Device and method for sanation and separation of gas accumulation from waters. RU patent 2520120.

FIELD: process engineering.

SUBSTANCE: invention relates to water depletion by gases. It comprises pipe system including one wildcat pipe to receive gas-bearing fluid, one injection pipe to force gas-depleted fluid back and at least two gas traps arranged in the device to create necessary pressure. Note here that said gas trap is connected with wildcat pipe and injection pipe so that fluid from wildcat pipe can be directed via gas trap to injection pipe. Said gas trap can be connected with gas intake device. Note also that said gas traps are vertically spaced apart and spaced from relatively depleted fluid deposit. They are communicated so that fluid lifting in wildcat pipe gets into first gas trap located at the first level of pressure whereat first gas or gas mix is separated. Then, depleted fluid gets into second gas trap at the same pressure level to extract second gas/gas mix. Note here that said first and second pressures differ while separate gas traps can be communicated with one or several gas intake devices. Or, one or several sets of gas traps can be connected with common gas intakes. Besides, this invention covers appropriate methods and application versions.

EFFECT: higher efficiency of gas separation from fluid.

20 cl, 2 dwg

The technical field

The invention relates to devices and methods for water depletion of dissolved gases, and also to separate gas phase of a mixture of gas and water phases of water bodies, and options for the use of these devices and how.

The level of technology

The last 200 years of global development with a pronounced industrial character have led to a sharp reduction of the reserves of fossil energy carriers, formed in the course of historical Geology. A large part of the world's oil, gas and coal in the near time will be exhausted. Despite this, the power of humanity up to the present time remains continuously strong and progressive (Hawksworth, J.: The World in 2050. Can rapid global growth be reconciled with moving to a low carbon economy?, Pricewaterhouse Coopers LLP - July 2008. 1-21.).

Currently, due to a variety of aspects, such as excessive demands on technology or high risk, due to the development of spontaneous phenomena exit gases, which will be important for global climate change, have not practiced development of deposits of methane hydrate found on the edges of the continents, i.e. at great depths (Zhang, Y., Kling, G.W.: Dynamics of Lake Eruptions and Possible Ocean Emptions. Annu. Rev. Earth Planet. Sci. 2006.34: 293-324.).

Along with the previously never-existing technologies that from the economic point of view allow the use of gas raw materials found in water sources, such as "deposits" can also be a risk.

Climate development land confirms global warming regardless of disputes about its causes. Recent geological findings confirm a new theory that without any contradictions explains short-term global extinction of species on earth. Unlike meteorite, volcanic eruptions, etc. this theory stems from extinction thesis massive accumulations H 2 S from the world's oceans (Bemer, R.A.: Plants, H 2 S, CO 2 , 2 and the Permo-thing Triassic Extinction. 2006 Philadelphia Annual Meeting (22-25 October 2006) Philadelphia, Pennsylvania, Paper No.137-9). Mechanisms of separation of the phases for this. The key mechanism in principle, associated with global warming. However the initiators of such a sudden happening offices phases can be of different origin, for example, such as a volcanic eruption, the emission of gas (methane), due to the separation of the phases, the anthropogenic greenhouse effect, etc. In small reservoirs presents the mechanism has already been observed (an example of this is already a significant scale is the recent extinction of fish in the Baltic sea). Eruptions in the lakes caused by separation of phases, known in different lakes of Africa, they have led to devastating disasters (Zhang, Y., Kling, G.W.: Dynamics of Lake Eruptions and Possible Ocean Eruptions. Annu. Rev. Earth Planet. Sci. 2006.34: 293-324.).

The controlled reduction of the concentration of gases that affect the climate, the deep waters would reduce the danger of eruption gases in the oceans and the passage of gases that affect the climate, the atmosphere. At the same time the available capacity of the seas to the accumulation of gases in the trend would increase.

An efficient method could allow this decrease depending on the amount of available gas and its composition as economical rehabilitation or also in the form of lucrative exploration of the gas field "ocean".

The problem in the extraction of gas from water sources is that the differences in pressure and density phase happening branch of the gas phase and the rise of a mixture of gas and water phases are highly nonlinear processes that during their course samoilivna (in free waters it happens even in the form of explosions), and thereby determine high requirements to material and production technology and carry a high risk of accidents. Tsang and Kling (Zhang & Kling) describe the free movement emerging gas phase in the waters associated with the lifting force, and its movement in the pipe as the process with positive feedback. Starting gas output leads to the reduction of density of the mixture and thereby lifting force. Due to the rise of a mixture of gas and water phases are achieved areas with lower ambient pressure that leads to the fact that the pressure in the mixture of gas and aqueous phase and further reduced and thereby leads to the release of additional gas. The mixture of water and methane, despite the low solubility of methane in the water, can lead to explosive rise. The higher solubility, for example, WITH 2 or H 2 S leads to much stronger feedback. Tsang and Kling appreciate the speed with which the center of the cloud of bubbles of methane (1% of the mass. CH 4 ) reaches the surface of the water from a depth of 500 m, 130 m/S. For 0,1% weight. maximum speed is still reaches 62 m/S. this 0,1% weight. CH 4 under standard conditions corresponds to about 22,4 l/mol * 1 g (CH 4 ) / 16 g/mol = 1,4 L. This mixture of gas and aqueous phase is on the surface of the water volumetric about half of the gas phase (the share of phase is 0.58). Mechanical energy density 1/2ρν 2 =ρgh leads to the pressure of the mixture h=V 2 /(2g)10o 2 m and thereby to explosive discharge to surface water.

The basis of the present invention is the task of reducing or the decisions of one or more of these problems.

Disclosure of the invention

To reduce the descriptions of further water that contains dissolved gases or gas phase, called fluid.

For solving the problem of a device for water depletion gases, including:

a system of pipes, which

i) has one exploration pipe for admission of gassy fluid

ii) one injection pipe to reverse drain fluid depleted gases, and

iii) at least two gas traps, which are located in the unit so that in gas traps can choose to create pressure,

in this case, gas trap is functionally connected with the exploration tube, and discharge tube so that the fluid from the exploration of the pipe can be directed through the gas trapped in the discharge pipe and the gas trap made with the possibility of connection from your device to receive gas;

I) gas traps functionally connected with the exploration tube, and discharge tube, so that the fluid from the exploration of the pipe can be directed over gas traps in the discharge pipe;

II) gas traps are located at a certain distance vertically one above the other and relatively objednaneho fluid field and are connected to each other functional so that the rising fluid from the exploration of the pipe enters the first gas trap, which is located on the ground level pressure, which allocated the first gas or gas mixture, then depleted fluid enters the second gas trapped on again given level pressure, which stands out for the second gas/gas mixture, the first pressure and the second pressure differences between them, and

III) separate gas traps, respectively, have functional to connect to one or more devices of reception of gas, or one or more groups gas traps can be connected with the General device of reception of gas.

During operation of the device exploration pipe lowered hole to enter fluid fluid in the field of water and preferred way continuously absorbs fluid in the device. The fluid is transported through exploration pipe the gas trap above the relative field. However, due to the existing dependence of solubility of the gas pressure separates the gas phase of the fluid. Released at the same time gas phase is separated in the gas trap, such as gravity. Conditions of flow of fluid in the gas trap optimized in relation to the separation of the gas phase. You can maximize the surface of the fluid flowing into the gas trap, by suitable devices (for example, by nebulization or by routing through a porous body or lattice). Settling tank, through which is facing fluid, is a variant of the implementation soothing water zone, which may go possible captured residual gas phase. Then depleted water is allocated and zapressovyvajut through the discharge pipe to a predetermined depth.

The proposed device can optionally have a regulated device, which is functionally connected with the system of pipes that in the pipe system can be created in the selected pressure, and thus controlled the flow in the exploration of the gas pipe through the trap to a discharge pipe. Adjustable device can be designed in such a way that by regulating devices in the pipe system, you can install the selected pressure. Adjustable device can be a passive device that by changing section in at least one place in the system of pipes allows you to adjust the pressure. Preferred passive adjustable device is the coupling, which is functionally connected with the unit so that the diameter in at least one place in the system of pipes, the preferred way in the exploration pipe, can kontrolowane to narrow. Adjustable device can also be active device. Preferred active adjustable device is the turbine. The proposed device may include a few regulated devices in the device may vary adjustable fixtures.

Adjustable device provides the necessary pressure in the pipe system. In passive system, this is achieved, for example, at the expense of the appropriate decrease of the cross section in the pipe system. The preferred way adjustable device is the turbine. If necessary, the turbine during the start-up phase is to move the fluid flow. When the flow of fluid began to move, he is due to perform under the action of lifting force of separation of phases preferred way voluntarily moves, developing useful energy flow. In this stage turbine can for example be used to control flow of a fluid, optimization of separation of gases in gas traps and limitations of the mechanical load on the device due to the motion of the fluid that is associated with a carrying power. This turbine regulates the pressure in the pipe system. This may be achieved due to the fact that the turbine takes part mechanical energy and provides the possibility of its transformation into electrical energy. Adjustable power turbine and height-adjustable position of the gas trap above the relatively fluid fields allow you to adjust the optimum conditions of pressure and time when the fluid in the gas trap. These conditions can be selected and adjusted so that only certain gases or gas mixtures are separated from the fluid and/or separated only a certain amount of a particular gas, selected gas mixture or all of dissolved gases and/or is almost complete removal of gases. Gas trap may be associated with the device of reception of gas, which allows to take separated gases, in addition to clear them and/or refer for additional use cases. The proposed device may be connected with the exploration or processing platform, which is on the surface of the water or on land. This platform can be mobile, for example, as the ship or stand locally anchored, for example, as a device, such floating derrick-tap for offshore drilling, or to be fixed in the ground or bottom of the reservoir. A platform may have additional devices, such as device of reception of gas, a device for converting mechanical energy into electrical or chemical energy and/or additional devices for further processing and separation of pre-depleted gas emissions.

Exploration pipe for fluid intake and discharge pipe for removal of depleted water can be made of a telescopic pipe, which can descend on a fixed depth. Tube if necessary can be completely or partially folded into each other, resulting in exploration pipe inside the discharge tube (or Vice versa). Pipes can be alternatively located with the possibility of rotation and/or rotate relative to each other and to be agreed by its geometry with the specific situation of the field. In one of the preferred form of the implementation of at least one part of the system of pipes is covered with a hydrophobic material, the preferred way Teflon.

Inside exploration pipes/tubes, bars, which if necessary may be established in the field of entry holes (holes), as well as the turbine wheel can be covered with a waterproof material (if necessary), for example telesterion material. Also important to separate the component parts of the gas traps can have a hydrophobic coating.

Hydrophobic material can be applied in a structured way, for example in the form of microporous or fibrous surface water side. When using such surfaces under selected conditions, for example, if the concentration of at least one of dissolved gas, forming a gas medium, close to concentrations of saturation, and hydrostatic pressure enables the separation phase, at least, this gas may preferred the separation of gas on a hydrophobic surface, or can also be increased speed branch after initiation.

The device has at least two gas traps that are functionally connected with the exploration tube, and discharge tube so that the water can be routed from the exploration of the gas pipeline through the trap in the discharge pipe. For the purposes of the invention, the term "gas trap understand any device that is suitable for the separation of the gas phase, which was created by separating the phases of a mixture of gas-fluid, and now must be separated from the liquid phase. In this case, gas trap is located in the device so that the gas trap can be created in the selected pressure. According to the invention to separate gas phase can be used in different known methods and their combinations. As an example, figure 1 shows a schematic representation of gravitational gas trap. This arrow with closed head show the direction of movement of the phase mixture 10, moving upwards. Above the surface of section 11 gas-water phase mixture of 10 enters the chamber of branch gas traps. On the ceiling camera branch of the pipeline is 12 for discharge of the separated gas or gas mixture. The removal of separated gas from the camera Department through a pipeline of 12 can be implemented, for example through gazoudalenija valve 12 with the ability to control and/or management. Depleted fluid gets from the gas traps in line 14 phase mixtures and can optionally be sent in additional gas trap, in which there are other parameters of pressure and are distinguished and separated other gases or gas mixtures.

Alternatively, or in combination with this for the Department of the gas phase can be used membranes (for example, hydrophobic filter or polymer modules), through the use of vasoselective membranes can further increase getspecified divide ability of the device. Appropriate membrane known specialist. Gas traps can be optimized at the expense of installed membranes, determined the path of flow of fluid and/or create a local pressure gradients (through the use of the hydrodynamic effects on the blend, reflective plates and the like) from the point of view of maximum gas separation. Gas traps can be connected to the device of reception of gas.

Optimal pressure drop to gas traps can be created by defining the position of the gas traps on the height above benaulim fluid field. Additionally pressure drop to gas traps can vary and be governed by backup pressure in the pipe system, provide an adjustable device.

The pressure in the gas trap p g can be simplified to show, for example, the following relations:

p g =p d p p +l gh w w +p atm , where

p g - pressure in the gas trap

p-atm - air pressure,

p a - column density of the fluid, causing lifting force (because of the lower density of phase mixture in comparison with the density of water),

p d - due to the flow of dynamic pressure, or the pressure in the pipe system in the field of gas traps,

l w gh w - hydrostatic pressure depending on the difference in elevation above water level.

This pressure disappears if the gas trap was placed exactly at the height of the water level; positively, if the gas trap is located below the water level, and becomes negative above the water level (hanging water column in the discharge pipe).

Because of the dependence of the density of the fluid pressure (the gas density is proportional to the ambient pressure allocated volume of gas indirectly proportional to the ambient pressure), complex conditions of flow phase mixture and the necessary separation of gas in the gas trap you want to optimize dynamic pressure in the pipe system for flowing process. From the above equation we can come to the conclusion that due to the determination of the height h w , which is positioned gas trap, reached the upper limit of the gas pressure p g , above which the flow in the pipe system stops. Due to this, accessible, independent, easy to manage criteria for process optimization.

For example, the hanging post fluid (figure f) in the discharge pipe under the gas trap can be stabilized by suction gases released by vacuum pump with pressure in the gas trap p g =p atm l f gh f =p atm l w gh w , where l w gh w - equivalent hanging post fluid hanging water column.

Suitable location of the gas trap height above mine for example, if due to him in the gas trapped under the pressures at which the desired gas and/or gas mixture is already present in the gas phase, while the unwanted gases in small amounts presented in the gas phase.

The preferred way of the gas trap has an adjustable gazoudalenija valve. If the device has multiple gas traps, one, several or all of the gas traps can have one or more gazetteonline valves. For gazetteonline valve/valves can be located (if necessary cooled) compressors (technically, for example, variants are possible up to 1500 bar), which compresses the gas/gas mixture to select the set pressure, and thus the preferred way between the pressure in the gas trap and set pressure for the relevant gas flow must be overcome only appropriate pressure difference. The set pressure can be adjusted by vapor pressure curves such that 2 and H 2 S condensed from the gas mixture to specific values of the residual partial pressure, gravimetrically are separated and can be transported in liquid form.

The preferred way the device has at least one gas trap, which is located below the water level. Also some or all of the gas traps can be located below the water level.

If the device has multiple gas traps, gas traps can be located in the pipe system so that

i gas traps functionally connected with the exploration tube, and discharge tube that fluid from exploration pipes can be sent through the gas traps in the discharge pipe;

ii) gas traps are located at a certain distance vertically one above the other and relatively objednaneho fluid field and are connected to each other functional so that the rising fluid from the exploration of the pipe enters the first gas trap, which is located on the ground level pressure, which allocated the first gas or gas mixture, then depleted fluid gets into the second gas trapped on again given level pressure, which stands out for the second gas/gas mixture, the first pressure and the second pressure differences between them, and

iii) separate gas traps respectively able to functionally connect to one or more devices of reception of gas, or one or more groups gas traps can be connected with the General device of reception of gas.

Various options of several gas traps and/or offer several devices can be arranged as cascades, depending on the purpose of use. For example, stationary spatial effect can be realized through geogenic/human systems of removal of gas at the expense of parallel work of several vertical combinations or for the account of the construction of pyramidal structures.

Figure 2 schematically shows the structure of the device with cascading Department of the gas phase. Shows part of such a device with two located one above another gravitational gas traps 20 and 30, with the first gas trap 20 opozicionerov in depth so that the gas trap are the conditions under which can separate the first specific gas and/or gas mixture, and the second gas trap 30 opozicionerov in depth so that in this second gas trapped 30 are the conditions under which can separate the second specific gas and/or gas mixture. The conditions in the first gas trapped 20 and the second gas trapped 30 differ from each other, through which gases and/or gas mixtures which, respectively, are separated, also differ from each other. Both gas traps 20, 30 are respectively 12 pipelines, equipped gazetteonline valves for discharge of the corresponding separated gas or gas mixture. Both gas traps 20 and 30 can have system 15 suction of water, which can be located with the possibility of displacement and/or rotation. Suction system of water are used to replenish the water in the proposed device and can be performed, such as water pumps, driven by rising water, and can optionally be equipped with adjustable and/or controlled shut-off valves. Both gas traps 20 and 30 are connected to each other through pipelines 14 phase mixture so that the phase mixture, objednana first gas or gas mixture may withdraw from the first gas traps 20 and be directed to a second gas trap 30 so that there can be made in the course of the second gas or gas mixture. After passing all stages, or gas traps proposed device depleted fluid and/or unwanted gases, such as CO2 , return back along the discharge tube 16 and, if necessary, are pressed at the appropriate depth. The discharge pipe of 16 may be, for example, is designed for fastening the device.

Thanks to the technical capabilities of the cascade branch of the gas phase (see figure 2) occurs effective option for separating gas economic significance, because the necessary energy for quite superficial fluid deposits provide water.

However with stepped location in height are combined the following dependent on temperature and pressure mechanisms the Department.

For supercritical gases this separation of phases leads to the formation of the gas phase, depending on the height at which kinetically can influence the flow properties (e.g., turbulence), and the vessels (for example, porous body, hydrophobic surface); gas phase volumetric gas increases to trap and can be separated in it.

For gases which have critical temperatures (see table 1) above, the existing temperature fluid separation of phases leads to the separation of gas and fluid, and the gas is merged into drops and forms together with a fluid of common liquid mixed phase, which runs the gas trap, while the inside is probably formed other gases of the gas phase is installed vapour pressure of the corresponding gas. The ratio of the achieved vapour pressure and the pressure of the gas phase determines the pollution of the gas mixture evaporated gas.

Only at the further reduction of pressure to depend on gas critical pressure liquid gas phase completely evaporates from the mixed phase. However, the kinetics of evaporation and vapor pressure generated gas phase depend on pressure and temperature and kinetics additionally depends on the size and properties of the surface section of phases (solid-liquid-liquid), as well as the dynamics of the phases.

As a result of evaporation of liquid gas phase and, possibly because of proceeding reactions of fluid can be removed heat. This effect can be used for cooling compressors or to accumulate environmental water through appropriate design and exploration pipes (for example, large heat transfer surface with the surrounding water, high heat-conducting properties of the material of the vessel) and intensive heat transfer wall-fluid.

Table 1 shows selected properties of gases, which are important for water sources. The critical temperature indicates the upper limit up to which the gas can be liquefied. Critical pressure, describes the necessary pressure at a temperature slightly below critical. From the table it can be understood that gases such as methane, oxygen, nitrogen, argon and helium, liquid water cannot be liquefied, and the hydrogen sulfide and carbon dioxide - can. In addition, the table shows that different gases have obvious differences in the steam pressure, i.e. pressure, which condensed gases create for the set temperature own steam phase or represented in existing gas mixture in equilibrium phases.

Table 1 selected properties real gases

Physical property / gas

The critical temperature [°]

Critical pressure [bar]

Steam pressure at 21 degrees Celsius [bar]

Now if gas traps cascade positioned so in depth that WITH 2 still subject enters the gas phase, CH 4 , as the gas phase, effectively separated from 2 and H 2 s Subordinate transition in the sense of the present invention may be represented, for example, in the case of unwanted gas or gas mixture as time is not yet in a quantity greater 1-10% in the separated gas and/or gas mixture. Subordinate transition can be represented also in case of unwanted gas or gas mixture just not yet in quantities greater 1-10% from initially dissolved quantity of this gas or gas mixture in the fluid. In any case, achieved or the required quality of separation depends along with the physical properties of gases from the composition of fluid field, its depth, and the settings specific to a device and method, and can be managed at the expense of these parameters over a wide range. Specialist understands that and it is not difficult to determine and adjust the settings specific to the device and method, and operate a device is optimal for the respective purpose. If the height of the removal of the gas inside the exploration of the pipe or part of the Deposit does not allow sufficient to separate gases/gas mixture, using polikliinik compressors at any time to produce methane asked level of pollution in the form of 2 and H 2 s

If now the water, depleted CH 4 , inside the cascade is on the altitude at which when environmental conditions are still subordinate to the removal of H 2 S, there is a gas trap occurs highly enriched gas phase 2 , while the H-2 S still does not go to the gas phase in large numbers.

The depth of the gas traps can be adjusted to the desired temperature and established conditions for fluid flow simply by hydrostatic pressure corresponding to the pressure p g gas phase.

Residual gas, which can now, for the most part (it should be noted that among the considered gas H 2 S best soluble in water, followed by 2 ) consist of sulfide, you can finally remove effectively in the gas trapped above the surface. In addition, with the help of the vacuum pump in rising and/or hanging water column filtering completely fluid can be used generated negative pressure. Depleted thus gases gravitational water is re-injected to any (because almost no effort), thus asked for geochemical, biological or physical criteria, the depth and/or zapressovyvajut.

Separated gases are held in various pipes/hoses for exploration platform and can it properly be processed further.

Already liquefied by compression WITH 2 can be discharged back in cascade on a separate pipeline to a predetermined depth with neutral balance (for example, on the bottom of the reservoir). Liquefied 2 , starting from a depth of more than 3000 m, up to the temperature in 281,8 It has a higher density than water, and would tend to avoid the congestion in morphological cavities, to enter the phase of the breed, to dissolve in water and environmental distributed, and microbiologically be transformed. Thus diffuse distributed in sea water column 2 can be effectively removed from the global marine circulation for thousands of years and locally to concentrate. Along with the accumulation in the abyssal areas may also be zapisywanie in the seabed. The heat that occurs when dissolved 2 in the bottom water can, for example, be used for additional mobilization of methane from deposits of methane hydrate with potential risk.

Sulfur can be extracted recovery (for example, in the reaction with chlorine) separated from H 2 s

Thus, methods and devices by which gas accumulation and gases that cause the greenhouse effect, can effectively (huge natural differential pressure + partly very high solubility of gas at the expense of what can be achieved by a low-density phase mixture) to separate themselves and to depart from the global circulation of substances.

Since the world's oceans have a large surface (the surface of the exchange with the atmosphere) and have a pronounced circulation for compensation concentration, here anthropogenically possible, i.e. point, intervention in the gas balance for local depletion "hot-spot" can have a sustainable impact on climate stabilization and marine population.

The proposed device has along with the pipe system, at least one adjustable device, which is functionally connected with the system of pipes in such a way that in the pipe system can be created in the selected pressure, and thus controlled the flow in the exploration of the gas pipe through the trap to a discharge pipe. Adjustable device can be turbine.

The preferred way turbine has at least one impeller, which is installed with the possibility of rotation axis so that the pressure in the pipe system can be adjusted.

The preferred way all blade of the turbine wheel is set accordingly with the possibility of rotation axis.

The preferred way, at least one turbine is designed so that the turbine in a separate stream of water takes away the mechanical energy of the system flow and prepares it for energy.

Within the system of pipes can be one or several turbines. They can interact with each one combined system of the motor/generator and create the circulation flow in the pipe system. Because of this deep water moves to a lower level of hydrostatic pressure, gas is conducted through the trap again zapressovyvajut discharge pipes to choose a water levels. To the extent, which is due to lift the separation of the gas phase, decreasing the density of the phase mixture leads to its own dynamics, connected with lifting force. Accordingly, you can throttle leading power turbine for the appropriate places. Now if fluid velocity exceeds a critical value, the turbine is taken from fluid systems mechanical energy (offset backup pressure on the part of the outflow on the direction of flow of the turbine) and lead, for example, engines, which are now as generators produce electricity. If the supply blade surface of the wheels, as well as in the wheels of wind power plants, installed with the possibility of rotation axis, the pressure can be adjusted over a wide dynamic range, depending on the turbine and effectively convert the received this rotational energy through appropriate Executive gear into electrical energy. Pressure adjustment backwater allows you to manage the kinetics of removal of gas, depending on depth. Thus, for example, located deeper turbine can get energy from above and Vice versa.

The proposed device can be configured as mobile working device. A system of pipes and gas trap form mobile operating system. The proposed device may be connected with exploration and/or processing platform. Manufacturing platform can be attached flexible hose connection. A system of pipes made/is managed in such a way that the force of bestowal independent water circulation leads to the directed movement or rotation of exploration systems. Mobile due to this exploration system optimized in terms of their geometry from the point of view of technology flow and allows you to perform its own motion, with a small amount of energy. Gas trap(and) can operate continuously or with breaks (for example, also passively due to regulation of gravity).

For example, if intermittent operation, it leads to periodic evacuation and re-filling the gas trap (trap). However, different levels of filling of gas in the gas trap change the lifting force, which periodically achieved different levels in the water. At the same time a sudden loss of pressure in the gas trap after opening gazoudalenija valve leads to increased pressure difference between the inputs of fluid and gas trap. This effect can be used purposefully to induce separation of phases, if the discharge pipes are check valves, controlled by differential pressure.

The end alignment/pipe ends can be passive positioning (directed movement or rotation). In addition, may provide for active drives.

In the preferred form of the implementation of all the proposed device is below the water level.

The invention relates to a method for selective depletion of fluid water deposits gases and/or gas mixtures, which includes the following operations:

a) receiving objednaneho fluid

b) the establishment of suitable first of parameters of pressure due to the controlled rise of the fluid in which the first gas and/or gas mixture stand out from the fluid and pass to the gas phase,

c) translation of fluid in the gas trap and the separation of the gas phase from the rest of the fluid, the pressure in the gas trap created by selective control selected depths,

d) if necessary, the translation of separated gas and/or gas mixture in the device of reception of gas,

e) at least one-time repetition of the operations b)-d), and consequently are other parameters pressure through selective control selected depths at which separates another gas and/or gas mixture,

f) the return of depleted fluid.

In the proposed method, the pressure in the gas trap and/or gas traps are due to selective control of the selected depth.

In the preferred form of the method parameters pressure during operation b) are created by the combination of the selected depth and pressure backwater, controlled by an adjustable fixtures, the preferred way of the turbine.

In another preferred form of the proposed method is one of the gas trap positioned in depth so that the desired gas significant part enriched in the gas trap, then the maximum share of unwanted gas is separated in gas phase due to the ratio of the vapor pressure to the set pressure of the gas phase. The maximum share can be represented, for example, in the case when unwanted gas is more than half the gas phase, separated in the gas trap.

In particularly preferred form of the proposed method of a gas trap positioned in depth so that unwanted gas or gas mixture is still not presented in any particular for the application of number, for example 1-10%, in separate gas and/or gas mixture or unwanted gas or gas mixture is still not presented in the separated gas more than 1-10% dissolved in the fluid quantity of this gas or gas mixture.

The proposed method can be implemented in such a way that one of the gas trap positioned in depth so that the desired gas is more than half the gas phase, separated in the gas trap.

The proposed method can also be done in such a way that gazetteonline valves gas traps are located (if necessary cooled) compressors and they work in such a way that, regardless of the actual pre-separation of gases in gas traps always complied with the standards for partial pressure of carbon dioxide (CO 2 ) (e.g., <5%) and of hydrogen sulphide (H 2 S)(e.g., <1%) in the flow of the extracted methane (CH4 ).

The preferred way desired gas is adcitional CH 4 and unwanted gases are liquefied under pressure gases WITH 2 and/or H 2 s

The preferred form of the proposed method differs in that unwanted gas is 2 , and unwanted gas zapressovyvajut at a suitable depth of fluid water field.

The offered device and method can be used for extraction of gas from the fluidised fields defined largely by the user purity.

Advantages of the invention

The invention is used for effective management of spontaneously occurring separation of phases. The invention allows the separation of the released gas mixtures and production of enriched gas components in suitably located gas traps.

From the ecological point of view the invention is used to depletion of waters, especially deep water, such as oceans, gas (CH 4 , N 2 S, 2 ), and, thereby, to prevent disasters and long-term reduction of flows of gases that are important for climate, from the oceans into the atmosphere.

From the economic point of view, receive and way, which allows to efficiently develop water gas field and which can transform the kinetic energy of the spontaneous phase mixture gas-water in an electric current.

By combining these environmental/economic aspects depending on the specific situation of the Deposit potential cheap/cover costs way for preventive rehabilitation of water or ecologically profitable way of intelligence, which can be used also in connection with the development of deposits of methane hydrate (recovery of losses in the development, Department of gas components, guarantee the operational safety of the development of methane).

In the basis of the method is put the task controlled technical implementation shown mechanism of removal of gas dissolved gas post the concentration of saturation, and thus:

a) reduce the risk of removing gases from deep water, for which no longer be affected (the aspect of refurbishment and ecology),

b) effective separation of different gases,

c) the depletion of the water column are relevant for climate gases, such as CO 2-neutral balance, and driving them on the bottom of the reservoir and, thus, long-term removal from the field of water circulation,

d) effective separation from each other is relevant for climate gases such as methane and hydrogen sulfide, and create favorable conditions for their separate technical use,

e) creating technology that will allow the economic exploration of deep clusters gases (e.g. methane) in the waters in the classical sense of field development, but in this case fluid deposits,

f) and thus has implications for the future of habitat on earth.

Through the use of a compressor, which included immediately after the gas traps with gazetteonline valve, it is possible to achieve energy savings in comparison with installation with external made by the compressor. As a rule, compression separated gases needed to, for example, withdraw gases by pipeline with a production platform. This compression is usually started only after the gas production. If the compression is performed after the separation, the compressor it is necessary only to create a differential pressure, which compensates for the difference between the pressure of transportation and the pressure in the gas trap.

Brief description of drawings

Figure 1 - Schematic representation of gravitational gas traps.

Figure 2 - Schematic diagram of a cascade system of separation of phases separation of gas return discharge pipeline for water and zapressovyvajut pipeline for 2 .

1. A device for water depletion gases, including: a system of pipes, which (i) has one exploration pipe for admission of gassy fluid ii) one injection pipe to reverse drain fluid depleted gas, and (iii) at least two gas traps, which are located in the unit so that in gas traps can choose to create pressure, while the gas trap functionally associated with the exploration tube, and discharge tube, so that the fluid from exploration pipes can be sent through the gas trapped in the discharge pipe and the gas trap made with the possibility of connection from your device to receive gas; wherein I) gas traps functionally connected with the exploration tube, and discharge tube, so that the fluid from the exploration of the pipe can be directed over gas traps in the discharge pipe; II) gas traps are located at a certain distance vertically one above the other and relatively fluid objednaneho field and are connected to each other functional so that the rising fluid from the exploration of the pipe enters the first gas trap, which is located on the ground level pressure, which allocated the first gas or gas mixture, then depleted fluid enters the second gas trapped on again given level pressure, which stands out for the second gas/gas mixture, the first pressure and the second pressure differ and (III) individual gas traps, respectively, have functional to connect to one or more devices of reception of gas, or one or more groups gas traps can be connected with the General device of reception of gas.

2. The device of claim 1, characterized in that the device additionally contains at least one adjustable device, which is functionally connected with the system of pipes that in the pipe system can be created in the selected pressure, and thus controlled the flow from the exploration of the gas pipeline through the trap is sent to the discharge pipe.

3. The device according to claim 2, characterized in that, at least, one adjustable device is the coupling, which is functionally connected to the device according to claim 1 so that the diameter can be controlled narrow, in at least one place in the system of pipes.

4. The device according to claim 2, or 3, wherein at least one adjustable device is the turbine.

5. The device is one of claims 1 to 3, characterized in that the pressure can be created in one, several or all of the gas traps by positioning appropriate gas traps on the height above benaulim fluid water Deposit.

6. The device according to claim 4, wherein the selected pressure can be created in one, several or all of the gas traps by positioning appropriate gas traps on the height above benaulim fluid water Deposit.

7. The device is one of claims 1 to 3, 6, wherein one, several or all of the gas traps are located below the water level.

8. The device according to claim 5, wherein one, several or all of the gas traps are located below the water level.

9. The device is one of claims 1 to 3, 6, 8, wherein the pipe system, at least in part, covered with a hydrophobic material.

10. The device according to claim 5, wherein the pipe system, at least in part, covered with a hydrophobic material.

11. The device according to claim 7, wherein the pipe system, at least in part, covered with a hydrophobic material.

12. Method for selective depletion of fluid water deposits gases and/or gas mixtures, which includes the following operations: a) receiving objednaneho fluid, b) the establishment of suitable first of parameters of pressure due to the controlled rise of the fluid in which the first gas and/or gas mixture are separated from the fluid and pass to the gas phase, c) transfer fluid in the gas trap and the separation of the gas phase from the rest of the fluid, the pressure in the gas trap created due to selective control selected depths, d) if necessary, the translation of separated gas and/or gas mixture in the device of reception of gas, e) at least one-time repetition of the operations b)-d), and consequently are other parameters pressure through selective control selected depths at which separates another gas and/or gas mixture, f) return depleted fluid.

13. The method indicated in paragraph 12 notable that the gas trap opozicionerov in depth so that the desired gas significant part enriched in the gas trap, then the maximum share of unwanted gas is separated in gas phase due to the ratio of the vapor pressure to the set pressure of the gas phase.

14. The method according to PP or 13 wherein the desired gas is methane (CH 4 ), and unwanted gas is carbon dioxide (CO 2 ) and/or hydrogen sulphide (H 2 S).

15. The way one of PP, 13, wherein the gravitational gas traps are positioned at a height such that SN 4 , 2 and/or H-2 S may selectively separated from each other.

16. The method according to 14, wherein the gravitational gas traps are positioned at a height such that SN 4 , 2 and/or H-2 S may selectively separated from each other.

17. The method according to PP or 13, wherein the unwanted gas is 2 , and unwanted gas zapressovyvajut at a suitable depth of fluid water field.

18. Use of your device by one of claims 1 to 11 or way through one of p-17 for preventive cleaning water.

19. Use of your device by one of claims 1 to 11 or way through one of p-17 for the extraction of gas from the fluids that are stored in the waters.

20. Use of your device by one of claims 1 to 11 or way through one of p-17 for the extraction of gas from the fluidised fields with the specified purity.