrage de collecteur (12) remorquable sur l'eau au moyen d'un bateau de remorquage et une zone de rétention à l'arrière du barrage. Une partie du barrage est conçue de manière à permettre l'écoulement du pétrole sur le barrage jusqu'à la zone de rétention. Le pétrole s'accumule dans la zone de rétention et peut être récupéré à partir de ladite zone.
PCT/GB1998/000679 1997-03-06 1998-03-06 Appareil pour la separation et la retention du petrole a la surface d'une zone aquifere Ceased WO1998039520A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU64076/98A AU6407698A (en) 1997-03-06 1998-03-06 Apparatus for use in separating and retaining oil from the surface of an area ofwater

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9704660.1 1997-03-06
GBGB9704660.1A GB9704660D0 (en) 1997-03-06 1997-03-06 Oil-slick containment

Publications (1)

Publication Number Publication Date
WO1998039520A1 true WO1998039520A1 (fr) 1998-09-11

Family

ID=10808808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000679 Ceased WO1998039520A1 (fr) 1997-03-06 1998-03-06 Appareil pour la separation et la retention du petrole a la surface d'une zone aquifere

Country Status (3)

Country Link
AU (1) AU6407698A (fr)
GB (1) GB9704660D0 (fr)
WO (1) WO1998039520A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2232265A1 (es) * 2002-12-23 2005-05-16 Florentino Martin Gonzalez Un sistema de barrera marina anticontaminante de fuel-oil en las playas.
WO2014130259A1 (fr) * 2013-02-21 2014-08-28 Becker William R Élimination du pétrole présent sur une masse d'eau
US9249550B2 (en) 2013-02-21 2016-02-02 William R. Becker Method and apparatus for removing oil from a body of water
IT201700121824A1 (it) * 2017-10-26 2019-04-26 Castalia Operations S R L Dispositivo per la raccolta selettiva di materiale galleggiante
WO2020200846A1 (fr) * 2019-04-02 2020-10-08 Jospa Limited Appareil de remorquage entraîné par les vagues

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1528855A (fr) * 1967-05-02 1968-06-14 Procédé et dispositif de draguage, récupération et décantation simultanés des produits pétroliers et autres liquides en mer
US3650406A (en) * 1970-10-12 1972-03-21 Ocean Systems Oil collection retrieval system
US3792589A (en) * 1972-01-17 1974-02-19 Chevron Res Floating barrier
US3852965A (en) * 1971-12-13 1974-12-10 C Rudd Flotation type water sweep boom and methods
US3886750A (en) * 1970-10-16 1975-06-03 Shell Oil Co Oil containment apparatus
US4096700A (en) * 1975-11-12 1978-06-27 Bridgestone Tire Co., Ltd. Oil boom for damming and collecting a floating oil slick
US4640645A (en) * 1985-09-23 1987-02-03 Shell Oil Company Containment boom system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1528855A (fr) * 1967-05-02 1968-06-14 Procédé et dispositif de draguage, récupération et décantation simultanés des produits pétroliers et autres liquides en mer
US3650406A (en) * 1970-10-12 1972-03-21 Ocean Systems Oil collection retrieval system
US3886750A (en) * 1970-10-16 1975-06-03 Shell Oil Co Oil containment apparatus
US3852965A (en) * 1971-12-13 1974-12-10 C Rudd Flotation type water sweep boom and methods
US3792589A (en) * 1972-01-17 1974-02-19 Chevron Res Floating barrier
US4096700A (en) * 1975-11-12 1978-06-27 Bridgestone Tire Co., Ltd. Oil boom for damming and collecting a floating oil slick
US4640645A (en) * 1985-09-23 1987-02-03 Shell Oil Company Containment boom system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2232265A1 (es) * 2002-12-23 2005-05-16 Florentino Martin Gonzalez Un sistema de barrera marina anticontaminante de fuel-oil en las playas.
WO2014130259A1 (fr) * 2013-02-21 2014-08-28 Becker William R Élimination du pétrole présent sur une masse d'eau
US8911619B2 (en) 2013-02-21 2014-12-16 William R. Becker Method and apparatus for removing oil from a body of water
US9249550B2 (en) 2013-02-21 2016-02-02 William R. Becker Method and apparatus for removing oil from a body of water
IT201700121824A1 (it) * 2017-10-26 2019-04-26 Castalia Operations S R L Dispositivo per la raccolta selettiva di materiale galleggiante
WO2020200846A1 (fr) * 2019-04-02 2020-10-08 Jospa Limited Appareil de remorquage entraîné par les vagues
US12116972B2 (en) 2019-04-02 2024-10-15 Jospa Limited Wave-powered towing apparatus

Also Published As

Publication number Publication date
AU6407698A (en) 1998-09-22
GB9704660D0 (en) 1997-04-23

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