CN210370613U - High-temperature geothermal well water testing well killing system - Google Patents
High-temperature geothermal well water testing well killing system Download PDFInfo
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- CN210370613U CN210370613U CN201921300144.3U CN201921300144U CN210370613U CN 210370613 U CN210370613 U CN 210370613U CN 201921300144 U CN201921300144 U CN 201921300144U CN 210370613 U CN210370613 U CN 210370613U
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Abstract
The utility model discloses a high temperature geothermal well water test kill system, this system includes: the system comprises a four-way joint, a high-temperature deep well pump, an industrial personal computer and valves respectively positioned on four pipelines of the four-way joint; wherein: the industrial personal computer is respectively connected with the valve and the high-temperature deep-well pump in a control way; the first pipeline of the four-way joint is vertically communicated with the second pipeline, and the third pipeline is transversely communicated with the fourth pipeline; a valve on a first pipeline of the four-way valve is a hydraulic wellhead valve, and the hydraulic wellhead valve is connected with a wellhead of a high-temperature geothermal well through a flange or a thread; a valve on a second pipeline of the four-way valve is a hydraulic well closing valve; the third pipeline of the four-way joint is a measurement data pipeline; and the fourth pipeline of the four-way joint is a kill line. The system can realize remote control of the water testing and well killing processes, can automatically measure and store relevant data in the water testing process and the well killing process, does not need manual measurement, and reduces the labor intensity; the accuracy of the measured data is improved, the safety factor is higher, and safety accidents can be prevented.
Description
Technical Field
The utility model relates to a high temperature geothermal well exploration field, in particular to high temperature geothermal well water test kill system.
Background
The water testing is one of the important works of the high-temperature geothermal well reserve calculation and the capacity evaluation. In the process of testing water in a high-temperature geothermal well, high-temperature hot water in the well rapidly gushes out due to the reduction of the pressure of a liquid column in the well, and gushing and vaporization are easy to occur. At present, no special equipment for testing water of a high-temperature geothermal well exists, all parameters in the water testing process need manual measurement, and the problems of large data error, high risk of high-temperature scald and the like exist.
In addition, once gushing or vaporization occurs in the water testing process, the amount and pressure value of hot water discharged from the high-temperature geothermal well cannot be measured, so that the storage capacity and the capacity of the geothermal well cannot be accurately calculated, and meanwhile, serious safety accidents can be caused.
How to solve the technical problems is a problem to be solved urgently by practitioners of the same industry at present.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide a high temperature geothermal well testing water kill system that overcomes or at least partially solves the above problems.
The embodiment of the utility model provides a high temperature geothermal well water test kill system, include: the system comprises a four-way joint, a high-temperature deep well pump, an industrial personal computer and valves respectively positioned on four pipelines of the four-way joint;
wherein: the industrial personal computer is respectively in control connection with the valve and the high-temperature deep-well pump;
the high-temperature deep well pump is positioned in the wellhead of the high-temperature geothermal well and is used for pumping hot water in the well;
the first pipeline of the four-way joint is vertically communicated with the second pipeline, and the third pipeline is transversely communicated with the fourth pipeline;
a valve on a first pipeline of the four-way valve is a hydraulic wellhead valve, and the hydraulic wellhead valve is connected with a wellhead of a high-temperature geothermal well through a flange or a thread;
a valve on a second pipeline of the four-way valve is a hydraulic well closing valve;
the third pipeline of the four-way joint is a measurement data pipeline; and the fourth pipeline of the four-way joint is a kill line.
In one embodiment, the measurement data pipeline is sequentially provided with a pressure gauge, a hydraulic blowout valve, a first flowmeter and a thermometer according to the water flow direction;
the pressure gauge, the hydraulic open-flow valve, the first flowmeter and the thermometer are all connected with the industrial personal computer.
In one embodiment, the pressure gauge is a high temperature resistant pressure gauge.
In one embodiment, the first flow meter is a high temperature flow meter.
In one embodiment, the thermometer is a high temperature metal thermometer.
In one embodiment, the kill line is sequentially provided with a mud pump, a second flowmeter and a hydraulic kill valve according to the flow direction of fluid in the pipe;
and the mud pump, the second flowmeter and the hydraulic well killing valve are all connected with the industrial personal computer.
The embodiment of the utility model provides a pair of high temperature geothermal well test water killing system, include: the system comprises a four-way joint, a high-temperature deep well pump, an industrial personal computer and valves respectively positioned on four pipelines of the four-way joint; the whole set of system can realize remote control of the water testing and well killing processes, can automatically measure and store relevant data in the water testing process and the well killing process, does not need manual measurement, and reduces labor intensity; the accuracy of the measured data is also improved, potential safety hazards of personnel do not exist, the safety factor is higher, and safety accidents can be prevented.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic structural diagram of a high-temperature geothermal well water-testing pressure well system provided by the embodiment of the utility model.
Fig. 2 is a flow chart of water testing steps of the high-temperature geothermal well water testing and killing system provided by the embodiment of the utility model.
Fig. 3 is a flow chart illustrating the well killing steps of the high-temperature geothermal well water testing and well killing system provided by the embodiment of the present invention.
In the drawings: 1. a slurry pump; 2. a second flow meter; 3. a hydraulic kill valve; 4. four-way connection; 5. a hydraulic shut-in valve; 6. a pressure gauge; 7. a hydraulic blowout valve; 8. a first flow meter; 9. a thermometer; 10. a geothermal well head; 11. a high temperature deep well pump; 12. an industrial personal computer; 13 hydraulic wellhead valve.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides a high temperature geothermal well water pressure well testing system, including: the four-way valve comprises a four-way valve 4, a high-temperature deep-well pump 11, an industrial personal computer 12 and valves which are respectively positioned on four pipelines of the four-way valve 4.
The industrial personal computer 12 is respectively connected with the valves and the high-temperature deep-well pump 11 in a control mode and used for controlling the opening and closing of the valves and controlling the opening and stopping of the high-temperature deep-well pump 11. The industrial personal computer mainly comprises the following categories: IPC (PC bus industrial computer), PLC (programmable control system), DCS (decentralized control system), FCS (field bus system) and CNC (numerical control system) five, the embodiment of the utility model provides a do not limit to this.
The cross joint 4 is cross-shaped, and the upper pipeline and the lower pipeline are respectively a first pipeline and a second pipeline which are communicated in the vertical direction; the two pipelines in the horizontal direction are respectively a third pipeline and a fourth pipeline.
When in application, the valve on the first pipeline is called as a hydraulic wellhead valve 13 and is connected with a wellhead 10 of the high-temperature geothermal well through a flange or a thread; the high-temperature deep well pump 11 is arranged in the wellhead 10 of the high-temperature geothermal well and is used for extracting hot water under the control of the industrial personal computer 12.
The valve on the second pipeline is called a hydraulic well shut-in valve 5, and is in a closed state for full consideration under the conditions of non-water testing and well killing.
The third pipeline is used for measuring data, such as well head pressure, flow, temperature and the like in the water testing process, monitoring the change of the data in real time, and taking corresponding measures to prevent the occurrence of a gushing accident. For example, when a water burst accident occurs, the well killing treatment can be realized through the fourth pipeline.
The embodiment of the utility model provides a high temperature geothermal well water test kill-job system can realize water test and kill-job process remote control, can automatic measurement and save the relevant data in water test process and the kill-job process, need not artifical the measurement, has reduced intensity of labour; the accuracy of the measured data is also improved, potential safety hazards of personnel do not exist, the safety factor is higher, and safety accidents can be prevented.
In one embodiment, the measurement data pipeline is sequentially provided with a pressure gauge 6, a hydraulic blowout valve 7, a first flowmeter 8 and a thermometer 9 according to the water flow direction; and the above components are all connected with the industrial personal computer 12; the industrial personal computer can acquire the pressure value, the flow data and the temperature data in real time and sequentially control the opening and closing of other valves.
Wherein, manometer 6 can select for use high temperature resistant manometer, and all spare parts of high temperature resistant manometer are made by stainless steel material, have good corrosion-resistant function, and applicable in the medium stronger to the corrosivity.
The first flow meter 8 can be selected as a high-temperature flow meter, and a suitable type of high-temperature flow meter can be selected according to the estimated temperature of the hot well. For example: the thermometer measurement categories include: 1500-2000 ℃, 500-1000 ℃, 400-500 ℃ and the like.
The flow meter also defines different high temperature ranges depending on the principle of construction. For example, the differential pressure flow meter of the throttle mechanism is about 540 ℃, the positive displacement flow meter is about 200 ℃, and the area flow meter is about 400 ℃. The flowmeter sensor is not contacted with the measured medium, no part abrasion exists, and the use is safe and reliable.
The thermometer can be a high-temperature metal thermometer, such as a WSSXN series shockproof electric contact bimetallic thermometer, can directly measure liquid and steam within the range of minus 80 ℃ to plus 500 ℃, and can meet the temperature measurement requirement of a geothermal well.
Taking the water testing process of the high-temperature geothermal well as an example:
firstly, the hydraulic wellhead valve 13 is connected with the wellhead 10 of the high-temperature geothermal well through a flange or a thread.
And the data acquisition control system of the industrial personal computer 12 controls the closing of the hydraulic well killing valve 3, the opening of the hydraulic well closing valve 5, the opening of the hydraulic blowout valve 7 and the opening of the hydraulic wellhead valve 13.
And (3) putting the high-temperature deep well pump 11 into the high-temperature geothermal well mouth 10, and starting the high-temperature deep well pump 11 to pump water through a data acquisition control system of an industrial personal computer 12. In the process of pumping water, hot water in the high-temperature geothermal well can automatically gush out along with the temperature rise and the pressure reduction in the well.
When the hot water in the high-temperature geothermal well is automatically gushed out, a high-temperature deep well pump 11 is lifted out of the wellhead 10 of the high-temperature geothermal well.
The hydraulic well closing valve 5 is controlled to be closed through a data acquisition control system of the industrial personal computer 12, and at the moment, hot water in the high-temperature geothermal well is discharged through the hydraulic blowout valve 7. The opening degree of the hydraulic blowout valve 7 can be controlled through a data acquisition control system of the industrial personal computer 12, so that the hot water discharge flow in the high-temperature geothermal well is controlled; the pressure of the wellhead can be measured by a high-temperature-resistant pressure gauge 6; the flow of hot water discharged from the high-temperature geothermal well can be measured through a flowmeter 8; the temperature of hot water discharged from a high-temperature geothermal well can be measured by a thermometer 9; the data acquisition control system of the industrial personal computer 12 can acquire and store wellhead pressure, flow and temperature data measured by the high-temperature-resistant pressure gauge 6, the high-temperature-resistant flowmeter 8 and the high-temperature metal thermometer 9.
And after pressure, flow and temperature data of a hot water well head discharged by the high-temperature geothermal well are obtained, the hydraulic wellhead valve 13 and the hydraulic blowout valve 7 are controlled to be closed through a data acquisition control system of the industrial personal computer 12, and the water testing process is finished.
Through the data acquisition control system of the industrial personal computer 12, the wellhead pressure, flow, temperature numerical values and curves of hot water discharged from the high-temperature geothermal well can be output, and the storage capacity and the productivity of the high-temperature geothermal well can be obtained through calculation.
In one embodiment, referring to FIG. 1, in the fourth line of the cross-section: the well killing pipeline is sequentially provided with a slurry pump 1, a second flow meter 2 and a hydraulic well killing valve 3 according to the flow direction of fluid in the pipeline;
the mud pump 1, the second flowmeter 2 and the hydraulic well killing valve 3 are all connected with the industrial personal computer 12. In the well killing process, the industrial personal computer 12 can control the mud pump 1 to carry out well killing operation and can obtain flow data of well killing injection fluid.
In this embodiment, after a kick overflow occurs, a drilling fluid column pressure needs to be reestablished in the well to balance the formation pressure, and a common kill method used to prevent a kick is to pump in cold water or a high density flush, such as a higher density mud.
The second flow meter 2 measures cold water or a high-density rinse liquid, and therefore the range of types selectable in comparison with the first flow meter is relatively large.
Wherein, the water testing step, specifically, as shown in fig. 2, includes:
s21, the industrial personal computer sends a first control signal to control a valve on the kill-job pipeline to be closed;
s22, the industrial personal computer sends a second control signal to control the opening of a valve, a hydraulic well closing valve and a hydraulic well mouth valve on the measurement data pipeline;
s23, the industrial personal computer sends a third control signal to control the high-temperature deep well pump to be started to pump hot water in the well;
s24, when hot water in the high-temperature geothermal well automatically gushes out in the water pumping process, the high-temperature deep well pump is lifted out from the wellhead of the high-temperature geothermal well;
s25, the industrial personal computer sends a fourth control signal to control the hydraulic well closing valve to be closed, and hot water flows out of the measurement data pipeline;
and S26, the industrial personal computer acquires corresponding measurement data from the measurement data pipeline to finish water testing.
Step S26 specifically includes: the industrial personal computer controls the opening of the hydraulic blowout valve, acquires a wellhead pressure value from a pressure gauge on a measurement data pipeline, acquires flow data from the first flowmeter and acquires temperature data from the thermometer; and generating a fitting curve according to the pressure value, the flow data and the temperature data to finish water testing.
Taking the well killing process of the high-temperature geothermal well as an example:
in the process of testing water in a high-temperature geothermal well, the phenomena of out-of-control water burst and vaporization of high-temperature hot water are likely to occur, and if the phenomena are not controlled, serious safety accidents can be caused. Timely well killing is needed to avoid accidents.
In the process of testing water of the high-temperature geothermal well, the hydraulic well killing valve 3 is in a closed state, the hydraulic well closing valve 5 is in a closed state, the hydraulic blowout valve 7 is in an open state, and high-temperature hot water in the high-temperature geothermal well is discharged from the hydraulic blowout valve 7.
When the phenomena of out-of-control water burst and high-temperature hot water vaporization occur, the hydraulic blowout valve 7 is closed through the data acquisition control system of the industrial personal computer 12, and the hydraulic well control valve 3 is opened.
The mud pump 1 is started through a data acquisition control system of the industrial personal computer 12, and cold water or high-density flushing fluid can be pumped into a wellhead 10 of the high-temperature geothermal well through the hydraulic killing valve 3 after the mud pump 1 is started, so that cooling and killing are realized.
The opening degree of the hydraulic control well valve 3 can be controlled through a data acquisition control system of the industrial personal computer 12, so that the flow of cold water or high-density flushing fluid is controlled; the pressure of the wellhead can be measured through a pressure gauge 6; the flow rate of cold water or high-density flushing liquid pumped into the wellhead 10 of the high-temperature geothermal well can be measured through the second flow meter 2; the data acquisition control system of the industrial personal computer 12 can acquire and store wellhead pressure and flow data measured by the pressure gauge 6 and the second flow meter 2.
The wellhead pressure is read through a data acquisition control system of the industrial personal computer 12, and when the wellhead pressure is recovered to zero, the well killing success is indicated. And (3) shutting down the mud pump 1, shutting down the hydraulic well killing valve 3, shutting down the hydraulic wellhead valve 13 and ending the well killing process through a data acquisition control system of the industrial personal computer 12.
The killing step, specifically, as shown in fig. 3, includes:
s31, in the water testing process, when the water burst is out of control and high-temperature hot water is vaporized, the industrial personal computer sends a fifth control signal to control the hydraulic blowout valve to be closed and control the hydraulic kill valve on the kill pipeline to be opened;
s32, the industrial personal computer sends a sixth control signal to control the slurry pump to be started, and cold water or flushing fluid is pumped into the wellhead of the high-temperature geothermal well through the hydraulic well killing valve;
s33, sending a seventh control signal by the industrial personal computer according to the acquired wellhead pressure of the pressure gauge on the measured data pipeline, and controlling the opening degree of the hydraulic well killing valve;
s34, acquiring wellhead pressure data of the pressure gauge and flow data of the second flow meter in real time by the industrial personal computer;
s35, when the pressure data is restored to zero, indicating that the well killing is successful;
and S36, controlling the mud pump, the hydraulic well killing valve and the hydraulic well mouth valve to close, and ending well killing.
The embodiment of the utility model provides a high temperature geothermal well water test kill system:
1. the remote control of the water testing and well killing processes can be realized, the operation is simple, the labor intensity is low, and the safety factor is high.
2. The system can automatically measure and store wellhead pressure, flow and temperature data in the water testing process, manual measurement is not needed, labor intensity is reduced, data accuracy is improved, and potential safety hazards of personnel do not exist.
3. When a gushing accident occurs, manual remote rapid well shut-in and killing can be realized, and safety accidents are prevented.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A high temperature geothermal well water test kill system, comprising: the system comprises a four-way joint (4), a high-temperature deep well pump (11), an industrial personal computer (12) and valves which are respectively positioned on four pipelines of the four-way joint;
wherein: the industrial personal computer (12) is respectively in control connection with the valve and the high-temperature deep-well pump (11);
the high-temperature deep well pump (11) is positioned in a wellhead (10) of the high-temperature geothermal well and is used for pumping hot water in the well;
the first pipeline of the four-way joint is vertically communicated with the second pipeline, and the third pipeline is transversely communicated with the fourth pipeline;
a valve on a first pipeline of the four-way valve is a hydraulic wellhead valve (13), and the hydraulic wellhead valve (13) is connected with a wellhead (10) of the high-temperature geothermal well through a flange or a thread;
a valve on a second pipeline of the four-way valve is a hydraulic well closing valve (5);
the third pipeline of the four-way joint is a measurement data pipeline; and the fourth pipeline of the four-way joint is a kill line.
2. The water pressure well testing system of the high-temperature geothermal well is characterized in that the measurement data pipeline is sequentially provided with a pressure gauge (6), a hydraulic blowout valve (7), a first flowmeter (8) and a thermometer (9) according to the water flow direction;
the pressure gauge (6), the hydraulic blowout valve (7), the first flowmeter (8) and the thermometer (9) are all connected with the industrial personal computer (12).
3. The system for testing the water pressure well of the high-temperature geothermal well is characterized in that the pressure gauge (6) is a high-temperature-resistant pressure gauge.
4. A high temperature geothermal well testing water kill system as defined in claim 2, in which the first flow meter (8) is a high temperature flow meter.
5. A high temperature geothermal well-testing water-kill system as defined in claim 2, in which the thermometer (9) is a high temperature metal thermometer.
6. The system for testing and killing the water in the high-temperature geothermal well according to the claim 1, characterized in that the kill line is provided with a mud pump (1), a second flow meter (2) and a hydraulic kill valve (3) in sequence according to the flow direction of fluid in the pipe;
the mud pump (1), the second flowmeter (2) and the hydraulic well killing valve (3) are all connected with the industrial personal computer (12).
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| CN201921300144.3U CN210370613U (en) | 2019-08-12 | 2019-08-12 | High-temperature geothermal well water testing well killing system |
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| CN201921300144.3U CN210370613U (en) | 2019-08-12 | 2019-08-12 | High-temperature geothermal well water testing well killing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388203A (en) * | 2019-08-12 | 2019-10-29 | 北京探矿工程研究所 | High-temperature geothermal well water testing and well killing system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388203A (en) * | 2019-08-12 | 2019-10-29 | 北京探矿工程研究所 | High-temperature geothermal well water testing and well killing system and method |
| CN110388203B (en) * | 2019-08-12 | 2024-02-13 | 北京探矿工程研究所 | High-temperature geothermal well water pressure testing well system and method |
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