CA2633332C - Mobile fluid storage tank with fluid containment - Google Patents
Mobile fluid storage tank with fluid containment Download PDFInfo
- Publication number
- CA2633332C CA2633332C CA 2633332 CA2633332A CA2633332C CA 2633332 C CA2633332 C CA 2633332C CA 2633332 CA2633332 CA 2633332 CA 2633332 A CA2633332 A CA 2633332A CA 2633332 C CA2633332 C CA 2633332C
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- Prior art keywords
- tank
- fluid
- wall
- mobile storage
- storage tank
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- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/12—Large containers rigid specially adapted for transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/12—Large containers rigid specially adapted for transport
- B65D88/128—Large containers rigid specially adapted for transport tank containers, i.e. containers provided with supporting devices for handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/028—Wall construction hollow-walled, e.g. double-walled with spacers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/24—Spillage-retaining means, e.g. recovery ponds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2590/00—Component parts, details or accessories for large containers
- B65D2590/0091—Ladders
Abstract
A mobile storage tank with fluid containment includes outer and inner tanks, each having a front wall, a rear wall, a pair of opposed side walls and a bottom wall. The outer tank also includes a roof. The front, rear, side and bottom walls of the outer tank are spaced from the corresponding walls of the inner tank, thereby defining a containment space between the outer tank and the inner tank.
Description
Mobile Fluid Storage Tank With Fluid Cont~inment FIELD OF THE INVENTION
[001] The present invention relates generally to mobile storage tanks for storing fluids and the like, and more particularly to mobile storage tanks with a dual tank structure for preventing leaks and for providing secondary containment.
BACKGROUND OF THE INVENTION
[001] The present invention relates generally to mobile storage tanks for storing fluids and the like, and more particularly to mobile storage tanks with a dual tank structure for preventing leaks and for providing secondary containment.
BACKGROUND OF THE INVENTION
[002] Mobile or transportable tanks are used to provide temporary storage and dispensing of fluids, such as fracturing fluids, drilling fluids, gasoline, fluid chemicals, waste fluids or the like at various work sites. These tanks may be towed or carried by large vehicles: to and from the various work sites.
Several of these tanks may be transported to a remote work site to form a temporary tank farm, for example at a well drilling site to provide fluids required for the drilling or the completion of a well. Once at the work site, fluid is transferred into and out of the mobile storage tank via various fluid carrying lines that are connected to ports formed though the side walls of the tank by various different methods, including bulkheads or various other threaded type couplings. Traditionally, to ensure containment of these fluids if the walls of a tank should be compromised and leak, should the tank overflow or should the fluid carrying line couplings fail or leak, a secondary containment system is constructed around the tanks forming the tank farm. This secondary containment system generally consists of a berm formed from the surrounding earth to create an enclosed area, an impervious liner placed on the ground surface covering the entire area and berm, and rig support mats placed on the liner for supporting the tanks. Creating a traditional secondary containment system is very time consuming and expensive. Additionally, a traditional secondary containment system may present additional hazards to workers at the work site.
~
SUMMARY OF THE INVENTION
10031 Accordingly, there is a need for an improved mobile storage tank that does not require the construction of a secondary containment system and which does not include fluid carrying lines connected to ports forrned through the walls of the tank.
[004] The preferred embodiments of the present invention addresses the above-identified need by providing a mobile storage tank with fluid containment having a dual tank construction where an outer tank receives a slightly smaller dimensioned inner tank, and an improved fluid carrying line architecture.
10051 An object of the present invention is to provide a mobile storage tank with fluid containment to remove the need to construct a secondary containment around the mobile storage tank when in service on a work site.
[006] An additional object of the present invention is to provide a mobile storage tank with an improved dual tank construction that permits the inner tank to overflow into an internal fluid containment area.
[007] A further object of the present invention is to provide a mobile storage tank with an improved fluid recirculation system to retain solids admixed with stored fluid in suspension with the fluid.
[008] Yet another object of the present invention is to provide a mobile storage tank with a vortex breaker to prevent the mixing of air into a fluid flowing through a discharge fluid line.
[009] Another object of the present invention is to provide a mobile storage tank with a fluid recirculation system that prevents back siphoning of the fluid through a recirculation system.
II
[0010] Another object of the present invention is to provide mobile storage tank having a covered landing that can be joined to an adj*ent mobile storage tank of the present invention.
[0011] To achieve these and other objects, in accordance with one aspect the invention provides a mobile storage tank including a frame for supporting the mobile storage tank, an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with the outer front and rear walls, a roof in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, and an outer bottom wall in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with the inner front wall and the inner rear wall, and an inner bottom wall in contact with each of the inner front wall, the inner rear wall, and the pair of opposing inner side walls, the inner front wall, the inner rear wall, the pair of opposing inner side walls, and the inner bottom wall being spaced from the outer front wall, the outer rear wall, the pair of opposing outer side walls, and the outer bottom wall respectively, thereby defining a containment space between the outer tank and the inner tank, and the inner tank being in fluidic communication with the containment space for receiving overflow fluid from the inner tank should a predetennined capacity of the inner tank be exceeded.
[0012] In another aspect of the invention, the inner tank includes an upper edge spaced from the roof so as to provide the fluidic communication.
[0013] In accordance with another aspect of the invention, the mobile storage tank includes one or more separate fluid lines communicating the inner tank to an exterior of the outer tank, wherein the one or more fluid lines do not extend through any of the inner walls and any of the outer walls.
[0014] The inner bottom wall has a central portion that slopeg in a downwardly direction from the inner rear wall towards the inner frqnt wall, and a pair of opposed upwardly angled side portions.
Several of these tanks may be transported to a remote work site to form a temporary tank farm, for example at a well drilling site to provide fluids required for the drilling or the completion of a well. Once at the work site, fluid is transferred into and out of the mobile storage tank via various fluid carrying lines that are connected to ports formed though the side walls of the tank by various different methods, including bulkheads or various other threaded type couplings. Traditionally, to ensure containment of these fluids if the walls of a tank should be compromised and leak, should the tank overflow or should the fluid carrying line couplings fail or leak, a secondary containment system is constructed around the tanks forming the tank farm. This secondary containment system generally consists of a berm formed from the surrounding earth to create an enclosed area, an impervious liner placed on the ground surface covering the entire area and berm, and rig support mats placed on the liner for supporting the tanks. Creating a traditional secondary containment system is very time consuming and expensive. Additionally, a traditional secondary containment system may present additional hazards to workers at the work site.
~
SUMMARY OF THE INVENTION
10031 Accordingly, there is a need for an improved mobile storage tank that does not require the construction of a secondary containment system and which does not include fluid carrying lines connected to ports forrned through the walls of the tank.
[004] The preferred embodiments of the present invention addresses the above-identified need by providing a mobile storage tank with fluid containment having a dual tank construction where an outer tank receives a slightly smaller dimensioned inner tank, and an improved fluid carrying line architecture.
10051 An object of the present invention is to provide a mobile storage tank with fluid containment to remove the need to construct a secondary containment around the mobile storage tank when in service on a work site.
[006] An additional object of the present invention is to provide a mobile storage tank with an improved dual tank construction that permits the inner tank to overflow into an internal fluid containment area.
[007] A further object of the present invention is to provide a mobile storage tank with an improved fluid recirculation system to retain solids admixed with stored fluid in suspension with the fluid.
[008] Yet another object of the present invention is to provide a mobile storage tank with a vortex breaker to prevent the mixing of air into a fluid flowing through a discharge fluid line.
[009] Another object of the present invention is to provide a mobile storage tank with a fluid recirculation system that prevents back siphoning of the fluid through a recirculation system.
II
[0010] Another object of the present invention is to provide mobile storage tank having a covered landing that can be joined to an adj*ent mobile storage tank of the present invention.
[0011] To achieve these and other objects, in accordance with one aspect the invention provides a mobile storage tank including a frame for supporting the mobile storage tank, an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with the outer front and rear walls, a roof in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, and an outer bottom wall in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with the inner front wall and the inner rear wall, and an inner bottom wall in contact with each of the inner front wall, the inner rear wall, and the pair of opposing inner side walls, the inner front wall, the inner rear wall, the pair of opposing inner side walls, and the inner bottom wall being spaced from the outer front wall, the outer rear wall, the pair of opposing outer side walls, and the outer bottom wall respectively, thereby defining a containment space between the outer tank and the inner tank, and the inner tank being in fluidic communication with the containment space for receiving overflow fluid from the inner tank should a predetennined capacity of the inner tank be exceeded.
[0012] In another aspect of the invention, the inner tank includes an upper edge spaced from the roof so as to provide the fluidic communication.
[0013] In accordance with another aspect of the invention, the mobile storage tank includes one or more separate fluid lines communicating the inner tank to an exterior of the outer tank, wherein the one or more fluid lines do not extend through any of the inner walls and any of the outer walls.
[0014] The inner bottom wall has a central portion that slopeg in a downwardly direction from the inner rear wall towards the inner frqnt wall, and a pair of opposed upwardly angled side portions.
3 [0015] The mobile storage tank includes a fluid recirculationmeans for recirculating fluid contained within the inner tank.
[0016] In accordance with another aspect of the invention, the mobile storage tank includes an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with the outer front and rear walls, a roof in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, and an outer bottom wall in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with the inner front wall and the inner rear wall, and an inner bottom wall in contact with each of the inner front wall, the inner rear wall, and the pair of opposing inner side walls, the inner front wall, the inner rear wall, the pair of opposing inner side walls, and the inner bottom wall being spaced from the outer front wall, the outer rear wall, the pair of opposing outer side walls, and the outer bottom wall respectively, thereby defining a containment space between the outer tank and the inner tank, the inner tank being in fluidic communication with the containment space for receiving overflow fluid from the inner tank should a predetermined capacity of the inner tank be exceeded, and one or more separate fluid lines communicating the inner tank to an exterior of the outer tank, wherein the one or more fluid lines do not extend through any of the inner walls and any of the outer walls.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The invention is described in greater detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention and wherein [0018] Figure 1 is a front perspective view of a mobile storage tank in accordance with the present invention;
[0019] Figure 2 is a rear perspective view of the mobile storage tank of FIG.
1;
[0016] In accordance with another aspect of the invention, the mobile storage tank includes an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with the outer front and rear walls, a roof in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, and an outer bottom wall in contact with each of the outer front wall, the outer rear wall and the pair of opposing outer side walls, an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with the inner front wall and the inner rear wall, and an inner bottom wall in contact with each of the inner front wall, the inner rear wall, and the pair of opposing inner side walls, the inner front wall, the inner rear wall, the pair of opposing inner side walls, and the inner bottom wall being spaced from the outer front wall, the outer rear wall, the pair of opposing outer side walls, and the outer bottom wall respectively, thereby defining a containment space between the outer tank and the inner tank, the inner tank being in fluidic communication with the containment space for receiving overflow fluid from the inner tank should a predetermined capacity of the inner tank be exceeded, and one or more separate fluid lines communicating the inner tank to an exterior of the outer tank, wherein the one or more fluid lines do not extend through any of the inner walls and any of the outer walls.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The invention is described in greater detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention and wherein [0018] Figure 1 is a front perspective view of a mobile storage tank in accordance with the present invention;
[0019] Figure 2 is a rear perspective view of the mobile storage tank of FIG.
1;
4 [0020] Figure 3 is a longitudinal-sectional view taken generally along line 3-3 of FIG.
1;
[0021] Figure 4 is a cross section taken generally along line 4-4 of FIG. 3;
[0022] Figure 5 is a cross section taken along line 5-5 of FIG. 4;
[0023] Figure 6 is an enlarged view of a portion of FIG. 4; and [0024] Figure 7 is an enlarged view of a portion of FIG. 3.
DETAILED DESCRIPTION OF THE INVENTION
[0025] Referring to the drawings, reference numeral 10 generally designates the mobile fluid storage tank of the present invention for holding fracturing fluid, drilling fluid, gasoline, fluid chemicals, waste fluids or the like at various work sites. The mobile storage tank 10 includes an outer tank 14 and an inner tank 16 slightly smaller than the outer tank and wholly positioned within the interior of the outer tank. The outer tank 14 includes a vertical front wall 18, an vertical rear wall 20, a pair of opposing vertical side walls 22 and 24 each having ends in contact with the front and rear walls, and an outer bottom wall 26 in contact with each of the front and rear walls and the side walls. A roof 28 is attached to the upper ends of the front wall 18, rear wall 20, and side walls 22 and 24. Together, the walls and roof of the auter tank 14 define an interior space into which the inner tank 16 is positioned. The inner tank 16 includes a vertical front wall 30, a vertical rear wall 32, a pair of opposing vertical sidewalls 34 and 36 each having ends in contact with the front and rear walls thereof, and an inner bottom wall 38 in contact with each of the front and rear walls and inner side walls thereof.
[0026] The walls of the inner tank 16 are spaced from the wols of the outer tank 14 creating a containment area 40 between the wall surfaces for receiving fluid from the inner tank should the inner tank fail or overflow. The containment area 40 also provides for a buffer zone between the outer tank walls and the inner tank walls against impact damage from the exte~ior of the mobile storage tank 10. The upper edge 42 of the inner tank 16 is sp~.ced downwardly from the upper edge 44 or roof 28 of the outer tank 14 to permit overflow fluid from the inner tank to be received and retained by the containment area 40. The upper edge 42 of the inner tank 16 may be spaced intermittently or continuously therealong from the upper edge 44 or roof 28 of the outer tank 14.
[0027] Referring to FIGS. 4 and 5, at least a longitudinal center portion 46 of the bottom 38 of the inner tank 16 slopes downward in a direction from the rear wall 32 towards the front wall 30. Two upwardly angled side portions 48 are positioned along opposite sides of the center portion 46. Although the side portions 48 of the bottom 38 are shown to be planar, the mobile storage 10 tank of the present invention is not limited to this design.
[0028] As can be seen in FIGS. 4 and 6 the inner tank 16 is supported above the bottom wall 26 of the outer tank 14 by a plurality of spaced horizontal support members 50 that span between the bottom wall 26 of the outer tank and the bottom wall 38 of the inner tank. Additionally, as can be seen in FIGS. 3 and 7, the vertical walls 30-36 of the inner tank 16 are supported in a spaced relation to the vertical walls 18-24 of the outer tank by a plurality of spaced vertical support members 52.
[0029] As best shown in FIGS. 1 and 5, the mobile storage tank 10 includes a landing 54 that extends outwardly from an exterior surface of the front wall 18 of the outer tank 14 approximate a bottom end thereof. The landing 54 is covered by a roof extension 56. The landing 54 comprises an open top tray 58 having a grated walkway 60 supported above the bottom of the tray, such that any fluid that falls on the landing will be collected by the tray below the walkway. The landing may include a drain to permit draining of fluid collected in the tray 58.
A walkway extension comprising a metal flap 62 is pilvotally attached to the landing 58 to engage a landing of an adjacent mobile storage tank 10 in a tank farm to permit a worker to easily walk between tanks.
[0030] Mounted on the landing 54 is a roof access ladder 64i, The roof access ladder 64 allows an individual to access the roof 28 and a plorality of roof hatches positioned along the length of the roof. The roof hatcihes 66 are thirty-six inch worker access hatches that permit a worker to enter the mobile storage tank 10 for inspection and cleaning purposes.
[0031] As seen in FIGS. 1 and 2, the mobile storage tank 10 includes one or more leak inspection ports 68 on the front or rear walls 18 and 20 of the outer tank 14 approximate the bottom of the tank. Each leak inspection port 68 is constructed by two-inch pipe that may be welded through the wall to which it is attached in order to allow access to the containment area 40. A valve is attached to the pipe to open and close the pipe to permit inspection for fluid within the containment area 40. The presence of fluid in the area 40 is an indication of either an overflow condition or a failure of the inner tank 16.
The construction of the inspection ports 68 is not limited to a two-inch pipe with a valve. Various pipes of various diameters or other structures permitting access to the containment area 40 may be substituted in place of the two inch pipe and valve to achieve the same operational characteristics to the inspection port 68.
[0032] With reference to FIGS. 1, 3 and 5, a plurality of fluid lines 70, 72 and 74 permit fluid flow into an out of the inner tank 16. The purpose of each fluid line is described in greater detail below. The fluid lines 70, 72 and 74 are formed in a generally looped fashion to run from within the inner tank 16 and up and over the front walls 30 and 18 of the inner tank 16 and outer tank 14 respectively to an exterior location along the front wall of the outer tank where they each are accessible from the landing 54. The fluid lines 70, 72 and 74 are supported by a plurality of brackets 76 attached to the front wall 14 of the outer tank 14. Similar brackets (not shown) support the fluid lines 70, 72 and 74 inside the mobile storage tank 10.
[0033] Fluid line 70 is a four inch, generally U-shaped dischatge line or suction line used to draw fluid from the inner tank 16 for distributipn. With reference to FIG. 5, the suction end or drawing end of fluid line 701 is positioned within a recessed sump area 76 formed in the bottom wall 38 bf the inner tank 16, which ensures a compleie draw of fluid from the innor tank. The sump area 76 is about ten inches in diameter. To prevent a vortex from forming during withdrawal of fluid from the inner tank 16 which would introduce unwanted air into the fluid and possibly result in pump cavitation, a vortex breaker 78 is attached to the fluid line 70 at a distance from the drawing end. The vortex breaker 78 is a thin flange that extends radially outward from the outer periphery of the fluid line 70. The vortex breaker 78 is located approximately three inches above the bottom wall 38 of the inner tank. Attached to the discharge end of fluid line 70 is a gangway fitting 80 permitting attachment of several hoses in various configurations according to a desired fluid flow path at the work site. A siphon breaker 82 is attached to the fluid line 70 within the bent portion 84 thereof to prevent a siphon forming that could result in emptying the inner tank 16. The siphon breaker 82 includes a valve 86 that is operable by a control line 88 to open the fluid line 70 to the atmosphere to prevent a siphon from forming or to break an active siphon. Alteinatively, the valve 86 could be an automatically controlled valve that could operate based upon various measured flow properties through the fluid line.
[0034] Fluid line 72 is a three inch recirculation pipe used to recirculate fluid to the inner tank 16. Similarly, a gangway fitting 80 is attac'hed to the exposed end 90 of the fluid line 72 to permit attachment of several hoses in various configurations according to a desired fluid flow path at the work site. The fluid line 72 loops over the front walls 18 and 30 of the outer and inner tanks 14 and 16, and then runs along the roof 28 towards the rear wa1132 of the inner tank where it extends vertically downward and terminates at distribution manifold 92. The distribution manifold 92 extends laterally across the rear wa1132 proximate the bottom wall 38. The manifold 92 splits the fluid flow in fluid line 72 to various outlet ports 94. A plurality of various length discharge lines 96 may be connected to the outlet ports 94 in a desired configuration to distribute recirculated fluid within the inner tank 16 at various positions along the length of the bottom wall 38. In this manner, as floid is recirculated to the inner tank 16, it is discharged into the inner tank at di0erent locations creating a turbulent, swirling flow within the fluid contained in the inner tank to maintain heavy solids mixed with the fluid in suspension and preventing the solids from settling on the bottom of the inner tank. This is especially important when the fluid being stored within the mobile storage tank 10 is a drilling fluid. To prevent a back siphon through fluid line 72, the discharge lines 96 are angled downwardly in a direction from rear to front. The discharge lines 96 may be angled at a slope of one inch for about every twelve feet in run length.
[0035] Fluid line 74 is a three inch fluid fill pipe used to unload fluid from tankers into the mobile storage tank 10. A hose coupling 98 is connected to end 100 of the fluid line 74 to permit connection to the tanker via a hose (not shown).
The fluid line 72 loops over the front walls 18 and 30 of the outer and inner tanks 14 and 16, and then extends downwardly along the front wall 30 approximately twelve inches where it terminates at an open end.
[0036] With further reference to FIG. 1, a display panel 102 is mounted to the front wall 18 of the outer tank 14. The display panel 102 is configured to display various monitored fluid conditions within the inner tank 16, such as fluid level or temperature. Fluid level within the inner tank 16 may be measured by a probe (not shown) inside the tank which goes from the top of the tank to the bottom. Along the probe there is a plurality of switches about every quarter of an inch. A float slidable on the probe is free to rise and fall with the level of the fluid and is fitted with a magnet. As the float slides over the probe it actuates the switches and sends the information to the display panel 102 by an optical fiber cable.
[0037] Additionally, the mobile storage tank 10 may be fitted with explosion proof electrical connections, such as 110V electrical plugs that are connectable to an electrical generator or a drilling rig to provide a source of power to the mobile storage tank 10. An explosion proof fluorescent light may also be provided to illuminate an area around the mobile storage tank 10.
[0038] As best shown in FIGS. 1 and 5, the entire structure of the mobile storage tank is supported on a frame 104. The frame 104 may be a typical skid frame used with various types of transportable container systems widely used and known by one of ordinary skill in the art. Alternatively, the frame 104 could be a chassis frame that is rollably supported by wheel and axle assembly that may be towed by a transport vehicle.
[0039] As further shown, in FIGS. 1 and 2, a first set of barrier pylons 106 are mounted on opposite sides of the front end of the frame 104, and a second set of barrier pylons 108 are mounted on opposite sides of the back end of the frame. The barrier pylons 106 and 108 protect the front and rear of the mobile storage tank 10 from impact with vehicles, and help protect workers within the confines of the pylons.
[0040] Should the walls 18-26 of the outer tank 14 become damaged, i.e.
punctured, the mobile storage tank 10 in accordance with the present invention will not leak due to the buffer zone created by the containment area 40. Likewise, should the walls 30-38 of inner tank 16 become punctured, fluid within the inner tank will be captured and retained within the containment area 40.
Moreover, should the inner tank 16 be filled beyond capacity, the overflow will not spill out the mobile storage, but rather will be captured within the containment area 40. Additionally, there is no risk of fluid leaking from fluid line coupling failures that are made through the walls of the mobile storage tank 10, as all of the fluid carrying lines do not penetrate any of the walls of the mobile fluid storage tank. The improved structure of the mobile storage tank 10 in accordance with the principles of the present invention removes the need to create secondary containment systems around the mobile storage tank when in service at a work site, thus reducing the costs of constructing and operating a mobile tank farm.
1;
[0021] Figure 4 is a cross section taken generally along line 4-4 of FIG. 3;
[0022] Figure 5 is a cross section taken along line 5-5 of FIG. 4;
[0023] Figure 6 is an enlarged view of a portion of FIG. 4; and [0024] Figure 7 is an enlarged view of a portion of FIG. 3.
DETAILED DESCRIPTION OF THE INVENTION
[0025] Referring to the drawings, reference numeral 10 generally designates the mobile fluid storage tank of the present invention for holding fracturing fluid, drilling fluid, gasoline, fluid chemicals, waste fluids or the like at various work sites. The mobile storage tank 10 includes an outer tank 14 and an inner tank 16 slightly smaller than the outer tank and wholly positioned within the interior of the outer tank. The outer tank 14 includes a vertical front wall 18, an vertical rear wall 20, a pair of opposing vertical side walls 22 and 24 each having ends in contact with the front and rear walls, and an outer bottom wall 26 in contact with each of the front and rear walls and the side walls. A roof 28 is attached to the upper ends of the front wall 18, rear wall 20, and side walls 22 and 24. Together, the walls and roof of the auter tank 14 define an interior space into which the inner tank 16 is positioned. The inner tank 16 includes a vertical front wall 30, a vertical rear wall 32, a pair of opposing vertical sidewalls 34 and 36 each having ends in contact with the front and rear walls thereof, and an inner bottom wall 38 in contact with each of the front and rear walls and inner side walls thereof.
[0026] The walls of the inner tank 16 are spaced from the wols of the outer tank 14 creating a containment area 40 between the wall surfaces for receiving fluid from the inner tank should the inner tank fail or overflow. The containment area 40 also provides for a buffer zone between the outer tank walls and the inner tank walls against impact damage from the exte~ior of the mobile storage tank 10. The upper edge 42 of the inner tank 16 is sp~.ced downwardly from the upper edge 44 or roof 28 of the outer tank 14 to permit overflow fluid from the inner tank to be received and retained by the containment area 40. The upper edge 42 of the inner tank 16 may be spaced intermittently or continuously therealong from the upper edge 44 or roof 28 of the outer tank 14.
[0027] Referring to FIGS. 4 and 5, at least a longitudinal center portion 46 of the bottom 38 of the inner tank 16 slopes downward in a direction from the rear wall 32 towards the front wall 30. Two upwardly angled side portions 48 are positioned along opposite sides of the center portion 46. Although the side portions 48 of the bottom 38 are shown to be planar, the mobile storage 10 tank of the present invention is not limited to this design.
[0028] As can be seen in FIGS. 4 and 6 the inner tank 16 is supported above the bottom wall 26 of the outer tank 14 by a plurality of spaced horizontal support members 50 that span between the bottom wall 26 of the outer tank and the bottom wall 38 of the inner tank. Additionally, as can be seen in FIGS. 3 and 7, the vertical walls 30-36 of the inner tank 16 are supported in a spaced relation to the vertical walls 18-24 of the outer tank by a plurality of spaced vertical support members 52.
[0029] As best shown in FIGS. 1 and 5, the mobile storage tank 10 includes a landing 54 that extends outwardly from an exterior surface of the front wall 18 of the outer tank 14 approximate a bottom end thereof. The landing 54 is covered by a roof extension 56. The landing 54 comprises an open top tray 58 having a grated walkway 60 supported above the bottom of the tray, such that any fluid that falls on the landing will be collected by the tray below the walkway. The landing may include a drain to permit draining of fluid collected in the tray 58.
A walkway extension comprising a metal flap 62 is pilvotally attached to the landing 58 to engage a landing of an adjacent mobile storage tank 10 in a tank farm to permit a worker to easily walk between tanks.
[0030] Mounted on the landing 54 is a roof access ladder 64i, The roof access ladder 64 allows an individual to access the roof 28 and a plorality of roof hatches positioned along the length of the roof. The roof hatcihes 66 are thirty-six inch worker access hatches that permit a worker to enter the mobile storage tank 10 for inspection and cleaning purposes.
[0031] As seen in FIGS. 1 and 2, the mobile storage tank 10 includes one or more leak inspection ports 68 on the front or rear walls 18 and 20 of the outer tank 14 approximate the bottom of the tank. Each leak inspection port 68 is constructed by two-inch pipe that may be welded through the wall to which it is attached in order to allow access to the containment area 40. A valve is attached to the pipe to open and close the pipe to permit inspection for fluid within the containment area 40. The presence of fluid in the area 40 is an indication of either an overflow condition or a failure of the inner tank 16.
The construction of the inspection ports 68 is not limited to a two-inch pipe with a valve. Various pipes of various diameters or other structures permitting access to the containment area 40 may be substituted in place of the two inch pipe and valve to achieve the same operational characteristics to the inspection port 68.
[0032] With reference to FIGS. 1, 3 and 5, a plurality of fluid lines 70, 72 and 74 permit fluid flow into an out of the inner tank 16. The purpose of each fluid line is described in greater detail below. The fluid lines 70, 72 and 74 are formed in a generally looped fashion to run from within the inner tank 16 and up and over the front walls 30 and 18 of the inner tank 16 and outer tank 14 respectively to an exterior location along the front wall of the outer tank where they each are accessible from the landing 54. The fluid lines 70, 72 and 74 are supported by a plurality of brackets 76 attached to the front wall 14 of the outer tank 14. Similar brackets (not shown) support the fluid lines 70, 72 and 74 inside the mobile storage tank 10.
[0033] Fluid line 70 is a four inch, generally U-shaped dischatge line or suction line used to draw fluid from the inner tank 16 for distributipn. With reference to FIG. 5, the suction end or drawing end of fluid line 701 is positioned within a recessed sump area 76 formed in the bottom wall 38 bf the inner tank 16, which ensures a compleie draw of fluid from the innor tank. The sump area 76 is about ten inches in diameter. To prevent a vortex from forming during withdrawal of fluid from the inner tank 16 which would introduce unwanted air into the fluid and possibly result in pump cavitation, a vortex breaker 78 is attached to the fluid line 70 at a distance from the drawing end. The vortex breaker 78 is a thin flange that extends radially outward from the outer periphery of the fluid line 70. The vortex breaker 78 is located approximately three inches above the bottom wall 38 of the inner tank. Attached to the discharge end of fluid line 70 is a gangway fitting 80 permitting attachment of several hoses in various configurations according to a desired fluid flow path at the work site. A siphon breaker 82 is attached to the fluid line 70 within the bent portion 84 thereof to prevent a siphon forming that could result in emptying the inner tank 16. The siphon breaker 82 includes a valve 86 that is operable by a control line 88 to open the fluid line 70 to the atmosphere to prevent a siphon from forming or to break an active siphon. Alteinatively, the valve 86 could be an automatically controlled valve that could operate based upon various measured flow properties through the fluid line.
[0034] Fluid line 72 is a three inch recirculation pipe used to recirculate fluid to the inner tank 16. Similarly, a gangway fitting 80 is attac'hed to the exposed end 90 of the fluid line 72 to permit attachment of several hoses in various configurations according to a desired fluid flow path at the work site. The fluid line 72 loops over the front walls 18 and 30 of the outer and inner tanks 14 and 16, and then runs along the roof 28 towards the rear wa1132 of the inner tank where it extends vertically downward and terminates at distribution manifold 92. The distribution manifold 92 extends laterally across the rear wa1132 proximate the bottom wall 38. The manifold 92 splits the fluid flow in fluid line 72 to various outlet ports 94. A plurality of various length discharge lines 96 may be connected to the outlet ports 94 in a desired configuration to distribute recirculated fluid within the inner tank 16 at various positions along the length of the bottom wall 38. In this manner, as floid is recirculated to the inner tank 16, it is discharged into the inner tank at di0erent locations creating a turbulent, swirling flow within the fluid contained in the inner tank to maintain heavy solids mixed with the fluid in suspension and preventing the solids from settling on the bottom of the inner tank. This is especially important when the fluid being stored within the mobile storage tank 10 is a drilling fluid. To prevent a back siphon through fluid line 72, the discharge lines 96 are angled downwardly in a direction from rear to front. The discharge lines 96 may be angled at a slope of one inch for about every twelve feet in run length.
[0035] Fluid line 74 is a three inch fluid fill pipe used to unload fluid from tankers into the mobile storage tank 10. A hose coupling 98 is connected to end 100 of the fluid line 74 to permit connection to the tanker via a hose (not shown).
The fluid line 72 loops over the front walls 18 and 30 of the outer and inner tanks 14 and 16, and then extends downwardly along the front wall 30 approximately twelve inches where it terminates at an open end.
[0036] With further reference to FIG. 1, a display panel 102 is mounted to the front wall 18 of the outer tank 14. The display panel 102 is configured to display various monitored fluid conditions within the inner tank 16, such as fluid level or temperature. Fluid level within the inner tank 16 may be measured by a probe (not shown) inside the tank which goes from the top of the tank to the bottom. Along the probe there is a plurality of switches about every quarter of an inch. A float slidable on the probe is free to rise and fall with the level of the fluid and is fitted with a magnet. As the float slides over the probe it actuates the switches and sends the information to the display panel 102 by an optical fiber cable.
[0037] Additionally, the mobile storage tank 10 may be fitted with explosion proof electrical connections, such as 110V electrical plugs that are connectable to an electrical generator or a drilling rig to provide a source of power to the mobile storage tank 10. An explosion proof fluorescent light may also be provided to illuminate an area around the mobile storage tank 10.
[0038] As best shown in FIGS. 1 and 5, the entire structure of the mobile storage tank is supported on a frame 104. The frame 104 may be a typical skid frame used with various types of transportable container systems widely used and known by one of ordinary skill in the art. Alternatively, the frame 104 could be a chassis frame that is rollably supported by wheel and axle assembly that may be towed by a transport vehicle.
[0039] As further shown, in FIGS. 1 and 2, a first set of barrier pylons 106 are mounted on opposite sides of the front end of the frame 104, and a second set of barrier pylons 108 are mounted on opposite sides of the back end of the frame. The barrier pylons 106 and 108 protect the front and rear of the mobile storage tank 10 from impact with vehicles, and help protect workers within the confines of the pylons.
[0040] Should the walls 18-26 of the outer tank 14 become damaged, i.e.
punctured, the mobile storage tank 10 in accordance with the present invention will not leak due to the buffer zone created by the containment area 40. Likewise, should the walls 30-38 of inner tank 16 become punctured, fluid within the inner tank will be captured and retained within the containment area 40.
Moreover, should the inner tank 16 be filled beyond capacity, the overflow will not spill out the mobile storage, but rather will be captured within the containment area 40. Additionally, there is no risk of fluid leaking from fluid line coupling failures that are made through the walls of the mobile storage tank 10, as all of the fluid carrying lines do not penetrate any of the walls of the mobile fluid storage tank. The improved structure of the mobile storage tank 10 in accordance with the principles of the present invention removes the need to create secondary containment systems around the mobile storage tank when in service at a work site, thus reducing the costs of constructing and operating a mobile tank farm.
Claims (19)
1. A mobile storage tank with fluid containment comprising:
a frame for supporting the mobile storage tank;
an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with said outer front and rear walls, a roof in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls, and an outer bottom wall in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls;
an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with said inner front wall and said inner rear wall, and an inner bottom wall in contact with each of said inner front wall, said inner rear wall, and said pair of opposing inner side walls;
said inner bottom wall comprising a central portion that slopes in a downward direction from said inner rear wall towards said inner front wall, and a pair of opposed upwardly angled side portions;
a sump portion in said inner bottom wall at a bottom end of said central portion of said inner bottom wall;
said inner front wall, said inner rear wall, said pair of opposing inner side walls, and said inner bottom wall being spaced from said outer front wall, said outer rear wall, said pair of opposing outer side walls, and said outer bottom wall respectively, thereby defining a containment space between said outer tank and said inner tank; and said inner tank being in fluid communication with said containment space for receiving overflow fluid from said inner tank should a predetermined capacity of said inner tank be exceeded.
a frame for supporting the mobile storage tank;
an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with said outer front and rear walls, a roof in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls, and an outer bottom wall in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls;
an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with said inner front wall and said inner rear wall, and an inner bottom wall in contact with each of said inner front wall, said inner rear wall, and said pair of opposing inner side walls;
said inner bottom wall comprising a central portion that slopes in a downward direction from said inner rear wall towards said inner front wall, and a pair of opposed upwardly angled side portions;
a sump portion in said inner bottom wall at a bottom end of said central portion of said inner bottom wall;
said inner front wall, said inner rear wall, said pair of opposing inner side walls, and said inner bottom wall being spaced from said outer front wall, said outer rear wall, said pair of opposing outer side walls, and said outer bottom wall respectively, thereby defining a containment space between said outer tank and said inner tank; and said inner tank being in fluid communication with said containment space for receiving overflow fluid from said inner tank should a predetermined capacity of said inner tank be exceeded.
2. The mobile storage tank of claim 1, wherein said inner tank includes an upper edge that is spaced from said roof so as to provide said fluid communication.
3. The mobile storage tank of claim 2, wherein said upper edge is spaced from said roof continuously along said upper edge.
4. The mobile storage tank of claim 1, further comprising:
one or more separate fluid lines communicating the inner tank to an exterior of said outer tank, wherein said one or more fluid lines extend from within said inner tank through said roof of the outer tank and up and over the front walls of the inner and outer tanks.
one or more separate fluid lines communicating the inner tank to an exterior of said outer tank, wherein said one or more fluid lines extend from within said inner tank through said roof of the outer tank and up and over the front walls of the inner and outer tanks.
5. The mobile storage tank of claim 1, further comprising:
a fluid recirculation means for recirculating fluid contained within said inner tank.
a fluid recirculation means for recirculating fluid contained within said inner tank.
6. The mobile storage tank of claim 1, further comprising:
an inspection outlet formed through at least one of said outer front wall, outer rear wall, and said pair of opposing outer side walls proximate said outer bottom wall permitting inspection of said containment space for fluid.
an inspection outlet formed through at least one of said outer front wall, outer rear wall, and said pair of opposing outer side walls proximate said outer bottom wall permitting inspection of said containment space for fluid.
7. The mobile storage tank of claim 1, further comprising:
a landing extending outwardly from an exterior surface of said outer front wall, said landing comprising a shallow tray having an open top; and an open mesh grating covering said open top.
a landing extending outwardly from an exterior surface of said outer front wall, said landing comprising a shallow tray having an open top; and an open mesh grating covering said open top.
8. The mobile storage tank of claim 7, further comprising:
a walkway pivotally attached to said landing between a stowed position and a use position for engagement with a landing of an adjacent mobile storage tank.
a walkway pivotally attached to said landing between a stowed position and a use position for engagement with a landing of an adjacent mobile storage tank.
9. A mobile storage tank with fluid containment, comprising:
an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with said outer front and rear walls, a roof in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls, and an outer bottom wall in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls;
an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with said inner front wall and said inner rear wall, and an inner bottom wall in contact with each of said inner front wall, said inner rear wall, and said pair of opposing inner side walls;
said inner bottom wall comprising a central portion that slopes in a downward direction from said inner rear wall towards said inner front wall, and a pair of opposed upwardly angled side portions;
a sump portion in said inner bottom wall at a bottom end of said central portion of said inner bottom wall;
said inner front wall, said inner rear wall, said pair of opposing inner side walls, and said inner bottom wall being spaced from said outer front wall, said outer rear wall, said pair of opposing outer side walls, and said outer bottom wall respectively, thereby defining a containment space between said outer tank and said inner tank;
said inner tank being in fluid communication with said containment space for receiving overflow fluid from said inner tank should a predetermined capacity of said inner tank be exceeded; and one or more separate fluid lines communicating the inner tank to an exterior of said outer tank, wherein said one or more fluid lines extend from within said inner tank through said roof of the outer tank and up and over the front walls of the inner and outer tanks.
an outer tank having an outer front wall, an outer rear wall, a pair of opposing outer side walls each having ends in contact with said outer front and rear walls, a roof in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls, and an outer bottom wall in contact with each of said outer front wall, said outer rear wall and said pair of opposing outer side walls;
an inner tank having an inner front wall, an inner rear wall, a pair of opposing inner side walls each having ends in contact with said inner front wall and said inner rear wall, and an inner bottom wall in contact with each of said inner front wall, said inner rear wall, and said pair of opposing inner side walls;
said inner bottom wall comprising a central portion that slopes in a downward direction from said inner rear wall towards said inner front wall, and a pair of opposed upwardly angled side portions;
a sump portion in said inner bottom wall at a bottom end of said central portion of said inner bottom wall;
said inner front wall, said inner rear wall, said pair of opposing inner side walls, and said inner bottom wall being spaced from said outer front wall, said outer rear wall, said pair of opposing outer side walls, and said outer bottom wall respectively, thereby defining a containment space between said outer tank and said inner tank;
said inner tank being in fluid communication with said containment space for receiving overflow fluid from said inner tank should a predetermined capacity of said inner tank be exceeded; and one or more separate fluid lines communicating the inner tank to an exterior of said outer tank, wherein said one or more fluid lines extend from within said inner tank through said roof of the outer tank and up and over the front walls of the inner and outer tanks.
10. The mobile storage tank of claim 9, further comprising:
a sump portion defined by said inner bottom wall;
one of said one or more fluid lines being a fluid discharge line for drawing fluid from said inner tank, a pickup end of said fluid discharge line being positioned within said sump portion; and a vortex breaker comprising a flange extending from the periphery of said fluid discharge line at a spaced position from said pickup end.
a sump portion defined by said inner bottom wall;
one of said one or more fluid lines being a fluid discharge line for drawing fluid from said inner tank, a pickup end of said fluid discharge line being positioned within said sump portion; and a vortex breaker comprising a flange extending from the periphery of said fluid discharge line at a spaced position from said pickup end.
11. The mobile storage tank of claim 9, further comprising:
means for recirculating fluid within said inner tank.
means for recirculating fluid within said inner tank.
12. The mobile storage tank of claim 9, further comprising:
an inspection outlet in at least one of said outer front wall, outer rear wall, and said pair of opposing outer side walls proximate said outer bottom wall permitting inspection of said containment space for fluid.
an inspection outlet in at least one of said outer front wall, outer rear wall, and said pair of opposing outer side walls proximate said outer bottom wall permitting inspection of said containment space for fluid.
13. The mobile storage tank of claim 9, further comprising:
a landing extending outwardly from an exterior surface of said outer front wall, said landing comprising a shallow tray having an open top; and an open mesh grating covering said open top.
a landing extending outwardly from an exterior surface of said outer front wall, said landing comprising a shallow tray having an open top; and an open mesh grating covering said open top.
14. The mobile storage tank of claim 9, further comprising:
a walkway pivotally attached to said landing between a stowed position and a use position for engagement with a landing of an adjacent mobile storage tank.
a walkway pivotally attached to said landing between a stowed position and a use position for engagement with a landing of an adjacent mobile storage tank.
15. The mobile storage tank of claim 9, wherein said inner bottom wall comprises:
a central portion that slopes in a downwardly direction from said inner rear wall towards said inner front wall; and a pair of opposed upwardly angled side portions.
a central portion that slopes in a downwardly direction from said inner rear wall towards said inner front wall; and a pair of opposed upwardly angled side portions.
16. The mobile storage tank of claim 1 or 9, including a plurality of fluid lines communicating an interior of the inner tank to an exterior of the outer tank, wherein said fluid lines extend from within said inner tank through said roof of the outer tank and up and over the front walls of the inner and outer tanks, one of said fluid lines being a recirculation pipe.
17. The mobile storage tank of claim 16, wherein said recirculation pipe extends from outside the front wall of the outer tank, through the roof of the outer tank, along the inside of the roof of the outer tank to the inner rear wall of the inner tank and then downwardly to the inner bottom wall of the inner tank.
18. The mobile storage tank of claim 17 including a distribution manifold at a bottom end of the recirculation pipe extending laterally across the rear wall proximate the bottom wall of the inner tank; and a plurality of outlet ports in the manifold for recirculating fluid in the inner tank.
19. The mobile storage tank of claim 18 including discharge lines connected to said outlet ports and angled downwardly in a direction from the rear to the front of the inner tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2633332 CA2633332C (en) | 2008-06-04 | 2008-06-04 | Mobile fluid storage tank with fluid containment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2633332 CA2633332C (en) | 2008-06-04 | 2008-06-04 | Mobile fluid storage tank with fluid containment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2633332A1 CA2633332A1 (en) | 2008-12-29 |
| CA2633332C true CA2633332C (en) | 2011-03-01 |
Family
ID=40177956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2633332 Expired - Fee Related CA2633332C (en) | 2008-06-04 | 2008-06-04 | Mobile fluid storage tank with fluid containment |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2633332C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2911852C (en) | 2013-06-13 | 2021-09-21 | Force Energy Management Corporation | Apparatuses and methods for supplying natural gas to a frac water heater |
| US9057517B1 (en) | 2014-08-19 | 2015-06-16 | Adler Hot Oil Service, LLC | Dual fuel burner |
| US10767859B2 (en) | 2014-08-19 | 2020-09-08 | Adler Hot Oil Service, LLC | Wellhead gas heater |
| US10625991B2 (en) | 2016-04-15 | 2020-04-21 | Kvaerner As | Deck hoist tractor, rescue chute and tote tank |
-
2008
- 2008-06-04 CA CA 2633332 patent/CA2633332C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2633332A1 (en) | 2008-12-29 |
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