Method of underground gas storage operation
FIELD: oil and gas industry.
SUBSTANCE: invention is related to the area of oil and gas industry and intended for operation of underground gas storage (UGS) operation. At UGS with arranged producers with storage collector opening cyclic injection of natural gas is made with creation of its buffer and active volume and extraction of the gas active volume. In process of the UGS operation carbon dioxide in injected to the lower part of the storage thus replacing natural gas in the buffer volume. At the end of natural gas extraction cycle the boundary line of carbon dioxide and natural gas reaches the lower openings in the perforation interval of the producers.
EFFECT: invention ensures increase in active volume of stored natural gas in the UGS and reduction of costs for formation of the buffer volume.
The invention relates to the field of oil and gas industry and is intended for the operation of underground gas storages (UGS).
The known method of operation of the underground storage of natural gas in reservoirs, including the injection of the buffer gas volume and cyclic injection and selection of the active gas volume, and after the extraction/injection of the active gas volume determine the value of the current reservoir pressure in the storage, when the value of this pressure is below the minimum/maximum design pressure in the reservoir additionally inject the inert gas to the extent that the increase in the value of the current reservoir pressure to the design values, the inert gas using nitrogen, carbon dioxide or any other gas that does not contain components that can react with equipment and the medium reservoir (a utility model Patent of Ukraine # 40544, 10.04.2009).
The main disadvantage of this method is that during the operation of UGS need a certain amount of inert gas (e.g. carbon dioxide)required for one-time downloads and maintaining UGS design values of reservoir pressure.
The technical task of the invention is to increase the active volume of stored natural gas in underground storage facilities, the decline in the cost of educating its buffer volume and disposal of carbon dioxide as industrial waste.
The technical problem is solved due to the fact that in the method of operation of the underground storage of natural gas, including the construction of wells with the opening of reservoir storage, cyclic injection into the natural gas storage facilities with the creation of the buffer and the active volume, the selection of the active volume of natural gas and injection into storage of carbon dioxide with the replacement of a part of the buffer volume of natural gas during operation of underground gas storage the total amount of carbon dioxide pumped so that at the end of cycles of selection in natural gas boundary carbon dioxide and natural gas in storage reached the lower intervals of the opening of the reservoir development wells, used for gas extraction.
The invention consists in the following.
Underground storage of natural gas (USG) create in depleted gas or oil fields or in geological structures, the collector of which is filled with water. UGS operation is cyclic injection of natural gas into the reservoir geological structures through constructed wells with achievement values of reservoir pressure, not more than the maximum allowable pressure, which depends on a number of geological factors (hermet the durability of the tires of the geological structure, the depth of the structure, the activity of the surrounding aquifer basin and others) and the selection of natural gas from the storage facilities to the consumer as needed. In UGS in the selection process of natural gas remains a certain amount, depending on geological, technological and other reasons, known as the buffer gas. In UGS always have some amount of natural gas that cannot be delivered to the consumer. Amount of buffer gas can reach half or more of the total volume of gas in storage after the injection cycle. When using the described invention it is proposed to replace part of the natural gas in the buffer volume in storage at non-hydrocarbonaceous gases such as carbon dioxide (CO2). Sources of such gases can serve gases, including non-recyclable and polluting the natural environment, such as smoke, gases, exhaust gases and other
Carbon dioxide is different from natural gas (methane) is significantly greater density and compressibility, so that during its injection into UGS can be initially assume a high speed separation of carbon dioxide and natural gas. To accelerate the process of separation of gases and creating in the storage buffer gas volume due mainly to carbon dioxide serves CO2to download in the lower part of the UGS.
Created in UGS artificial reservoir of natural gas to ora in the selection of gas is developed, and when the gas injection is restored, the bottom can postulates produced water. Because carbon dioxide has a higher density and, in addition, a higher viscosity compared to methane, the buffer amount of CO2in UGS plays the role of a gas piston between formation water and stored natural gas, which prevents premature breakthrough of produced water to production wells in the selection of natural gas and reduces losses due to solubility in formation water in the case of direct contact with it.
Furthermore, it is known that the gas CO2has a much greater solubility in water than methane. So at 40°C the solubility of CO2is 1, and CH4- 0,016 (grams of gas per 1 kg of water). Therefore, for injection into storage of carbon dioxide in the contact area of natural gas with water to a significant portion of the carbon dioxide will dissolve in water to form weak metastabile carbonic acid (H2CO3), and in the selection of natural gas from underground storage facilities with decreasing reservoir pressure carbon dioxide will again return into the gas phase, displacing natural gas production wells.
To produce the injection of carbon dioxide, preferably at the stage of injection of natural gas into underground storage facilities, so for the time UGS to the stage of selection of natural gas is C UGS was stratification of carbon dioxide and natural gas. As injection wells CO2in UGS can be used are available, for example, observation wells, which are linked (perforation interval) reservoir Geology for underground gas storage in contact with formation water, or special wells, specially constructed for this purpose.
The greatest efficiency of the described invention is achieved in UGS, created on the basis of depleted gas fields to gas mode of operation, in which at the time of selection of the gas does not have time to react and move in the pore space of reservoir storage reservoir water. In such UGS ratio of volumes stored in the underground storage of natural gas at the end of the injection buffer and its size is almost equal to the ratio of pressures at the end of the injection and after the selection of gas, so there is a possibility of replacement of natural gas in the buffer volume equal to the pore volume of the storage facilities (including pressure) from the bottom to the perforated interval of wells used at the end of the sampling cycle natural gas.
An example implementation of the method.
There UGS generated in the depleted gas field gas mode of operation (with low formation water). The maximum reservoir pressure at the end of the injection cycle natural gas (PC) is 10 MPa, the minimum reservoir pressure the s at the end of the sampling cycle gas from underground storage facilities (P O)required for gas supply to the consumer, is 5 MPa. The volume of the pore volume UGS (VP100 million m3, reservoir temperature T=320 K. the Ratio of the pore volume of storage from the plane of the bottom holes of the perforated interval of wells used at the end of the sampling cycle gas until the tires UGS to all of UGS is 0.4. Stored natural gas in storage composition is predominantly methane.
Determine the volume of gas (VCH4), which can be stored in this storage, and the amount remaining in storage after gas sampling, i.e., the amount of buffer gas
VCH4=VP·PC·TFP/Z·MP·PCT=100·10·293/0,89·320·0,1=10288 million m3,
where Z - factor cimemas and methane at the end of the injection cycle (Z=0,89) and selection (Zo=0,93) gas at the respective formation conditions; TST, PCT - standard temperature (293 K) and pressure (0.1 MPa).
From the above calculation shows that the amount of buffer gas in storage is 0.48 (4923/10288) of the total volume of stored gas, and the volume of active gas - 5365 million m3.
The proposed method is pumped into the lower part of the underground storage of carbon dioxide so that at the end of the sampling cycle gas its upper border has reached the plane of the bottom holes of the perforated interval of wells, i.e., for our conditions the amount of CO2at the end of the sampling cycle gas will occupy in UGS 0,6 his entire pore volume.
Determined the amount of CO2we can upload in storage:
VCO2=0,6·VP·PO·TFP/ZCO2·MP·PCT=0,6·100·5·293/0,8·320·0,1=3434 million m3,
where ZCO2=0,8 - compressibility factor CO2with a formation pressure of 5 MPa.
According to the found value of defined volume of the pore space storage occupied by CO2at the end of the cycle gas injection:
where ZCO2=0,4 - compressibility factor CO2with a formation pressure of 10 MPa.
The rest of the pore space UGS will take gas (methane)in the volume of stored gas will be:
From this value the buffer gas volume will be:
and active (8745-1969)-6776 million m3.
Thus, UGS with the described settings you have the option to increase the amount of active gas 5365 million m3before 6776 million m3and the amount of buffer gas to reduce 4923 million m3until 1969 million m3. In addition, the proposed method allows to bury 3434 million m3carbon dioxide.
In case of impossibility injection total volume of carbon dioxide per cycle, this operation can be implemented for several cycles of gas injection, while according to the method described in example implementations of the present invention is determined by the volume of the pore space storage occupied by CO2on each cycle of gas injection and volume of the injected natural gas with a maximum value of the injected carbon dioxide at a certain cycle gas injection and the corresponding volumes of stored and active natural gas in underground storage.
Using the proposed method of operation for UGS significantly reduced the volume conservation of the natural gas to create its buffer values, increase the active volume of storage and use, in addition, there is a possibility of disposal (burial) of significant amounts dioxide in the of Lerida or other gases, polluting the natural environment.
A method of operating the underground storage of natural gas, including the construction of wells with the opening of reservoir storage, cyclic injection into the natural gas storage facilities with the creation of the buffer and the active volume, the selection of the active volume of natural gas and injection into storage of carbon dioxide with the replacement of a part of the buffer volume of natural gas during operation of underground gas storages of carbon dioxide pumped for several cycles so that at the end of cycles of selection in natural gas boundary carbon dioxide and natural gas in storage reached the bottom holes of the perforated interval wells collectors used for gas sampling.
FIELD: oil-and-gas industry.
SUBSTANCE: invention can be used in permafrost regions with hydraulically isolated lenses of underground smelt water bearing sand collectors, cryopag (CP), for burial of drilling wastes (DW). Proposed method comprises drilling of one injection well in CP and at least one CP relieving well. Besides, it includes pressure pre-decrease in CP by forcing water-sand pulp via said CP relieving well. Decreased pressure stabilised in injection well, uniform mix of drilling wastes and at least 10 wt. % of crushed ice made from sea water or water pumped from CP with additional of the mix of fluid hydro geological indicator (HGI). Note here that drill wastes are continuously subjected to audio frequency vibrator effects nearby suspended tubing shoe. Injection is continued unless HGI traces appear in pulp forced from relieving well. Then, drilling waste injection into CP, their vibration and pumping of pulp from CP are terminated to eliminate RW. For burial of extra volume of drilling wastes, another RW is constructure to go on injecting of drilling wastes via the same IW with their vibration and application of another RW.
EFFECT: ecologically safe and efficient process.
2 cl, 1 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: in compliance with this method, seam is subjected to cycling, every cycle including gas injection therein with subsequent gas withdrawal. Cycling includes at least 10 cycles. Current seam pressure
EFFECT: simplified control, higher safety and reliability.
FIELD: oil-and-gas industry.
SUBSTANCE: proposed method comprises construction of wells with exposure of geological structure with pods and pool cap, injection of gas into said structure to force formation water downward from pool cap with prevention of gas escape from the boundaries of geological structure and gas extraction from underground storage (UGS) top section. Note here that availability of superhigh-seam-pressure formation water deposits with dissolved and/or dispersed gas is checked in region with geological structure intended for underground gas storage. Production wells are made with exposure of said deposit, water with dissolved and/or dispersed gas is extracted there through and bypassed into aforesaid geological structure. Gas extraction from UGS is carried out after extraction of dissolved and/or dispersed gas from water and their immiscibility. Water with dissolved and/or dispersed gas is bypassed from superhigh-seam-pressure geological structure is carried out as pressure in UGS decreases owing to gas extraction.
EFFECT: use of dispersed and dissolved gas in abyssal aquifers.
1 ex, 1 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to environmental protection against man-made contaminants, hothouse gases and power source synthesis. In compliance with proposed invention, this method comprises isolation of aquifer with, preferably, with cropout and feed area as, for example, a river, lake, sea with total active filtration conditions. At least one local trap is isolated in isolated bed. Selected aquifer and local trap are prepared for commercial use with definition of isolated aquifer water chemical composition and that of rocks by core sample. Carbon dioxide is injected to isolated aquifer via one injection well located on aquifer feed zone side to allow downstream of injected carbon dioxide in aquifer. Catalytic reaction of polycondensation synthesis of injected carbon dioxide and water to form hydrogen, oxygen and methane homologues.
EFFECT: higher efficiency of recovery for replenishment of hydrocarbons stores and development of new oil and gas deposits.
11 cl, 4 dwg
SUBSTANCE: proposed storage comprises reinforced concrete tank mounted on the bed of compacted soil and heat-isolation layer and having vertical sidewalls, said being surrounded by pliable layer at outer side surface and heat- and water-insulated from liquefied natural gas. Storage shaft is equipped with pipelines to fill said storage with said gas and its vapors and to discharge the latter therefrom. Said shaft extending from reinforced concrete tank to surface is equipped with tight hatches and staircase. Tank top is buried in the heat-insulation material layer. Note here that tank top features cross-section decreasing towards earth surface and is shaped to truncated cone and connected with said shaft by sealed flange joint. Aid tank top with flange joint are arranged at decreased spacing from frozen soil bottom surface.
EFFECT: simplified design.
FIELD: oil and gas industry.
SUBSTANCE: operating method of underground gas storages involves intermittent injection of gas by compressors, which is supplied from a main gas line through production and injection wells of an underground gas storage to a reservoir bed under pressure exceeding formation pressure; further extraction of gas from the underground storage for further gas supply to the main gas line. The above extraction from the underground storage and its supply to the main gas line is performed in a compressor mode that is performed till pressure in the reservoir bed reaches the value excluding allowable well water flooding. With that, a suction gas line of compressor is connected to a gas extraction pipeline from the underground gas storage, and a discharge gas line of compressors is connected to the main gas line.
EFFECT: improving operating efficiency of an underground gas storage.
FIELD: oil and gas industry.
SUBSTANCE: invention refers to a method for making a low-permeability screen in porous medium at underground gas storage in porous reservoir beds and can be used in oil and gas producing industry. According to the invention, first, required volumes of solutions are determined in interwell spaces; the amount of 0.5-0.55 of design volume of spike solution and spike solution itself are pumped subsequently to injection wells till gases appear in a relief well; after that, design volumes of the solution and gas, which provide minimum required width of a screen, are pumped to the unloading well; waste gas of compressor stations is used as gas for creation of a screen. Nonflammable and/or inert gases are used as gases for creation of the screen.
EFFECT: increasing the screen continuity, reducing the flow rate of foaming agent solution and consumed energy for pumping-in and pumping-out, economy of natural gas and improvement of environmental situation in the underground gas storage location area.
3 cl, 6 tbl, 4 dwg
FIELD: packing industry.
SUBSTANCE: invention relates to the method of carbon dioxide (CO2) storage in a porous and permeable underground reservoir bed) and in particular, to the method for injection of CO2 into a hydrocarbon reservoir for its storage. The concept of the invention is as follows: the method includes the following stages: (a) extraction of a produced fluid flow from a development well, which contains produced hydrocarbons, water and CO2; (b) direction of the produced fluid flow to a process facility, where a steam phase flow is separated from this flow, containing carbon dioxide and volatile hydrocarbons; (c) compression of the produced steam phase flow to the pressure above the maximum pressure, when two phases of gas and liquid may coexist, for the composition of the produced steam phase flow; (d) cooling of the compressed flow with formation of the cooled flow in a dense phase condition; (e) direction of the CO2 flow towards the injection equipment, which arrives from the side and may be in a liquid phase or in a supercritical condition; (f) mixing of the cooled flow from the stage (d) with the flow of CO2 arriving from the side to form a combined flow, which represents a flow of a dense phase substance; and (g) injection of the specified combined flow into the hydrocarbon reservoir via an injection well.
EFFECT: increased efficiency of the method.
22 cl, 2 dwg
SUBSTANCE: invention relates to making underground reservoirs in rock salt formations. Reservoir is profiled using concentrically arranged tubes to lift brine, feed water and production pipes. Thereafter, water feed pipe is withdrawn to feed water feed column composed of flexible water feed pipe. Then, reservoir shape is corrected by feeding solvent at reservoir correction point via gap between brine lift tube and flexible water feed pipe of said column. Additionally, device comprises water feed column with flexible water feed pipe ropes arranged in symmetry about is cross-section and passed through rings rigidly secured to flexible pipe at regular spacing to connect flexible pipe bottom end with auxiliary winches.
EFFECT: expanded operating performances.
2 cl, 2 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to underground storage and reservation system of LNG for its accumulation and distribution to the consumer. LNG US is located below the ground level 1 at the elevation preventing the freezing of ground surface at the most long-term estimated storage of LNG. It is blocked off and protected along the perimeter from ground mass with a concrete wall of "wall in ground" type 2. It includes reinforced-concrete tank 5 located at the bottom from compacted ground 3 and heat-insulating intermediate layer 4, which is enveloped on external side surface with soft intermediate layer 6, and on the inner side it is covered with layers of heat insulation 7 and waterproof insulation 8 from LNG. LNG US is equipped with process shaft 9 with pipelines 10, which comes out of reinforced-concrete reservoir to ground surface 1, tight hatches 11 and stairs 12. Top of concrete reservoir is filled with a layer of light heat-insulating material 13. Vertical wall of reinforced-concrete reservoir 5 is made of single-type elements of constant curvature in the form of solid reinforced-concrete units 14 of constant section with surfaces 15 adjacent to each other. Along the perimetre of end surfaces 15 of reinforced-concrete blocks 14 and their centre there made are grooves of rectangular section with tightening horizontal and vertical 18 reinforcement installed in them (vertical 17 and horizontal 18 tightening reinforcement rods).
EFFECT: use of the invention ensures reliability of horizontal tightening of reinforced-concrete blocks; simplifying the construction procedure of side walls of reservoir; improving construction quality and operating reliability of LNG US.
FIELD: oil and gas extractive industry.
SUBSTANCE: method includes performing a test pumping of liquid waste into absorbing well before operational pumping, while changing flow step-by-step. From equation of absorption base hydrodynamic parameters are determined for calculation of predicted coefficients of operation characteristics of absorbing well and reserve well. During operational pumping of liquid waste together with thermometry along absorbing well shaft, registration of actual pressures and flow on pump devices, actual pressures on mouth in tubing pipes of absorbing well, actual pressures on face are additionally registered in absorbing well as well as pressures on mouth in behind-pipe space, actual loss at mouth in behind-pipe space, actual loss of waste on mouth, actual positions of face well, upper and lower limits of absorption range from well mouth. In reserve well actual pressures on face are registered, as well as actual positions of liquid level from reserve well mouth, upper and lower limits of absorption range. Prediction coefficients are compared for operation characteristics of absorbing well and reserve well to actual coefficients. 9 conditions of hydrodynamic bed conditions at reserve well and absorbing well are considered during pumping of waste. Specific actions of operator on each condition are described.
EFFECT: higher reliability and trustworthiness.
FIELD: mining industry.
SUBSTANCE: method includes compressing gas at compressor station to required feed pressure, and utilization of drop liquid, containing drops of compressor oil and gas, before gas-distributing substation with following pumping of gas into well. Utilization of drop liquid is performed via slanted cylindrical separator of centrifugal type and deep chemical cleaning block in form of two parallel-placed absorbers, operating alternately with replacement of processed absorbents. Separator and two absorbers are mounted at tank for collecting compressor oil.
EFFECT: higher efficiency.
2 dwg, 1 tbl
FIELD: gas, oil, oil refining and other industries.
SUBSTANCE: invention relates to building and operation of underground reservoir in stable rocks, for instance, soluble salt deposits. Method includes delivery of water and putting out brine along water feed and brine lifting pipes placed one inside the other, charging and storing of gas in underground reservoir. After brine lifting, reservoir is dried and then is filled up with alternating layers of absorbent and inert porous material, volume ratio 2:1, delivered along clearance between water feed and brine lifting pipes. Brine lifting pipe is perforated in lower part in height of reservoir and it is installed in lower part of reservoir. Difference between angles of repose of absorbent and inert material does not exceed 10 degrees. This done, reservoir is filled with gas delivered along perforated brine lifting pipe.
EFFECT: increased productive volume of reservoir owing to sorption of gas on surface of absorbent, reduced cost of gas storing.
FIELD: mining industry.
SUBSTANCE: method includes driving a mine for cleaning sump and connecting it to sump in such a way, that mine soil for cleaning sump in place of connection is placed at level of shaft bottom, construction of water collector, located outside the shaft, and its connection with mine for cleaning sump, mechanized cleaning of sump. Transporting slope is driven to level of sump cleaning. Then water collector is driven. Mine for cleaning sump is driven with deflection towards water collector. Sump cleaning is performed by delivering spillage along transporting slope.
EFFECT: simplified operations, lower laboriousness.
6 cl, 5 dwg
FIELD: construction of underground reservoirs in rock salt.
SUBSTANCE: according to proposed method, hydrodynamic coupling is formed between casing tube strings to force gaseous nonsolvent from one well into the other. Solvent is delivered along suspended strings of tubes of first well, and brine is taken out along suspended strings of tubes of second well until gas pressure is built on head of first well required for setting gas -brine interface to new stage of rock dissolution, and maintaining of preset thickness of insulating layer of gaseous nonsolvent in top of dissolution stage in process of formation of first underground reservoir of ground is carried out at corresponding pressure rise on head of second well obtained by control of delivery of solvent and taking out of brine.
EFFECT: reduced consumption of gas at building underground reservoirs.
FIELD: transport and storage devices, particularly for building underground reservoirs.
SUBSTANCE: method involves placing adjusting pipe string bottom of directionally drilled well in horizontal position at well outlet; arranging preparation underground excavation for design tunnel reservoir height at initial stage of rock solution between casing and adjusting pipe strings of directionally drilled well; ejecting non-solvent in casing pipe strings along with maintaining non-solvent-brine interface in upper part of preparation excavation or in the case of stepped rock solving at level of each underground tunnel reservoir stage forming; maintaining non-solvent-brine interface in vertical well at level or above level of non-solvent-brine interface of preparation excavation.
EFFECT: increased efficiency of underground tunnel building.
FIELD: construction of underground reservoirs in rock salt.
SUBSTANCE: method involves obtaining solvent by mixing brine with sweet water by supplying low-mineralized solvent from one reservoir under construction having the lesser volume of excavated cavity; solving rock along with maintaining predetermined flow rate of sweet water and conditioned (saturated) brine to be removed; discharging non-conditioned (low-mineralized) brine for following resaturation from above underground reservoir under construction having the lesser volume of excavated cavity; serially finishing construction of underground reservoirs of the group; constructing one or several following reservoirs of above storage facility and uniting the reservoirs with ones under construction.
EFFECT: increased efficiency of storage facility due to improved rationality of rock solution in reservoir group.
FIELD: liquid storage, particularly building underground reservoirs for liquid in soluble rock.
SUBSTANCE: method involves solving rock in several levels, wherein vertical preparation mine is preliminary formed before each layer solving. Natural gas is used as nonsolvent. Gas-brine interface is provided and maintained above top of level to be developed and natural gas is injected in vertical preparation mine. Then interface border is lowered to above top or below it. After level development the interface is increased and maintained above top of next upper level to be developed. All above operations are repeated at the next level.
EFFECT: reduced time of reservoir building and increased reliability.
3 cl, 4 dwg
FIELD: automatic control of underground reservoir construction in soluble sedimentary rock, particularly underground liquid or gaseous hydrocarbon deposit constriction and underground industrial and radioactive waste storage.
SUBSTANCE: device comprises automatic measuring system for brine parameters determination. The measuring system comprises measuring unit with sensors to be installed directly in brine line and recording unit. Device also includes multi-channel receiving converter for information gathering and control unit, as well as ultrasound sensors linked to flowmeter. Information gathering unit output is associated with PC.
EFFECT: possibility of device usage for several underground reservoirs construction, extended range of technological parameters to be controlled during reservoir construction and increased accuracy of brine concentration determination.
2 cl, 1 dwg
FIELD: oil-producing industry; gas-production industry; methods of construction and elimination of the earth storages-collectors of the boring wastes.
SUBSTANCE: the invention is pertaining to the field of the environmental protection, in particular, to the methods of construction and elimination of the earth storages-collectors of the boring wastes at completion of the oil-and-gas boreholes construction. The technical result of the invention is erection of the effective water-insulating screen, reduction of the time of evaporation of the water from the liquid phase of the boring wastes, decrease of the material inputs for realization of the method. The method of construction and elimination of the earth storages-collectors of the boring wastes provides for the digging of the ditch in the mineral soil, screening the ditch bottom and walls for the water insulation, filling-up of the earth storages-collector with the boring wastes, lamination of the boring wastes by settling into the thickened and liquid phases, the liquid phase pumping out, evaporation of the water from it, covering over the thickened stage with the mineral soil, conduct formation of the water-insulating screen by hydrophobization of the soil of the ditch bottom and walls by the soil impregnation in depth of 5-15 cm with the 0.1-1.0 % density microemulsion spontaneously formed at addition in the water of the reactant РДН-1 -concentrate of the asphaltic-resinaceous and paraffinic components of petroleum in the volatile hydrocarbon solvent with the subsequent compaction and aging. After the pumping out the liquid phase is sputtered over the flattened section of the land allocated for construction of the borehole, on which they preliminary put the mineral soil of 25-30 cm thick taken from the walled ditch. After the water evaporation it is used for hydrophobization of the soil together with the dried up boring wastes by sputtering of the above indicated microemulsion at its consumption of 5-10 l per m2 of the ground surface. Then the indicated soil is removed and fully is used for covering of the thickened phase of the boring wastes in the earth storages-collectors of the boring wastes.
EFFECT: the invention ensures erection of the effective water-insulating screen, reduction of the time of evaporation of the water from the liquid phase of the boring wastes, decrease of the material inputs for realization of the method.
2 ex, 3 dwg