US20120051841A1 - Subsea capture system and method of using same - Google Patents
Subsea capture system and method of using same Download PDFInfo
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- US20120051841A1 US20120051841A1 US13/218,747 US201113218747A US2012051841A1 US 20120051841 A1 US20120051841 A1 US 20120051841A1 US 201113218747 A US201113218747 A US 201113218747A US 2012051841 A1 US2012051841 A1 US 2012051841A1
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- Prior art keywords
- leak
- subsea
- capture
- capture devices
- leak sources
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/0122—Collecting oil or the like from a submerged leakage
Abstract
A subsea capture system, comprising a plurality of leak sources on a sea floor, the leak sources having a density less than sea water; and a plurality of capture devices located above each of the plurality of leak sources, the capture devices comprising a funnel shape comprising a large bottom opening inlet and tapering to a small top opening outlet
Description
- This application claims the benefit of U.S. Provisional Application No. 61/378,243 filed Aug. 30, 2010, the entire disclosure of which is hereby incorporated by reference.
- When oil and gas is spilled into the sea, for example from a leaking tanker ship, a leaking pipeline, from oil seeping from an underground formation, or from oil flowing from a subsea wellhead or blowout preventer, there is a desire to collect the oil and gas and contain and transport or otherwise dispose of the oil and gas to prevent environmental damage to the sea and nearby coastlines. Various systems and methods of collecting spilled oil and gas are known in the art and set forth below:
- U.S. Pat. No. 4,405,258 discloses a method for storing a lighter-than-water fluid, e.g., oil, produced from the blowout of an offshore subsea well. The method includes the steps of deploying a containment dome in shallow water near the location of the seabed where the containment dome is to be located. The containment dome as an upper expanded dome-like fluid impervious membrane, a fluid impervious hollow peripheral ring attached to the periphery of the membrane to provide a depending bag-like container, and discrete water drainage means within the bag-like container for connection to pump conduit means therefrom. Wet sand from the seabed is then pumped into the bag-like container, and water is then drained from the wet sand through the water drainage means so as to provide a body of drained sand disposed within the bag-like container and providing a hollow peripheral ring as a hollow peripheral torus acting as a self-supporting structure and as an anchor for the dome-like structural unit. The dome is then charged with a buoyant amount of air and the buoyed dome is floated out to the site where the dome is to be deployed. It is then submerged by controllably releasing the air while substantially simultaneously filling the dome with water, thereby sinking the dome until the lighter-than-water fluid is captured within the dome, while such fluid substantially simultaneously displaces water from within the dome. U.S. Pat. No. 4,405,258 is herein incorporated by reference in its entirety.
- U.S. Pat. No. 4,643,612 discloses an oil storage barge having a concave bottom is adapted to be anchored over a subsea well or pipeline that is leaking oil. Flexible skirts extend to the ocean floor, and oil that is trapped under the barge may be stored in the barge or then transferred to another vessel. U.S. Pat. No. 4,643,612 is herein incorporated by reference in its entirety.
- U.S. Pat. No. 5,114,273 discloses a protective device installed to or around an offshore drilling platform for oil or gas and the device when in operation to encircle or enclose the platform with a floating containment device and attached oil containment curtain hanging from the device to the ocean floor. The pollution containment device to be submerged normally and activated to the surface when needed. This device will entrap offshore platform pollutants in a short amount of time with a minimum amount of effort and will maintain a clean environment. Other methods of offshore platform pollution containment devices are shown, including permanent non-moving oil pollution containment barriers and activated barriers that operate internally and externally of the oil platform to form an all encompassing barrier from the ocean floor to above the water surface to hold an oil spill to the platform area. U.S. Pat. No. 5,114,273 is herein incorporated by reference in its entirety.
- U.S. Pat. No. 5,213,444 discloses an oil/gas collector/separator for recovery of oil leaking, for example, from an offshore or underwater oil well. The separator is floated over the point of the leak and tethered in place so as to receive oil/gas floating, or forced under pressure, toward the water surface from either a broken or leaking oil well casing, line, or sunken ship. The separator is provided with a downwardly extending skirt to contain the oil/gas which floats or is forced upward into a dome wherein the gas is separated from the oil/water, with the gas being flared (burned) at the top of the dome, and the oil is separated from water and pumped to a point of use. Since the density of oil is less than that of water it can be easily separated from any water entering the dome. U.S. Pat. No. 5,213,444 is herein incorporated by reference in its entirety.
- U.S. Pat. No. 6,592,299 discloses a method of detecting and locating fresh water springs at sea essentially by taking salinity measurements and by methods and installations for collecting the fresh water. The collection installations comprise an immersed bell-shaped reservoir containing and trapping the fresh water in its top portion, and a pumping system for taking fresh water and delivering the fresh water via a delivery pipe, characterized in that the circumference of the bottom end of the reservoir and/or the circumference of the bottom end of a chimney inside the reservoir and open at its top end and surrounding the fresh water resurgence in part and preferably in full, follow(s) closely the outline of the relief of the bottom of the sea so as to provide leakproofing between the circumference(s) and the bottom of the sea. U.S. Pat. No. 6,592,299 is herein incorporated by reference in its entirety.
- There is a need in the art for one or more of the following:
- Improved systems and methods for collecting spilled oil and gas from a marine environment, for example collecting spilled oil and gas spilling from a number of locations;
- Improved systems and methods for collecting oil and gas spilling from multiple subsea wells;
- Improved systems and methods for collecting oil and gas spilling from a subsurface formation located beneath a body of water; and/or
- Improved systems and methods for collecting oil and gas spilling from a subsurface formation located beneath a body of water, and then burning the gas and containing the oil in a surface vessel.
- One aspect of the invention provides a subsea capture system, comprising a plurality of leak sources on a sea floor, the leak sources having a density less than sea water; and a plurality of capture devices located above the plurality of leak sources, the capture devices comprising a funnel shape comprising a large bottom opening inlet and tapering to a small top opening outlet.
- Another aspect of the invention provides a method of capturing subsea leaks, comprising locating a plurality of leak sources on a sea floor, the leak sources having a density less than sea water; installing a capture device above each of the plurality of leak sources, the capture device comprising an opening at a bottom of the capture device to receive the leak source within the capture device; and collecting the leak source at one or more collection points located at a top of the capture device.
- So that the features and advantages of the present invention can be understood in detail, a more particular description of the invention may be had by reference to the embodiments thereof that are illustrated in the appended drawings. These drawings are used to illustrate only typical embodiments of this invention, and are not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments. The figures are not necessarily to scale and certain features and certain views of the figures may be shown exaggerated in scale or in schematic in the interest of clarity and conciseness.
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FIG. 1 is a schematic diagram depicting a wellsite positioned above a subsea reservoir, the wellsite having a containment system with free-standing collectors in accordance with an aspect of the present invention. -
FIGS. 2A-2B are schematic diagrams depicting a wellsite positioned above a subsea reservoir, the wellsite having a containment system with anchored collectors in accordance with an aspect of the present invention. -
FIG. 3 is a flow chart depicting a method of containment. - Some embodiments of the invention are shown in the above-identified figures and described in detail below. Embodiments are described with reference to certain features and techniques for containing fluids released into the sea.
-
FIG. 1 : -
FIG. 1 is a schematic diagram depicting awellsite 100 positioned above areservoir 102. Thewellsite 100 may be provided with acontainment system 103 for capturing fluids released or spilled into thesea 106. Thewellsite 100 may have asurface system 104 floating on thesea 106, and asubsea system 105 therebelow. Thesubsea system 105 may recover fluids from thereservoir 102, and pass such fluids to thesurface system 104. - The
surface system 104 may be provided for collecting, distributing and/or processing the fluids retrieved from thesubsea system 105 and/or thereservoir 102. Ariser 108 may extend below thesurface system 104 to a location proximate a sea floor (or mud line) 110. As shown inFIG. 1 , a subsea end of theriser 108 may be secured to asuction pile 111 positioned in the sea floor (or mud line) 110. Ariser connector 109 may be provided to secure theriser 108 in position. In some cases, the subsea end of theriser 108 may be positioned about thesubsea system 105 for receiving fluid therefrom, as will be described more fully herein. - The
subsea system 105 may have one or more blow-out preventers (BOP) 112 positioned at a top end of one ormore wellbores 114. Thewellbore 114 may extend through thesea floor 110 and into thereservoir 102. TheBOP 112 may be in fluid communication with thewellbore 114 for receiving the fluids (e.g., gas, hydrocarbons, water, etc.) from thereservoir 102. A manifold 116 may be fluidly connected between theBOP 112 and theriser 108 to facilitate and/or manipulate the flow of fluids therebetween. - The
riser 108 may receive fluids generated from thereservoir 102. Theriser 108 may be, for example, a tubular member for passing fluid received from theBOP 112 and/ormanifold 116 to thesurface system 104. Atrap 117 may be provided at the subsea end of theriser 108 to collect fluids and/or solids. Apump 118 may be provided within theriser 108 to selectively draw fluid from theBOP 112 and into theriser 108. - Fluid may be passed from the
riser 108 to thesurface system 104. Thesurface system 104 may have asurface collector 122 for receiving the fluids. Thesurface collector 122 may be any suitable system for collecting, storing, separating, and/or transporting the collected fluids. Thesurface collector 122 may be, for example, a separator that separates the collected fluid into components, such as gas, water, liquid hydrocarbons and the like. Thesurface collector 122 may also be a conventional collector capable of storing fluid at or near the surface. - The components of the fluid stored in the
surface collector 122 may optionally be removed, for example, by burning gas with aflare 124, by transporting liquids to avessel 120 via tubing (or off-take line) 126 and the like. Thetubing 126 may be used to fluidly connect thesurface collector 122 to thevessel 120. One ormore surface collectors 122,risers 108,vessels 120 andtubings 126 may be provided. - In some embodiments, suitable collection funnels, risers, and separators that may be used with the invention are disclosed in co-pending U.S. provisional patent applications 61/376,534, having attorney docket number TH4086; 61/376,542 having attorney docket number TH4085; 61/376,595 having attorney docket number TH4088, which are all herein incorporated by reference in their entirety.
- From time to time, fluid from the
reservoir 102 or a section of thewellbores 114 may escape into thesea 106. For example awellsite leak 130A from awellbore 114A,B and/or from aBOP 112 may allow fluid to escape from thesubsea system 105 and into thesea 106 as fluid is produced from thereservoir 102. Further, areservoir leak 130B, for example fluids seeping through cracks or fissures in thesea floor 110, may allow fluid to escape directly from thereservoir 102 or a section of the well 114, through thesea floor 110 and into thesea 106. Thecontainment system 103 may be employed to recapture fluid released by one or more wellsite/reservoir leaks 130A and/or 130B. Thecontainment system 103 is preferably a mobile system that may be transported to thewellsite 100, and deployed into position to capture fluid from the wellsite/reservoir leaks 130A and/or 130B. - The
containment system 103 may have one or more subsea (or leak)collectors 132 and one ormore flow lines 134. One or moresubsea collectors 132 may be positioned a distance above the wellsite/reservoir leaks 130A and/or 130B to collect fluids therefrom. The collected fluid may travel from thesubsea collector 132 to thesurface collector 122 via theflow lines 134. The flow lines may be fluidly connected directly to thesurface collector 122 and/or connected to theriser 108 for the fluids to flow to thesurface collector 122 as shown inFIG. 1 . -
FIGS. 2A & 2B : -
FIGS. 2A and 2B are schematic diagrams depicting various configurations of acontainment system 203 in operation at thewellsite 200. Thewellsite 200 hasmultiple wellbores BOPs reservoir 102. Each of theBOPs wellsite leak 130A. Areservoir leak 130B may also have been produced from thereservoir 102 and through thesea floor 110. Thewellbores 114A,B,BOPs 112A,B,reservoir 102,sea floor 110 and wellsite/reservoir leaks 130A,B may be the same as those described with respect toFIG. 1 , except thatmultiple wellsites 114A,B andBOPs 112A,B are provided. - The
containment system 203 includes asurface system 204 and asubsea system 205, similar to those ofFIG. 1 , except that fluid from the wellsite/reservoir leaks 130A,B are transferred fromsubsea collectors 232 and to ariser 208 a byflow lines 134. Like thecontainment system 103 ofFIG. 1 , fluid captured from the wellsite/reservoir leaks 130A,B may be passed to aconventional surface collector 122 for storage, separation and/or processing. The collected fluid may optionally be passed to a vessel, such asvessel 120 ofFIG. 1 , for storage and/or transport. - As shown in
FIGS. 2A & 2B , thesubsea collectors 132 are free-standing, or unsecured at a lower end thereof. Alternatively,collectors 132 may be sealed and/or anchored to theBOP 112, or alternatively anchored to thesea floor 110 such as with clump weights or driven or suction piles. - In the configuration of
FIG. 2A , all of thesubsea collectors 232 are fluidly connected to ariser 208 a by theflow lines 134. Thesubsea collectors 232 ofFIG. 2A may be the same as thesubsea collectors 132 ofFIG. 1 . As shown in the Figure thesubsea collectors 232 are anchored to thesubsea floor 110. These anchored subsea collector(s) 232 may be any suitable device for capturing fluid from the wellsite/reservoir leaks 130A and/or 130B. Thesubsea collectors 232 may be specifically designed and deployed for collecting fluid from a variety of wellsite/reservoir leaks 130A and/or 130B. - As shown in
FIG. 2A , thesubsea collector 232 may include a non-sealed open funnel (or water cap) 210 allowing free passage of fluid therein. Thefunnels 210 each have anopen bottom 212, acylindrical body 213, atapered top 214, and anexit end 215 configured to facilitate upward movement of the fluid into theflow lines 134. Theopen bottom 212 may be large enough to capture, and/or enclose the fluids escaping from one or more wellsite/reservoir leaks 130A and/or 130B. Theexit end 215 of thefunnel 210 may couple to theflow lines 134, using any suitable method. Thefunnel 210 may be constructed of any suitable material such as metal, plastic, fabric, elastomer, a combination thereof, and the like. - In other embodiments, the
subsea collector 232 may include a sealed funnel or flange connected directly to a BOP, or sealed around the perimeter of a well or a leak, for example with an annular suction pile. - As shown in
FIG. 2A , thefunnel 210 may be secured to the subsea floor by one or more clump weights (or anchors) 220 coupled to thefunnel 210 by one ormore tethers 222. While the configurations of FIGS. 1 and 2A-2B depict asubsea collector 232 having anopen bottom 212 positioned a distance above a wellsite/reservoir leak 130A,B, thesubsea collector 232 may be positioned over wellsite equipment, such as theBOPs 112A and/or 112B, to create a seal thereon and draw fluid therefrom. In another example, thefunnels 210 may be forced into the mud orsea floor 110 to create a seal therein, and to prevent release of fluid into thesea 106, or directly connected to an annular pile to create a seal around the BOPs or leak sources. - The
exit end 215 at the top of each of thesubsea collector 232 is depicted inFIG. 2A as being connected tocorresponding flow lines 134. Avalve 226 is optionally provided between thesubsea collectors 232 and theflow lines 134 to control the flow of the fluids from thesubsea collectors 232 and into theflow lines 134. Theflow lines 134 may be angled up from thesubsea collectors 232, and toward the surface to define an upward path for the flow of fluid therethrough. Theflow lines 134 may be any suitable flow path for allowing fluids to travel from thesubsea collectors 232 to theriser 208 a, and for supporting thesubsea collectors 232 in position about the wellsite/reservoir leaks 130A and/or 130B. For example, theflow lines 134 may be a flex hose, a plurality of pipes, a tubing, a canvass tube, a fabric tube, a metal tube, a composite tube, a plastic tube, a combination thereof, and the like. Supports (not shown), such as buoys, may optionally be provided to support the subsea collectors. - The
flow lines 134 may be assembled before, during and/or after deployment of thecontainment system 203 to thewellsite 200. Theflow lines 134 and thesubsea collector 232 may be deployed into position by an ROV, a diver, a submarine and/or other means (not shown). Theflow lines 134 may further include any number of components, such as flanges, blinds, storage spools, connectors and the like, configured to facilitate the routing, flexibility, operation, and/or transport of theriser 208 a and/orflow lines 134. - In an example where the
flow lines 134 are flexible lines, such as flex hose, flexible tubing, and/or tubing, theflow lines 134 may be stored proximate theriser 208 a during transport, and extended into position for operation when desired. In an example where theflow lines 134 are hard pipes, theriser 203 may be provided with pre-drilled holes and/or connectors, such asconnector 221, for receiving theflow lines 134. Theriser 203 may also be pre-assembled and/or permanently piped with theflow lines 134 prior to installation. Any suitable method may be used to couple theflow lines 134 to theriser 208 a, such as connectors, adhesives, bonds, welds and the like. - A
surface end 202 of each of theflow lines 134 may be fluidly coupled to theriser 208 a as shown inFIG. 2A , or positioned insideriser 208 b as shown inFIG. 2B . Theriser 208 a may be a conventional riser for passing fluid to thesurface collector 122. Theriser 208 a may be adapted to receive theflow lines 134, for example from about 2 to about 10 or more, such as 3 to 6 flow lines. Optionally, theriser 208 a may be provided with openings, pipings, flanges or other features at various depths to facilitate receipt of theflow lines 134. Such features may facilitate the pre-assembly and/or installation of thecontainment system 203 at thewellsite 200. Theriser 203 may also be provided with valves, pumps or other devices (not shown) to manipulate the flow of fluid therethrough. For example, the riser 208 may have a valve (not shown) that may be activated to initiate the flow of fluid therethrough. - In the configuration of
FIG. 2B , thecontainment system 203 has a modifiedriser 208 b. Theriser 208 b ofFIG. 2B may have anopen bottom 242 for receiving theupper end 202 of theflow lines 134. Theflow lines 134 may be fluidly coupled to theriser 208 b by placing theflow lines 134 into theopen bottom 242 of theriser 208 b. Any suitable method may be used to secure theflow lines 134 within theopen bottom 242 of the modifiedriser 208 b such as using connectors, adhesives, bonds, welds and the like. -
FIGS. 1 , 2A-2B depict specific configurations ofcontainment systems containment systems BOPs manifolds 116, and/or other features as shown. One or more valves (e.g., 226) may be positioned about thecontainment system 203 to control the flow of the fluids captured by thesubsea collector 232. The one or more valves may be any suitable valves or combination thereof for selectively controlling flow and/or pressure in the containment system, such as control valves, gate valves, check valves, and the like. For example,valve 226 may be a check valve configured to allow one way flow from thesubsea collector 232 to thesurface collector 122. - The
subsea collector 232,riser 208 a,b and/orflow lines 134 may have other devices for enhancing the operation thereof, such as one ormore collector valves 218 to control fluid flow, one ormore pumps 223 to facilitate movement of the fluid, one ormore gauges 224 to take subsea measurements (e.g., temperature, pressure, flow rate, etc.), a manifold (e.g., 116 ofFIG. 1 ) to manipulate fluid flow, and the like. Buoys and/or weights (not shown) may also be positioned about components of the wellsite, such as theflow lines 134,risers 208 a,b and/orsubsea collectors 232, to control the location thereof. -
FIG. 3 : -
FIG. 3 is a flow chart depicting amethod 303 of containing one or more leaks (e.g., wellsite/reservoir leaks 130A,B). The method involves positioning (350) a containment system (e.g., 103, 203) about a leak at a wellsite (e.g., 100, 200). The step of positioning may involve, for example, deploying (352) a surface collector (e.g., 122) to the wellsite, positioning (354) at least one subsea collector (e.g., 132, 232) of the containment system over the leak, for example 2 or more, positioning (356) a riser (e.g., 108, 208 a,b) in fluid communication with the surface collector, fluidly connecting (358) the subsea collector(s) and the riser via at least one flow line (e.g., 134). - The
method 303 further involves passing (360) fluid from the leak to the surface collector via the containment system. The fluid may then be separated (362) in the surface collector, and passed (364) from the surface collector to a vessel. These steps may be performed in any order, and repeated as desired. - It will be understood from the foregoing description that various modifications and changes may be made in the preferred and alternative embodiments of the present invention without departing from its true spirit. For example, one or
more flow lines 134 may be used to fluidly connect one or more subsea collectors (e.g., 132, 232) to one or more risers (e.g., 108, 208 a,b), surface collectors (e.g., 122) and/or other devices (e.g., vessel 120) for passing fluid thereto. Thecontainment systems FIG. 1 , or anchored to the sea floor as shown inFIGS. 2A and 2B . - In one embodiment, there is disclosed a subsea capture system, comprising a plurality of leak sources on a sea floor, the leak sources having a density less than sea water; and a plurality of capture devices located above the plurality of leak sources, the capture devices comprising a funnel shape comprising a large bottom opening inlet and tapering to a small top opening outlet. In some embodiments, the leak sources comprise oil. In some embodiments, the leak sources comprise natural gas. In some embodiments, each of the capture devices is connected to a flow line. In some embodiments, each of the capture devices is connected to a flow line, and each of the flow lines are connected to a riser. In some embodiments, the plurality of leak sources comprise from about 3 to about 10 leak sources. In some embodiments, the capture device comprises a major dimension across a base of the device from about 0.5 meters to about 10 meters. In some embodiments, the capture device comprises a diameter across a base of the device from about 1 meters to about 5 meters. In some embodiments, the capture device comprises a flexible sheet material. In some embodiments, at least one capture device is fluidly sealed to a blow out preventer. In some embodiments, the system also includes a separator fluidly connected to the capture devices. In some embodiments, the system also includes a liquid storage vessel fluidly connected to the capture devices.
- In one embodiment, there is disclosed a method of capturing subsea leaks, comprising locating a plurality of leak sources on a sea floor, the leak sources having a density less than sea water; installing a capture device above each of the plurality of leak sources, the capture device comprising an opening at a bottom of the capture device to receive the leak source within the capture device; and collecting the leak source at a more collection points located at a top of the capture device.
- This description is intended for purposes of illustration only and should not be construed in a limiting sense. The scope of this invention should be determined only by the language of the claims that follow. The term “comprising” within the claims is intended to mean “including at least” such that the recited listing of elements in a claim are an open group. “A,” “an” and other singular terms are intended to include the plural forms thereof unless specifically excluded.
Claims (15)
1. A subsea capture system, comprising:
a plurality of leak sources on a sea floor, the leak source fluids having a density less than sea water; and
a plurality of capture devices located above the plurality of leak sources, the capture devices comprising a funnel shape comprising a large bottom opening inlet and tapering to a small top opening outlet.
2. The system of claim 1 , wherein the leak sources comprise oil.
3. The system of claim 1 , wherein the leak sources comprise natural gas.
4. The system of claim 1 , wherein the leak sources comprise fluid from a hydrocarbon reservoir.
5. The system of claim 1 , wherein each of the capture devices is connected to a flow line.
6. The system of claim 1 , wherein each of the capture devices is connected to a flow line, and each of the flow lines are connected to a riser.
7. The system of claim 1 , wherein the plurality of leak sources comprise from about 3 to about 10 leak sources.
8. The system of claim 1 , wherein the capture device comprises a major dimension across a base of the device from about 0.5 meters to about 10 meters.
9. The system of claim 1 , wherein the capture device comprises a diameter across a base of the device from about 1 meters to about 5 meters.
10. The system of claim 1 , wherein the capture device comprises a flexible sheet material.
11. The system of claim 1 , wherein at least one capture device is fluidly sealed or partially sealed to enclose a leak source.
12. The system of claim 1 , wherein at least one capture device is fluidly sealed to a blow out preventer.
13. The system of claim 1 , further comprising a separator fluidly connected to the capture devices.
14. The system of claim 1 , further comprising a liquid storage vessel fluidly connected to the capture devices.
15. A method of capturing subsea leaks, comprising:
locating a plurality of leak sources on a sea floor, the leak source fluids having a density less than sea water;
installing capture devices above the plurality of leak sources, the capture devices comprising an opening at a bottom of the capture device to receive the leak source within the capture device; and
collecting the leak source at one or more collection points located at a top of the capture devices.
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US13/218,747 US20120051841A1 (en) | 2010-08-30 | 2011-08-26 | Subsea capture system and method of using same |
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US37824310P | 2010-08-30 | 2010-08-30 | |
US13/218,747 US20120051841A1 (en) | 2010-08-30 | 2011-08-26 | Subsea capture system and method of using same |
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