CN114183133A - Pneumatic wellhead pressure pulse signal generating device and oil exploitation equipment - Google Patents
Pneumatic wellhead pressure pulse signal generating device and oil exploitation equipment Download PDFInfo
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- CN114183133A CN114183133A CN202111525460.2A CN202111525460A CN114183133A CN 114183133 A CN114183133 A CN 114183133A CN 202111525460 A CN202111525460 A CN 202111525460A CN 114183133 A CN114183133 A CN 114183133A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000003921 oil Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 5
- 235000020681 well water Nutrition 0.000 claims 1
- 239000002349 well water Substances 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a pneumatic wellhead pressure pulse signal generating device which comprises a valve block, and an air bottle and an electromagnetic air valve which are arranged on the valve block, wherein a core body cavity and a piston cavity are arranged in the valve block, a valve core is arranged in the core body cavity, a pressurizing piston is arranged in the piston cavity, a high-pressure inlet and a pressure relief outlet which are communicated with a working end of the core body cavity are arranged on the valve block, the high-pressure inlet is communicated with a wellhead, a control end of the core body cavity is communicated with an outlet end of the piston cavity, and the air bottle is connected with an inlet end of the piston cavity through the electromagnetic air valve. The electromagnetic air valve has quick response, so that the generated pressure pulse signal has high quality, good stability and high reliability, the control part is separated from the working part, most components in the device are separated from corrosive media in the well, the service life is prolonged, the cost of the device is low, the labor intensity of workers is reduced, and the electromagnetic air valve is suitable for popularization. The invention also discloses oil exploitation equipment comprising the device.
Description
Technical Field
The invention relates to the field of oil exploitation, in particular to a pneumatic wellhead pressure pulse signal generating device. In addition, the invention also relates to oil exploitation equipment comprising the device.
Background
At present, a water injection well is needed to be used in oil exploitation equipment, and for a water distribution method of the water injection well, a pure mechanical water distributor is mainly adopted, water nozzles with different specifications are replaced according to water injection needs to control water distribution amount, the operation is complex, the processes are multiple, and the time consumption is long.
In the intelligent water distribution method, how to accurately and reliably transmit the control signal on the ground to the downhole tool is a relatively critical ring. The pressure pulse transmission is the most applied and mature method, in the intelligent water distribution method, the ground device which generates the pressure pulse signal mostly adopts the way of pressurizing by a high-pressure pump, the specific method is that high pressure water output by a ground high pressure pump is used as a pressure source, and corresponding pressure pulse signals are generated and transmitted to the underground water distribution tool by manually operating the pressure source and a valve on a wellhead device, the method has the disadvantages of high cost caused by adopting high-pressure pump equipment, long time consumption caused by adopting manual operation, high labor intensity of workers, poor pressurization stability of the high-pressure pump, poor quality of generated pressure pulse signals caused by the manual operation, the reliability is low, and signal frequency is low, and when stratum absorbs water seriously, the high-pressure pump is difficult to form obvious pressure differential at the well head, influences pressure pulse's production, and can't receive the pressure signal that water distribution instrument uploaded in the pit.
Therefore, how to provide a stable and efficient wellhead pressure pulse signal generating device is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a pneumatic wellhead pressure pulse signal generating device, which is characterized in that a high-pressure inlet and a pressure relief outlet are communicated or isolated by controlling the opening and closing of an electromagnetic air valve and further pneumatically controlling the movement of a valve core, so that a pressure pulse signal with good quality and high reliability is generated at a wellhead. Another object of the present invention is to provide an oil production installation comprising the above-mentioned device.
In order to solve the technical problems, the invention provides a pneumatic wellhead pressure pulse signal generating device, which comprises a valve block, and a gas cylinder and an electromagnetic gas valve which are arranged on the valve block, wherein a core body cavity and a piston cavity are arranged in the valve block;
when the electromagnetic gas valve is powered off, high-pressure gas in the gas cylinder enters the inlet end of the piston cavity, the pressurizing piston is pushed to move towards the outlet end of the piston cavity, a pressure medium is pushed to enter the control end of the core cavity, the valve core moves towards the working end of the core cavity, and the valve core is isolated from the high-pressure inlet and the pressure relief outlet so as to maintain high pressure in the well;
when the electromagnetic gas valve is electrified, the gas cylinder is isolated, the inlet end and the outlet end of the piston cavity and the control end of the core cavity are decompressed, high pressure in the well enters the working end of the core cavity, the valve core is pushed to move towards the control end of the core cavity, the high-pressure inlet is communicated with the decompression outlet, the pressure in the well is reduced, and a pressure pulse signal is formed.
Preferably, be provided with air inlet, disappointing mouth and gas vent on the valve block, the air inlet is connected electromagnetism pneumatic valve with the gas cylinder, the mouth that loses heart is connected electromagnetism pneumatic valve and external, the gas vent intercommunication piston chamber middle part, when electromagnetism pneumatic valve loses the electricity, the air inlet switches on the entrance point in piston chamber, when electromagnetism pneumatic valve got the electricity, the mouth that loses heart switches on the entrance point in piston chamber.
Preferably, the inlet end diameter of the pressurizing piston is larger than the outlet end diameter.
Preferably, the pressure medium in the control end of the core chamber and the outlet end of the piston chamber is hydraulic oil.
Preferably, the electromagnetic gas valve is a two-position three-way electromagnetic directional valve, and a stop valve is arranged at the outlet of the gas cylinder.
Preferably, be provided with vertical through-hole, piston mounting hole and air valve mounting hole in the valve block, limit nut is installed in order to form in the through-hole upper end the core body chamber, through-hole lower extreme opening does the high pressure import, the pressure release export is the intercommunication the cross bore of through-hole, piston mounting hole is located the valve block downside, lower extreme opening are installed and are sealed nut in order to form the piston chamber, the air valve mounting hole is located the valve block upside, the upper end opening installation the electromagnetism air valve.
Preferably, the valve core is sleeved with a valve sleeve, the lower end of the valve sleeve is provided with a bottom hole communicated with the high-pressure inlet and a side hole communicated with the pressure relief outlet, the valve core moves in the valve sleeve, and the lower end of the valve core is provided with a steel ball for plugging the bottom hole.
Preferably, a core body return spring is arranged between the upper end of the valve core and the limiting nut, and a piston return spring is arranged at the upper end of the pressurizing piston.
Preferably, a pressure sensor which is in communication connection with an electronic control system is arranged on the valve block, and a detection port of the pressure sensor is communicated with the high-pressure inlet.
The invention provides oil exploitation equipment, which comprises water distribution equipment under a water injection well and a pneumatic wellhead pressure pulse signal generating device arranged on the water injection well, wherein the pneumatic wellhead pressure pulse signal generating device is specifically any one of the pneumatic wellhead pressure pulse signal generating devices.
The invention provides a pneumatic wellhead pressure pulse signal generating device which comprises a valve block, and an air bottle and an electromagnetic air valve which are arranged on the valve block, wherein a core body cavity and a piston cavity are arranged in the valve block, a valve core is arranged in the core body cavity, a pressurizing piston is arranged in the piston cavity, a high-pressure inlet and a pressure relief outlet which are communicated with a working end of the core body cavity are arranged on the valve block, the high-pressure inlet is communicated with a wellhead, a control end of the core body cavity is communicated with an outlet end of the piston cavity, and the air bottle is connected with an inlet end of the piston cavity through the electromagnetic air valve.
In the working process, when the electromagnetic gas valve is powered off, high-pressure gas in the gas cylinder enters the inlet end of the piston cavity to push the pressurizing piston to move towards the outlet end of the piston cavity and push pressure media to enter the control end of the core cavity, and the valve core moves towards the working end of the core cavity to isolate the high-pressure inlet and the pressure relief outlet so as to keep high pressure in the well; when the electromagnetic gas valve is electrified, the gas cylinder is isolated, the inlet end and the outlet end of the piston cavity and the control end of the core cavity are decompressed, high pressure in the well enters the working end of the core cavity, the valve core is pushed to move towards the control end of the core cavity, the high-pressure inlet is communicated with the decompression outlet, the pressure in the well is reduced, and a pressure pulse signal is formed.
The high-pressure gas is used as a control power source, the electromagnetic gas valve is used as a control pilot stage, the pressurizing piston is used as a pressure increasing tool, the power on and power off of the electromagnetic gas valve are controlled by a software program of an electric control system, the conduction or isolation of a high-pressure inlet and a pressure relief outlet is further controlled, a pressure pulse signal can be generated at a high-pressure large-flow well mouth, the operation and control are very simple, the pressure pulse signal can be conveniently adjusted, and the frequency can be adjusted by the software program of the electric control system. The electromagnetic gas valve has fast response, is used as an independent control gas source through an independent gas cylinder and is not influenced by environmental change, so that the generated pressure pulse signal has high quality, good stability and high reliability, meanwhile, the control part is separated from the working part, most components in the device are separated from corrosive media in a well, the service life is prolonged, the cost of the device is low, the labor intensity of workers is reduced, and the electromagnetic gas valve is suitable for popularization.
The invention also provides an oil exploitation device comprising the device, and the oil exploitation device has the technical effects, so the oil exploitation device also has the same technical effects, and the detailed description is omitted.
Drawings
FIG. 1 is a schematic cross-sectional view of one embodiment of a pneumatic wellhead pressure pulse signal generating device provided by the present invention;
FIG. 2 is a hydraulic schematic diagram of an electromagnetic gas valve de-energized in an embodiment of the pneumatic wellhead pressure pulse signal generating device provided by the present invention;
fig. 3 is a hydraulic schematic diagram of an electromagnetic gas valve powered on in an embodiment of the pneumatic wellhead pressure pulse signal generating device provided by the invention.
Detailed Description
The core of the invention is to provide a pneumatic wellhead pressure pulse signal generating device, which is characterized in that a high-pressure inlet and a pressure relief outlet are communicated or isolated by controlling the opening and closing of an electromagnetic air valve and further pneumatically controlling the movement of a valve core, so that a pressure pulse signal with good quality and high reliability is generated at a wellhead. Another core of the invention is to provide an oil production installation comprising the above-mentioned device.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic cross-sectional view illustrating an embodiment of a pneumatic wellhead pressure pulse signal generating device according to the present invention; FIG. 2 is a hydraulic schematic diagram of an electromagnetic gas valve de-energized in an embodiment of the pneumatic wellhead pressure pulse signal generating device provided by the present invention; fig. 3 is a hydraulic schematic diagram of an electromagnetic gas valve powered on in an embodiment of the pneumatic wellhead pressure pulse signal generating device provided by the invention.
The specific embodiment of the invention provides a pneumatic wellhead pressure pulse signal generating device, which comprises a valve block 1, and an air bottle 2 and an electromagnetic air valve 3 which are arranged on the valve block 1, wherein a core body cavity and a piston cavity are arranged in the valve block 1, a valve core 4 is arranged in the core body cavity, the core body cavity is divided into a working end and a control end, namely the working end and the control end are respectively positioned at two ends of the valve core 4, a pressurizing piston 5 is arranged in the piston cavity, the piston cavity is divided into an inlet end and an outlet end, namely the inlet end and the outlet end are respectively positioned at two ends of the pressurizing piston 5. A high-pressure inlet P1 and a pressure relief outlet T1 are arranged on the valve block 1, the high-pressure inlet P1 and the pressure relief outlet T1 are communicated with the working end of the core body cavity, and the high-pressure inlet P1 is communicated with a well head 6. Specifically, joints may be installed at the high pressure inlet P1 and the pressure relief outlet T1, the valve block 1 is installed on the wellhead 6 through the joints, and high pressure liquid in the well is introduced into the high pressure inlet P1. Meanwhile, the control end of the core cavity is communicated with the outlet end of the piston cavity, and the gas cylinder 2 is connected with the inlet end of the piston cavity through the electromagnetic gas valve 3.
In the working process, when the electromagnetic gas valve 3 is powered off, the inlet ends of the gas cylinder 2 and the piston cavity are conducted through the electromagnetic gas valve 3, high-pressure gas in the gas cylinder 2 enters the inlet end of the piston cavity, the pressurizing piston 5 is pushed to move towards the outlet end of the piston cavity, and pressure media in the outlet end of the piston cavity are pushed to enter the control end of the core cavity, so that the pressure media push the valve core 4 to move towards the working end of the core cavity, the valve core 4 enters the working end of the core cavity, a high-pressure inlet P1 and a pressure relief outlet T1 which are positioned at the working end of the core cavity are isolated, high-pressure liquid in the well cannot be discharged, and high pressure in the well is kept.
When the electromagnetic gas valve 3 is electrified, the gas cylinder 2 is isolated, and meanwhile, the inlet end of the piston cavity is communicated with the outside, so that the pressure of the inlet end of the piston cavity is relieved, the pressurizing piston 5 does not push pressure media in the outlet end of the piston cavity and the control end of the core body cavity any more, namely, the outlet end of the piston cavity and the control end of the core body cavity are relieved, high-pressure liquid in the well enters the working end of the core body cavity from a high-pressure inlet P1, the valve core 4 is pushed to move towards the control end of the core body cavity, the valve core 4 is made to retreat from the working end of the core body cavity, the high-pressure inlet P1 and the pressure relief outlet T1 are not influenced any more, the high-pressure inlet P1 is communicated with the pressure relief outlet T1, the high-pressure liquid in the well is discharged from the pressure relief outlet T1, the pressure in the well is reduced, and a pressure pulse signal is formed.
The high-pressure gas is used as a control power source, the electromagnetic gas valve 3 is used as a control pilot stage, the pressurizing piston 5 is used as a pressure increasing tool, the electric power of the electromagnetic gas valve 3 is controlled by a software program of an electric control system, and the high-pressure inlet P1 and the pressure relief outlet T1 are controlled to be conducted or isolated, so that a pressure pulse signal can be generated at the high-pressure large-flow well mouth 6, the operation and the control are very simple, the pressure pulse signal can be conveniently adjusted, and the frequency can be adjusted by the software program of the electric control system. The electromagnetic gas valve 3 has fast response, is used as an independent control gas source through an independent gas cylinder and is not influenced by environmental change, so that the generated pressure pulse signal has high quality, good stability and high reliability, meanwhile, the control part is separated from the working part, most components in the device are separated from corrosive media in a well, the service life is prolonged, the cost of the device is low, the labor intensity of workers is reduced, and the electromagnetic gas valve is suitable for popularization.
Specifically, for stable connection, an air inlet P2, an air release port T2 and an air outlet T3 are arranged on the valve block 1, the inner end of the air inlet P2 is connected with the electromagnetic valve 3, the outer end of the air inlet P2 is connected with the air bottle 2, the inner end of the air release port T2 is connected with the electromagnetic valve 3, the outer end of the air outlet T3 is connected with the middle of the piston cavity, the outer end of the air outlet P2 is connected with the outside, the pressurization piston 5 can move smoothly, when the electromagnetic valve 3 is powered off, the air inlet P2 conducts the inlet end of the piston cavity, and when the electromagnetic valve is powered on, the air release port T2 conducts the inlet end of the piston cavity. Wherein, the electromagnetic gas valve 3 is a two-position three-way electromagnetic directional valve, the stop valve 7 is arranged at the outlet of the gas cylinder 2, and other types of valves can be adopted, which are all within the protection scope of the invention.
Preferably, the diameter of the inlet end of the booster piston 5 is larger than that of the outlet end, and the pressure medium in the control end of the core cavity and the outlet end of the piston cavity is hydraulic oil. The pressure medium at the inlet end of the booster piston 5 is gas, the source of high-pressure gas is relatively simple, the cost is low, the oil liquid is used as liquid, the volume compressibility is small under high pressure, the pressure of the booster piston 5 can be rapidly transmitted to the valve core 4, meanwhile, the air and the oil liquid are used as working media, the critical components such as the electromagnetic air valve 3 can be prevented from contacting the highly corrosive liquid in the well, and the service life of the device is greatly prolonged.
In the pneumatic wellhead pressure pulse signal generating device provided by the specific embodiment of the invention, a vertical through hole, a piston mounting hole and a gas valve mounting hole are arranged in a valve block 1, a limit nut 8 is arranged at the upper end of the through hole to form a core cavity, a high-pressure inlet P1 is arranged at the lower end opening of the through hole, a pressure relief outlet T1 is a transverse hole communicated with the through hole, the piston mounting hole is positioned at the lower side of the valve block 1, a sealing nut 9 is arranged at the lower end opening to form a piston cavity, the gas valve mounting hole is positioned at the upper side of the valve block 1, an electromagnetic gas valve 3 is arranged at the upper end opening, and a plurality of channels are arranged in the valve block 1 to connect each cavity and each opening.
Furthermore, a valve sleeve 10 is sleeved outside the valve core 4, a bottom hole communicated with the high-pressure inlet P1 and a side hole communicated with the pressure relief outlet T1 are formed in the lower end of the valve sleeve 10, the valve core 4 moves in the valve sleeve 10, a steel ball 11 for plugging the bottom hole is arranged at the lower end of the valve core 4, and when the high-pressure inlet P1 and the pressure relief outlet T1 are isolated, the valve core 4 pushes the steel ball 11 to be tightly propped, so that the steel ball 11 tightly plugs the bottom hole of the valve sleeve 10, and high-pressure liquid in a well cannot be discharged. Meanwhile, mounting holes are formed in the upper end and the lower end of the valve core 4, a core body return spring 12 is arranged between the upper end of the valve core 4 and the limiting nut 8, and a piston return spring 13 is arranged at the upper end of the pressurizing piston 5 and is used for helping the pressure relief of the rear part to return.
The middle part of the valve core 4 is provided with a sealing ring which separates the upper and lower spaces between the valve core 4 and the valve sleeve 10; the valve core 4 is made of ceramic material, and the structure, material, sealing manner, etc. can be adjusted according to the situation, and the steel ball 11 is made of ceramic, all of which are within the protection scope of the present invention.
On the basis of the pneumatic wellhead pressure pulse signal generating device provided by each embodiment, the valve block 1 is provided with a pressure sensor 14 which is in communication connection with an electric control system, and a detection port of the pressure sensor 14 is communicated with the high-pressure inlet P1I.e. communicating with the pressure in the well, when the valve block 1 is opened or closed, the pressure sensor 14 can transmit the pressure signal in the well to the electronic control system for judgment, display, decoding and other operations.
The specific working mode is as follows: a pneumatic wellhead pressure pulse signal generating device is arranged on a wellhead 6 through an inlet joint, in an initial state, an electromagnetic air valve 3 is in a power-off state, an air inlet P2 is communicated with a working port, high-pressure air in a high-pressure air bottle 2 enters an inlet end below a booster piston 5 through the electromagnetic air valve 3, namely a cylindrical hole with the diameter phi d, an outlet end above the booster piston 5, namely a cylindrical hole with the diameter phi c, because phi c is less than phi d, according to the stress balance of the booster piston 5, the pressure at the position of the cylindrical hole phi c is greater than the pressure at the position of phi d, the pressure is increased and then is transmitted to a control end above a valve core 4, namely a cylindrical hole with the diameter phi b through oil liquid, the valve core 4 pushes a steel ball 11, the steel ball 11 is pressed on a bottom hole of a valve sleeve 10, the cylindrical hole with the diameter phi a on the valve sleeve 10 is sealed, wherein phi b is greater than phi a, so the pressure at the position of phi b can be less than the pressure at the position of phi a, thus isolating the high pressure inlet P1 from the pressure relief outlet T1, when the hydraulic gate valve on the wellhead piping is opened, the high pressure liquid in the well enters the valve block 1 through the inlet connector of the device, and the high pressure in the well is maintained because the high pressure inlet P1 and the pressure relief outlet T1 are isolated.
When the electric control system controls the electromagnetic gas valve 3 to be electrified, the gas inlet P2 is closed, the working port is communicated with the gas release port T2, the high-pressure gas in the high-pressure gas cylinder 2 is cut off, the pressure loss occurs at the lower part of the pressurizing piston 5, namely the cylindrical hole of phi d, the pressure disappears at the cylindrical hole of phi c and the cylindrical hole of phi b at the upper part of the valve core 4, the high-pressure liquid pressure at the well mouth 6 can quickly push the valve core 4 and the steel ball 11 away, the high-pressure inlet P1 is communicated with the pressure release outlet T1, the liquid in the well is discharged out of the valve block 1 through the pressure release outlet T1, the pressure in the well instantly drops, and a pressure pulse is formed. When the electromagnetic gas valve 3 loses power, the valve block 1 is closed again, the pressure in the well rises again and returns to the initial pressure, and the steps are repeated.
In addition to the pneumatic wellhead pressure pulse signal generating device, a specific embodiment of the present invention further provides an oil exploitation apparatus including the pneumatic wellhead pressure pulse signal generating device, and the structure of other parts of the oil exploitation apparatus refers to the prior art, which is not described herein again.
The pneumatic wellhead pressure pulse signal generating device and the oil exploitation equipment provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The pneumatic wellhead pressure pulse signal generating device is characterized by comprising a valve block (1), and a gas cylinder (2) and an electromagnetic gas valve (3) which are arranged on the valve block (1), wherein a core body cavity and a piston cavity are arranged in the valve block (1), a valve core (4) is arranged in the core body cavity, a pressurizing piston (5) is arranged in the piston cavity, a high-pressure inlet (P1) and a pressure relief outlet (T1) which are communicated with the working end of the core body cavity are arranged on the valve block (1), the high-pressure inlet (P1) is communicated with a wellhead (6), the control end of the core body cavity is communicated with the outlet end of the piston cavity, and the gas cylinder (2) is connected with the inlet end of the piston cavity through the electromagnetic gas valve (3);
when the electromagnetic gas valve (3) is powered off, high-pressure gas in the gas cylinder (2) enters the inlet end of the piston cavity, the pressurizing piston (5) is pushed to move towards the outlet end of the piston cavity, a pressure medium is pushed to enter the control end of the core cavity, the valve core (4) moves towards the working end of the core cavity, and the valve core (4) is enabled to isolate the high-pressure inlet (P1) and the pressure relief outlet (T1) so as to keep high pressure in the well;
when the electromagnetic gas valve (3) is electrified, the gas cylinder (2) is isolated, the inlet end and the outlet end of the piston cavity and the control end of the core cavity are decompressed, high pressure in the well enters the working end of the core cavity, the valve core (4) is pushed to move towards the control end of the core cavity, the high-pressure inlet (P1) and the decompression outlet (T1) are communicated, the pressure in the well is reduced, and a pressure pulse signal is formed.
2. The pneumatic wellhead pressure pulse signal generation device according to claim 1, characterized in that an air inlet (P2), an air release port (T2) and an air outlet (T3) are arranged on the valve block (1), the air inlet (P2) is connected with the electromagnetic valve (3) and the air bottle (2), the air release port (T2) is connected with the electromagnetic valve (3) and the outside, the air outlet (T3) is communicated with the middle of the piston cavity, when the electromagnetic valve (3) is de-energized, the air inlet (P2) is communicated with the inlet end of the piston cavity, and when the electromagnetic valve is energized, the air release port (T2) is communicated with the inlet end of the piston cavity.
3. A pneumatic wellhead pressure pulse signal generation device according to claim 2, characterized in that the inlet end diameter of the booster piston (5) is larger than the outlet end diameter.
4. The pneumatic wellhead pressure pulse signal generating device of claim 3, wherein the pressure medium in the control end of the core chamber and the outlet end of the piston chamber is hydraulic oil.
5. The pneumatic wellhead pressure pulse signal generation device according to claim 4, characterized in that the electromagnetic gas valve (3) is a two-position three-way electromagnetic directional valve, and a stop valve (7) is arranged at the outlet of the gas cylinder (2).
6. The pneumatic wellhead pressure pulse signal generation device according to claim 1, characterized in that a vertical through hole, a piston mounting hole and a gas valve mounting hole are arranged in the valve block (1), a limit nut (8) is mounted at the upper end of the through hole to form the core cavity, the lower end opening of the through hole is the high-pressure inlet (P1), the pressure relief outlet (T1) is a transverse hole communicated with the through hole, the piston mounting hole is located at the lower side of the valve block (1), a closing nut (9) is mounted at the lower end opening to form the piston cavity, the gas valve mounting hole is located at the upper side of the valve block (1), and the electromagnetic gas valve (3) is mounted at the upper end opening.
7. The pneumatic wellhead pressure pulse signal generating device as claimed in claim 6, characterized in that a valve sleeve (10) is sleeved outside the valve core (4), a bottom hole communicated with the high pressure inlet (P1) and a side hole communicated with the pressure relief outlet (T1) are arranged at the lower end of the valve sleeve (10), the valve core (4) moves in the valve sleeve (10), and a steel ball (11) for plugging the bottom hole is arranged at the lower end of the valve core (4).
8. The pneumatic wellhead pressure pulse signal generating device according to claim 7, characterized in that a core body return spring (12) is arranged between the upper end of the valve core (4) and the limiting nut (8), and a piston return spring (13) is arranged at the upper end of the pressurizing piston (5).
9. The pneumatic wellhead pressure pulse signal generation device as claimed in any one of claims 1 to 8, characterized in that a pressure sensor (14) which is in communication connection with an electronic control system is arranged on the valve block (1), and a detection port of the pressure sensor (14) is communicated with the high-pressure inlet (P1).
10. An oil exploitation device, characterized in that, includes water injection well water distribution equipment and installs in the pneumatic type well head pressure pulse signal generating device of water injection well, pneumatic type well head pressure pulse signal generating device is specifically claim 1 to 9 any one the pneumatic type well head pressure pulse signal generating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111525460.2A CN114183133B (en) | 2021-12-14 | 2021-12-14 | Pneumatic wellhead pressure pulse signal generating device and petroleum exploitation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111525460.2A CN114183133B (en) | 2021-12-14 | 2021-12-14 | Pneumatic wellhead pressure pulse signal generating device and petroleum exploitation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183133A true CN114183133A (en) | 2022-03-15 |
| CN114183133B CN114183133B (en) | 2024-08-20 |
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| CN112747156A (en) * | 2021-01-12 | 2021-05-04 | 北京卫星制造厂有限公司 | High-precision large-pressure-reduction-ratio automatic pressure-regulating gas pressure-stabilizing pressure-reducing combined valve |
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| US5218986A (en) * | 1992-04-13 | 1993-06-15 | Farwell Duane C | Pneumatically pressurized water pumping apparatus |
| CN102883990A (en) * | 2009-09-21 | 2013-01-16 | 诺信公司 | Pneumatically actuated liquid dispensing valve |
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| CN114183133B (en) | 2024-08-20 |
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