Monitoring device to control underground reservoir construction in soluble salts through boreholes

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.

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The invention relates to the automatic control of the process of creating underground storage tanks, constructed in soluble sedimentary rocks geotechnological method through boreholes, and can be used in the construction of underground repositories for the storage of liquid and gaseous hydrocarbons, as well as in underground disposal of industrial and radioactive wastes little activity.

A device for monitoring the process of creating underground storage tanks in soluble salts, including a set of standard measuring devices (pressure gauges, thermometers, densitometer, flow meters for water and brine), set at the mouth of the technological hole on the water and recolorimage.

The disadvantages of this device are:

periodic visual measurements brine (pressure, temperature, density) over time (3-4 times daily);

- a large error in the determination of the concentration of brine from table data density at different temperatures;

- high probability of introducing errors in the calculation results of the current geometric volume of underground tunnels due to the receipt of insufficient information about the changes in the concentration of brine in time in the process of building an underground reservoir.

The known device (A.S. USSR №175157A1, MCI G 01 N 27/02; RU Patent No. 1681643, MKI G 01 N 27/00, 1995) with remote measurements of oceanic and thermal waters (conductivity, temperature and pressure)used in Oceanographic studies in the mode of sensing of the seas and oceans and operating wells.

The main disadvantage of such devices is the narrow range of measurement of the concentration to 40 g/l salt solutions.

Closest to the claimed technical solution is a device to control the process of creating underground storage tanks in soluble salts through boreholes containing measuring means for determining parameters brines, including the measuring unit with temperature sensor and the density meter, the flow meter is installed together with the measuring unit on recolorimage (Patent RU 2118606 C1 IPC 7 65 G 5/00, publ. 10.09.1998).

The disadvantages of this device are: measurement of individual process parameters unrelated unified data collection and processing, the impossibility of carrying out measurements in an automated mode in real time, a sufficiently high accuracy in determining the concentration of the brine.

The invention solves the problem of providing control and management of the process of creating underground storage tanks in soluble is Amaziah.

The technical result of the implementation of this task is the expansion of the controlled process parameters in the process of creating underground storage tanks in soluble salts through boreholes, provision of operational impact on the process of creating underground tanks developed technological regulations. This increases the accuracy of determining the concentration of the brine, washed masses of salt, increasing the geometric volume of the underground workings in real time.

To achieve the technical result a device for monitoring the process of creating underground storage tanks in soluble salts through boreholes containing a measuring system for determining the parameters of brine that includes a measuring unit with temperature sensor and flow meter installed with a measuring unit on recolorimage. In contrast to the known device (prototype), the measuring unit installed pressure sensors and relative electric conductivity measuring process parameters in an automated mode. Sensors of temperature, pressure and relative electrical conductivity connected to the corresponding inputs of the transmitting transducer of the measuring unit, the output of which through the room the optimum communication and block communication cable is connected to the corresponding input multi-channel receiving transducer block information gathering. The device is also equipped with ultrasonic sensors installed on recolorimage and the United RF cable line of communication with the inlet of the flow meter is connected the output to the input of a multichannel receiving transducer of the above-mentioned block of gathering information, the output unit collect information connected to a personal computer.

Another distinctive feature of the device lies in the fact that when you create a group of underground tanks in soluble salts to the input of the receiving transducer unit to collect information using additional blocks cable connected additional measuring units installed with ultrasonic sensors that are connected to the respective flowmeters, recolorado relevant technological wells created reservoirs.

The drawing shows a diagram of the device for monitoring the process of creating underground storage tanks in soluble salts through boreholes.

In accordance with this scheme the layer of rock salt revealed technological borehole 1, cased and cemented to the surface casing pipe 2. In the well 1 down 3 external and Central 4 suspended pipe string. Monitoring by means of the inventive device is in the process of creating underground expressed ODI 5 through the water in the annular space of the outer 3 and the Central 4 hanging columns of tubes with the displacement of the resulting brine on the Central pillar of the pipe 4 to the surface of the earth. Selected from the underground mine 5 brine then goes into the tank for brine 6.

On the measuring section of realprovide 7 installed ultrasonic sensors 8, is connected to the input of the meter (SLM) 9 via the high-frequency cable 10 together with the sensor unit 11, the temperature, pressure and relative electrical conductivity of the brine, the outputs of which are connected to respective inputs of the transmitting transducer of the measuring unit (IB) 12. The output of the measuring unit (IB) 12 through a connection cable 13 and block cable connection (BCS) 14 is connected with the respective input multi-channel receiving transducer block information gathering (Ufa science BSI) 15, the other input of which is connected through the cable network 16 to the outlet of the flow meter 9. Output (Ufa science BSI) 15 via an interface (RS-232) 17 connected to a personal computer (PC) 18. To the system unit (PC) 18 connected to the printer 19 to document the information received.

When you create a group of underground storage tanks 5 in soluble salts to the input of the multifunctional receiving transducer block information gathering and control blocks 15 through cable connection 13 (BCS-1 BCS-n) connected to a corresponding number of measuring units 12 that are installed with ultrasonic sensors 8 meter 9 on recolorado 7 each technologies the Oh wells created underground storage tanks 5.

The device operates as follows.

Hydrophysical parameters of the brine from the sensors 11 in the measuring block (IB) 12 is converted into a proportional electrical signals received at multifunction transmitting transducer of the measuring unit 12, where they are converted into equivalent binary codes. These codes are written to the output registers of the measuring channels of the sensors 11 and transmitted to the communications unit of the measuring unit 12 where they are converted into serial binary photomanipulating code (PMK). From the output of the measuring unit 12 information in the form of FMF is passed by two-line communication cable 13 (BCS) 14 to a distance of 2500 m Along the line connection from (BCS) 14 in the measuring unit 12 is receiving AC supply voltage (400 Hz). In block (BCS) 14 the information is converted into a serial binary code, and in the format of interface 17 (RS-232) with its output applied to one of the inputs of the multi-block information gathering (Ufa science BSI) 15, designed to service up to five communication channels simultaneously. Using the flow meter 9 the measured flow rate in recolorimage 7 and calculated current average volume flows of brine, as well as increasing the output 5. The flow meter 9 will automatically monitor the health, availability of emergency situations, you is on measuring and diagnostic information on the cable network 16 via the RS-485 in Ufa science BSI 15.

The multi-block information gathering (Ufa science BSI) 15 is connected to a personal computer (PC) 18 through a bidirectional interface, interface standard 17 (RS-232). On request (PC) 18 block (Ufa science BSI) 15 outputs the generated information frame that includes measured and proprietary information about the current values of flow, pressure, temperature and relative electrical conductivity of the brine.

Block (Ufa science BSI) 15 is designed to receive, process and display the received information in decimal, hexadecimal codes, or physical units, output on the graphic recorder current values of measured parameters in analog form through two channels simultaneously. All of the functions for receiving, transforming, and displaying information from a block (Ufa science BSI) 15 are performed in accordance with the developed program.

To provide an automated device developed complex programs. Using a data collection program is the exchange of information between the block (Ufa science BSI) 15 and the PC 18. The program performs the reception codes current values of the parameters of the brine in real time through asynchronous RS-232 interface. On the basis of obtained data the program generates files of measured and calculated parameters with a given resolution are recorded in the memory (PC) 18. Displaying incoming and settlement and the formation on the monitor (PC) 18 is displayed in tabular form. In post-processing program generates reports in tabular and graphical forms for output through the printer 19 on the paper.

An example of a specific implementation of the device.

Device for monitoring the process of creating underground storage tanks in soluble salts through the boreholes tested in Novomoskovsk salt water enterprise NAK "Azot" when creating underground mine No. 17 So Underground development is located at a depth of 850 m In the process of the measuring device system installed on recolorimage 7 diameter 219 mm connecting hole 1 generation No. 17 T tank for brine 6. After cleaning the brine on recolorado 7 were sent for processing to the chemical plant. The device was operated for 4 months in continuous operation. In the process of creating underground tunnels 5 measured temperature, pressure, flow rate and relative electrical conductivity of the brine in his thread. After processing data calculated concentration of the brine, the mass of the washed salt and the current volume of underground excavations 5 for the last time.

At the same time from realprovide 7 samples were taken of the brine. In the chemical laboratory was determined by the salt composition and the average concentration of the brine. On the comparison of the concentrations of brine obtained p and using the claimed device and by analysis of samples to be taken, produced in the chemical laboratory, identified measurement error does not exceed 0.5-1%, which confirms the high efficiency and reliability of the device.

1. Device for monitoring the process of creating underground storage tanks in soluble salts through boreholes containing an automated measuring system parameter definitions brines, including the measuring unit with temperature sensor and flow meter installed with a measuring unit on recolorimage, characterized in that the measuring unit is additionally installed pressure sensors and relative electric conductivity measuring process parameters in an automated mode, with sensors of temperature, pressure and relative electrical conductivity connected to the corresponding inputs of the transmitting transducer of the measuring unit, the output of which through a connection cable and block communication cable is connected to the corresponding input multi-channel receiving transducer block information gathering the device is equipped with ultrasonic sensors installed on recolorimage and the United RF cable line of communication with the inlet of the flow meter is connected the output to the input of a multichannel receiving transducer of the above-mentioned block collection of information is AI, when this output block collect information connected to a personal computer.

2. The device according to claim 1, characterized in that when you create a group of underground tanks in soluble salts to the input of the receiving transducer unit to collect information using additional blocks cable connected additional measuring units installed with ultrasonic sensors that are connected to the respective flowmeters, recolorado relevant technological wells created reservoirs.



 

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