CN110617056B - Firing method and device for testing liquid level of high-pressure oil-gas well - Google Patents
Firing method and device for testing liquid level of high-pressure oil-gas well Download PDFInfo
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- CN110617056B CN110617056B CN201911082559.2A CN201911082559A CN110617056B CN 110617056 B CN110617056 B CN 110617056B CN 201911082559 A CN201911082559 A CN 201911082559A CN 110617056 B CN110617056 B CN 110617056B
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- lower cavity
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- cavity
- upper cavity
- channel
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- 238000010304 firing Methods 0.000 title claims abstract description 42
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 125000006850 spacer group Chemical group 0.000 claims abstract description 10
- 230000005236 sound signal Effects 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000009527 percussion Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 44
- 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
- 238000004880 explosion Methods 0.000 description 4
- 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
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a firing method and a firing device for testing the liquid level of a high-pressure oil-gas well, wherein a shell is divided into an upper cavity and a lower cavity by a spacer, and the upper cavity is communicated with a wellhead sleeve; high-pressure gas is filled into the upper cavity through the wellhead sleeve, and enters the lower cavity through the one-way valve channel; stopping inflating when the lower cavity and the upper cavity are in pressure balance; starting a piston driving device to drive the piston to move along the direction of 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 this time, the electromagnetic valve is started, so that the high-pressure gas in the lower cavity is instantly released through the electromagnetic valve channel to generate a sound signal, and the purpose of firing is achieved. The invention can test by using the sleeve gas, does not need to provide air or compressed nitrogen from the outside, can adopt a fully-sealed structural design, and ensures the tightness of the device. Even if the firing device fails, the good tightness of the firing device can prevent the oil and gas well from leaking accidents.
Description
Technical Field
The invention relates to a firing method and device for testing the liquid level of a high-pressure oil-gas well, and belongs to the technical field of high-pressure oil-gas well testing.
Background
The fluid 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 that the production measures can be timely adjusted, and the purposes of improving the efficiency, saving energy and reducing consumption are achieved. The depth of the wellhead to the surface of the well reflects the fluid pressure in the well, typically measured by echo.
The sound source in the existing liquid level test mainly comprises three types of sound bomb explosion and compressed nitrogen release and compressed air release. The existing test method has the technical problems of high test cost, inconvenient operation, potential safety hazard, easy explosion, serious accident, leakage of high-pressure oil and gas well, environmental pollution and the like. Thus, the prior art still has shortcomings and needs to be improved.
Disclosure of Invention
The invention aims to provide a firing method and device for testing the liquid level of a high-pressure oil-gas well, so as to eliminate the potential safety hazard of the liquid level test of the high-pressure oil-gas well and reduce the test cost, thereby overcoming the defects of the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention relates to a firing method for testing the liquid level 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, and the upper cavity is communicated with a wellhead sleeve; high-pressure gas is filled into the upper cavity through the wellhead sleeve, and enters the lower cavity through the one-way valve channel; stopping inflating when the lower cavity and the upper cavity are in pressure balance; starting a piston driving device to drive the piston to move along the direction of 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 this time, the electromagnetic valve is started, so that the high-pressure gas in the lower cavity is instantly released through the electromagnetic valve channel to generate a sound signal, and the purpose of firing is achieved.
In the firing method, the filter is respectively arranged at the passage openings 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 wellhead sleeve from entering the lower cavity and influence the firing effect; impurities in the wellhead sleeve are prevented from entering the piston channel, and the movement and sealing effect of the piston are affected.
In the firing method, a one-way valve is arranged on one side of the one-way valve channel close to the lower cavity; 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 firing 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 firing method, a pressure release 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.
The firing device for testing the liquid level of the high-pressure oil-gas well comprises a shell; the shell is internally provided with a spacer block, and the shell is divided into an upper cavity and a lower cavity through the spacer block; the partition block is provided with an electromagnetic valve channel, a one-way valve channel and a piston channel; an electromagnetic valve is arranged on one side of the electromagnetic valve channel close to the lower cavity; 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 firing device, the passage openings of the electromagnetic valve passage, the one-way valve passage and the piston passage near the upper cavity are respectively provided with a filter.
In the firing device, a microphone is arranged at the position of the upper cavity of the shell.
In the firing device, the shell is provided with a pressure relief valve at the lower cavity.
In the firing device, the piston is in sliding connection with the inner wall of the piston channel; the piston is provided with a sealing ring.
By adopting the technical scheme, compared with the prior art, the invention can perform the test by adopting the sleeve gas, does not need to provide air or compressed nitrogen from outside, can adopt a fully-sealed structural design, and ensures the tightness of the device. Even if the firing device fails, the good tightness of the firing device can prevent the oil and gas well from leaking accidents. The invention has simple operation, does not need compressed air or compressed nitrogen, and can test after the instrument is connected, the test command is sent out. The safety of the test process is high, and the explosion can not be generated, so that serious accidents are caused. The invention can solve a series of problems of liquid level test of the high-pressure oil-gas well.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The marks in the drawings are: 1-shell, 2-spacer block, 3-upper chamber, 4-lower chamber, 5-solenoid valve channel, 6-check valve channel, 7-piston channel, 8-filter, 9-solenoid valve, 10-sealing ring, 11-check valve, 12-piston, 13-microphone, 14-relief valve.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
The invention relates to a firing method for testing the liquid level of a high-pressure oil-gas well, as shown in figure 1, which is characterized in that a shell 1 is divided into an upper cavity 3 and a lower cavity 4 by a spacer 2, and the upper cavity 3 is communicated with a wellhead casing; high-pressure gas is filled into the upper cavity 3 through the wellhead sleeve, and enters the lower cavity 4 through the one-way valve channel 6; when the lower cavity 4 and the upper cavity 3 are in pressure balance, stopping inflating; starting a piston driving device to drive a piston 12 to move along a piston channel 7 towards a lower cavity 4, so that the pressure of the lower cavity 4 is increased, and a pressure difference is formed between an upper cavity 3 and the lower cavity 4; at this time, the electromagnetic valve 9 is started, so that the high-pressure gas in the lower cavity 4 is instantaneously released through the electromagnetic valve channel 5 to generate a sound signal, thereby achieving the purpose of firing.
In the firing method, the filter 8 is respectively arranged at the passage openings of the one-way valve passage 6, the piston passage 7 and the electromagnetic valve passage 5 near the upper cavity 3 so as to prevent impurities in the wellhead sleeve from entering the lower cavity 4 and influence the firing effect; impurities in the wellhead casing are prevented from entering the piston channel 7, and the movement and sealing effect of the piston 12 are affected.
In the firing method, a check valve 11 is arranged on one side of the check valve channel 6 close to the lower cavity 4; the gas in the upper chamber 3 is allowed to enter the lower chamber 4 by the check valve 11, and the gas in the lower chamber 4 is prevented from flowing back to the upper chamber 3.
In the firing 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 firing method, a pressure release valve 14 is arranged on the shell 1 of the lower cavity 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 firing device for testing the liquid level of the high-pressure oil-gas well, which is constructed according to the method, comprises a shell 1 as shown in figure 1; the inside of the shell 1 is provided with a spacer block 2, 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 near the lower cavity 4; one-way valve 11 is arranged on one side of the one-way valve channel 6 near the lower cavity 4; a piston 12 is arranged in the piston channel 7. In order to achieve better effect, the passage openings of the electromagnetic valve passage 5, the one-way valve passage 6 and the piston passage 7 near the side of the upper cavity 3 are respectively provided with a filter 8; a microphone 13 is arranged at the upper cavity 3 of the shell 1; a pressure relief valve 14 is arranged at the position of the shell 1 in the lower cavity 4; 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 firing method for the liquid level test of the high-pressure oil-gas well is shown in fig. 1, and the arrow in fig. 1 shows the flow direction of gas in the working process. The upper cavity 3 is connected with a wellhead casing, the casing is filled with high-pressure gas, the high-pressure gas in the upper cavity 3 is filtered by a filter 8 and then enters the lower cavity 4 through a 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 cavity 3 to the lower cavity 4 under the control of the driving mechanism, gas in the lower cavity 4 is compressed, the pressure in the lower cavity 4 is increased, and a pressure difference is formed between the lower cavity 4 and the upper cavity 3. The electromagnetic valve 9 is started, and the high-pressure gas in the lower cavity 4 is instantaneously released to generate a sound signal, so that the purpose of firing is achieved.
The filter 8 is arranged at the front ends of the check valve 11 and the electromagnetic valve 9, and is mainly used for filtering the gas entering the lower cavity 4 from the upper cavity 3, preventing impurities in the sleeve gas from entering the lower cavity 4 and affecting the firing effect. The piston 12 is provided with a sealing ring 10 which mainly functions as a seal and prevents the sleeve gas in the upper chamber 3 and the lower chamber 4 from exchanging through the piston channel 7. The filter 8 is arranged at the front end of the piston 12, and the main function is to prevent impurities in the sleeve gas from entering the piston channel 7, and influence the movement and sealing effect of the piston 12. The function of the non-return 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 solenoid valve 9 is operated to instantaneously start and generate sound after a pressure difference is formed between the lower chamber 4 and the upper chamber 3. The microphone 13 communicates with the upper chamber 3, mainly to convert the received sound 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 interior of the instrument is communicated with the external environment, the pressure in the instrument is released, and the safety accident is prevented.
The invention can test by using the sleeve gas, does not need to provide air or compressed nitrogen from the outside, can adopt a fully-sealed structural design, and ensures the tightness of the device. Even if the firing device fails, the good tightness of the firing device can prevent the oil and gas well from leaking accidents. The invention has simple operation, does not need compressed air or compressed nitrogen, and can test after the instrument is connected, the test command is sent out. The safety of the test process is high, and the explosion can not be generated, so that serious accidents are caused. The invention can solve a series of problems of liquid level test of the high-pressure oil-gas well.
Claims (5)
1. The firing method for the liquid level test of the high-pressure oil-gas well is characterized by comprising the following steps of: the method is that the 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 sleeve, and enters the lower cavity through the one-way valve channel; stopping inflating when the lower cavity and the upper cavity are in pressure balance; starting a piston driving device to drive the piston to move along the direction of 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 purpose of firing is achieved;
filters are respectively arranged at the passage openings 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 wellhead sleeve from entering the lower cavity and influence the firing effect; impurities in the wellhead sleeve are prevented from entering the piston channel, and the movement and sealing effect of the piston are affected;
a one-way valve is arranged on one side of the one-way valve channel close to the lower cavity; allowing the gas in the upper cavity to enter the lower cavity through the one-way valve, and preventing the gas in the lower cavity from flowing back to the upper cavity;
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.
2. The firing method for high pressure oil and gas well fluid level testing according to claim 1, wherein: a pressure release 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.
3. A percussion device for high pressure oil and gas well level testing constructed according to any one of the methods of claims 1-2, 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-way valve (11) is arranged on one side of the one-way valve channel (6) close to the lower cavity (4); a piston (12) is arranged in the piston channel (7);
the passage openings 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) are respectively provided with a filter (8);
the shell (1) is provided with a microphone (13) at the upper cavity (3).
4. A firing device for high pressure oil and gas well level testing as defined in claim 3, wherein: the shell (1) is provided with a pressure relief valve (14) at the lower cavity (4).
5. A firing device for high pressure oil and gas well level testing as defined in claim 3, 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).
Priority Applications (1)
| 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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN110617056A CN110617056A (en) | 2019-12-27 |
| CN110617056B true CN110617056B (en) | 2024-03-26 |
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| CN201911082559.2A Active 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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| 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 |
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