• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    technical system, method and uses for dosing at least one liquid treatment medium in injection water to an injection well. the present invention relates to a technical system (2; 2 '), method and uses for dosing at least one liquid treatment medium (12) in injection water (16) to an injection well (22), the technical system (2; 2 ') comprising: - a submerged line (14; 14') for transporting injection water (16) from a loading site (20; 48) to injection water (16 ); and - at least one liquid-sealed storage unit (10) containing at least one liquid treatment medium (12). the distinguishing feature is that the at least one storage unit (10) is structured as a volumetrically flexible unit; - wherein said storage unit (10) is placed under water (6); and - wherein said storage unit (10) is connected, by fluid communication, to the submerged line (14; 14 ') for the dosage of the liquid treatment medium (12) into the injection water (16) to the injection well (22).
    公开号:BR112013018450B1
    申请号:R112013018450-7
    申请日:2011-12-19
    公开日:2020-09-29
    发明作者:Helge Lunde；David Pinchin
    申请人:Seabox As；
    IPC主号:
    专利说明:

    Field of the Invention
    [001] The invention relates to a technical system, a method and also two uses for dosing at least one liquid treatment medium in injection water into an injection well and, preferably, in a flow of injection water to an injection well.
    [002] Said dosing is carried out under water and directly or indirectly inside a submerged line that carries the injection water forward to the injection well. Background of the invention
    [003] The background of the invention concerns problems with the prior art in the context of water injection in underground hydrocarbon reservoirs to increase the degree of recovery of such reservoirs, the so-called secondary recovery. Water injection, or water flow, is the most common method for increasing the degree of recovery of crude oil from a reservoir. During such a water injection, the objective is to maintain the pressure in the reservoir and simultaneously force the crude oil out of the reservoir through at least one well-positioned production downstream of a water flow front.
    [004] Further development of such a secondary recovery method is usually called tertiary recovery. Such tertiary recovery may comprise, among other things, mixing one or more chemicals, thus making the injection water available, with one or more advantageous properties before the injection water flows through the injection well and additionally into the interior of an underground oil reservoir. In this context, it is common, for example, to mix active surface agents, called surfactants ("surfactants"), in the injection water, thereby improving the water washing properties in the reservoir. Such surface active agents reduce the surface tension of the crude oil, so that the crude oil becomes more mobile and easier to wash out of the reservoir through an injection water front. In contrast, known types of surface active agents are available and used in this context. Prior art and disadvantages
    [005] When recovering crude oil from an underground marine reservoir, it is common to pump injection water upward from a nearby water source, for example, surrounding seawater, and forward to a facility of surface. Such an installation may consist of a fixed-bottom platform or a floating installation, for example, a floating platform or a production vessel. In the surface installation, the injection water will typically be subjected to various forms of additional treatment, including various filtration and chemical treatments. During tertiary recovery, at least one liquid / chemical treatment medium can also be added to the injection water, thereby improving the properties of the water before it flows through the injection well and the underground reservoir.
    [006] The treatment of injection water over a sea surface installation is fraught with several technical, practical and economic disadvantages. The biggest disadvantage, however, is the erection of the surface installation itself. If you are able to avoid using a surface installation for various marine injection water treatments, this would in itself bring great technical, practical and economic benefits. In doing so, smaller and / or complex oil fields that are not interesting and / or impossible to produce, as today, would become profitable, among other things.
    [007] The use of a sea surface installation also implies that various equipment, materials, and treatment / chemical products have to be transported to and from, and possibly have to be located on, the installation itself. The reason this occurs is that such a surface installation has limited storage capacity and weight. Such weight and storage capacity is also applicable to equipment, materials and treatment media / chemicals for the treatment of injection water. This implies that offshore surface installations are, in general, fraught with significant logistical and storage problems.
    [008] During the injection of water from such a marine surface installation, it is common to use water flow rates in the order of several hundred m3 / hour. If a liquid surfactant is added to the injection water at a concentration of, for example, 0.5 to 3 percent by volume of the injection water flow rate, the need may arise, by installing, to store several hundreds of m3 / week of liquid products. This will obviously pose a problem in terms of both logistics and storage at the facility.
    [009] Therefore, and for the reasons presented above, it would be very advantageous if the liquid / chemical treatment medium, being also possible other means and equipment related to injection, could be placed under water, for example, in an ocean bed or in the bottom of a lake, river or delta. In doing so, an individual would not be burdened with the same weight and space limitations that apply to offshore surface installations.
    [0010] In this context, it is known from the document in WO 2004/090284 A1, the use of an apparatus positioned under water for the treatment of injection water. The apparatus comprises at least one receptacle that contains at least one type of water-soluble solid-state chemical. Upon contact with the injection water, the said solid-state chemical will gradually dissolve and mix with the injection water. Then, the finally treated injection water can be pumped down into an injection well and out into an associated reservoir.
    [0011] Document No. WO 2010/031804 A2 discloses an injection system in which a liquid gel to be dosed on the upper side in an injection line to reduce turbulent flow and drag in the injection line.
    [0012] U.S. No. 7,448,404 B2 discloses seabed storage storage for crude oil, including a storage unit in the form of an oil-proof and waterproof fabric like a flexible balloon. Purpose of the invention
    [0013] The primary objective of the invention is to avoid or reduce the disadvantages cited above from the prior art, or at least provide a useful alternative to the prior art in a context of secondary recovery and, particularly, tertiary recovery, of crude oil from reservoirs underground.
    [0014] Another objective of the invention is to provide a technical solution to reduce, at least, some of the technical, practical and cost-related disadvantages associated with the injection of water from a sea surface installation.
    [0015] A more specific objective of the invention is to be able to place the liquid treatment medium / chemical products for the injection water, being possible, also, other equipment and means related to the injection, under water, for example, in a bed ocean or at the bottom of a lake, river or delta. This will allow the weight and space limitations on the sea surface installation to be reduced. General description of how the objectives are achieved
    [0016] The objectives are achieved by virtue of characteristics in the description below and in the subsequent claims.
    [0017] According to a first aspect of the invention, a technical system for dosing at least one of the liquid treatment means in injection water to an injection well is provided, the technical system comprising: - a submerged line for transporting injection water from a loading site to the injection water; and - at least one liquid-sealed storage unit containing said at least one liquid treatment medium. The distinguishing feature of the technical system is that at least one liquid-sealed storage unit is structured as a volumetrically flexible unit or variable unit; - wherein said storage unit is placed under water; and - in which said storage unit is connected, in a fluid communication manner, to the submerged line for the dosage of the liquid treatment medium in the injection water to the injection well.
    [0018] Said storage unit has to be volumetrically flexible / variable to prevent the unit from floating when, during use, the liquid treatment medium is extracted from the storage unit, but also to allow a new treatment to be filled in the storage unit.
    [0019] By using such a submerged storage unit, it avoids using, for example, a surface installation for the storage and dosing of the liquid treatment medium in the injection water. In doing so, the aforementioned technical, practical and cost-related disadvantages associated with transporting, storing and dosing said treatment medium in the injection water from such a surface installation are also avoided or reduced. Furthermore, this can contribute to making oil fields smaller and / or complexes profitable, as mentioned above.
    [0020] Furthermore, the present technical system comprises various connection equipment, for example, valves, couplings, flanges, seals / gaskets, connection lines and hoses, to connect, in fluid communication, to at least one storage unit to the submerged line. The technical system can also comprise various activation equipment, for example, an actuator, and also one or more means of pumping, several regulation equipment, one or more control units and monitoring equipment possible to activate, pump, regulate , control and possibly monitor, respectively, the discharge of at least one liquid treatment medium from said storage unit. Such equipment can also be used to activate, regulate, control and possibly monitor the dosage of said treatment medium in the injection water to the injection well. In addition, the technical system may comprise various injection equipment for injecting, under pressure, the liquid treatment medium into the injection water, while the injection water will more likely have a higher liquid pressure than the liquid pressure in the injection water. treatment medium from the storage unit. Said equipment must be considered as prior art and is not discussed in more detail in this document. In addition, the technical system can be associated with a remote maritime or onshore host installation for remote control of the technical system, including the transmission of control signals, signal monitoring and possible work energy for the equipment associated with the system. As an alternative or addition, the technical system can be structured so as to be more or less autonomous, for example, due to the system being provided with several means to control and activate the activation equipment, regulation equipment, control units and possible monitoring equipment associated with the system. In this context, the technical system may also comprise means of communication for various cable or wireless signals between the storage unit and a remote offshore or onshore installation. For example, it can deal with the transmission of regular signals that report the situation and condition of the technical system or transmission of program changes and / or program updates to an electronic control system for the present technical system. In addition, the technical system can also be associated with various auxiliary equipment to perform, among other things, service work on a technical system, or on equipment associated with the system. Such auxiliary equipment may also comprise ROV-based equipment, in which an unmanned underwater vehicle ("ROV") performs private service work by means of remote control from a host vessel on the surface. In the latter case, the particular equipment associated with the present technical system must also be structured for cooperation with said ROV-based equipment.
    [0021] Furthermore, and advantageously, said storage unit in the technical system can be placed on or in a water bottom, for example, in an ocean bed or at the bottom of a lake, river or delta. In this context, the storage unit can possibly be placed on a suitable base.
    [0022] In a first embodiment, the said storage unit can be composed of a storage tank in the form of a bag formed from a flexible material. Such bag-shaped storage tank is foldable and expandable and will decrease or increase in volume, respectively, according to a liquid treatment medium and extracted or filled inside, respectively, the bag-shaped storage tank.
    [0023] Furthermore, the flexible material can comprise at least one of the following materials: a plastic material; a rubber material; an elastomer material; and a textile material coated with a plasmid. Therefore, the storage tank can comprise, among other things, reinforced PVC materials, neoprene rubber or similar materials advantageously structured with high wear resistance.
    [0024] You are known to use such flexible storage tanks on the surface for other purposes, for example, for batch storage of fuel, drinking water, rainwater, contaminated water, liquid pollutants or fluidized waste products . In relation to fluidized waste products, it is also known, in the document in WO 1999/046474, to place such a flexible and expandable storage tank in an ocean bed to sediment particulate material from a drilling flow emanating from an underwater well.
    [0025] In a second embodiment, said storage unit can be composed of a cylindrical storage tank that comprises a rigid and cylindrical hull. The interior of the hull is provided so that at least one movable lid is connected, in a leak-free manner, to the hull, whose lid is structured in a way that allows it to move in a longitudinal direction in the cylindrical hull.
    [0026] In a variant, this cylindrical hull can be arranged resting vertically in the water. The interior of the hull is equipped with a movable top cover connected, in a leak-free manner, to the hull that rests vertically, whose lid is structured in a way that allows it to move in a vertical direction in the hull that rests vertically. When a liquid treatment medium is removed or filled inside, respectively, the storage tank that rests vertically, the top cover will move up or down, respectively, in the hull that rests vertically. In this way, the storage tank that rests vertically is structured as a volumetrically flexible or variable unit. Such vertically resting storage tanks are known in themselves when used on the surface for other purposes, for example, for storage in batches of drinking water or hydrocarbon liquids.
    [0027] In another variant, said cylindrical hull can be arranged resting horizontally in the water. The interior of the hull is provided with at least one movable end cap connected, in a leak-free manner, to the horizontally resting hull, the lid of which is structured so as to allow it to move in a horizontal direction within the horizontally resting hull. . When a liquid treatment medium is removed or filled inside, respectively, the horizontally resting storage tank, said end cap will move inwardly or outward, respectively, within the horizontally resting hull. Therefore, the storage tank that rests horizontally is structured as a volumetrically flexible or variable unit.
    [0028] Furthermore, the hull, according to these variants, can be composed of a metallic material, in which the interior of the hull is coated with glass, for example, because the interior of the hull is covered by a spindle with a material suitable glass. This guarantees a minimal chemical influence of the liquid treatment medium on the interior of the hull.
    [0029] In addition, the movable hull lid may be composed of a metallic material, the interior of the lid being coated with glass, for example, because the interior of the lid is spindled with a suitable glass material. In a third embodiment, said storage unit can be composed of a storage tank that comprises several tank elements connected, in a mobile and leak-free manner, to each other. Such storage tank is demountable and expandable and will decrease or increase in volume, respectively, as a liquid treatment medium is extracted or filled, respectively, in the bag-shaped storage tank.
    [0030] For example, said tank elements may comprise longitudinal folds connected, in a mobile and leak-free manner, to each other. Therefore, the storage tank is formed as demountable and expandable bellows, for example, a bellows that has an accordion or similar shape.
    [0031] Furthermore, said storage unit / tank may comprise a regulation means for the periodic dosage of the liquid treatment medium in the injection water to the injection well.
    [0032] As an alternative, said storage unit / tank may comprise a regulation means for the continuous dosage of the liquid treatment medium in the injection water to the injection well.
    [0033] Furthermore, the said loading point for the injection water may comprise a surface installation. This surface installation may be located at sea, for example, in the form of a fixed or floating bottom platform, or in the form of a floating vessel, for example, a production vessel. The surface installation can also be located on dry land, for example, in the form of a land-based plant.
    [0034] Still in addition, the injection water of the surface installation can comprise water taken from a body of water in which the submerged line is located. This body of water can be composed of sea water, a lake, river or delta. Alternatively, the injection water can be made up of water produced from a separation plant for crude oil or hydrocarbon condensate.
    [0035] As an alternative or addition, said loading site for injection water may comprise at least one subsea installation for the treatment of injection water. Depending on the type (s) of the injection water treatment (s) to be carried out by at least one subsea installation, and / or depending on the appropriate considerations in the particular situation, the present at least one subsea installation may be connected, in a fluidly communicated way, directly or indirectly to the submerged line. Therefore, the present storage unit can be connected by fluid communication, to a side upstream or downstream of the subsea installation, and / or the storage unit can be connected directly to said subsea installation, for the dosage of at least one medium of liquid treatment in the injection water. In most situations, it seems to be the most appropriate, however, to dose the liquid treatment medium in a stream of treated injection water that emanates from the underwater installation through the submerged line.
    [0036] Such an underwater installation can also be associated with a remote host installation on land or on land for the remote control of the underwater installation, including the transmission of control signals, monitoring the signals and possible work energy to the equipment associated with the underwater installation. . As an alternative or addition, such an underwater installation can be structured to be more or more autonomous, for example, because the underwater installation is equipped with several means to control and activate the activation equipment, regulation equipment, control units and possible monitoring equipment associated with the underwater installation. In this context, the underwater installation may also comprise means of communication for the cable or wireless transmission of various signals between the underwater installation and a remote surface or marine surface installation. In addition, this can also refer, for example, to regular transmission signals that report the status and condition of the underwater installation, or transmission of program changes / updates to an electronic control system for the underwater installation.
    [0037] In the context of such an underwater installation, the injection water may comprise water extracted from a body of water within which the said underwater installation is located, for example, water from a sea, lake, river or delta.
    [0038] Furthermore, said subsea installation may comprise at least one device for the removal, without filtration, of solid particles from the injection water. An example of such an underwater device is described in WO 2007/035106 A1. This subsea device comprises an enclosed space structured to allow the supply water to be taken directly to a lower portion of the enclosed space, the space from which it is also structured to allow treated water to be taken out of a upper portion of the enclosed space. This enclosed space also has a cross-sectional area structured to allow water to flow from the lower portion to the upper portion at a flow rate that is low enough for undesirable solid particles to precipitate out of the water through gravitation. In addition, this closed space can be formed as a receptacle or module being placed on, for example, an ocean bed or similar.
    [0039] As an alternative or addition, said subsea installation may comprise at least one device for the chemical treatment of injection water. An example of such a chemical treatment device is described in WO 2004/090284 A1. This patent publication refers to a method and device for underwater chemical treatment of injection water, in which a module-based underwater device that is connected to an injection well for water injection is used. The device contains at least one receptacle supplied with at least one type of water-soluble solid-state chemical. The receptacle can, for example, be replaced by means of a remotely controlled underwater vehicle ("ROV"). Then, the water is brought into contact with the chemical in a solid state, through which it gradually dissolves and is mixed with the water. The finally treated water is then injected into a reservoir associated with a well. In doing so, chemical treatment and water injection can be carried out without having to use a vessel or immediate overlapping surface installation. The water-soluble solid-state chemical can comprise chlorine and / or biocide, but also several other chemicals, such as oxygen scavengers, corrosion inhibitors and scale inhibitors. This chemical treatment device can be composed of a separate unit or it can be incorporated in the aforementioned device for the removal, without filtration, of unwanted solid particles from the supply water.
    [0040] As an additional alternative or addition, said subsea installation may comprise at least one device for the destruction of organic material in the injection water. An example of such a destruction device is described in WO 2007/073198 A1. This patent publication refers to a method and device for destroying organic material in injection water for an injection well. The device makes use of at least one electrochemical cell with associated operating means for the electrolytic generation in situ, from water, of at least short-lived free hydroxyl radicals. By means of operating means, the electrochemical cell is structured in such a way as to allow it to conduct the injection water through it as a source material for the generation in situ of at least said free hydroxyl radicals from the injection water. Such hydroxyl radicals will immediately destroy the organic material engaged in the injection water. This destruction device can be composed of a separate unit or it can be incorporated in the subsea device mentioned above for the removal, without filtration, of particular undesirable solids from the water supply. As an additional alternative, the destruction device can be mounted together with the aforementioned chemical treatment device.
    [0041] Furthermore, the injection well to which the present technical system is connected by fluid communication, can be a land-based well or an underwater well. It seems more appropriate, however, to use the present technical system in relation to a submerged injection well.
    [0042] Still in addition, the at least one storage unit can comprise at least one closable filling opening for filling said liquid treatment medium in the storage unit. Therefore, the filling opening can be associated with various valves, couplings, flanges, seals / gaskets and the like and also associated with various activation equipment, regulation equipment, control units and monitoring equipment possible to activate, regulate, control and possibly monitor, respectively, the filling of the liquid treatment medium in the storage unit. Such equipment should be considered as prior art and is not discussed further in this document.
    [0043] Therefore, said opening for closable filling can be structured in a way that allows it to be connected to a filling line from the surface. It may also concern a temporary fill line that is lowered, when required, from a host vessel on the surface, and which is connected to the fill opening of the storage unit to fill the liquid treatment medium in the storage unit. In this context, a remotely controlled underwater vehicle (ROV) can possibly be used to perform the hooking and possibly to operate various equipment used in this field.
    [0044] As an alternative, the closeable fill opening can be connected to a permanent fill line from the surface. Thus, it may concern a filling line that extends between the storage unit and a remote supply unit on the surface, for example, a land or sea supply unit. When at sea, such a supply unit may be located in a surface installation, for example, in the form of a fixed or floating bottom platform, or in the form of a floating vessel, for example, a production vessel.
    [0045] Furthermore, said liquid treatment means can comprise at least one of the following types of chemicals: - an active surface agent; - an oxygen scavenger; - a corrosion inhibitor; - a scale inhibitor; - chlorine; - biocide; and - a nitrate.
    [0046] Furthermore, the active surface agent can be composed of a polymeric agent with active surface (surfactant polymer - SP). In addition, the surface active polymeric agent can be composed of an alkaline surface active polymeric agent (alkaline surfactant polymer - ASP).
    [0047] The addition of nitrate to the injection water represents a relatively new method for treating injection water. In this context, it is more common to use calcium nitrate (CaNO3) and sodium nitrate (NaNO3). The purpose of such a nitrate treatment is to stimulate the growth of nitrate-reducing bacteria in the injection water, which inhibits the growth of sulfate-reducing bacteria in the injection water. The aforementioned sulfate-reducing bacteria are known to produce toxic and corrosive hydrogen sulfide gas (H2S gas), which causes undesirable corrosion of wells and processing equipment and also acidifies underground hydrocarbon reservoirs. Treatment of nitrate with injection water is considered to be an environmentally friendly method of inhibiting the development of sulfate-reducing bacteria in injection water and hydrocarbon reservoirs.
    [0048] Additionally and advantageously, at least one storage unit can be covered by a protective structure, for example, a protective jacket, in order to protect the storage unit against collision with external objectives in the surrounding water, for example example fishing equipment and anchoring equipment.
    [0049] According to a second aspect of the invention, a method for dosing at least one liquid treatment medium in the injection water into an injection well is provided, the method using a technical system comprising : - a submerged line for transporting the injection water from a loading point to the injection water; and - at least one liquid-sealed storage unit for said liquid treatment medium. The distinguishing feature of the method is that it comprises the following steps: (A) structuring at least one storage unit as a volumetrically flexible or variable unit; (B) placing said storage unit under water; (C) filling said liquid treatment medium in said storage unit; (D) connect, through fluid communication, said storage unit to the submerged line; and (E) dosing said liquid treatment medium in the injection water.
    [0050] Incidentally, the same comments mentioned in the context of the preceding description of the technical system according to the first aspect of the invention are also applicable to the present method, according to that second aspect of the invention.
    [0051] Advantageously, said storage unit can be placed on or in a water bottom, for example, on or in an ocean bed or at the bottom of a lake, river or delta. In this context, the storage unit can possibly be placed on a suitable basis.
    [0052] In addition, the liquid treatment medium can be dosed periodically or continuously into the injection water into the injection well. In addition, the injection water can be sent from a surface installation located at sea or on land.
    [0053] In this context, the injection water of the surface installation can be taken from a body of water in which the submerged line is located.
    [0054] As an alternative or addition, the injection water can be sent out from at least one subsea facility for treating the injection water.
    [0055] Also in the latter case, the injection water can be removed from a body of water in which the said subsea installation is located.
    [0056] Furthermore, said subsea installation can comprise at least one device for removing, without filtration, solid particles from the injection water, such as the subsea device described in the document in WO 2007/035106 A1.
    [0057] As an alternative or addition, said subsea installation may comprise at least one device for the chemical treatment of injection water, such as the chemical treatment device described in the document in WO 2004/090284 A1.
    [0058] As an additional alternative or addition, the underwater installation may comprise at least one device for the destruction of organic material in the injection water, such as the destruction device described in the document in WO 2007/073198 A1.
    [0059] In this context, at least one storage unit can be connected, by fluid communication, to a side upstream or downstream of the subsea installation and / or the storage unit can be connected directly to said subsea installation, for dosing at least one liquid treatment medium in the injection water.
    [0060] In addition, the injection well can be a land-based well or an underwater well.
    [0061] Still in addition, said liquid treatment means can be filled in at least one storage unit through at least one opening for closable filling in the storage unit.
    [0062] Therefore, said opening for closable filling can be connected to a filling line from the surface, for example, a temporary filling line from a host vessel on the surface, in which said liquid treatment medium is filled inside the storage unit. In this context, a remotely controlled underwater vehicle (ROV) can possibly be used to connect the closeable fill opening to the fill line from the surface and possibly also to operate various equipment used in this field.
    [0063] Alternatively, the closeable fill opening can be connected to a permanent fill line from the surface, for example, a fill line that extends between the storage unit and a remote supply unit on the surface, for example example, an onshore or offshore supply unit.
    [0064] Furthermore, said liquid treatment means can comprise at least one of the following types of chemicals: - an active surface agent; - an oxygen scavenger; - a corrosion inhibitor; - a scale inhibitor; - chlorine; - biocide; and - a nitrate.
    [0065] Furthermore, the active surface agent can be composed of a polymeric agent of active surface, for example, polymeric agent of active surface alkaline, while said nitrate can be composed of, for example, calcium nitrate (CaNO3 ) or sodium nitrate (NaNO3).
    [0066] Furthermore, at least one storage unit can be covered by a protective structure, for example, a protective shirt. In doing so, the storage unit is protected against collision with external objects in the surrounding water, for example, fishing equipment or mooring equipment.
    [0067] It is also disclosed in the present document a use of a technical system, according to the first aspect of the invention, is provided to dose at least one liquid treatment medium in injection water to an injection well.
    [0068] In addition, a use of a method according to the second aspect of the invention is disclosed in the present document, provided for the dosage of at least one liquid treatment medium in injection water to an injection well.
    [0069] From now on, exemplary modalities not limiting a technical system, according to the invention, will be shown.
    [0070] Brief description of the figures of the exemplifying modalities
    [0071] Figure 1 shows a schematic plan view of a first modality of a technical system according to the invention placed on an ocean bed, in which the system comprises a storage tank filled with chemicals, in the form of a connected bag an injection pipeline that carries injection water from a marine platform and, additionally, to an injection well in the ocean bed;
    [0072] Figure 2 shows a schematic plan view of a second modality of a technical system, according to the invention, placed in an ocean bed, in which the system comprises a storage tank filled with chemicals, in the form of a bag , connected to an injection pipeline that carries injection water from an underwater installation placed on the ocean floor and, additionally, on an injection well in the ocean floor, the underwater installation being structured for various treatments of the water to be injected in the injection well;
    [0073] Figure 3 shows, on a larger scale, a schematic front elevation of the bag-shaped storage tank, according to Figure 1 or 2, in which the storage tank is shown connected to said injection pipe, where the storage tank is filled with a liquid chemical and where both the storage tank and the connection point in the injection piping are provided, each with a protective structure; and
    [0074] Figure 4 shows, also on a larger scale, a schematic frontal elevation of the storage tank according to Figure 3, but in which the storage tank is almost empty of liquid products and in which a supply vessel is about transferring liquid chemical from the vessel and down to the storage tank via a flexible fill line.
    [0075] The figures are schematic and show only details and equipment that are essential to the compression of the invention. Furthermore, the Figures are very distorted in relation to the relative dimensions of details and components shown in the Figures. The Figures can also be greatly simplified in relation to the format and richness of detail of such details and components. From now on, equal, equivalent or corresponding details in the figures will be denoted with substantially the same reference numerals. Description of exemplary embodiments of the invention
    [0076] Figure 1 shows a first modality of a technical system 2, according to the invention, placed on an ocean bed 4 underlying sea water 6 and at sea level 8. Technical system 2 comprises a storage tank in bag format 10 formed from a flexible material and containing a surface active chemical, liquid 12, which, in this case, is composed of a polymeric agent with a surface active. System 2 also comprises an injection pipeline 14 that carries injection water 16 from a first connection point 18 on a sea platform 20 and, furthermore, in an injection well 22 over the seabed 4. In another mode (not shown) ), this first connection point may likewise be located on land, for example, in a land-based plant. In this first modality, the surrounding sea water is pumped up to platform 20 as the supply water for the injection water 16. From now on, both the supply water and the injection water will be denoted with the reference number 16 Then, the injection water 16 containing a portion of the active surface chemical 12 is pumped down into the injection well 22 and further out into an oil reservoir (not shown) on subsurface 24 By doing this, the surface tension of the crude oil is reduced, whereby an injection water front flowing through the reservoir can force more crude oil out of the reservoir.
    [0077] The bag-shaped storage tank 10 is placed on a base 26 on the ocean bed 4 and is surrounded by a first protective structure 28 to prevent the storage tank 10 from being damaged by fishing equipment, anchoring equipment and similar. For the dosing of the liquid chemical 12 in the injection water 16 flowing through the injection pipe 14, the storage tank 10 is connected, via fluid communication, to the injection pipe 14 through a connection line 30. This line of connection 30 is connected, by fluid communication, to the injection pipe 14 at a connection point 32 in the pipe 14. Similar to the storage tank 10, this connection point 32 is covered by a second protective structure 34.
    [0078] The storage tank 10 is also provided with an outlet valve 36 operationally connected to a first control - and the regulation of the device 38 for timing - and / or control and regulation related to the amount of the chemical discharge rate 12 from the storage tank 10. In this embodiment, the chemical 12 is dosed continuously in the injection water flow 16 in the injection pipeline 14. Said control and regulation device 38 can also be connected to a suitable pumping medium ( not shown) for transporting the liquid chemical 12 to the connection point in the pipeline 14. In addition, the control and regulation device 38 is connected to platform 20 via a first control cable 40 ("umbilical line") for transmission signals and possible working power for components and equipment associated with the storage tank 10.
    [0079] Furthermore, the connection point 32 in the pipeline 14 comprises an inlet valve 42 with a second control and regulation device 44 for the control and regulation, among other things, of the inlet valve 42 and, therefore, of the flow of chemicals through it. These control and regulation devices 44 also comprise various injection equipment (not shown), for example, a suitable pumping medium, connection nozzles, injection nozzles and possible tube loops / connections to allow the liquid chemical 12 be injected into the injection water 16 in the injection pipeline 14. The control and regulation device 44 is also connected to platform 20 via a second control cable 46 for signal transmission and possible working power for the associated components and equipment connection point 32.
    [0080] Figure 2 shows a second embodiment of a 2 'technical system according to the invention. As a difference with respect to the first embodiment of the invention, this technical system 2 'comprises an injection pipe 14' which carries injection water 16 from an underwater installation 48 placed in the ocean bed 4 and additionally in the injection well 22. In this embodiment, water from the surrounding sea 6 is taken directly from the submarine installation 48 as supply water for the injection water 16.
    [0081] In subsea installation 48, the injection water 16 is subjected to various treatments before the treated water is pumped forward into the injection pipe 14 '. For the sake of simplicity, Figure 2 shows only one subsea installation 48, but several such subsea installations 48 can be used, if desired. Thus, at least one such underwater installation 48 may comprise one or more devices for removing, without filtration, solid particles from the injection water 16, as described in the document in WO 2007/035106 A1. As an alternative or addition, subsea installation 48 may comprise at least one device for the chemical treatment of injection water 16, as described in the document in WO 2004/090284 A1. As an additional alternative or addition, subsea installation 48 may comprise at least one device for destroying organic material in the injection water 16, as described in WO 2007/073198 A1.
    [0082] In addition, subsea installation 48 is connected to said platform 20 through a third control cable 50 for the transmission of signals and possible working power to components and equipment associated with subsea installation 48.
    [0083] In this embodiment, the injection pipe 14 'is also connected to an injection pump 52 placed on the ocean bed 4 in proximity to the injection well 22. The injection pump 52 is connected to the platform 20 through a fourth cable control unit 54 for transmitting control signals and working power to the injection pump 52.
    [0084] Figures 3 and 4 show equipment and components already discussed in the context of Figures 1 and 2. Furthermore, Figures 3 and 4 show that the upper side of the flexible, bag-shaped storage tank 10 has an opening for closable filling. In this modality, the opening filling consists of a vertical tube stub 56 with a connection flange 58 and an internal ball valve 60. The vertical tube stub 56 is structured in a way that allows it to be connected to a filling line flexible 62 from a supply vessel 64 at sea level 8, as shown in Figure 4. In this context, a remotely controlled underwater vehicle (not shown) can be used to connect fill line 62 to connection flange 58 at tube stub 56 and to open or close ball valve 60 on tube stub 56. Such a filling method can be used after initially placing an empty storage tank 10 on its base 26 in the ocean bed 4, but also for the subsequent filling of a liquid chemical 12 in the storage tank 10. Figure 4 shows a disassembled storage tank 10 almost empty of liquid chemical 12, but in either supply vessel nto 64 is about to transfer liquid chemical 12 from it to storage tank 10 via fill line 62. Figure 3, however, shows storage tank 10 after being completely filled with liquid chemical 12. The degree of filling of the storage tank 10 can possibly be measured, recorded and transmitted to the platform 20. This can be done by means of suitable measuring, recording and signal transmission equipment connected to said first control and regulation device 38 associated with the storage tank 10.
    权利要求:
    Claims (20)
    [0001]
    1. Technical system (2; 2 ') for dosing at least one liquid treatment medium (12) in injection water (16) to an injection well (22), in which the technical system (2; 2' ) comprises: a submerged line (14; 14 ') for transporting the injection water (16) from a loading point (20; 48) to the injection water (16); at least one liquid-sealed storage unit (10) containing at least one liquid treatment medium (12), wherein the at least one liquid-sealed storage unit (10) is structured as a volumetrically flexible unit; and wherein said storage unit (10) is connected, by fluid communication, to the submerged line (14; 14 ') for the dosage of the liquid treatment medium (12) in the injection water (16) to the injection well (22), characterized by the fact that at least one waterproof storage unit (10) is placed under water (6).
    [0002]
    2. Technical system (2; 2 '), according to claim 1, characterized by the fact that said storage unit is composed of a bag-shaped storage tank (10) formed from a flexible material.
    [0003]
    3. Technical system (2; 2 '), according to claim 1, characterized by the fact that said storage unit is composed of a cylindrical storage tank comprising a rigid and cylindrical hull, in which the interior of the hull it is equipped with at least one movable lid connected, in a leak-free manner, to the hull, the lid being structured in such a way as to allow it to move in a longitudinal direction inside the cylindrical hull.
    [0004]
    4. Technical system (2; 2 '), according to claim 3, characterized by the fact that the cylindrical hull is arranged vertically in the water (6), in which the interior of the hull is provided with a movable top cover connected, in a leak-free manner, to the hull that rests vertically, whose cover is structured in a way that allows it to move in a vertical direction in relation to the hull that rests vertically.
    [0005]
    5. Technical system (2; 2 '), according to claim 3, characterized by the fact that the cylindrical hull is arranged horizontally in the water (6), in which the interior of the hull is provided with at least one cover. movable end connected, in a leak-free way, to the hull that rests horizontally, the lid being structured in a way to allow it to move in a horizontal direction inside the hull that rests horizontally.
    [0006]
    6. Technical system (2; 2 '), according to claim 1, characterized by the fact that said storage unit is composed of a storage tank that comprises several tank elements connected, in a leak-free and mobile manner , each other.
    [0007]
    7. Technical system (2; 2 ') according to claim 6, characterized by the fact that said tank elements comprise longitudinal folds connected, in a mobile and leak-free manner, to each other.
    [0008]
    Technical system (2) according to any one of claims 1 to 7, characterized in that said loading point for the injection water (16) comprises a surface installation (20).
    [0009]
    9. Technical system (2 ') according to any one of claims 1 to 8, characterized by the fact that said loading site for the injection water (16) comprises at least one subsea installation (48) for the injection water treatment (16).
    [0010]
    10. Technical system (2 '), according to claim 9, characterized by the fact that said subsea installation (48) comprises at least one device for the removal, without filtration, of solid particles from the injection water ( 16).
    [0011]
    11. Technical system (2 '), according to claim 9 or 10, characterized by the fact that said subsea installation (48) comprises at least one device for the chemical treatment of injection water (16).
    [0012]
    Technical system (2 ') according to any one of claims 9, 10 or 11, characterized in that said subsea installation (48) comprises at least one device for the destruction of organic material in the injection water ( 16).
    [0013]
    Technical system (2; 2 ') according to any one of claims 1 to 12, characterized in that the at least one storage unit (10) comprises at least one closeable fillable opening (56, 58, 60) for filling said liquid treatment medium (12) in the storage unit (10).
    [0014]
    14. Technical system (2; 2 '), according to claim 13, characterized by the fact that said opening for closable filling (56, 58, 60) is structured in a way that allows it to be connected to a line of filling (62) from the surface (8).
    [0015]
    Technical system (2; 2 ') according to any one of claims 1 to 14, characterized in that said liquid treatment means comprises at least one of the following types of chemicals: an active surface agent ( 12); an oxygen scavenger; a corrosion inhibitor; a scale inhibitor; chlorine; biocide; and a nitrate.
    [0016]
    16. Technical system (2; 2 '), according to claim 15, characterized by the fact that the active surface agent (12) is composed of a polymeric active surface agent.
    [0017]
    17. Technical system (2; 2 ') according to any one of claims 1 to 16, characterized in that the at least one storage unit (10) is covered by a protective structure (28).
    [0018]
    18. Method for dosing at least one liquid treatment medium (12) in injection water (16) to an injection well (22), in which the method uses the technical system (2; 2 ') that it comprises: a submerged line (14; 14 ') for transporting the injection water (16) from a loading point (20; 48) to the injection water (16); and at least one liquid-sealed storage unit (10) for said liquid treatment medium (12), the method comprising the following steps: (A) structuring at least one storage unit (10) as a volumetrically flexible unit; (C) filling said liquid treatment means (12) in said storage unit (10); (D) connect, by fluid communication, said storage unit (10) to the submerged line (14; 14 '); and (E) dosing said liquid treatment medium (12) in the injection water (16), characterized by the fact that the method additionally comprises the step: (B) placing said storage unit (10) under water (6 ).
    [0019]
    19. Method, according to claim 18, characterized by the fact that it fills said liquid treatment medium (12) in at least one storage unit (10) through at least one opening for closable filling (56, 58, 60) in the storage unit (10).
    [0020]
    20. Method, according to claim 19, characterized by the fact that it connects said opening for closeable filling (56, 58, 60) to the filling line (62) from the surface (8), by means of which said liquid treatment medium (12) is filled in the storage unit (10).
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013018450B1|2020-09-29|TECHNICAL SYSTEM AND METHOD FOR DOSING AT LEAST ONE LIQUID TREATMENT MEDIUM IN INJECTION WATER FOR AN INJECTION WELL
    ES2822949T3|2021-05-05|Subsea storage and supply system, procedure for supplying chemicals to a subsea facility, procedure for reconditioning a storage tank, and procedure for refilling a subsea storage and supply system
    US8186443B2|2012-05-29|Method and apparatus for containing an oil spill caused by a subsea blowout
    US9079639B2|2015-07-14|Large volume subsea chemical storage and metering system
    BR112017009974B1|2021-07-27|A METHOD OF INSTALLING AN UNCONNECTED FLEXIBLE PIPE
    BR0314905B1|2012-11-27|storage located on the seabed.
    US20140112803A1|2014-04-24|Pump system, method and uses for transporting injection water to an underwater injection well
    MX2013015210A|2015-05-13|Modular exploration and production system including an extended well testing service vessel.
    US20200399848A1|2020-12-24|Low density fluid displacement to store or generate power
    JP2021525198A|2021-09-24|Fluid exclusion system
    BRPI0708997A2|2011-06-21|drilling rig located on the seabed
    BR112021002535A2|2021-05-04|plant treatment system, chemical injection skid for implantation in a facility, and method for injecting products into a subsea hydrocarbon production facility
    JP6554322B2|2019-07-31|Fluid separation device and fluid separation method
    US9016981B2|2015-04-28|Aquatic recovery and repair system
    CN203809308U|2014-09-03|Slurry and sand pumping device
    CN203769740U|2014-08-13|Offshore oil and gas field production system
    KR101516288B1|2015-05-06|Vessel for extracting oil from inside an undersea structure and control method thereof
    US10737677B2|2020-08-11|Low density fluid displacement to store or generate power
    BR112014007839B1|2021-01-19|method to stop or at least reduce uncontrolled hydrocarbon release, eruption, from a hydrocarbon extraction well
    KR101654217B1|2016-09-05|Apparatus and method for supplying and draining fluid from/to pressure vessel
    US20150273412A1|2015-10-01|Fluid treatment manifold for fluid stored in tanks
    JP2015048662A|2015-03-16|Liquid storage device
    CN105130140A|2015-12-09|Environmental remediation system
    WO2016084035A1|2016-06-02|Unidirectional base hydraulic pumping apparatus for increasing the re-injection/injection flow of formation water in oil wells
    KR20100102762A|2010-09-27|The method to guarantee fresh water preparation inthe event of a shortage of water on eatth
    同族专利:
    公开号 | 公开日
    NO331478B1|2012-01-16|
    DK2655793T3|2019-03-11|
    US20130264064A1|2013-10-10|
    EP2655793B1|2018-12-05|
    MY158969A|2016-11-30|
    WO2012087149A1|2012-06-28|
    US9528350B2|2016-12-27|
    AU2011345443A1|2013-07-04|
    AU2011345443B2|2016-06-09|
    EP2655793A1|2013-10-30|
    EP2655793A4|2017-10-25|
    NO20101793A1|2012-01-16|
    BR112013018450A2|2018-05-22|
    AU2011345443B9|2017-01-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3113699A|1961-05-03|1963-12-10|Us Rubber Co|Underwater liquid storage system|
    DE2447246A1|1974-10-03|1976-04-08|Peter Ing Grad Winkel|Equipment storing large quantities of liquid or gas under pressure - has flexible container anchored under water|
    DE2538419A1|1975-08-29|1977-03-10|Phoenix Gummiwerke Ag|Underwater oil storage tank - with floating piston between sea water and oil guided and sealed against wall|
    US4141377A|1976-08-30|1979-02-27|Brown & Root, Inc.|Underwater storage assembly|
    US4748011A|1983-07-13|1988-05-31|Baize Thomas H|Method and apparatus for sweetening natural gas|
    US4662386A|1986-04-03|1987-05-05|Sofec, Inc.|Subsea petroleum products storage system|
    US4653960A|1986-05-20|1987-03-31|Chun Joong H|Submersible offshore drilling production and storage platform with anti-catenary stationing|
    GB9603067D0|1996-02-14|1996-04-10|Capcis Ltd|Subsea raw water injection facility|
    US6062313A|1998-03-09|2000-05-16|Moore; Boyd B.|Expandable tank for separating particulate material from drilling fluid and storing production fluids, and method|
    WO2000039031A1|1998-12-23|2000-07-06|Amerada Hess Corporation|Advanced treatment for produced water|
    US6745838B2|2001-09-24|2004-06-08|Richard R. Watson|Chemical injection control system and method for multiple wells|
    GB0215063D0|2002-06-28|2002-08-07|Alpha Thames Ltd|System and method for the removal of particulates from water|
    ES2293071T3|2002-08-14|2008-03-16|Baker Hughes Incorporated|SUBMARINE UNIT FOR CHEMICAL PRODUCTS INJECTION FOR AN ADDITIVE INJECTION SYSTEM AND SUPERVISION FOR OIL OPERATIONS.|
    NO320112B1|2002-10-23|2005-10-24|Navion Asa|Seabed storage|
    NO20031569A|2003-04-08|2004-06-21|Soerco As|Method and apparatus for treating water to an injection well|
    CA2435642C|2003-07-21|2005-12-20|Robert C. Rajewski|Injector|
    BRPI0511628B8|2004-05-28|2017-03-28|Bp Corp North America Inc|method of recovering hydrocarbons from a porous underground hydrocarbon-containing formation by injecting a low salinity water into the formation from an injection well and injection well|
    NO333868B1|2005-09-22|2013-10-07|Seabox As|Method and apparatus for removing, without filtration, unwanted particles from untreated injection water|
    NO324547B1|2005-09-23|2007-11-19|Well Proc As|Method and apparatus for chemical dosing for injection water|
    NO323148B1|2005-12-23|2007-01-08|Well Proc As|Method and Device for Destroying Organic Material in Injection Water and Using Injection Water to Prepare Destructive Hydroxyl Radicals|
    WO2009040442A1|2007-09-28|2009-04-02|Shell Internationale Research Maatschappij B.V.|Method for enhancing recovery of a hydrocarbon fluid|
    US7963335B2|2007-12-18|2011-06-21|Kellogg Brown & Root Llc|Subsea hydraulic and pneumatic power|
    NO329529B1|2008-03-28|2010-11-08|Ott Subsea Bag Technology As|Collection device and method using the same|
    CN201284086Y|2008-08-04|2009-08-05|中国石化集团胜利石油管理局钻井工艺研究院|Underwater floating roof tank|
    EA019926B1|2008-09-17|2014-07-30|Шлюмбергер Норге Ас|Polymer gels as flow improvers in water injection systems|
    BR112012014201A2|2009-12-21|2016-05-31|Chevron Usa Inc|system and method of flooding with water from reservoirs at sea|
    US9034182B2|2010-08-24|2015-05-19|Shell Oil Company|Deepwater dispersion system and method of using same background|NO333477B1|2012-01-23|2013-06-24|Obs Technology As|Interim storage chamber|
    NO335691B1|2013-02-18|2015-01-26|Seabox As|Device and method for disinfecting and removing biological material from a stream of water|
    CN105899754B|2014-01-03|2018-03-13|国际壳牌研究有限公司|The method and system freezed for suppressing the low salinity water in the low salinity water injection flow tube of seabed|
    US9309750B2|2014-06-26|2016-04-12|Cameron International Corporation|Subsea on-site chemical injection management system|
    US9656800B2|2014-07-24|2017-05-23|Oceaneering International, Inc.|Subsea fluid storage system|
    EP3242921A1|2015-01-06|2017-11-15|Total SA|Process of providing a viscosified water for injecting into an underwater subterranean oil bearing formation and associated underwater facility|
    US10190383B2|2015-01-23|2019-01-29|Cameron International Corporation|System and method for fluid injection|
    US9945217B2|2015-01-23|2018-04-17|Cameron International Corporation|System and method for fluid injection|
    NO340075B1|2015-06-26|2017-03-06|Kongsberg Oil & Gas Tech As|A MEG storage system and a method for storing MEG|
    US10370272B2|2016-03-02|2019-08-06|Cameron Solutions, Inc.|Subsea deoxygenation in a water injection process plant|
    US9915129B2|2016-03-30|2018-03-13|Oceaneering International, Inc.|Dual method subsea chemical delivery and pressure boosting|
    US10066465B2|2016-10-11|2018-09-04|Baker Hughes, A Ge Company, Llc|Chemical injection with subsea production flow boost pump|
    WO2018102008A1|2016-12-01|2018-06-07|Exxonmobil Upstream Research Company|Subsea produced non-sales fluid handling system and method|
    WO2018217889A1|2017-05-23|2018-11-29|Ecolab Usa Inc.|Injection system for controlled delivery of solid oil field chemicals|
    EP3630341A1|2017-05-23|2020-04-08|Ecolab USA, Inc.|Dilution skid and injection system for solid/high viscosity liquid chemicals|
    EP3444427A1|2017-08-14|2019-02-20|National Oilwell Varco Denmark I/S|A subsea process fluid storage and processing system|
    GB2575453B|2018-07-09|2021-01-20|Subsea 7 Norway As|Subsea Fluid Storage Unit|
    US20200018138A1|2018-07-12|2020-01-16|Audubon Engineering Company, L.P.|Offshore floating utility platform and tie-back system|
    NO345890B1|2019-12-20|2021-09-27|Subsea 7 Norway As|Supplying water in subsea installations|
    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-09-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-05-05| B09A| Decision: intention to grant|
    2020-09-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    2021-04-06| B17A| Notification of administrative nullity (patentee has 60 days time to reply to this notification)|Free format text: REQUERENTE DA NULIDADE: 1) OTTO BANHO LICKS - 870210028965 - 23/03/2021; 2) SAIPEM S.P.A E VWS WESTGARTH LTD - 870210029211 - 29/03/2021 |
    优先权:
    申请号 | 申请日 | 专利标题
    NO20101793A|NO331478B1|2010-12-21|2010-12-21|Technical system, method and applications for dosing at least one liquid treatment agent in injection water to an injection well|
    NO20101793|2010-12-21|
    PCT/NO2011/000348|WO2012087149A1|2010-12-21|2011-12-19|Technical system, method and uses for dosing of at least one liquid treatment means into injection water to an injection well|
    [返回顶部]