CN110617056A - Triggering method and device for liquid level test of high-pressure oil-gas well - Google Patents
Triggering method and device for liquid level test of high-pressure oil-gas well Download PDFInfo
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- CN110617056A CN110617056A CN201911082559.2A CN201911082559A CN110617056A CN 110617056 A CN110617056 A CN 110617056A CN 201911082559 A CN201911082559 A CN 201911082559A CN 110617056 A CN110617056 A CN 110617056A
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- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 238000009527 percussion Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000010304 firing Methods 0.000 claims abstract description 8
- 230000005236 sound signal Effects 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 abstract description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Classifications
-
- 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
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a percussion method and a percussion device for liquid level testing of a high-pressure oil-gas well, wherein a shell is divided into an upper cavity and a lower cavity by a spacer block, and the upper cavity is communicated with a well head sleeve; high-pressure gas is filled into the upper cavity through the wellhead casing, and the high-pressure gas enters the lower cavity through the one-way valve channel; when the pressure of the lower cavity and the upper cavity is balanced, the inflation is stopped; starting the piston driving device to drive the piston to move towards the lower cavity along the piston channel, so that the pressure of the lower cavity is increased, and a pressure difference is formed between the upper cavity and the lower cavity; at the moment, the electromagnetic valve is started, so that high-pressure gas in the lower cavity is instantly released through the electromagnetic valve channel to generate a sound signal, and the aim of percussion is fulfilled. The invention can carry out the test by adopting the sleeve gas without providing air or compressed nitrogen outside, and can adopt a full-sealed structural design to ensure the sealing property of the device. Even if the firing device breaks down, the good sealing performance can prevent the leakage accident of the oil and gas well.
Description
Technical Field
The invention relates to a triggering method and a triggering device for liquid level testing of a high-pressure oil-gas well, and belongs to the technical field of high-pressure oil-gas well testing.
Background
Level depth testing of oil and gas wells is an important task for oil and gas field monitoring. The working condition of the oil well or the gas well can be judged through the liquid level test data so as to adjust production measures in time and achieve the aims of improving efficiency, saving energy and reducing consumption. The depth from the wellhead to the liquid level in the well reflects the flowing pressure in the well and is generally tested by an echo method.
The sound source in the existing liquid level test mainly comprises three types of sound and elastic explosion, compressed nitrogen release and compressed air release. The existing testing method has the technical problems of high testing cost, inconvenient operation, potential safety hazard, easy explosion, serious accidents, high-pressure oil and gas well leakage, environmental pollution and the like. Therefore, the prior art still has shortcomings and needs to be improved.
Disclosure of Invention
The invention aims to provide a triggering method and a triggering device for liquid level testing of a high-pressure oil-gas well, so as to eliminate potential safety hazards of the liquid level testing of the high-pressure oil-gas well and reduce testing cost, thereby overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a triggering method for liquid level testing of a high-pressure oil-gas well, which is characterized in that a shell is divided into an upper cavity and a lower cavity by a spacer block, wherein the upper cavity is communicated with a well head sleeve; high-pressure gas is filled into the upper cavity through the wellhead casing, and the high-pressure gas enters the lower cavity through the one-way valve channel; when the pressure of the lower cavity and the upper cavity is balanced, the inflation is stopped; starting the piston driving device to drive the piston to move towards the lower cavity along the piston channel, so that the pressure of the lower cavity is increased, and a pressure difference is formed between the upper cavity and the lower cavity; at the moment, the electromagnetic valve is started, so that high-pressure gas in the lower cavity is instantly released through the electromagnetic valve channel to generate a sound signal, and the aim of percussion is fulfilled.
In the triggering method, the filter is respectively arranged at the passage ports of the one-way valve passage, the piston passage and the electromagnetic valve passage close to one side of the upper cavity so as to prevent impurities in the well head sleeve from entering the lower cavity and influencing the triggering effect; impurities in the well head sleeve are prevented from entering the piston channel, and the movement and sealing effect of the piston are influenced.
In the triggering method, a one-way valve is arranged at one side of the one-way valve channel close to the lower cavity; and the gas in the upper cavity is allowed to enter the lower cavity through the one-way valve, and the gas in the lower cavity is prevented from flowing back to the upper cavity.
In the triggering method, a microphone is arranged on the shell of the upper cavity and is communicated with the upper cavity; the received sound signal is converted into a current signal by a microphone.
In the triggering method, the shell of the lower cavity is provided with the pressure relief valve; when the instrument is disassembled, the pressure release valve is opened, so that the interior of the lower cavity is communicated with the external environment, and safety accidents are prevented.
The percussion device for testing the liquid level of the high-pressure oil-gas well, which is formed according to the method, comprises a shell; the shell is internally provided with a partition block and is divided into an upper cavity and a lower cavity through the partition block; the partition block is provided with an electromagnetic valve channel, a one-way valve channel and a piston channel; one side of the electromagnetic valve channel close to the lower cavity is provided with an electromagnetic valve; one side of the one-way valve channel close to the lower cavity is provided with a one-way valve; a piston is arranged in the piston channel.
In the above trigger device, the electromagnetic valve channel, the one-way valve channel and the piston channel are respectively provided with a filter at the channel port close to the upper cavity side.
In the above-mentioned trigger device, a microphone is disposed on the upper cavity of the housing.
In the above-mentioned trigger device, the casing is located cavity of resorption department and is equipped with the relief valve.
In the firing device, the piston is connected with the inner wall of the piston channel in a sliding manner; the piston is provided with a sealing ring.
Due to the adoption of the technical scheme, compared with the prior art, the device can be tested by adopting sleeve gas, air or compressed nitrogen does not need to be supplied from the outside, and a full-sealed structural design can be adopted, so that the sealing property of the device is ensured. Even if the firing device breaks down, the good sealing performance can prevent the leakage accident of the oil and gas well. The invention has simple operation, does not use compressed air or compressed nitrogen, and can carry out the test by sending out a test command after the instrument is connected. The safety of the test process is high, and explosion and serious accidents cannot be caused. The invention can solve a series of problems of liquid level test of high-pressure oil-gas wells.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The labels in the figures are: 1-shell, 2-spacer block, 3-upper chamber, 4-lower chamber, 5-electromagnetic valve channel, 6-one-way valve channel, 7-piston channel, 8-filter, 9-electromagnetic valve, 10-sealing ring, 11-one-way valve, 12-piston, 13-microphone, 14-pressure release valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention relates to a triggering method for testing the liquid level of a high-pressure oil-gas well, which is characterized in that a shell 1 is divided into an upper cavity 3 and a lower cavity 4 by a spacer block 2, wherein the upper cavity 3 is communicated with a well head sleeve; high-pressure gas is filled into the upper cavity 3 through a wellhead casing, and the high-pressure gas enters the lower cavity 4 through the one-way valve channel 6; when the pressure of the lower cavity 4 and the upper cavity 3 is balanced, the inflation is stopped; starting a piston driving device to drive a piston 12 to move towards the lower cavity 4 along a piston channel 7, so that the pressure of the lower cavity 4 is increased, and a pressure difference is formed between the upper cavity 3 and the lower cavity 4; at this time, the solenoid valve 9 is started to instantly release the high-pressure gas in the lower cavity 4 through the solenoid valve channel 5 to generate a sound signal, thereby achieving the purpose of percussion.
In the triggering method, the filter 8 is respectively arranged at the channel ports of the one-way valve channel 6, the piston channel 7 and the electromagnetic valve channel 5 close to one side of the upper cavity 3 so as to prevent impurities in the well head sleeve from entering the lower cavity 4 and influencing the triggering effect; impurities in the well head sleeve are prevented from entering the piston channel 7, and the movement and the sealing effect of the piston 12 are influenced.
In the triggering method, a one-way valve 11 is arranged on one side of the one-way valve channel 6 close to the lower cavity 4; gas from upper chamber 3 is allowed to enter lower chamber 4 through one-way valve 11, preventing gas from lower chamber 4 from flowing back into upper chamber 3.
In the percussion method, a microphone 13 is arranged on the shell 1 of the upper cavity 3, so that the microphone 13 is communicated with the upper cavity 3; the received sound signal is converted into a current signal by the microphone 13.
In the above-mentioned percussion method, a pressure relief valve 14 is provided on the housing 1 of the lower chamber 4; when the instrument is disassembled, the pressure release valve 14 is opened, so that the interior of the lower cavity 4 is communicated with the external environment, and safety accidents are prevented.
The percussion device for the liquid level test of the high-pressure oil-gas well, which is formed according to the method, is shown in figure 1 and comprises a shell 1; a partition block 2 is arranged in the shell 1, and the shell 1 is divided into an upper cavity 3 and a lower cavity 4 through the partition block 2; the partition block 2 is provided with an electromagnetic valve channel 5, a one-way valve channel 6 and a piston channel 7; a solenoid valve 9 is arranged on one side of the solenoid valve channel 5 close to the lower cavity 4; one side of the one-way valve channel 6 close to the lower cavity 4 is provided with a one-way valve 11; a piston 12 is arranged in the piston channel 7. In order to achieve better effect, filters 8 are respectively arranged at the passage ports of the electromagnetic valve passage 5, the one-way valve passage 6 and the piston passage 7 close to one side of the upper cavity 3; a microphone 13 is arranged on the shell 1 at the upper cavity 3; a pressure relief valve 14 is arranged at the lower cavity 4 of the shell 1; the piston 12 is connected with the inner wall of the piston channel 7 in a sliding way; and a seal ring 10 is provided on the piston 12.
Examples
The embodiment is used for the triggering method of the liquid level test of the high-pressure oil-gas well, as shown in figure 1, and the arrow in figure 1 is a schematic flow direction of gas in the working process. The upper cavity 3 is connected with a wellhead casing pipe, casing pipe high-pressure gas is filled in the upper cavity 3, the high-pressure gas in the upper cavity 3 is filtered by the filter 8 and then enters the lower cavity 4 through the one-way valve 11, and the pressure of the lower cavity 4 is the same as that of the upper cavity 3. The electromagnetic valve 9 is closed, the piston 12 moves from the upper chamber 3 to the lower chamber 4 under the control of the driving mechanism, and compresses the gas in the lower chamber 4, so that the internal pressure of the lower chamber 4 is increased, and a pressure difference is formed between the lower chamber 4 and the upper chamber 3. The electromagnetic valve 9 is started, high-pressure gas in the lower cavity 4 is released instantly, and a sound signal is generated, so that the aim of percussion is fulfilled.
The front ends of the one-way valve 11 and the electromagnetic valve 9 are both provided with a filter 8 which is mainly used for filtering the gas entering the lower cavity 4 from the upper cavity 3 and preventing impurities in the sleeve gas from entering the lower cavity 4 to influence the percussion effect. The piston 12 is provided with a sealing ring 10, which mainly functions as a seal to prevent the exchange of the casing gas in the upper chamber 3 and the lower chamber 4 through the piston channel 7. The front end of the piston 12 is provided with a filter 8 which mainly prevents impurities in the sleeve gas from entering the piston channel 7 and influencing the movement and sealing effect of the piston 12. The function of the one-way valve 11 is to allow only the casing gas in the upper chamber 3 to enter the lower chamber 4 and to prevent the casing gas in the lower chamber 4 from entering the upper chamber 3. The electromagnetic valve 9 is used for instantly starting to generate sound after a pressure difference is formed between the lower cavity 4 and the upper cavity 3. The microphone 13 is in communication with the upper chamber 3 and primarily converts the received acoustic signal into a current signal. The pressure release valve 14 is communicated with the lower cavity 4, and the main function is to open the pressure release valve 14 when the instrument is disassembled, so that the inside of the instrument is communicated with the external environment, the pressure inside the instrument is released, and safety accidents are prevented.
The invention can carry out the test by adopting the sleeve gas without providing air or compressed nitrogen outside, and can adopt a full-sealed structural design to ensure the sealing property of the device. Even if the firing device breaks down, the good sealing performance can prevent the leakage accident of the oil and gas well. The invention has simple operation, does not use compressed air or compressed nitrogen, and can carry out the test by sending out a test command after the instrument is connected. The safety of the test process is high, and explosion and serious accidents cannot be caused. The invention can solve a series of problems of liquid level test of high-pressure oil-gas wells.
Claims (10)
1. A triggering method for liquid level testing of a high-pressure oil-gas well is characterized by comprising the following steps: the method is that a shell is divided into an upper cavity and a lower cavity by a spacer block, and the upper cavity is communicated with a wellhead casing; high-pressure gas is filled into the upper cavity through the wellhead casing, and the high-pressure gas enters the lower cavity through the one-way valve channel; when the pressure of the lower cavity and the upper cavity is balanced, the inflation is stopped; starting the piston driving device to drive the piston to move towards the lower cavity along the piston channel, so that the pressure of the lower cavity is increased, and a pressure difference is formed between the upper cavity and the lower cavity; at the moment, the electromagnetic valve is started, so that high-pressure gas in the lower cavity is instantly released through the electromagnetic valve channel to generate a sound signal, and the aim of percussion is fulfilled.
2. The percussion method for the liquid level test of high-pressure oil and gas wells according to claim 1, characterized in that: filters are respectively arranged at the passage ports of the one-way valve passage, the piston passage and the electromagnetic valve passage close to one side of the upper cavity so as to prevent impurities in the well head sleeve from entering the lower cavity and influencing the percussion effect; impurities in the well head sleeve are prevented from entering the piston channel, and the movement and sealing effect of the piston are influenced.
3. The percussion method for the liquid level test of high-pressure oil and gas wells according to claim 1, characterized in that: one side of the one-way valve channel close to the lower cavity is provided with a one-way valve; and the gas in the upper cavity is allowed to enter the lower cavity through the one-way valve, and the gas in the lower cavity is prevented from flowing back to the upper cavity.
4. The percussion method for the liquid level test of high-pressure oil and gas wells according to claim 1, characterized in that: a microphone is arranged on the shell of the upper cavity and is communicated with the upper cavity; the received sound signal is converted into a current signal by a microphone.
5. The percussion method for the liquid level test of high-pressure oil and gas wells according to claim 1, characterized in that: a pressure relief valve is arranged on the shell of the lower cavity; when the instrument is disassembled, the pressure release valve is opened, so that the interior of the lower cavity is communicated with the external environment, and safety accidents are prevented.
6. A percussion device for high pressure oil and gas well level testing constructed in accordance with the method of any one of claims 1 to 5, comprising a housing (1); the method is characterized in that: a spacer block (2) is arranged in the shell (1), and the shell (1) is divided into an upper cavity (3) and a lower cavity (4) through the spacer block (2); the partition block (2) is provided with an electromagnetic valve channel (5), a one-way valve channel (6) and a piston channel (7); an electromagnetic valve (9) is arranged on one side of the electromagnetic valve channel (5) close to the lower cavity (4); one side of the one-way valve channel (6) close to the lower cavity (4) is provided with a one-way valve (11); a piston (12) is arranged in the piston channel (7).
7. The firing device for the liquid level test of high-pressure oil and gas wells according to claim 6, wherein: and the electromagnetic valve channel (5), the one-way valve channel (6) and the piston channel (7) are respectively provided with a filter (8) at the channel port close to one side of the upper cavity (3).
8. The firing device for the liquid level test of high-pressure oil and gas wells according to claim 6, wherein: a microphone (13) is arranged on the upper cavity (3) of the shell (1).
9. The firing device for the liquid level test of high-pressure oil and gas wells according to claim 6, wherein: a pressure release valve (14) is arranged at the position, located in the lower cavity (4), of the shell (1).
10. The firing device for the liquid level test of high-pressure oil and gas wells according to claim 6, wherein: the piston (12) is in sliding connection with the inner wall of the piston channel (7); the piston (12) is provided with a sealing ring (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911082559.2A CN110617056B (en) | 2019-11-07 | 2019-11-07 | Firing method and device for testing liquid level of high-pressure oil-gas well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911082559.2A CN110617056B (en) | 2019-11-07 | 2019-11-07 | Firing method and device for testing liquid level of high-pressure oil-gas well |
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| CN110617056A true CN110617056A (en) | 2019-12-27 |
| CN110617056B CN110617056B (en) | 2024-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151068A (en) * | 2021-12-08 | 2022-03-08 | 贵州航天凯山石油仪器有限公司 | Small-size oil well liquid level testing arrangement that integrates |
| CN115788412A (en) * | 2022-12-07 | 2023-03-14 | 贵州航天凯山石油仪器有限公司 | Oil well liquid level measuring device driven by high-power long-stroke electromagnet |
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