CN116255137B - Storage type drilling pressurized water test pressure and flow in-situ test system and method - Google Patents
Storage type drilling pressurized water test pressure and flow in-situ test system and method Download PDFInfo
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- CN116255137B CN116255137B CN202310170018.5A CN202310170018A CN116255137B CN 116255137 B CN116255137 B CN 116255137B CN 202310170018 A CN202310170018 A CN 202310170018A CN 116255137 B CN116255137 B CN 116255137B
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- 238000012360 testing method Methods 0.000 title claims abstract description 131
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 238000005553 drilling Methods 0.000 title claims abstract description 54
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 30
- 238000003860 storage Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 22
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000008859 change Effects 0.000 claims abstract description 22
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 19
- 238000010998 test method Methods 0.000 claims abstract description 7
- 239000002775 capsule Substances 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 29
- 238000013461 design Methods 0.000 claims description 7
- 239000002352 surface water Substances 0.000 claims description 7
- 208000005189 Embolism Diseases 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/117—Detecting leaks, e.g. from tubing, by pressure testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention belongs to the technical field of drilling water pressure test equipment, and discloses a storage type drilling water pressure test pressure and flow in-situ test system and a storage type drilling water pressure test method, wherein a waterway channel comprises a first overflow channel, a second overflow channel, a third overflow channel and a liquid turbine flowmeter impeller, and a drill rod connecting bin is used for connecting a drill rod; the circuit channel comprises a Hall switch sensor, a flash memory, a lithium battery and a piezoresistive pressure sensor. According to the invention, the impeller of the liquid turbine flowmeter is designed in the eccentric water flow channel, square waves are output according to the magnetic field change generated by rotation of the impeller, and the Hall switch sensor is converted into flow velocity after receiving the square waves; the piezoresistive pressure sensor is arranged at the bottom end of the electronic component bin, senses parameters such as water pressure and water temperature of the drilling test section, acquires timely data according to set acquisition start-stop time, frequency and the like, automatically stores the timely data into the flash memory, and meets the parameter functions of in-situ actual measurement of the water pressure and the water temperature of the drilling water pressure test section.
Description
Technical Field
The invention belongs to the technical field of drilling pressurized water test equipment, and particularly relates to a storage type drilling pressurized water test pressure and flow in-situ test system and method.
Background
At present, in the geological investigation of water conservancy and hydropower engineering, in order to analyze the influence of underground water on a rock mass, a rock mass in-situ pressurized water penetration test is usually carried out in a drilled hole. In the specific method, during the drilling process or after the drilling is finished, a plug is used for separating a hole section with a certain length from the rest of holes Duan Ge, water is sent into a test section at an orifice by adopting different pressures, and the pressure and the flow rate of water flowing into a drill string are tested by using equipment such as a pressure gauge, a flow meter and the like arranged at the orifice, so that the water permeability of a rock mass is calculated and is called Lv Rongfa.
The pressure calculation adopts different methods according to the installation position of the pressure gauge, and when the pressure gauge is arranged on a pressure measuring pipe communicated with a test section, the pressure loss is not considered in the test section; when the pressure gauge is arranged on the water inlet pipe for measuring pressure, the pressure loss of the pipeline needs to be considered. The pressure loss of the pipeline is related to a plurality of factors such as pipe diameter, pipe wall roughness, length, joint specification, flow velocity, gravity acceleration and the like, the drill rod materials and the degree of freshness are different, and the friction coefficient (lambda) of the drill rod string is also different. At present, the inner diameter of a drill rod produced at home is inconsistent with the inner diameter of a locking joint, the specifications of the drill rod and the inner surface roughness are different, a certain fixed value is usually obtained according to experience when the lambda value is calculated, and the accuracy of test results is influenced. The related test research shows that the pressure loss of the pipeline increases sharply along with the increase of the flow, and the pressure loss mainly occurs at the joint part of the drill rod, and the joint part is a part which is often easy to neglect, so that the error of the pressure value of the test section is larger. For conventional drilling, the pipe diameter can be calculated by adopting a pipe loss empirical formula when the pipe diameters are consistent, and can be determined by adopting actual measurement data when the pipe diameters are inconsistent; for deep holes or horizontal drilling, because of the difficulty in installing a pressure measuring pipe, a pressure gauge is generally installed on a ground surface water inlet pipe in practical engineering application, and as the drilling depth increases, the pipe loss calculation or test error increases, so that the pressure loss is an important factor affecting the test precision of a pressurized water test.
The flowmeter is generally installed on the ground surface, and when the pressurized water test result is calculated, the drill string is often supposed to have good sealing performance, and no water flow loss exists in the drill string. In recent years, as the number of ultra-deep holes of hydraulic and hydroelectric engineering increases, when a pressurized water test is carried out in the holes, the number of drill rod locking joints is increased along with the lengthening of a drill rod string, the risk of joint water leakage is also increased, and flow loss is another important factor affecting the test data precision of the pressurized water test.
Along with the development of national economy and the improvement of science and technology, the implementation of accurate investigation in the field of water conservancy and hydropower engineering geology is a trend, and the drilling and water pressure test is an important means for acquiring the hydrogeology data of the rock stratum. At present, the pressure loss of a pipeline is determined by installing a pressure test tube or adopting an empirical formula or a field test. In general, the borehole water pressure test assumes no flow loss, but as the hole depth increases, the pressure measuring pipe is difficult to install, and calculation errors of pipeline pressure loss and flow loss are larger, so that test data are distorted. The market lacks equipment for accurately testing parameters such as water pressure, flow and the like of a drilling pressurized water test section with stable performance.
Through the above analysis, the problems and defects existing in the prior art are as follows: according to the existing drilling water pressure test method, as the drilling hole depth increases, because in-situ installation of a pressure measuring pipe and a flowmeter of a test section is extremely difficult, the surface installation instrument is generally adopted for carrying out pressure, flow and other parameter tests, so that calculation errors of pipeline pressure loss and flow loss are larger, and test data are distorted.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a storage type drilling pressurized water test pressure and flow in-situ test system and method.
The invention is realized in such a way that a storage type drilling pressurized water test pressure and flow in-situ test system comprises:
the waterway channel comprises a first overflow channel, a second overflow channel, a third overflow channel and a liquid turbine flowmeter impeller, wherein a drill rod connecting bin, the liquid turbine flowmeter impeller and a capsule connecting bin are sequentially connected from top to bottom, the drill rod connecting bin is used for connecting a drill rod, and a cavity is formed in the middle of the drill rod connecting bin to form the first overflow channel; the second flow passage is an eccentric flow passage arranged at the side part of the electronic component bin, and the third flow passage is arranged at the upper part of the capsule connecting bin;
the circuit channel comprises a Hall switch sensor, a flash memory, a lithium battery and a piezoresistive pressure sensor which are arranged in the electronic component bin and are sequentially connected from top to bottom.
Further, the Hall switch sensor is arranged at the side end of the impeller of the liquid turbine flowmeter and above the data timing reading and storing circuit board;
the flash memory is arranged on the surface of the data timing reading and storing circuit board;
the piezoresistive pressure sensor is arranged at the bottom end of the electronic component bin;
the lithium battery is arranged between the data timing reading and storing circuit board and the piezoresistive pressure sensor;
the lithium battery is respectively connected with the data timing reading and storing circuit board, the Hall switch sensor, the data reading/charging interface and the piezoresistive pressure sensor.
Further, the piezoresistive pressure sensor senses the change of the water parameters in the device through a circular hole reserved at the bottom end of the electronic component bin, and tests the parameters such as the pressure, the temperature and the like of the water in the device;
further, rectangular diversion bins are arranged above and below the electronic component bin and the eccentric overcurrent channel, and the drill rod connecting bin and the capsule connecting bin are assembled into an integral device through the supporting sealing piece and the inner hexagon bolts.
Further, the impeller of the liquid turbine flowmeter is arranged at the lower part of the upper rectangular diversion bin, is communicated with the upper rectangular diversion bin and the second flow passage and is used for testing the forward flow and the reverse flow of water flow in the second flow passage.
Further, a cover plate is arranged at the upper end of the electronic component bin, and a sealing ring is arranged at the joint; the cover plate surface is provided with a data reading/charging interface which is connected with a Hall switch sensor, a data timing reading and storing circuit board, a lithium battery and a piezoresistive pressure sensor, and the data reading/charging interface is connected with a user terminal through a data line and is set as a socket interface for charging and extracting test data.
Further, when the impeller of the liquid turbine flowmeter works, a magnetic field is generated to change, a square wave is output, and the side Hall switch sensor is used for sensing the change of the square wave, so that the purpose of testing the water flow in the drilling hole is achieved. The design limit bearing water flow pressure of the liquid turbine flowmeter is 20MPa.
Further, the drill rod connecting bin is provided with a threaded male connector which is directly connected with the drill rod, and the capsule connecting bin is provided with a threaded female connector which is directly connected with devices such as a embolism capsule.
Further, the impeller of the liquid turbine flowmeter is arranged in the bracket, and the bracket is installed along the clamping groove arranged on the inner wall of the device and is fastened at the fixed position of the bracket.
Another object of the present invention is to provide a method for in-situ testing of pressure and flow rate of a stored-type borehole pressurized water test, the method for in-situ testing of pressure and flow rate of a stored-type borehole pressurized water test comprising:
(1) Water flow path: the surface water pump starts water delivery, a drill rod column inner diameter hole, a drill rod connecting bin, a drill rod joint, a first overflow channel, an upper rectangular diversion bin, a liquid turbine flowmeter impeller, a second overflow channel, a lower rectangular diversion bin, a piezoresistive pressure sensor, a third overflow channel and a capsule connecting bin. The specific description is as follows:
(1) starting the surface water pump to pump water, and injecting water flow into the hollow drill string under the action of water pressure;
(2) the water flow in the drill string is pressed into the storage type drilling water pressure test pressure and flow in-situ test device (drill pipe connecting bin) under the action of pressure and dead weight;
(3) the water flow enters the liquid turbine flowmeter impeller through the first flow passage and the upper rectangular flow guiding bin, the liquid turbine flowmeter impeller starts to work under the action of water power, a square wave is output after the magnetic field is changed, and a Hall switch sensor in the electronic component bin of the device can timely output (store form) the water flow value through the perceived square wave change;
(4) after the water flow leaves the impeller of the liquid turbine flowmeter, the water flow enters the lower rectangular diversion bin from the second flow passage, and then flows out of the device through the third flow passage, the capsule connecting bin and the like.
(2) Current path: the device is arranged to collect start-stop time and frequency, the device is arranged on a test hole section, the surface water pump starts to deliver water, the impeller of the liquid turbine flowmeter starts to work, the Hall switch sensor senses the change of square waves of the square waves and then converts the square waves into flow velocity, the piezoresistive pressure sensor senses and accurately tests parameters such as water pressure, temperature and the like, and the next test (hole) section is carried out according to the designed start-stop time, frequency and the like. The specific description is as follows:
(1) the earth surface presets the acquisition start-stop time and acquisition frequency of the device, and the lithium battery is charged in advance;
(2) installing the device, connecting the device with a drill string, and then placing the connected device into a to-be-tested part in a drill hole;
(3) one side of the water flow channel is provided with water to be pumped, the impeller of the liquid turbine flowmeter starts to work, a square wave is output after the magnetic field is changed, and the Hall switch sensor senses the change of the square wave and then converts the square wave into a water flow value.
(4) After the water flow enters the second through-flow channel, the piezoresistive pressure sensor senses the change of the parameters of the water body in the device and accurately tests the parameters such as the pressure, the temperature and the like of the water body in the device.
(5) The data are collected by the Hall switch sensor, the piezoresistive pressure sensor and other elements and then automatically stored (stored in the flash memory), then the next test section is carried out until the test task in the drill hole is completed, the device is taken out, and the user terminal and the data reading/charging interface are connected to extract the stored data.
In combination with the technical scheme and the technical problems to be solved, the technical scheme to be protected has the following advantages and positive effects:
first, aiming at the technical problems in the prior art and the difficulty in solving the problems, the technical problems solved by the technical proposal of the invention are analyzed in detail and deeply by tightly combining the technical proposal to be protected, the results and data in the research and development process, and the like, and some technical effects brought after the problems are solved have creative technical effects. The specific description is as follows:
1. in the invention, a liquid turbine flowmeter impeller is designed in an eccentric water flow channel, square waves are output according to the magnetic field change generated by rotation of the impeller, and the Hall switch sensor converts the square waves into flow velocity after receiving the square waves.
2. According to the invention, the piezoresistive pressure sensor is arranged at the bottom end of the electronic component bin, the parameters such as the water pressure and the water temperature of the drilling test section are sensed, timely data are acquired according to the set acquisition frequency, and the timely data are automatically stored in the flash memory, so that the functions of actually measuring the parameters such as the water pressure and the water temperature of the drilling water pressure test section are satisfied.
3. The invention can be used for shallow holes, deep holes or ultra-deep holes, whether the conventional drilling tool or rope drilling tool drilling process is adopted, different drilling calibers (commonly used 60-150 mm diameter) are adopted, the hydraulic pressure type single plug or double plug hydraulic pressure test technical scheme is adopted, and the adaptability is wide.
4. The invention has reasonable design, novel structure, convenient processing, reliable performance, simple operation, reliable and accurate test data; the testing precision is high, parameters such as the in-situ water pressure value, the flow and the temperature of the test section are directly obtained, and the pipeline pressure loss and the flow loss do not need to be considered; each electrical equipment is internally provided with a 16-bit unique identifier, and the error of test data is small; the equipment is simple to install, and the pressure and flow of the test section are tested without additionally installing a pressure test tube; the application range is wide, and the drilling tool not only can be applied to conventional drilling, but also can be applied to drilling with different depths and types such as deep holes, ultra-deep holes, horizontal holes and the like; the working efficiency is high, and the test data is automatically collected and stored without manual recording.
Secondly, the technical scheme is regarded as a whole or from the perspective of products, and the technical scheme to be protected has the following technical effects and advantages:
1. the invention has novel design scheme, and the two channels such as the waterway, the circuit and the like are independently designed and are not mutually interfered, so that the fault rate in the using process of the device is reduced, and the possibility is provided for continuous improvement of the device.
2. The invention has strong operability, convenient and simple operation, the upper part is connected with the conventional drill rod, and the lower part is connected with the pressurized water test capsule to perform the pressurized water test work in the hole;
3. the device has novel structural design, small volume, compact structure, light weight and convenient disassembly;
4. the invention has strong applicability and is suitable for conventional drilling and water pressing test in industries such as water conservancy and hydropower, municipal administration, traffic, construction engineering and the like; the device is also suitable for kilometer-level ultra-deep hole and high-pressure water pressing tests, and continuous and sectional water pressing can be realized during drilling; the method is also suitable for other engineering geological permeability test tests such as grouting holes, hydraulic fracture test holes, in-hole side pressure tests and the like.
Drawings
FIG. 1 is a schematic diagram of a storage type borehole water pressure test pressure and flow in-situ test system according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of a flow rate test provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a pressure and temperature test provided by an embodiment of the present invention;
in the figure: 1. the drill rod is connected with the bin; 2. a drill pipe joint; 3. an O-shaped sealing ring A;4 a first flow-through channel; 5. an inner hexagon bolt A; 6. an O-shaped sealing ring B; 7. a rectangular diversion bin is arranged; 8. an O-shaped sealing ring C; 9. a data read/charge interface; 10. a cover plate; 11. a cover plate set screw; 12. an O-shaped sealing ring D; 13. a clamping groove; 14. a liquid turbine flow meter impeller; 15. a bracket; 16. the bracket is fixedly positioned; 17. a hall switch sensor; 18. a circuit board for regularly reading and storing data; 19. a second flow-through channel; 20. a flash memory; 21. an electronic component bin; 22. a lithium battery; 23. a waterproof resin; 24. an O-shaped sealing ring E; 25. a piezoresistive pressure sensor; 26. an O-shaped sealing ring F; 27. a lower rectangular diversion bin; 28. an inner hexagon bolt B; 29. a third flow-through channel; 30. an O-shaped sealing ring G; 31. the capsule is connected with the bin.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the storage type drilling pressure and flow in-situ test system provided by the embodiment of the invention comprises a drill pipe connecting bin 1, an electronic component bin 21, a liquid turbine flowmeter impeller 14, a hall switch sensor 17, a flash memory 20, a piezoresistive pressure sensor 25, a lithium battery 22 and a capsule connecting bin 31; the drill rod connecting bin 1, the liquid turbine flowmeter impeller 14 and the capsule connecting bin 31 are sequentially connected from top to bottom to form a device waterway channel; the Hall switch sensor 17, the flash memory 20, the lithium battery 22 and the piezoresistive pressure sensor 25 are connected from top to bottom to form a device circuit channel;
the drill rod connecting bin 1 is used for connecting an upper drill rod, and a cavity is formed in the middle of the drill rod connecting bin to form a first through-flow channel 4; the supporting sealing piece (O-shaped sealing ring A, O type sealing ring B) and the inner hexagon bolt A5 are connected with the upper rectangular diversion bin 7 to form a flow passage;
the electronic component bin 21 is hollow to form a central cavity, and a Hall switch sensor 17, a flash memory 20 and a piezoresistive pressure sensor 25 are installed in the central cavity; the Hall switch sensor 17 is arranged at the side end of the impeller 14 of the liquid turbine flowmeter and above the data timing reading and storing circuit board 18; the flash memory 20 is arranged on the surface of the data timing reading and storing circuit board 18; the piezoresistive pressure sensor 25 is arranged at the bottom end of the electronic component bin 21; the piezoresistive pressure sensor 25 senses the change of the water parameters in the device through a circular eyelet reserved at the bottom end of the electronic component bin 21, and tests the parameters such as the pressure, the temperature and the like of the water in the device; the O-shaped sealing ring E24 and the waterproof resin 23 between the piezoresistive pressure sensor 25 and the lithium battery 22 jointly play a role in sealing the gap between the electronic component bin 21 and the lower rectangular diversion bin 27.
The lithium battery 22 is arranged between the data timing reading and storing circuit board 18 and the piezoresistive pressure sensor 25; the lithium battery 22 is respectively connected with the data timing reading and storing circuit board 18, the Hall switch sensor 17, the piezoresistive pressure sensor 25 and the data reading/charging interface 9 to form a circuit channel of the device;
in the invention, the side part of the electronic component bin 21 is provided with an eccentric flow passage, which is a second flow passage 19; the impeller 14 of the liquid turbine flowmeter is arranged in the bracket 15, and the bracket 15 is arranged along the clamping groove 13 arranged on the inner wall of the device and is fastened at the bracket fixing position 16; the impeller 14 of the liquid turbine flowmeter is arranged at the lower part of the upper rectangular diversion bin 7, and is communicated with the upper rectangular diversion bin 7 and the second flow passage 19, so that the flow values of forward and reverse water in the flow passage (the water reverse flow value in a test hole is mainly convenient for recording the rock mass water backflow phenomenon in the pressure-reducing process of the pressurized water test) can be tested; the upper part of the capsule connecting bin 31 is provided with a third through-flow channel 29; the first through-flow channel 4, the second through-flow channel 19, the third through-flow channel 29 and the liquid turbine flowmeter impeller 14 form a waterway channel of the device;
in this example, rectangular guide bins (specifically, an upper rectangular guide bin 7 and a lower rectangular guide bin 27) are respectively arranged above and below the electronic component bin 21 and the eccentric flow passage, and the drill rod connecting bin 1 and the capsule connecting bin 31 are assembled into an integral device through supporting sealing pieces (specifically, an O-shaped sealing ring A3, an O-shaped sealing ring B6, an O-shaped sealing ring C8, an O-shaped sealing ring F26 and an O-shaped sealing ring G30) and fastening pieces (specifically, an inner hexagon bolt a and an inner hexagon bolt B);
the upper end of the upper rectangular diversion bin 7 is connected with the drill pipe joint 2 by adopting a threaded screw thread, and an O-shaped sealing ring A3 is arranged at the connection part; the capsule connecting bin 31 at the lower end of the lower rectangular diversion bin 27 is connected with devices such as capsules by adopting a threaded screw thread, and a sealing ring (O-shaped sealing ring G30) at the joint of the capsule connecting bin 31 plays a role in sealing a gap at the joint of the external devices such as capsules and the like and the capsule connecting bin 31; the inner flow passage of the upper rectangular diversion bin 7 is communicated with the inner passage of the drill rod joint 2; the internal runner of the lower rectangular diversion bin 27 is communicated with the internal channel of the capsule connecting bin 31.
Preferably, a cover plate 10 is arranged at the upper end of the electronic component bin 21, the cover plate 10 and the electronic component bin are connected by a cover plate set screw 11, and a sealing ring (specifically an O-shaped sealing ring D12) is arranged at the joint; the surface of the cover plate 10 is provided with a data reading/charging interface 9; the data reading/charging interface 9 is communicated with the Hall switch sensor 17, the data timing reading and storing circuit board 18, the lithium battery 22 and the piezoresistive pressure sensor 25 to form a circuit channel of the device; the data reading/charging interface 9 is connected with the user terminal by a data line and is set as a socket interface for charging and extracting test data.
In this example, when the impeller 14 of the liquid turbine flowmeter works, a magnetic field is generated to change, and a square wave is output, the hall switch sensor 17 at the side end can sense the change of the square wave, and the hall switch sensor 17 converts the square wave into a flow velocity after receiving the square wave, namely a water flow value of the test section; the design limit bearing water flow pressure of the liquid turbine flowmeter impeller 14 is 20MPa.
Preferably, the device can set the acquisition start-stop time and the acquisition frequency at will according to the drilling depth and the duration of the pressurized water test, and the actual measurement data support self-acquisition and storage.
In this example, each electrical device in the device is built with 16 unique identifiers, and the lithium battery 22 supports repeated charging and multiple test sections.
The drill rod connection bin 1 is provided with a threaded male connector which can be directly connected with an upper drill rod, the drill rods of different types are selected as corresponding drill rod connectors 2, and the capsule connection bin 31 is provided with a threaded female connector which can be directly connected with devices such as a lower embolism capsule, and the like, so that the installation is convenient.
The upper part of the storage type drilling pressure and flow in-situ test system is required to be connected with a drill rod joint 1 matched with a drill rod of the storage type drilling pressure and flow in-situ test system; when the hydraulic single-embolism method or the double-embolism method is selected for testing, the tail end of the device is matched with a corresponding embolism capsule (a shaping product), and the working principle of the invention is as follows:
(1) Water flow path: the surface water pump starts water delivery, a drill rod inner diameter hole, a drill rod connecting bin 1, a drill rod joint 2, a first flow passage 4, an upper rectangular flow guide bin 7, a liquid turbine flowmeter impeller 14 (a forward flow value is tested by orifice pressurization, a reverse flow value can be tested by pressure relief after a pressurized water test is finished), a second flow passage 19, a lower rectangular flow guide bin 27, a piezoresistive pressure sensor 25, a third flow passage 29 and a capsule connecting bin 31.
(2) Current path: setting device to collect start-stop time and frequency, installing the device in a test hole section, starting a surface water pump to send water, starting a liquid turbine flowmeter impeller 14 to work, converting the square wave change of the square wave change into flow velocity after a Hall switch sensor 17 senses the square wave change, sensing and accurately testing parameters such as water pressure, temperature and the like by a piezoresistive pressure sensor 25, testing according to the designed start-stop time, frequency and the like, and carrying out the next test (hole) section.
In order to prove the inventive and technical value of the technical solution of the present invention, this section is an application example on specific products or related technologies of the claim technical solution.
1. The technical scheme of the invention not only can meet the conventional drilling water pressure test, but also can solve the accurate test of the kilometer-level ultra-deep drilling in-situ water pressure test, and fills the blank of the domestic and overseas kilometer-level ultra-deep drilling in-situ water pressure test technology.
2. The invention has novel design scheme, and the two channels such as the waterway, the circuit and the like are independently designed and are not mutually interfered, so that the fault rate in the using process of the device is reduced, and the possibility is provided for continuous improvement of the device.
3. According to the technical scheme, 16-bit unique identifiers are arranged in each electrical equipment, so that the reliability and the precision of the scheme are enhanced.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In order to more clearly illustrate the advantages of the storage type drilling pressurized water test pressure and flow in-situ test system and method compared with the existing drilling pressurized water test method by using equipment such as a surface orifice installation pressure gauge, a flowmeter and the like, the two technical schemes are compared, the two technical schemes are applied to a water diversion project ultra-deep hole drilling pressurized water test in China, and the comparison results are shown in the table 1:
TABLE 1
As can be seen from the table, compared with the existing drilling pressure test method by using equipment such as a surface orifice installation pressure gauge and a flowmeter, the storage type drilling pressure test pressure and flow in-situ test system and method disclosed by the technical scheme of the invention have the advantages of less investment of personnel and time, high efficacy and high test data precision.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.
Claims (6)
1. The in-situ test method for the pressure and the flow of the stored drilling water pressure test is characterized by comprising the following steps of:
the waterway channel comprises a first overflow channel, a second overflow channel, a third overflow channel and a liquid turbine flowmeter impeller, wherein a drill rod connecting bin, the liquid turbine flowmeter impeller and a capsule connecting bin are sequentially connected from top to bottom, the drill rod connecting bin is used for connecting a drill rod, and a cavity is formed in the middle of the drill rod connecting bin to form the first overflow channel; the second flow passage is an eccentric flow passage arranged at the side part of the electronic component bin, and the third flow passage is arranged at the upper part of the capsule connecting bin;
the circuit channel comprises a Hall switch sensor, a flash memory, a lithium battery and a piezoresistive pressure sensor which are arranged in the electronic component bin and are sequentially connected from top to bottom;
rectangular diversion bins are arranged above and below the electronic component bin and the eccentric flow passage, and the drill rod connecting bin and the capsule connecting bin are assembled into an integral device through the supporting sealing piece and the inner hexagon bolts;
the impeller of the liquid turbine flowmeter is arranged at the lower part of the upper rectangular diversion bin, is communicated with the upper rectangular diversion bin and the second flow passage and is used for testing the flow values of the forward and reverse water bodies in the second flow passage;
the upper end of the electronic component bin is provided with a cover plate, and the joint is provided with a sealing ring; the surface of the cover plate is provided with a data reading/charging interface which is connected with a Hall switch sensor, a data timing reading and storing circuit board, a lithium battery and a piezoresistive pressure sensor, and the data reading/charging interface is connected with a user terminal through a data line and is set as a socket interface for charging and extracting test data of the storage type drilling water pressure test pressure and flow in-situ test device;
(1) Water flow path: the orifice is provided with pumping water, a drill stem inner diameter hole, a drill stem connecting bin, a drill stem joint, a first overflow channel, an upper rectangular diversion bin, a liquid turbine flowmeter impeller, a second overflow channel, a lower rectangular diversion bin, a piezoresistive pressure sensor, a third overflow channel and a capsule connecting bin; the specific description is as follows:
(1) starting the surface water pump to pump water, and injecting water flow into the hollow drill string under the action of water pressure;
(2) the water flow in the drill string is pressed into the storage type drilling water pressure test pressure and flow in-situ test device under the action of pressure and dead weight;
(3) the water flow enters the liquid turbine flowmeter impeller through the first flow passage and the upper rectangular flow guide bin, the liquid turbine flowmeter impeller starts to work under the action of water power, a square wave is output after the magnetic field is changed, and the Hall switch sensor can timely output the water flow value of the device through the perceived square wave change;
(4) after the water flow leaves the impeller of the liquid turbine flowmeter, the water flow enters the lower rectangular diversion bin from the second flow passage and flows out through the third flow passage and the capsule connecting bin;
(2) Current path: setting device to collect start-stop time and frequency, mounting the device on test hole section, opening pump water at hole mouth, starting operation of impeller of liquid turbine flowmeter, converting square wave change sensed by Hall switch sensor into flow rate, sensing and accurately testing water pressure and temperature parameters by piezoresistive pressure sensor, and testing according to designed start-stop time and frequency to make next test hole section; the specific description is as follows:
(1) the earth surface presets the pressure and flow in-situ test device for the storage type drilling pressurized water test, the acquisition start-stop time and the acquisition frequency, and the lithium battery is charged in advance;
(2) connecting with a drill string, and then placing the connected device into a to-be-tested part in a drill hole;
(3) one side of the water flow channel is provided with water to be pumped, the impeller of the liquid turbine flowmeter starts to work, a square wave is output after the magnetic field is changed, and the Hall switch sensor senses the change of the square wave and then converts the square wave into a water flow value;
(4) after the water flow enters the second through-flow channel, the piezoresistive pressure sensor senses the change of the water body parameter in the device and accurately tests the water body pressure and temperature parameter in the device;
(5) the Hall switch sensor and the piezoresistive pressure sensor element acquire data and then automatically store the data, and then the next test section is carried out until the test task in the drill hole is completed, and the data can be extracted by taking out the connection data reading/charging interface.
2. The in-situ test method for pressure and flow of the stored drilling pressurized water test according to claim 1, wherein the Hall switch sensor is arranged at the impeller side end of the liquid turbine flowmeter and above a data timing reading and storing circuit board;
the flash memory is arranged on the surface of the data timing reading and storing circuit board;
the piezoresistive pressure sensor is arranged at the bottom end of the electronic component bin;
the lithium battery is arranged between the data timing reading and storing circuit board and the piezoresistive pressure sensor;
the lithium battery is respectively connected with the data timing reading and storing circuit board, the Hall switch sensor, the piezoresistive pressure sensor and the data reading/charging interface.
3. The method for testing the pressure and the flow in situ of the stored drilling water pressure test according to claim 1, wherein the piezoresistive pressure sensor tests the pressure and the temperature parameters of the water in the stored drilling water pressure test device through the change of the water parameters in the circular hole sensing device reserved at the bottom end of the electronic component bin.
4. The in-situ test method for pressure and flow of the stored drilling pressurized water test according to claim 1, wherein the impeller of the liquid turbine flowmeter generates a magnetic field change to output a square wave when working, the side hall switch sensor is used for sensing the change of the square wave and converting the square wave into a flow rate, namely the flow value of the water body of the test section, and the design limit bearing water flow pressure of the liquid turbine flowmeter is 20MPa.
5. The method for testing the pressure and the flow of the stored drilling pressurized water test in situ according to claim 1, wherein the drill rod connecting bin is provided with a threaded male connector directly connected with the drill rod, and the capsule connecting bin is provided with a threaded female connector directly connected with a embolism capsule device.
6. The method for in-situ testing of pressure and flow of a stored borehole pressurized water test according to claim 1, wherein the impeller of the liquid turbine flowmeter is placed in a bracket, and the bracket is installed along a clamping groove arranged on the inner wall of the device and is fastened at a fixing position of the bracket.
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| CN116255137B true CN116255137B (en) | 2023-09-26 |
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| CN210533450U (en) * | 2019-06-28 | 2020-05-15 | 大庆油田有限责任公司 | Turbine signal acquisition device |
| US11384958B1 (en) * | 2021-02-04 | 2022-07-12 | Tankless Technologies, Inc. | Tankless water heater with a high-accuracy response-curve flowmeter |
| CN115165701A (en) * | 2022-06-17 | 2022-10-11 | 中国电建集团北京勘测设计研究院有限公司 | Low-water-level drilling single-loop double-plug high-pressure water pressure test device and method |
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2023
- 2023-02-27 CN CN202310170018.5A patent/CN116255137B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257073B1 (en) * | 1998-06-19 | 2001-07-10 | Samsung Electronics Co., Ltd. | Cyclone turbine flowmeter and control system therefor |
| US6487919B1 (en) * | 2001-11-06 | 2002-12-03 | Breed Automotive Technology, Inc. | Turbine flow monitoring device |
| CN102080533A (en) * | 2010-12-22 | 2011-06-01 | 杭州瑞利声电技术公司 | Novel flow sensor module |
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| CN210533450U (en) * | 2019-06-28 | 2020-05-15 | 大庆油田有限责任公司 | Turbine signal acquisition device |
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| CN116255137A (en) | 2023-06-13 |
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