TWI698574B - Separate plugging hydraulic test measurement system and method - Google Patents

Abstract

The present invention is a separate plugging hydraulic test measurement system and method, including dual plugging equipment, integrated recording equipment, water injection equipment, connection equipment, and separate pressure control equipment. It is mainly designed to separate for downhole double plugging hydraulic test The configuration of pressure control equipment and pipelines allows the tester to directly control the delivery status of the respective pressures of the upper and lower plugs on the surface, and adjust the intake of any plug when the hole wall state or well diameter changes greatly. There is no need to extract the equipment to the surface for replacement. Three sets of sensors are used to simultaneously observe the water pressure changes before and after the pressure status of the upper and lower plugs are changed, and perform different mode tests with water injection equipment. Therefore, it is possible to effectively improve the efficiency of test execution, obtain more on-site hydrogeological parameters, and strengthen the results of hydrogeological surveys without affecting the labor cost of hydraulic tests.

Description

Separate plugging hydraulic test measurement system and method

The present invention relates to a separate plugging hydraulic test measurement system and method, in particular to the configuration of separate pressure control equipment and pipelines specially designed for the downhole double plug hydraulic test, and the test personnel can directly control the upper and lower seals on the surface The conveying state of the respective pressures of the plugs, and adjust the intake state of any plug when the hole wall state or the well diameter changes greatly. There is no need to extract the equipment to the surface for replacement. The upper and lower seals are simultaneously observed by three sets of sensors The water pressure changes before and after the plug pressure state changes, combined with water injection equipment for different modes of tests, can effectively improve the efficiency of test execution, obtain more on-site hydrogeological parameters, and strengthen the results of hydrogeological surveys without affecting the labor cost of the hydraulic test.

The implementation of the Double Packer Test is a key technology in the hydrogeological drilling investigation of the rock pan site. Different from the conventional technology, the Slug Test or the Lugeon Test, which needs to cooperate with drilling and detect the water permeability of the rock mass in a wide range according to the footage direction. The double plug hydraulic test is mainly carried out after the drilling work is completed. Therefore, it is not limited by this, and it can be used to investigate small-scale geological structures to assist in the identification of anisotropic changes in the flow field caused by the difference in the detailed structure of the aquifer, so as to obtain the hydraulic characteristics of a specific section of the rock mass and provide hydrogeology The foundation of conceptual model establishment and groundwater flow field simulation analysis.

The double-plug hydraulic test is carried out after the drilling work is completed, the double-plug test device is hoisted with the drill pipe to a specific test position to be tested, and then the surface pressure control unit is turned on to make the upper and lower rubber seals The plug is inflated at the same time. After the plug is inflated for a period of time, the barrier of the specific test section in the hole can be completed, and the fissures in this section are temporarily separated from the upper and lower rock formations for the test personnel to change the water pressure or flow rate. Observations and experiments to calculate the hydraulic characteristic parameters of the section.

The upper and lower plugs of the above conventional device are traditionally controlled by a single group of ground pressure equipment to control the pressure delivery state. Therefore, after the ground pressure control unit is activated, the upper and lower plugs will be inflated at the same time. After inflating to a certain pressure value and making the plugging rubber membrane expand against the wall of the hole, the barrier of the test section is completed. The length of the test section covers the length of the water outlet hole and is mostly fixed between 0.5 and 2.0 meters. When the test is over and the ground pressure control unit is closed, the upper and lower plugs will also vent at the same time.

There are four main methods for the general double-plug hydraulic test, including constant flow test method, constant head test method, micro water test method and pressure pulse test method. The choice of test method is determined based on the geological conditions of the test section. The test section of the same test borehole at different depths may have different geological conditions, and different test methods must be used to respond.

Furthermore, because the geological conditions or rock mass structure of the test sections at different depths may be different, one of the four test methods mentioned above must be used to respond. In the conventional technology, the industry has proposed a device for integrating measurement equipment, which can adjust the required test method during the test at will, eliminating the need for equipment lifting and assembly. When there are multiple groups of test sections in the same borehole that need to be tested, the test can be performed section by section from bottom to top.

However, the above-mentioned conventional double-plug hydraulic test and measurement device is a fixed type. The disadvantage is that when the rock formation in the test section is too broken, weak, large sections are trapped in mud, or the well diameter changes drastically, it is easy to cause the rubber film after the plug is inflated. Uneven expansion, or even incomplete barrier, affects the accuracy of the test results. In addition to the loss of representativeness of the obtained parameters, it is also easy to cause excessive expansion of the sealing rubber film and gas explosion, resulting in equipment wear and even damage to the hole wall. Collapse, when it is severe, it is more likely to cause the double-plugging equipment in the hole to be buried. This problem most often occurs in collapsed ground with drag and sliding potential, or muddy rock with poor consolidation and a high percentage of fines. In other words, the conventional technology of the fixed double-plug hydraulic test measurement device is susceptible to failure due to the strength and properties of the rock formation in the test section, and the test cannot be carried out smoothly.

At present, the only countermeasure that can cope with this problem is to lift the test device from the well to the surface for reassembly, remove one set of double plugging equipment to make it a single plugging equipment, and then look for the relative rock mass in the hole. The complete section is subjected to a multi-stage single-sealing hydraulic test, and finally the section hydraulic parameters are estimated by means of progressive deduction. The difficulty of this countermeasure is that the deeper the test depth before lifting is, the more time-consuming and laborious it will be, and the accuracy and representativeness of the estimated results will be poor. It still needs to be matched with other geophysical well logging instruments to record the results, or interactive comparison. More drilling results can be achieved.

Therefore, there is a great need for a separate plugging hydraulic test measurement system and method. The separate pressure control equipment and pipeline configuration are specially designed for the downhole double plug hydraulic test, so that the tester can directly control the upper and lower plugging on the surface. The delivery state of the respective pressures, and adjust the intake state of any plug when the hole wall state or the well diameter changes greatly. There is no need to extract the equipment to the surface for replacement. The upper and lower plug pressures are simultaneously observed by three sets of sensors The water pressure changes before and after the state changes are tested in different modes with water injection equipment. This can effectively improve the efficiency of test execution, obtain more on-site hydrogeological parameters, and strengthen the results of hydrogeological surveys without affecting the labor cost of hydraulic tests, so as to solve all the problems of the above-mentioned conventional technologies.

The main purpose of the present invention is to provide a separate plugging hydraulic test measurement system, including double plugging equipment, integrated recording equipment, water injection equipment, connection equipment, and separate pressure control equipment for hydraulic test measurement.

Double plugging equipment is installed in the test section of the rock pan to send out hydrological change signals. The integrated recording equipment is electrically connected to the double-blocking equipment to receive the hydrological change signal, record the value in the hydrological change signal, determine the measurement mode, record the flow rate and time, and then send a control signal according to the measurement mode, and also generate and transmit The test data is sent to the remote control platform, where the test data includes the value, measurement mode, flow, and time in the hydrological change signal.

The water injection equipment is electrically connected to the integrated recording equipment to receive the control signal and continuously replenish water under the control of the integrated recording equipment. At the same time, it also generates and transmits a signal corresponding to the water injection flow rate. The connection equipment is electrically connected to the double plugging equipment and the integrated recording equipment, and is connected to the water injection equipment through the pipeline. The connecting equipment including the drill rod must be attached with a centimeter scale to facilitate the confirmation of the lowering depth. Separate pressure control equipment is electrically connected to integrate recording equipment and water injection equipment to supply high-pressure gas to the connected equipment.

Specifically, the double plugging device includes an upper plug, a lower plug, a water outlet hole pipe, a first sensor, a second sensor, a third sensor, a pumping device, and a water-proof unit. The upper and lower plugs close the test section. The water outlet pipe with multiple holes can be combined with the connecting device. The upper and lower plugs have openings respectively, so that the upper and lower plugs are connected through the openings. Sleeve and install on the outlet pipe. In addition, the water outlet hole pipe has the functions of preliminary filtering and fouling, and the water-proof unit is arranged at the lower end of the water outlet hole pipe to close the lower end.

The above-mentioned first sensor is arranged between the upper sealing plug and the lower sealing plug, the second sensor is arranged between the upper sealing plug and the connecting device, and the third sensor is arranged between the lower sealing plug and the connecting device. Between the water-proof units, the first sensor, the second sensor, and the third sensor are electrically connected to the integrated recording device to measure individual water level or water pressure changes and generate and emit The first hydrological change signal, the second hydrological change signal, and the third hydrological change signal of the hydrological change signal are then transmitted to the integrated recording device. In addition, the pumping device is electrically connected to the integrated recording device to receive control signals.

Furthermore, the integrated recording equipment includes analog-to-digital converters, computer devices, communication modules, and pressure warning units. The analog-to-digital converters can convert analog hydrological change signals and flow signals into digital hydrological change signals and flow signals, and then transmit To the computer device for recording, and send out control signals and test data based on judging the measurement mode. In particular, the communication module is electrically connected to the computer device for receiving test data and further transmitting to the remote control platform. Furthermore, the pressure warning unit is electrically connected to the digital-to-analog converter to receive the hydrological change signal and generate a pressure warning signal based on it, which is further transmitted to the remote control platform via the analog-to-digital converter and computer device.

The connection device includes an injection pipe and a connector, and the water injection device includes a water storage device, a pipeline, and at least one flow meter.

The injection pipe is connected to the water outlet hole pipe and the connector, and is connected to the pipeline through the connector. The first sensor, the second sensor, the third sensor and the pumping device are electrically connected to the integrated recording equipment through the connector. Water storage equipment is used to store water, and contains a motor, and can be used to replenish water according to control signals. The pipeline is connected to the storage equipment and the connection equipment. The flowmeter is installed on the pipeline to measure the water flow and send it out. Flow signal to integrated recording equipment.

Furthermore, the separate pressure control equipment includes a pressure source, a pressure line, a first pressure control unit, and a second pressure control unit. The pressure source stores high-pressure gas, and the pressure line connects the pressure source and the connector. In particular, the first The pressure control unit and the second pressure control unit have switch functions. They are both installed on the pressure pipeline, and are electrically connected to the integrated recording device to individually receive the control signal to turn on the high pressure gas to flow into the injection pipe and the water outlet pipe, or close High-pressure gas.

In addition, the first sensor, the second sensor, and the third sensor can detect pressure changes and respectively send the first pressure change signal, the second pressure change signal, and the third pressure change signal to the integrated recording device. The integrated recording device can generate control signals based on the first pressure change signal, the second pressure change signal, and the third pressure change signal, so that the first pressure control unit and the second pressure control unit can be turned on or off individually to achieve the purpose of separate control .

In addition, another object of the present invention is to provide a separate plugging hydraulic test measurement method, including the following steps S1, S10, S20, S30, S35, S40, S50, S55, S57, S60, S70, and S75 to respond to In the case of excessive difference in the strength of the borehole wall, the hydrogeological parameters of the downhole rock formation of the drilling hole can be estimated, and the separated plugging hydraulic test measurement can be realized.

In step S1, a double plugging device equipped with a separate plugging hydraulic test and measuring system, an integrated recording device, a water injection device, a connecting device, and a separate pressure control device are equipped.

In step S10, the placement process is performed, and the dual plugging equipment, integrated recording equipment, water injection equipment, connection equipment, and separate pressure control equipment are hoisted to the test position to be tested by using the drill rod, and the core record of the test position to be tested is used. Preset the plugging pressure warning value, and the plugging pressure warning value is used to confirm that the plug blocking test position is within the required safety pressure range, and the plugging equipment is installed in the rock tray within the test position to be tested In the test section.

In step S20, the first pressure control unit and the second pressure control unit are turned on to release the high-pressure gas in the pressure source to the upper and lower plugs for inflation, and then the upper and lower plugs are closed for testing Section, then, start the water injection equipment to inject water, while additionally applying a fixed water pressure, and use the first sensor, the second sensor and the third sensor to record and measure the changes in the water pressure.

In step S30, the pressure warning unit is turned on. In step S35, observe whether the pressure warning unit returns a pressure warning signal, if the pressure warning unit does not return a pressure warning signal, go to step S40, and if the pressure warning unit returns a pressure warning signal, go to step S50.

In step S40, the integrated recording equipment is used to obtain the hydrogeological parameters of the test section. The hydrogeological parameters include the change of water level, the change of water volume, and the amount of water level release, and the change of water level corresponds to the constant flow mode. The change corresponds to the constant water head mode, and the change of the water level drop corresponds to the slight water test mode, and then step S60 is entered to end the operation.

In step S50, it is determined whether the pressure warning signal indicates that the pressure is abnormal in the lower plug, if the pressure is abnormal in the lower plug, go to step S55, and if the pressure is not abnormal in the lower plug, then go to step S70.

In step S55, the lower plug is first manually decompressed, and the hydrogeological parameters of the rock formation below the test section are measured, and then step S57 is performed to manually decompress the upper plug to observe the rock formation above the test section. The pressure accumulation record or the pressure dissipation record is used to estimate the water permeability trend of the rock formation above the test section, and then the step S60 is entered to end the operation.

In step S70, first manually decompress the upper plug, and then use the constant flow method or the micro-water test method to estimate the hydrogeological parameters of the rock formation above the test section, and then proceed to step S75 to manually decompress the lower plug. The pressure accumulation record or the pressure dissipation record of the rock formation below the test section is observed to estimate the water permeability trend of the rock formation below the test section, and then step S60 is entered to end the operation.

Therefore, the present invention improves the air intake system of the plugging hydraulic equipment, breaking through the limitation of the conventional fixed double-plugging hydraulic test and measuring device, making the overall operation more flexible and flexible, plus the remote control interface, making decision-makers Communication with on-site test personnel is smoother, and test quality reliability is strengthened.

The following is a more detailed description of the implementation of the present invention in conjunction with the drawings and component symbols, so that those who are familiar with the art can implement it after studying this manual.

Please refer to the first figure, which is a schematic diagram of the separated plug hydraulic test measurement system according to the first embodiment of the present invention. As shown in the first figure, the separated plugging hydraulic test measurement system 1 of the first embodiment of the present invention includes a double plugging device 10, an integrated recording device 30, a water injection device 50, a connecting device 70, and a separate pressure control device 90, Used for hydraulic test measurement.

Specifically, the dual plugging device 10 is installed in the test section 520 of the rock plate 500, especially the drilling area 550 of the test section 520, to send out a hydrological change signal corresponding to the area, and integrate the recording device 30 It is electrically connected to the double plugging device 10 to receive the hydrological change signal, record the value contained in the hydrological change signal, and determine the measurement mode, such as constant flow mode, constant head mode or micro water test mode, and record the flow rate , Time, and send out control signals according to the measurement mode. At the same time, it also generates and transmits test data to the remote control platform 37, where the test data includes the value, measurement mode, flow, and time in the hydrological change signal.

Further, the water injection device 50 is electrically connected to the integrated recording device 30 to receive control signals, and under the control of the integrated recording device 30, transmit output water to realize the function of replenishing water, and generate and transmit a flow signal corresponding to the water injection flow rate. . In addition, the connection device 70 is electrically connected to the double plugging device 10 and the integrated recording device 30, and is connected to the water injection device 50 through a pipeline. Furthermore, the separate pressure control device 90 is electrically connected to the integrated recording device 30 and the water injection device 50 to supply non-reactive high-pressure gas to the connection device 70.

More specifically, the double plugging device 20 includes an upper plug 11, a lower plug 13, a water outlet pipe 15, a first sensor 17A, a second sensor 17B, a third sensor 17C, and a pumping device 19 And the absolute water unit 21.

The upper plug 11 and the lower plug 13 are used to seal the test section 520, and the water outlet pipe 15 is connected to the connecting device 70 and has a plurality of holes 23. In particular, the upper plug 11 and the lower plug 13 are separate There is an opening for the water outlet hole pipe 15 to pass through, so the upper plug 11 and the lower plug 13 are sleeved and installed on the water outlet hole pipe 15. In addition, the water-proof unit 21 is arranged at the end of the water outlet hole pipe 15 to be closed, such as the lower end of the water outlet hole pipe 15 in the figure.

In addition, the first sensor 17A is arranged between the upper plug 11 and the lower plug 13, the second sensor 17B is arranged between the upper plug 11 and the connecting device 70, and the third sensor 17C is Set between the lower plug 13 and the water-proof unit 21. In particular, the first sensor 17A, the second sensor 17B, and the third sensor 17C are electrically connected to the integrated recording device 30 to measure individual water level or water pressure changes, and then generate and emit The first hydrological change signal, the second hydrological change signal, and the third hydrological change signal in the hydrological change signal are sent to the integrated recording device 30. Furthermore, the pumping device 19 is electrically connected to the integrated recording device 30 to receive control signals and operate.

Furthermore, the integrated recording device 30 includes an analog-to-digital converter 31, a computer device 33, a communication module 35, and a pressure warning unit 39. The analog-to-digital converter 31 is used to convert analog hydrological change signals and flow signals into digital forms The hydrological change signal and flow signal are then sent to the computer device 33 for recording, and the computer device 33 sends out control signals and test data based on the determination of the measurement mode.

In addition, the communication module 35 is electrically connected to the computer device 33 to receive the test data and further transmit it to the remote control platform 37, so that the decision-makers can grasp the layered water level or water pressure change data during the test in real time, and can communicate with the local The test personnel communicate, such as whether to change the test mode. The aforementioned remote control platform 37 can be a server, a notebook computer, a desktop computer, a smart phone, a tablet computer, or a smart TV.

The above-mentioned pressure warning unit 39 is electrically connected to the digital-to-analog converter 31 to receive the hydrological change signal and to generate a pressure warning signal based on it, which is then sent to the remote control platform 37 via the analog-to-digital converter 31 and a computer device. For subsequent processing.

Furthermore, the water injection device 50 includes a water storage device 51, a pipeline 53 and at least one flow meter 55, and the connection device 70 includes an injection pipe 71 and a connection head 73.

The injection pipe 71 is connected to the water outlet pipe 15 and the connector 73, and the connector 73 is further connected to the pipeline 53. In addition, the first sensor 17A, the second sensor 17B, the third sensor 17C and the pumping device 19 pass through The connector 73 is electrically connected to the integrated recording device 30, and the water storage device 51 is used to store water and includes a motor (not shown in the figure), and can be used for water replenishment according to the control signal from the integrated recording device 30. Furthermore, the pipeline 53 is connected to the water storage device 51 and the connection device 70, and at least one flow meter 55 is installed on the pipeline 53 to measure the water flow rate and send a flow rate signal to the integrated recording device 30.

In addition, the separate pressure control device 90 includes a pressure source 91, a pressure line 93, a first pressure control unit 95, and a second pressure control unit 97. The pressure source 91 stores non-reactive high-pressure gas, and the pressure line 93 is connected to the pressure source. 91 and the connector 73, and the first pressure control unit 95 and the second pressure control unit 97 have switch functions. They are arranged on the pressure pipeline 93 and are electrically connected to the integrated recording device 30. They can individually receive control signals to turn on high-pressure gas. Into the injection pipe 71 and the water outlet hole pipe 15 to supply high-pressure gas, or shut off the supply of high-pressure gas.

To be more careful, the first pressure control unit 95 is mainly responsible for controlling the pressure source 91 to deliver high-pressure gas, so as to pass through the pressure line 93, the connection head 73, the injection pipe 71, the upper plug 11, and then enter the water outlet pipe 15, and then Provide high-pressure gas to the drilling area 550, and the second pressure control unit 97 is responsible for controlling the pressure source 91 to deliver the high-pressure gas, and through the independent pressure pipeline 93 through the connector 73, the injection pipe 71, the upper plug 11, After the water outlet hole pipe 15 is directly injected into the lower plug 13.

In particular, the first sensor 17A, the second sensor 17B, and the third sensor 17C can detect pressure changes and respectively send out the first pressure change signal, the second pressure change signal and the third pressure change signal to the integrated record In the device 30, the integrated recording device 30 generates control signals to turn on or off the first pressure control unit 95 and the second pressure control unit 97 according to the first pressure change signal, the second pressure change signal, and the third pressure change signal.

Therefore, the separate plugging hydraulic test measurement system 1 of the present invention can separate the respective pressure delivery states of the upper plug 11 and the lower plug 13 from each other, and monitor the pressure state by integrating the recording device 30. When any one of the plug 11 and the lower plug 13 has a pressure abnormality, the computer device 33 can send a pressure warning signal, and send it to the remote control platform 37 through the communication module 35, and the decision-maker can direct the tester to The first pressure control unit 95 and the second pressure control unit 97 are manually adjusted on the surface. If necessary, the upper plug 11 and the lower plug 13 can be decompressed quickly, so that the entire system can be converted to a single-block blocking mode or even No blocking blocking mode.

When the integrated recording device 30 determines that the current measurement mode is the constant flow mode, it sends a control signal to the pumping device 19 for pumping, and the measurement is performed by the first sensor 17A, the second sensor 17B, and the third sensor 17C. Measure the change of water level, and send out hydrological change signals to the integrated recording equipment 30 individually.

When the measurement mode determined by the integrated recording device 30 is the constant water head mode, a control signal is sent to the water injection device 50 to inject water into the drilling area 550 of the test section 520, and then additional water pressure is applied, and the first sense The sensor 17A, the second sensor 17B, and the third sensor 17C measure changes in water pressure, and individually send hydrological change signals to the integrated recording device 30.

When the integrated recording device 30 determines that the measurement mode is the micro-water test mode, the first sensor 17A, the second sensor 17B, and the third sensor 17C record the amount of water level leakage, and individually send out hydrological change signals to Integrated recording equipment 30.

Furthermore, each flow meter 55 may have a different scale, so as to provide more accurate data according to the flow rate. In addition, the aforementioned measurement mode may further include a pressure pulse test mode.

Obviously, the characteristic of the separated plug hydraulic test measurement system of the first embodiment of the present invention is mainly that the separate pressure control equipment and pipeline configuration are specially designed for the downhole double plug hydraulic test, so that the test personnel can be on the surface Directly control the delivery state of the respective pressures of the upper and lower plugs, and adjust the intake state of any plug when the hole wall state or the well diameter changes greatly. There is no need to extract the equipment to the surface for replacement, and then further use three sets The sensor synchronously observes the water pressure changes before and after the change of the pressure state of the upper and lower plugs, so it can be equipped with water injection equipment for different modes of testing. Therefore, the present invention can effectively improve the test execution efficiency, obtain more field-scale hydrogeological parameters, and strengthen the hydrogeological survey results without affecting the labor cost of the hydraulic test.

With further reference to the second figure, the operation flow chart of the second embodiment of the present invention is the operation flow chart of the separate plug hydraulic test measurement method. As shown in the second figure, the separation plug hydraulic test measurement method of the second embodiment of the present invention includes steps S1, S10, S20, S30, S35, S40, S50, S55, S57, S60, S70, and S75. In order to achieve the estimation of the hydrogeological parameters of the rock formation in the drilling hole, and realize the separated plugging hydraulic test measurement.

First, the separation plug hydraulic test measurement method of the second embodiment of the present invention executes step S1 to start the entire operation, mainly preparing double plugging equipment, integrated recording equipment, water injection equipment, connection equipment, and separate pressure control equipment. Since the double plugging device, the integrated recording device, the water injection device, the connecting device and the separate pressure control device are the same as the above-mentioned first embodiment, the detailed technical content will not be repeated.

In step S10, the placement process is mainly to use drill rods to hoist the dual plugging equipment, integrated recording equipment, water injection equipment, connection equipment, and separate pressure control equipment to a specific test position to be tested, and at the same time according to the test to be tested The core record of the position is based on the preset plugging pressure warning value, and the plugging pressure warning value is used to confirm that the plugging and blocking test position is within the required safety pressure range. In particular, the double plugging device is installed in the test section of the rock plate in the test position to be tested. In addition, step S10 can also perform self-diagnosis at the same time to confirm whether the integrated recording device is operating normally.

Then go to step S20, turn on the first pressure control unit and the second pressure control unit of the separate pressure control device, generally on the ground, to release the high pressure gas from the pressure source to the upper and lower plugs of the double-plugging device For inflation, for example, the upper plug and the lower plug can be made of rubber to close the test section, and then start the water injection device to inject water, while additionally applying a fixed water pressure, and use the first sensor, the second sensor and the second sensor Three sensors record and measure changes in water pressure. When the upper and lower plugs are inflated for a period of time, the barrier can be completed, so that the fractures in the section can be temporarily separated from the upper and lower rock formations, and continue to pay attention to the first sensor, the second sensor and the third sensor. The water pressure record of the sensor changes.

Then execute step S30, turn on the pressure warning unit of the integrated recording device, and go to step S35 to observe whether the pressure record of the pressure warning unit is abnormal and return a pressure warning signal. If the pressure recording unit does not return a pressure warning signal, it indicates the status Normal, and go to step S40, and if the pressure recording unit returns a pressure warning signal, it means that the upper seal or the lower seal has a response of insufficient pressure or excessive pressure, which may be that the section rock is too broken, weak, and large. Mud inclusions or drastic changes in well diameter result in uneven expansion of the rubber membrane after inflation of the upper and lower plugs, and even incomplete barriers. At this time, step S50 is entered.

In step S40, the integrated recording equipment is used to obtain the hydrogeological parameters of the test section, where the hydrogeological parameters include the change of water level, the change of water volume, and the release amount of water level, and the change of water level corresponds to the constant flow mode, The change of the water volume corresponds to the constant water head mode, and the change of the water level release volume corresponds to the micro-water test mode, and then step S60 is entered to end the entire operation of the method of the present invention.

In step S50, it is determined whether the pressure warning signal shows that the pressure of the lower plug is abnormal. If the pressure warning signal shows that the pressure of the upper plug is abnormal, then step S55 is entered. If it is not that the pressure of the lower plug is abnormal, it is the upper plug. The pressure of the plug is abnormal, and the process proceeds to step S70.

In step S55, the lower plug is first manually decompressed, and the original double plug test mode can be immediately converted to the single plug test mode. At this time, there is no need to remove the double plug equipment, water injection equipment, and connection equipment from the surface. Reassemble and measure the hydrogeological parameters of the rock formation below the test section, and then proceed to step S57 to manually decompress the upper plug and observe the pressure accumulation record or the pressure dissipation record of the rock formation above the test section. According to this, a water permeability trend of the rock formation above the test section is estimated, and then step S60 is entered to end the entire operation.

In step S70, first manually decompress the upper plug, and then use the constant flow method or the micro-water test method to estimate the hydrogeological parameters of the rock formation above the test section, and then proceed to step S75 to manually decompress the lower plug. And observe the pressure accumulation record or pressure dissipation record of the rock formation below the test section to estimate the water permeability trend of the rock formation below the test section, and then proceed to step S60 to end the entire operation.

In addition, after completing steps S57 and S75, the segmented hydraulic parameters can also be estimated indirectly by means of progressive deduction on site. Therefore, the development of the plugging hydraulic test with the separated air intake system of the present invention can improve the on-site rock formation hydraulic characteristics survey technology, and can effectively improve the test execution efficiency and obtain more on-site scale hydraulic power without affecting the labor cost of the hydraulic test. Parameters, strengthen hydrogeological survey results.

The method of the present invention is particularly suitable for hydrogeological drilling investigations on landslides with drag and sliding potential, or muddy rock formations with poor consolidation and a high percentage of fine particles, etc. The execution sequence can be set from bottom to bottom. In addition to reducing the labor burden of the test personnel, the test is carried out section by section. It also reduces the chance of friction loss between the equipment and the hole wall during the lifting process.

To sum up, the feature of the present invention is to improve the air intake system of the plugging hydraulic equipment, breaking through the limitation of the conventional fixed double plugging hydraulic test and measuring device, and its operation is more flexible and flexible, plus a remote control interface , So that the communication between decision-makers and local test personnel is more smooth, and the reliability of test quality is strengthened.

The above descriptions are only used to explain the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Therefore, any modifications or changes related to the present invention made under the same spirit of the invention , Should still be included in the scope of the invention's intention to protect.

1: Double plug hydraulic test measurement system

10: Double sealing equipment

11: Upper closure

13: Lower plug

15: Outlet hole pipe

17A: The first sensor

17B: second sensor

17C: Third sensor

19: Pumping device

21: Waterproof device

23: Hole

30: Integrated recording equipment

31: Analog to Digital Converter

33: computer device

35: Communication module

37: Remote control platform

39: Pressure warning unit

50: water injection equipment

51: Water storage equipment

53: pipeline

55: Flowmeter

70: Connect the device

71: injection pipe

73: Connector

90: Separate pressure control equipment

91: Stressor

93: Pressure line

95: The first pressure control unit

97: The second pressure control unit

500: rock plate

520: Test section

550: Drilling area

S1: steps

S10, S20, S30, S35, S40, S50: steps

S55, S57, S60, S70, S75: steps

The first figure shows a schematic diagram of a hydraulic test and measurement system for separate plugging according to the first embodiment of the present invention. The second figure shows the operation flow chart of the hydraulic test measurement method of the separated plug according to the second embodiment of the present invention.

1: Double plug hydraulic test measurement system

10: Double sealing equipment

11: Upper closure

13: Lower plug

15: Outlet hole pipe

17A: The first sensor

17B: second sensor

17C: Third sensor

19: Pumping device

21: Waterproof device

23: Hole

30: Integrated recording equipment

31: Analog to Digital Converter

33: computer device

35: Communication module

37: Remote control platform

39: Pressure warning unit

50: water injection equipment

51: Water storage equipment

53: pipeline

55: Flowmeter

70: Connect the device

71: injection pipe

73: Connector

90: Separate pressure control equipment

91: Stressor

93: Pressure line

95: The first pressure control unit

97: The second pressure control unit

500: rock plate

520: Test section

550: Drilling area

Claims (9)

A separate plugging hydraulic test and measurement system is used to indirectly estimate a segmented hydraulic parameter by means of progressive deduction. It includes: a pair of plugging devices installed in a test section of a rock tray to issue A hydrological change signal; an integrated recording device, which is electrically connected to the double-blocking device, to receive the hydrological change signal, record the value in the hydrological change signal, determine a measurement mode, and record the flow rate change over time, According to the measurement mode, a control signal is issued, and a test data is generated and transmitted to a remote control platform. The test data includes the value in the hydrological change signal, the measurement mode, the flow rate and the time; a water injection The device is electrically connected to the integrated recording device to receive the control signal, and under the control of the integrated recording device, transmit an output water for replenishing water, and generate and transmit a flow rate corresponding to the output water Flow signal; a connection device, which is electrically connected to the double plugging device and the integrated recording device, and connected to the water injection device through a pipeline; and a separate pressure control device, which is electrically connected to the integrated recording device And the water injection device for supplying a non-reactive high-pressure gas to the connection device, wherein the double plugging device includes an upper plug, a lower plug, a water outlet pipe, a first sensor, and a second Two sensors, a third sensor, a pumping device, and a water-proof unit, the upper plug and the lower plug seal the test section, and the water outlet pipe is connected to the connecting device and has a plurality of holes , The upper plug and the lower plug each have an opening, the upper plug and the lower plug are sleeved through the opening and installed in the outlet pipe, and the water-proof unit is installed in the outlet pipe The lower end of the device is to close the lower end, the first sensor is arranged between the upper plug and the lower plug, and the second sensor is arranged between the upper plug and the connecting device , The third sensor is set on the lower plug and the absolute water sheet Between elements, the first sensor, the second sensor, and the third sensor are electrically connected to the integrated recording device, and measure individual water level or water pressure changes to generate and emit A first hydrological change signal, a second hydrological change signal, and a third hydrological change signal of the hydrological change signal are transmitted to the integrated recording equipment, the pumping device is electrically connected to the integrated recording equipment to receive the control signal, the The integrated recording equipment includes an analog-to-digital converter, a computer device, a communication module, and a pressure warning unit. The analog-to-digital converter is used to convert the analog hydrological change signal and the flow signal into a digital hydrological change The signal and the flow signal are sent to the computer device for recording, and the control signal and the test data are sent out according to the judgment to enter the measurement mode. The communication module is electrically connected to the computer device to receive the test The data is further transmitted to a remote control platform, and the pressure warning unit is electrically connected to the ratio-to-digital converter to receive the hydrological change signal and generate a pressure warning signal accordingly, and then pass the analog-digital converter and the The computer device is transmitted to the remote control platform, the connection device includes an injection pipe and a connector, the water injection device includes a water storage device, a pipeline, and at least one flow meter, and the injection pipe connects the water outlet pipe and the connection Head, and the connector is connected to the pipeline, the first sensor, the second sensor, the third sensor, and the pumping device are electrically connected to the integrated recording device through the connector, the The water storage device is used to store water, and includes a motor, and performs water replenishment according to the control signal. The pipeline is connected to the water storage device and the connecting device, and the at least one flow meter is installed on the pipeline for Measure the water flow, and send the flow signal to the integrated recording device. The separate pressure control device includes a pressure source, a pressure pipeline, a first pressure control unit, and a second pressure control unit. The pressure source is stored The high-pressure gas, the pressure pipeline is connected to the pressure source and the connector, the first pressure control unit and the second pressure control unit have switch functions, are arranged on the pressure pipeline, and are electrically connected to the integrated recording device, Used to individually receive the control signal to open the high-pressure gas flowing into the injection pipe and the water outlet pipe, or close the high-pressure gas, the first sensor, the second sensor, and the third sensor detect When the pressure changes, a first pressure change signal, a second pressure change signal, and a third pressure change signal are sent to The integrated recording device generates the control signal to individually turn on or turn off the first pressure control unit and the second pressure change signal according to the first pressure change signal, the second pressure change signal, and the third pressure change signal Pressure control unit. According to the separated plug hydraulic test measurement system described in item 1 of the scope of patent application, the measurement mode is a certain flow mode, a certain water head mode or a micro water test mode. According to the separated plug hydraulic test and measurement system described in item 2 of the scope of patent application, when the measurement mode is a constant flow mode, the control signal is sent to the pumping device to pump water, and the first sensor , The second sensor and the third sensor measure the change of water level, and individually send out the hydrological change signal to the integrated recording device, when the measurement mode determined by the integrated recording device is the constant head mode The control signal is sent to the water injection device to inject water into the drilling area of the test section and apply a water pressure, and the first sensor, the second sensor, and the third sensor Measure the change of water pressure, and individually send out the hydrological change signal to the integrated recording device. When the integrated recording device determines that the measurement mode is the water test mode, the first sensor and the second sensor And the third sensor records a water level drop and sends out the hydrological change signal to the integrated recording device individually. According to the separated plug hydraulic test and measurement system described in the first item of the patent application, the flowmeter has different scales to provide more accurate data according to the flow rate. According to the separated plug hydraulic test measurement system described in item 2 of the scope of patent application, the measurement mode further includes a pressure pulse test mode. A separate plugging hydraulic test measurement method, including: a step S1, start, prepare a double plugging device, an integrated recording device, a water injection device, a connecting device and a separate pressure control device, the double plugging device The equipment is used to send out a hydrological change signal, The integrated recording device is electrically connected to the dual-plugging device to receive the hydrological change signal, record the value in the hydrological change signal, determine a measurement mode, record the change in flow rate over time, and send out according to the measurement mode A control signal, which generates and transmits a test data to a remote control platform, the test data includes the value in the hydrological change signal, the measurement mode, the flow rate and the time, and the water injection equipment is electrically connected to the integrated record Device for receiving the control signal, transmitting an output water for replenishment under the control of the integrated recording device, and generating and transmitting a flow signal corresponding to a flow of the output water, the separate pressure control device Electrically connected to the integrated recording device and the water injection device to supply a non-reactive high-pressure gas to the connection device. The double-plugging device includes an upper plug, a lower plug, a water outlet pipe, and a first The sensor, a second sensor, a third sensor, a pumping device and a water-proof unit, the water outlet pipe is connected to the connecting device and has a plurality of holes, the upper plug and the lower plug Each has an opening, the upper plug and the lower plug are sleeved through the opening and installed on the outlet hole pipe, and the water-proof unit is arranged at the lower end of the outlet hole pipe to close the lower end, The first sensor is arranged between the upper plug and the lower plug, the second sensor is arranged between the upper plug and the connecting device, and the third sensor is arranged between Between the lower plug and the water-proof unit, the first sensor, the second sensor, and the third sensor are electrically connected to the integrated recording device, and measure individual water level or water pressure A first hydrological change signal, a second hydrological change signal, and a third hydrological change signal included in the hydrological change signal are generated and sent to the integrated recording device, and the pumping device is electrically connected to the integrated record Equipment to receive the control signal. The integrated recording equipment includes an analog-to-digital converter, a computer device, a communication module, and a pressure warning unit. The analog-to-digital converter is used to convert the analog hydrological change signal and the flow rate The signal is converted into the digital hydrological change signal and the flow signal and sent to the computer device for recording, and the control signal and the test data are sent out according to the judgment to enter the measurement mode. The communication module is electrically connected to the A computer device for receiving the test data and further transmitting it to a remote control platform. The pressure warning unit is electrically connected to the ratio-to-digital converter for receiving the hydrological change signal According to the signal, a pressure warning signal is generated, and then transmitted to the remote control platform through the analog-to-digital converter and the computer device. The connection device includes an injection pipe and a connector. The water injection device includes a water storage device , A pipeline and at least one flowmeter, the injection pipe is connected to the outlet pipe and the connector, and the connector is connected to the pipeline, the first sensor, the second sensor, and the third sensor The device and the water pumping device are electrically connected to the integrated recording device through the connector. The water storage device is used to store water, includes a motor, and replenishes water according to the control signal. The pipeline is connected to the water storage device. Equipment and the connecting equipment, the at least one flow meter is set on the pipeline to measure the flow of water and send the flow signal to the integrated recording equipment, the separate pressure control equipment includes a pressure source and a pressure pipeline , A first pressure control unit and a second pressure control unit, the pressure source stores the high-pressure gas, the pressure pipeline is connected to the pressure source and the connector, the first pressure control unit and the second pressure control unit have The switch function is set on the pressure pipeline and electrically connected to the integrated recording device to individually receive the control signal to turn on or off the high-pressure gas, the first sensor, the second sensor, and the The third sensor detects the pressure change and separately sends a first pressure change signal, a second pressure change signal, and a third pressure change signal to the integrated recording device, which is based on the first pressure change signal, The second pressure change signal and the third pressure change signal generate the control signal to individually turn on or off the first pressure control unit and the second pressure control unit; in step S10, a placement process is performed, mainly using a drill The rod hoists the double plugging equipment, the integrated recording equipment, the water injection equipment, the connecting equipment and the separate pressure control equipment to a test position to be tested, and presets according to a core record of the test position to be tested A plug pressure warning value, and the plug pressure warning value is used to confirm that the test position of the plug blocking is within the required safety pressure range, and the plugging equipment is installed in the test position to be tested In a test section of the rock disk; a step S20, the first pressure control unit and the second pressure control unit are turned on to release the high pressure gas in the pressure source to the upper plug and the lower plug. Inflated, and then the upper seal and the lower seal The plug seals the test section, and then starts the water injection device to inject water, while additionally applying a fixed water pressure, and the first sensor, the second sensor and the third sensor record the water measurement Change of pressure; Step S30, turn on the pressure warning unit; Step S35, observe whether the pressure warning unit returns a pressure warning signal, if the pressure warning unit does not return the pressure warning signal, go to a step S40, And if the pressure warning unit returns the pressure warning signal, step S50 is entered; in step S40, the integrated recording device is used to obtain a hydrogeological parameter of the test section, and the hydrogeological parameter includes a water level Change, a change in water volume, and a change in water level discharge, and the change in water level corresponds to a certain flow pattern, the change in water volume corresponds to a certain head mode, and the change in water level discharge corresponds to a change Slight water test mode, then enter a step S60 to end the operation; in this step S50, it is determined whether the pressure warning signal indicates that the pressure of the lower plug is abnormal, and if the pressure of the lower plug is abnormal, then enter a step S55 , And if the pressure is not abnormal in the lower plug, proceed to step S70; in step S55, first manually decompress the lower plug, and measure the hydrogeological parameters of the rock below the test section, and then enter In a step S57, the upper plug is manually decompressed, so as to observe the pressure accumulation record or the pressure dissipation record of the rock formation above the test section, and then estimate a water permeability trend of the rock formation above the test section. Enter the step S60 to end the operation; and in the step S70, first perform a manual decompression of the upper plug, and then use the constant flow method or the micro-water test method to estimate the hydrogeological parameters of the rock formation above the test section , Then proceed to a step S75 to manually decompress the lower plug to observe a pressure accumulation record or a pressure dissipation record of the rock formation below the test section, so as to estimate a water permeability trend of the rock formation below the test section. Then enter this step S60 to end the operation, Among them, after the step S57 is completed, a field person indirectly estimates a segmented hydraulic parameter in a progressive deduction manner. According to the separation type plug hydraulic test measurement method described in item 6 of the scope of patent application, when the measurement mode is a constant flow mode, the control signal is transmitted to the pumping device for pumping, and the first sensing The sensor, the second sensor and the third sensor measure the change of water pressure, and respectively send the text change signal to the integrated recording device. According to the separation type plug hydraulic test measurement method described in item 6 of the scope of patent application, when the measurement mode is the constant head mode, the control signal is transmitted to the water injection equipment, and water is injected into the drill in the test section. In the hole area, a water pressure is applied, and the first sensor, the second sensor, and the third sensor measure the changes in the water pressure, and individually send out the hydrological change signal to the integrated record equipment. According to the separation type plug hydraulic test measurement method described in item 6 of the scope of patent application, when the measurement mode is the water test mode, the first sensor, the second sensor and the third sensor The detector records the amount of water level release and individually sends out the hydrological change signal to the integrated recording device.

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