Method of forming reservoirs in rock salt formations and device to this end

FIELD: transport.

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 Thereafter, water feed pipe is withdrawn to feed water feed column composed of flexible water feed pipe.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

 

The invention relates to the creation of underground storage tanks in deposits of rock salt and can be used when creating underground storage for gaznefteprodukt.

There is a method of construction of underground reservoirs in rock salt and device for its implementation (patent RF №2213033, publ. 27.09.2003). The method consists in the creation of preparatory development by expanding the uncased wellbore in the whole interval of laying an underground reservoir by mechanical destruction of the breed while filing solvent in the area of its destruction and drainage of brine on the surface. It is then scour preparatory development with the filing of a solvent and selection of brine on a suspended working columns of pipes before reaching the design capacity of the underground reservoir. For implementing the method proposed device containing reinforced cutters cutting elements moving along the guide interacting with the drill body and provided with a hydraulic cylinder. Cutting elements made in the form of pairs of interconnected rods, equipped with a system of channels that are hydraulically connected with the internal cavities of the guide and the drill body. The device can be easily folded and transported into the wellbore and to the surface.

The disadvantage of this method is the narrow scope and the inability to adjust the shape of the tank.

There is a method of education of the camera in the hole (patent RF №2242612, publ. 20.12.2004). Directed scour camera perform with the formation separated by jumpers inclined branches not less than two horizontal radial levels with the education of their grid by volume of the generated camera, and the oblique branches of the same level shifted in a certain way relative to the boundary level, and bridges between the branches destroy starting from the lower level by the impulsive forces acting on the rock mass through the borehole or branch.

The disadvantage of this method is the narrow scope and the inability to adjust the shape of the tank.

Known flexible submersible pipe (patent RF №2245476, publ. 27.01.2005). Flex contains several sections pulpoprovoda pipes, equipped with cameras with ball check valves and interconnected tubular diaphragms. On the outer surface poluprovodnikov pipeline installed pressurization device can be moved by pipeline. In the sections pulpoprovoda pipe shell is made of layers syntactica and polyurethane with respect to the layer thicknesses (10-4):1. Pressure device acts on the tubular aperture is (mcm), pushes the slurry from the bottom of the section next above the check valve, is moved on the outer surface of the pipeline to the next upstream tubular diaphragm.

The disadvantage of this method is the narrow scope and the inability to adjust the shape of the tank.

There is a method of creating reservoirs in rock salt formations adopted for the prototype in terms of method (patent RF №2236579, publ. 20.09.2004). The method involves drilling vertical wells in the salt deposits, service wells, equipment its concentrically located resolutely, vodopada and operational pipes, flow through the annular space between vodopada pipe and resolutely pipe under pressure of the solvent. In the annular space between vodopada tube and the operating tube serves under pressure herstorical create preparatory production, affect salt in the upper part of the tank along the perimeter of the tangentially oriented jets of solvent and select the brine to resolutely pipe. After the establishment of the preparatory working well introduce additional pipe, the lower end of which is before descending into the well perforined length equal to the height of the tank, and fix this participant is e elastic tight casing. After that, the gap between more and resolutely pipe in flexible airtight membrane serves solvent in an amount equal to the amount of the produced salt. The maximum amount of elastic hermetic shell is chosen equal to the design volume of the tank.

The disadvantage of this method is the narrow scope and the inability to adjust the shape of the tank.

Known flexible submersible slurry pipeline (RF patent No. 2157438, publ. 10.10.2000). The pipeline contains several sections pulpoprovoda pipes, pivotally interconnected, further provided with a hermetic shell, coaxially mounted on polipoprotein pipe in case of coincidence of the centers of gravity of the shell and tube and satisfy the following inequality:

kg/m3

where MSharnVSharn, McmVcm, MTrVTr, MaboutVaboutrespectively the mass (kg) and volume (m3) hinge, slurry, tube and shell, ρin- the density of water, and the shell is made of syntactica with a specific gravity of 0.5-0.6 t/m3and rigidly connected parts of the coupling, covering the pipe across the diameter.

The disadvantage of this device is the inability to use it to adjust the shape of the tank.

And the known method of a hydraulic borehole mining of salt and device for its implementation taken as a prototype of the device (patent RF №2078212, publ. 27.04.1997). The method includes opening the salt reservoir drilling wells, waterproofing breeds blood installing casing, placing in the borehole hydroporinae of the projectile, the supply of water under pressure, erosion and dissolution of salt with simultaneous generation of the resulting brine to the surface and the formation of the purifying chamber and management of the forming chamber by compressed air. Prior to the formation of the purifying chamber in the walls of the borehole are preparatory slotted production, for the period of penetration of preparatory workings of the hydrodynamic level of brine in the well support lower jetting section of the bullet. The device for implementing the method includes transportation of becoming, recolored, bottom cap with jetting section. In the annular gap of the rod and realprovide installed retaining ring, the surface of which has an entrance aperture of a giant, combined with its bypass holes. Becoming and recolored can move relative to each other.

The disadvantage of this device is the inability to use it to adjust the shape of the tank a large amount.

The technical result of this method is the expansion of the scope and capabilities of the CDF is ctyroky the shape of the tank.

The technical result of the device is the ability to adjust the shape of the tank a large amount.

The technical result is achieved that the way to create underground reservoirs in rock salt formations, including the drilling and casing of the vertical well, its equipment concentrically located resolutely, vodopada and operational pipe flow under pressure of the solvent, the flow in the annular space between vodopada pipe and operational pipe herstories, the creation of preparatory development, selection of brine with mining stocks of salt in the tank circuit, according to the invention after the end of the testing tank from it extract vatopediou pipe, installing in its place transportation of becoming in the form of a flexible vodopada pipe and adjust the shape of the tank by feeding the solvent in place of the adjustment tank the selection of the brine through the gap between resolutely and flexible vodopada the water-feeding pipe rod.

The technical result is achieved that the device containing concentrically arranged rossopomodoro, vatopediou, performance pipe and additionally transportation of becoming, according to the invention transportation becoming made of flexible vodopada pipes, installed symmetrically Europeana cross-section cables, passed through rings rigidly mounted at regular intervals on a flexible pipe connecting the lower end of the flexible pipe with maneuvering winches.

The way to create underground reservoirs in rock salt formations and device for its implementation are illustrated by the drawings. Figure 1 shows a vertical section of the underground chamber, the step of adjusting the shape of the tank, figure 2 shows the cross section of the device for adjustment, figure 3 shows a longitudinal section of the device for adjustment where:

1 - design the circuit underground reservoir, created, for example, in formations of rock salt;

2 operational path underground tank (roughness of the walls of the vessel - operating losses);

3 - russiapedia pipe;

4 - flexible vodopada the water-feeding pipe rod, for example of polyethylene;

5 - cables that are located symmetrically with respect to the cross-section flexible vodopada pipe 4;

6 - operational pipe;

7 - clamp for rigid fixation of the end of ropes on the lower end of the flexible vodopada pipe;

8 - rings, evenly attached to the clamps 9 along the length of the flexible pipe 4, through which are passed the cables 5;

9 - clamps with rings 8.

The construction of reservoirs in the formations of rock salt and other soluble minerals is accompanied by disturbances is the group of the actual shape of the tank from the project (the so-called operational losses). These losses are formed because of the many geological and technological factors: the presence of insoluble impurities, the anisotropy of the properties of salt, violations of the rules of erosion, etc. Reduction of operational losses possibly due to the local supply of solvent (water) in place of education losses (irregularities in the contour of the tank). The complexity of the local supply of solvent is complicated by the large size of the underground tanks, the height of 600 m, diameter up to 250 m For solving this problem is known solutions with flexible unmanaged vodopodayuschih pipes, which cannot be used to adjust the shape of the tank. The developed solution will solve this problem.

The way to create underground reservoirs in rock salt formations and the device for use in the following way. Work known controlled methods, such as underground dissolution of salts through the well from the surface, the reserves of underground water tank 1 in rock salt formations in the following sequence. Are drilling vertical wells into the formation, which build the tank 1. Produce a casing, equip her concentrically located vodopada, rossopomodoro 3 and 6 operational pipes. Served under the pressure of the solvent and herstorical. Create method guide is oruba preparatory production (in the drawing shown by the dotted line). Studying stocks (create) tank 1. After construction of the reservoir 1 from it extract vatopediou pipe and set in its place transportation of becoming in the form of a flexible vodopada pipe 4 mounted on it along the length of the cables 5, for processing all loss of salt in the project outline. Adjusted operating circuit 2 of the tank 1 by filing a solvent in place of adjustments selection of brine through the gap between resolutely pipe 3 and the pump rod 4. Get project path underground reservoir 1.

The device comprises a concentrically arranged rossopomodoro, vatopediou, performance pipe and advanced transportation became 4. On vodopadom the composition in the form of a flexible vodopada pipe 4 along its entire length with the rings 8, is rigidly fixed to the clamps 9, fix the cable 5. The inner diameter of the rings 8 accept more external diameter of cables 5. Cables 5 connect with maneuvering winches installed on the surface and managed program electronic computing machine. The lower ends of each cable 5 are symmetrically fixed on the cross-section flexible vodopada pipe 4.

The device is used as follows. The coiling and uncoiling of the rope 5 is produced by winches (on the drawing conventionally not shown) command electron-calc is kiteley machine, determining the location of losses according to echolocation and built a digital model of the tank, and is also required for the dissolution amount of water. The cross-sectional area of the cables 5 and their number is determined by analytical, experimental, or experimental-analytical way. The solvent lead directly to the place of education of the losses in the tank 1 with the selection of the brine through the gap resolutely and flexible vodopada pipe. To control the process of adjusting the shape of the tank can be used baggage industrial monitoring and ultrasonic sonar (conventionally in the drawing not shown). As the industrial camera surveillance system can be used INVIZ Pipe with a sensitive camera designed specifically for examinations of large tanks through the small inspection openings. This is made possible through the use of technology autofocus and integrated led lighting.

Application of the method of construction of underground reservoirs in rock salt formations and device for its implementation provides the following benefits:

extension applications;

- possibility of adjusting the shape of the tank of large volume;

- increase the overall efficiency of works on creation of the tanks.

1. The way to create underground rezé is Voinov in rock salt formations, including drilling and casing a vertical borehole, the equipment it concentrically located resolutely, vodopada and operational pipe flow under pressure of the solvent, the flow in the annular space between vodopada pipe and operational pipe herstories, the creation of preparatory development, selection of brine with salt mining stocks in the contour of the tank, characterized in that after the testing of the tank from it extract vatopediou pipe, installing in its place transportation of becoming in the form of a flexible vodopada pipe and adjust the shape of the tank by feeding the solvent in place of the adjustment tank with a selection of brine through the gap between resolutely and flexible vodopada the water-feeding pipe rod.

2. Device to create underground reservoirs in rock salt formations containing concentrically arranged rossopomodoro, vatopediou and operational pipe and additionally transportation of becoming, characterized in that the transportation of becoming made of flexible vodopada pipes, installed symmetrically in its cross-section cables passed through the ring, rigidly fixed at regular intervals on a flexible pipe connecting the lower end of the flexible pipe with maneuvering winches.



 

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