CN110397426B - Wellhead high-frequency pressure pulse signal transceiving device and oil exploitation equipment - Google Patents
Wellhead high-frequency pressure pulse signal transceiving device and oil exploitation equipment Download PDFInfo
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- CN110397426B CN110397426B CN201910758717.5A CN201910758717A CN110397426B CN 110397426 B CN110397426 B CN 110397426B CN 201910758717 A CN201910758717 A CN 201910758717A CN 110397426 B CN110397426 B CN 110397426B
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- 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
- 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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- 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
- E21B47/12—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
Abstract
The invention discloses a wellhead high-frequency pressure pulse signal transceiving device, which comprises a valve block, a pilot electromagnetic valve, a pressure sensor and an electric control system, wherein the pilot electromagnetic valve is arranged on the valve block, the electric control system is used for controlling signal transceiving, a high-pressure inlet and a pressure relief outlet are arranged on the valve block, a valve core is movably arranged in the valve block, the high-pressure inlet is communicated with high-pressure liquid in a well, when the pilot electromagnetic valve is in power failure, the high-pressure liquid in the well reaches two ends of the valve core, the valve core is isolated from the high-pressure inlet and the pressure relief outlet to keep the high pressure in the well, and when the pilot electromagnetic valve is in power failure, the high-pressure liquid in the well reaches one end of the valve core and pushes the valve core to ensure that the high-pressure inlet is communicated with the pressure relief outlet to reduce the pressure in the well. The pilot electromagnetic valve has quick response, the generated pressure pulse signal has high quality and reliability, the pressure sensor can receive the signal uploaded by the underground equipment and transmit the signal to the electric control system for decoding, and the device has low cost, greatly lightens the labor intensity of workers and 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 wellhead high-frequency pressure pulse signal receiving and transmitting 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 high-frequency pressure pulse signal transceiving device is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a wellhead high-frequency pressure pulse signal transceiving device, which controls the opening and closing of a pilot electromagnetic valve through an electric control system so as to generate a pressure pulse signal with good quality and high reliability at a wellhead; and receiving temperature and pressure signals uploaded by the underground equipment through the pressure sensor, and transmitting the temperature and pressure signals to the electronic control system for decoding. 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 wellhead high-frequency pressure pulse signal transceiving device which comprises a valve block, a pilot electromagnetic valve and an electric control system, wherein the pilot electromagnetic valve is installed on the valve block, the electric control system is used for controlling the pilot electromagnetic valve, a high-pressure inlet and a pressure relief outlet are formed in the valve block, a valve core is movably installed in the valve block, the high-pressure inlet is communicated with high-pressure liquid in a well, when the pilot electromagnetic valve is powered off, the high-pressure liquid at the high-pressure inlet reaches two ends of the valve core, so that the valve core is isolated from the high-pressure inlet and the pressure relief outlet to keep the high pressure in the well, and when the pilot electromagnetic valve is powered on, the high-pressure liquid at the high-pressure inlet reaches one end of the valve core and pushes the valve core to enable the high-pressure inlet to be communicated with the pressure relief outlet to reduce the pressure in the well.
Preferably, a pressure drop adjusting rod for adjusting the stroke of the valve core is arranged in the valve block.
Preferably, a filter is disposed between the high pressure inlet and the pilot solenoid valve.
Preferably, a vertical through hole is arranged in the valve block, the lower end of the through hole is the high-pressure inlet, the upper end of the through hole is provided with a closed fixing nut, one side of the through hole is provided with a first transverse hole, the outer end of the first transverse hole is the pressure relief outlet, the inner end of the first transverse hole is communicated with the through hole, a third transverse hole and a second transverse hole which are arranged up and down are arranged on the other side of the through hole, the inlet of the filter is communicated with the through hole through the second transverse hole, the outlet of the filter is communicated with the hydraulic control inlet of the pilot electromagnetic valve through a vertical hole, the working port of the pilot electromagnetic valve is communicated with the through hole through the third transverse hole, the valve core is arranged in the through hole, and the height of the valve block is between the second cross hole and the third cross hole, and an emptying outlet communicated with a hydraulic control outlet of the pilot electromagnetic valve is arranged above the valve block.
Preferably, the pilot electromagnetic valve is a two-position three-way electromagnetic valve, when the two-position three-way electromagnetic valve is powered off, the hydraulic control inlet is communicated with the working port, and when the two-position three-way valve is powered on, the working port is communicated with the hydraulic control outlet.
Preferably, high pressure import department installs the inlet connection, the inlet connection is connected with the well head adapter, the outlet connection is installed in the pressure release exit, the evacuation connects is installed in the evacuation exit.
Preferably, the valve core is sleeved with a valve sleeve, the upper end of the valve core is provided with an adjusting hole, the pressure drop adjusting rod penetrates through the sealing fixing nut, the upper end of the pressure drop adjusting rod is provided with an adjusting locking nut matched with the sealing fixing nut, an adjusting interval is arranged between the lower end of the pressure drop adjusting rod and the bottom of the adjusting hole, and the pressure drop adjusting rod is sleeved with a spring.
Preferably, the side surface of the valve core is provided with an annular pressure equalizing groove, and the lower end of the valve core is conical.
Preferably, a pressure gauge and a pressure sensor which are in communication connection with the electronic control system are arranged on the valve block, and a detection port of the pressure gauge and a detection port of the pressure sensor are communicated with the high-pressure inlet.
The invention provides oil exploitation equipment, which comprises water injection well underground water distribution equipment and a wellhead high-frequency pressure pulse signal transceiver arranged on a water injection well, wherein the wellhead high-frequency pressure pulse signal transceiver is specifically any one of the wellhead high-frequency pressure pulse signal transceivers.
The invention provides a wellhead high-frequency pressure pulse signal transceiving device, which comprises a valve block, a pilot electromagnetic valve and an electric control system, wherein the pilot electromagnetic valve is arranged on the valve block, the electric control system is used for controlling the pilot electromagnetic valve, a high-pressure inlet and a pressure relief outlet are arranged on the valve block, a valve core is movably arranged in the valve block, the high-pressure inlet is communicated with high-pressure liquid in a well, when the pilot electromagnetic valve is in power failure, the high-pressure liquid at the high-pressure inlet reaches two ends of the valve core, the valve core is isolated from the high-pressure inlet and the pressure relief outlet to keep high pressure in the well, and when the pilot electromagnetic valve is in power failure, the high-pressure liquid at the high-pressure inlet reaches one end of the valve core and pushes the valve core to ensure that the high-pressure inlet is communicated with the pressure relief outlet to reduce the pressure in the well.
The low-flow electromagnetic valve is used as a pilot stage, the power on/off of the pilot electromagnetic valve is controlled by a software program of the electronic control system, and then the valve block is controlled to be opened and closed, so that a pressure pulse signal can be generated at a high-pressure large-flow well mouth, and the control is very simple. The pressure pulse signal can be conveniently adjusted, and the frequency can be adjusted through a software program of the electric control system. The pilot electromagnetic valve has fast response, so the generated pressure pulse signal has high quality, good stability and high reliability. And the device has low cost, greatly lightens the labor intensity of workers and 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 an embodiment of a wellhead high-frequency pressure pulse signal transceiver according to the present invention;
FIG. 2 is a hydraulic schematic diagram of an embodiment of a wellhead high-frequency pressure pulse signal transceiver provided by the present invention;
FIG. 3 is a schematic top view of one embodiment of a wellhead high frequency pressure pulse signal transceiver device provided in the present invention;
FIG. 4 is a schematic rear view of an embodiment of a wellhead high-frequency pressure pulse signal transceiver according to the present invention;
fig. 5 is an external schematic view of a pilot electromagnetic valve in an embodiment of the wellhead high-frequency pressure pulse signal transceiver provided in the present invention.
Detailed Description
The core of the invention is to provide a wellhead high-frequency pressure pulse signal transceiver, which controls the opening and closing of a pilot electromagnetic valve through an electric control system, so that a pressure pulse signal is generated at a wellhead, the operation and the control are simple, and the signal quality and the stability are good; and receiving temperature and pressure signals uploaded by the underground equipment through the pressure sensor, and transmitting the temperature and pressure signals to the electronic control system for decoding. 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 5, fig. 1 is a schematic cross-sectional view illustrating an embodiment of a wellhead high-frequency pressure pulse signal transceiver according to the present invention; FIG. 2 is a hydraulic schematic diagram of an embodiment of a wellhead high-frequency pressure pulse signal transceiver provided by the present invention; FIG. 3 is a schematic top view of one embodiment of a wellhead high frequency pressure pulse signal transceiver device provided in the present invention; FIG. 4 is a schematic rear view of an embodiment of a wellhead high-frequency pressure pulse signal transceiver according to the present invention; fig. 5 is an external schematic view of a pilot electromagnetic valve in an embodiment of the wellhead high-frequency pressure pulse signal transceiver provided in the present invention.
The invention provides a wellhead high-frequency pressure pulse signal transceiving device, which comprises a valve block 1, a pilot electromagnetic valve 4 and an electric control system, wherein the pilot electromagnetic valve 4 is arranged on the valve block 1, the electric control system controls the pilot electromagnetic valve 4 to be opened and closed, and the valve block 1 is provided with a high-pressure inlet P and a pressure relief outlet T2The valve block 1 is movably provided with a valve core 14, the valve core 14 can move in the valve block 1 to control the conduction state of the valve block 1, and the high-pressure inlet P is communicated with high-pressure liquid in a well.
When the electric control system controls the pilot electromagnetic valve 4 to lose power, the high-pressure liquid at the high-pressure inlet P reaches two ends of the valve core 14, so that the valve core 14 isolates the high-pressure inlet P and the pressure relief outlet T2To maintain high pressure in the well, when the electric control system controls the pilot electromagnetic valve 4 to be electrified, the high-pressure liquid at the high-pressure inlet P can only reach one end of the valve core 14, so as to push the valve core 14 to move, and the high-pressure inlet P is communicated with the pressure relief outlet T2To reduce the pressure in the well.
The low-flow electromagnetic valve is used as a pilot stage, the power on/off of the pilot electromagnetic valve 4 is controlled by a software program of an electric control system, and then the valve block 1 is controlled to be opened and closed, so that a pressure pulse signal can be generated at a high-pressure large-flow well mouth, and the control is very simple. The pressure pulse signal can be conveniently adjusted, and the frequency can be adjusted through a software program of the electric control system. The pilot electromagnetic valve 4 has fast response, so the generated pressure pulse signal has high quality, good stability and high reliability. And the device has low cost, greatly lightens the labor intensity of workers and is suitable for popularization.
Further, in order to adjust the amplitude of the pulse signal, i.e., the magnitude of the pressure drop, a pressure drop adjustment rod 8 for adjusting the stroke of the valve element 14 may be provided in the valve block 1. A filter 3 can be arranged between the high-pressure inlet P and the pilot electromagnetic valve 4 to filter the liquid entering the pilot electromagnetic valve 4 with high precision so as to prevent impurities in the liquid in the well from blocking the pilot electromagnetic valve 4. The liquid flowing through the filter 3 is fed into the periphery, and discharged from the central hole, the filter element is a sintered titanium alloy filter element, and the filtering precision is 5 mu m.
In the wellhead high-frequency pressure pulse signal transceiving device provided by the specific embodiment of the invention, in order to facilitate the arrangement of each inlet/outlet and the pilot electromagnetic valve 4, a vertical through hole is arranged in the valve block 1, the lower end of the through hole is a high-pressure inlet P, the upper end of the through hole is provided with a sealing fixing nut 7 to form a sealing space, one side of the through hole is provided with a first transverse hole, and the outer end of the first transverse hole is a pressure relief outlet T2The inner end of the first transverse hole is communicated with the through hole, the other side of the through hole is provided with a third transverse hole and a second transverse hole, the third transverse hole is positioned above the second transverse hole, the inlet of the filter 3 is communicated with the through hole through the second transverse hole, and the outlet of the filter 3 is communicated with the hydraulic control inlet P of the pilot electromagnetic valve 4 through the vertical hole1Working port A of pilot electromagnetic valve 41The valve core 14 is arranged in the through hole and is highly positioned between the second cross hole and the third cross hole through the third cross hole to communicate the through hole, and a hydraulic control outlet T communicated with the pilot electromagnetic valve 4 is arranged above the valve block 11The evacuation outlet of (1). The arrangement directions of the structures can be adjusted according to the conditions, and meanwhile, in order to ensure normal processing, a fabrication hole needs to be processed and is blocked by a plug, which is all within the protection scope of the invention.
Wherein, the pilot electromagnetic valve 4 is a two-position three-way electromagnetic valve, when the two-position three-way electromagnetic valve is de-energized, the hydraulic control inlet P1 is communicated with the working port A1When two-position three-way is electrified, the working opening A1Connected hydraulic control outlet T1Or other types of solenoid valves may be used.
In order to ensure the normal flow of liquid, an inlet joint 2 is arranged at the position of a high-pressure inlet P, the inlet joint 2 is connected with a wellhead adapter 15, and a pressure relief outlet T2An outlet joint 13 is arranged at the position, and an emptying joint is arranged at the emptying outlet5。
In the wellhead high-frequency pressure pulse signal transceiving device provided by the specific embodiment of the invention, a valve sleeve 12 is sleeved outside a valve core 14, the valve sleeve 12 is fixed by a closed fixing nut 7, the upper end of the valve core 14 is provided with an adjusting hole, a pressure drop adjusting rod 8 penetrates through the closed fixing nut 7, the upper end of the pressure drop adjusting rod 8 is provided with an adjusting locking nut 9 matched with the closed fixing nut 7, an adjusting interval is arranged between the lower end of the pressure drop adjusting rod 8 and the bottom of the adjusting hole, and a spring 11 is sleeved outside the pressure drop adjusting rod 8.
When the valve core 14 isolates the high-pressure inlet P and the pressure relief outlet T2When the pressure drop adjusting rod 8 is rotated clockwise, the adjusting gap is increased, namely the stroke of the valve core 14 is increased, otherwise, the pressure drop adjusting rod 8 is rotated anticlockwise, and the stroke of the valve core 14 is reduced. When the valve core 14 moves, the high-pressure inlet P and the pressure relief outlet T are enabled2When the pressure relief valve is communicated, the amplitude of pressure drop in the well depends on the stroke of the valve core 14, the stroke of the valve core 14 is large, the opening of the pressure relief channel is large, and the pressure drop value is also large, namely the amplitude of a pressure pulse signal is also large; on the contrary, the stroke of the valve core 14 is small, and the amplitude of the pressure pulse signal is also small, so that the amplitude of the pressure pulse signal can be adjusted by rotating the pressure drop adjusting rod 8. After the pressure drop adjusting rod 8 adjusts the pressure, the adjusting locking nut 9 can be screwed to lock and fix the pressure drop adjusting rod 8.
Specifically, an annular pressure equalizing groove is formed in the side face of the valve core 14, the lower end of the valve core 14 is conical, and the angle is 90 degrees; the side surface of the valve core 14 is in clearance fit with the valve sleeve 12, and the sealing mode is clearance sealing; the sealing mode between the conical end surface of the valve core 14 and the valve sleeve 12 is a line contact sealing in a metal sealing mode; the material of main valve element 14 is ceramic material, and the structure, material and sealing manner can be adjusted according to the circumstances, and all fall within the protection scope of the present invention.
On the basis of the wellhead high-frequency pressure pulse signal transceiving device provided by each specific embodiment, the valve block 1 is provided with a pressure gauge 6 and a pressure sensor 10 which are in communication connection with an electric control system, detection ports of the pressure gauge 6 and the pressure sensor 10 are communicated with a high-pressure inlet P, namely the high-pressure inlet P is communicated with the pressure in the well, and when the valve block 1 is opened or closed, the pressure gauge 6 can visually and timely display the pressure change value in the well; the pressure sensor 10 can transmit the temperature and pressure signals uploaded by the downhole equipment to an electronic control system for judgment, display, decoding and other operations.
The specific working mode is as follows: in the initial state, the pilot solenoid valve 4 is in a power-off state, and P of the pilot solenoid valve 41Mouth and A1The ports are communicated, the conical end surface of the valve core 14 is in close contact with the valve sleeve 12 under the action of the spring force to seal the cylindrical hole with the diameter phi a on the valve sleeve 12, at the moment, when a hydraulic gate valve on a wellhead pipeline is opened, high-pressure liquid in a well enters the valve block 1 through the wellhead adapter 15 and the inlet connector 2 of the device, the liquid in the well after entering the valve block 1 is divided into two paths, one path enters the main liquid path and reaches the lower end surface of the valve core 14, namely the cylindrical hole with the diameter phi a of the valve sleeve 12, the other path enters the control liquid path, and the liquid enters the P of the pilot electromagnetic valve after being filtered by the high-precision filter 31Since the pilot solenoid valve 4 is in the power-off state at this time, A of the pilot solenoid valve 41Mouth and P1Is communicated with the mouth and the liquid is discharged from P1Is open to A1The port then enters the upper cavity of the valve core 14, i.e., the upper portion of the cylindrical bore of the valve sleeve 12 having a diameter phib, where phib is greater than phia. At this time, for the valve core 14, the liquid pressures of the upper and lower end surfaces are approximately equal, but the stressed areas are different, the diameter phi b of the hydraulic surface corresponding to the upper end surface of the valve core 14 is larger than the diameter phi a of the hydraulic surface corresponding to the lower end surface, so that the hydraulic pressure of the upper end surface of the valve core 14 is larger than that of the lower end surface, the resultant hydraulic force direction is downward, and the downward spring force is added, so that the conical end surface of the valve core 14 is pressed on the round hole step with the diameter phi a of the valve sleeve 12, and the high-pressure inlet P and the pressure relief outlet T are pressed on the round hole step with the diameter phi a of the valve sleeve 122Is isolated and closed, the liquid path is not communicated, and high pressure is kept.
P of the pilot solenoid valve 4 when the pilot solenoid valve 4 is energized1The port is closed and the pressure liquid from the filter 3 is cut off, a1Mouth and T1The ports are communicated, and the liquid in the upper cavity of the valve core 14 passes through A1Mouth and T1Outlet discharge valveThe pressure outside the block 1 is instantly relieved, the hydraulic pressure of the upper end face of the valve core 14 disappears, the high-pressure hydraulic pressure of the lower end face overcomes the spring force and then quickly pushes the valve core 14 away, and the high-pressure inlet P and the pressure relief outlet T2Communicated with each other, the liquid in the well passes through a pressure relief outlet T2The pressure in the well drops instantaneously, forming a pressure pulse, out of the discharge valve block 1. When the pilot electromagnetic valve 4 is de-energized, 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 above-mentioned wellhead high-frequency pressure pulse signal transceiver, the specific embodiment of the present invention further provides an oil exploitation apparatus including the above-mentioned wellhead high-frequency pressure pulse signal transceiver, and the structure of other parts of the oil exploitation apparatus refers to the prior art, and is not described herein again.
The wellhead high-frequency pressure pulse signal transmitting and receiving 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 wellhead high-frequency pressure pulse signal transceiving device is characterized by comprising a valve block (1), a pilot electromagnetic valve (4) arranged on the valve block (1) and an electric control system used for controlling the pilot electromagnetic valve (4), wherein a high-pressure inlet and a pressure relief outlet are arranged on the valve block (1), a valve core (14) is movably arranged in the valve block (1), the high-pressure inlet is communicated with high-pressure liquid in a well, when the pilot electromagnetic valve (4) is powered off, the high-pressure liquid at the high-pressure inlet reaches two ends of the valve core (14), so that the valve core (14) isolates the high-pressure inlet from the pressure relief outlet to keep the high pressure in the well, when the pilot electromagnetic valve (4) is powered on, the high-pressure liquid at the high-pressure inlet reaches one end of the valve core (14) and pushes the valve core (14), so that the high-pressure inlet is communicated with the pressure relief outlet, to reduce the pressure in the well;
in the initial state, the pilot electromagnetic valve (4) is in a power-off state, and a hydraulic control inlet (P) of the pilot electromagnetic valve (4)1) And the working port (A)1) When a hydraulic gate valve on a wellhead pipeline is opened, high-pressure liquid in a well enters the valve block (1) and then is divided into two paths, one path reaches the lower end face of the valve core (14), and the other path enters the hydraulic control inlet (P) of the pilot electromagnetic valve1) From said liquid-controlled inlet (P)1) To the working port (A)1) Then enters the upper cavity of the valve core (14), the valve core (14) is pressed downwards by the hydraulic resultant force direction, and the valve core (14) leads the high-pressure inlet (P) and the pressure relief outlet (T) to be pressed2) Is isolated and closed, and high pressure is kept;
when the pilot solenoid valve (4) is energized, the pilot-controlled inlet (P) of the pilot solenoid valve (4)1) Is closed, the working port (A) of the pilot solenoid valve (4)1) And a hydraulic control outlet (T)1) The liquid in the upper cavity of the valve core (14) passes through the working port (A)1) And the liquid control outlet (T)1) The pressure is discharged out of the valve block (1), the hydraulic pressure of the upper end face of the valve core (14) disappears, the high-pressure hydraulic pressure of the lower end face pushes the valve core (14) away, and the high-pressure inlet (P) and the pressure relief outlet (T) are arranged2) Is communicated, and the liquid in the well passes through the pressure relief outlet (T)2) And the pressure in the well drops instantaneously after being discharged out of the valve block (1) to form a pressure pulse.
2. A wellhead high-frequency pressure pulse signal transceiving device according to claim 1, wherein a pressure drop adjusting rod (8) for adjusting the stroke of the valve core (14) is arranged in the valve block (1).
3. A wellhead high-frequency pressure pulse signal transceiving device according to claim 2, wherein a filter (3) is arranged between said high-pressure inlet and said pilot solenoid valve (4).
4. The wellhead high-frequency pressure pulse signal transceiving device according to claim 3, wherein a vertical through hole is formed in the valve block (1), the lower end of the through hole is the high-pressure inlet, a closed fixing nut (7) is installed at the upper end of the through hole, a first cross hole is formed in one side of the through hole, the outer end of the first cross hole is the pressure relief outlet, the inner end of the first cross hole is communicated with the through hole, a third cross hole and a second cross hole which are vertically arranged are formed in the other side of the through hole, the inlet of the filter (3) is communicated with the through hole through the second cross hole, the outlet of the filter (3) is communicated with a hydraulic control inlet of the pilot electromagnetic valve (4) through a vertical hole, the working port of the pilot electromagnetic valve (4) is communicated with the through hole through the third cross hole, and the valve core (14) is installed in the through hole, and the height of the valve block is between the second cross hole and the third cross hole, and an emptying outlet communicated with a hydraulic control outlet of the pilot electromagnetic valve (4) is arranged above the valve block (1).
5. The wellhead high-frequency pressure pulse signal transceiving device according to claim 4, wherein the pilot solenoid valve (4) is a two-position three-way solenoid valve, when the two-position three-way solenoid valve is de-energized, the hydraulic control inlet is communicated with the working port, and when the two-position three-way solenoid valve is energized, the working port is communicated with the hydraulic control outlet.
6. A wellhead high-frequency pressure pulse signal transceiving device according to claim 5, wherein an inlet joint (2) is installed at the high-pressure inlet, a wellhead adapter (15) is connected to the inlet joint (2), an outlet joint (13) is installed at the pressure relief outlet, and an emptying joint (5) is installed at the emptying outlet.
7. The wellhead high-frequency pressure pulse signal transceiving device according to claim 4, wherein a valve sleeve (12) is sleeved outside the valve core (14), an adjusting hole is formed in the upper end of the valve core (14), the pressure drop adjusting rod (8) penetrates through the closed fixing nut (7), an adjusting locking nut (9) matched with the closed fixing nut (7) is installed at the upper end of the pressure drop adjusting rod (8), an adjusting interval is formed between the lower end of the pressure drop adjusting rod (8) and the bottom of the adjusting hole, and a spring (11) is sleeved outside the pressure drop adjusting rod (8).
8. The wellhead high-frequency pressure pulse signal transceiving device according to claim 7, wherein an annular pressure equalizing groove is formed in the side surface of the valve core (14), and the lower end of the valve core (14) is conical.
9. A wellhead high-frequency pressure pulse signal transceiving device according to any one of claims 1 to 8, characterized in that a pressure gauge (6) and a pressure sensor (10) which are in communication connection with the electronic control system are arranged on the valve block (1), and detection ports of the pressure gauge (6) and the pressure sensor (10) are communicated with the high-pressure inlet.
10. An oil exploitation device, comprising a water injection well down-hole water distribution device and a wellhead high-frequency pressure pulse signal transceiver installed in the water injection well, characterized in that the wellhead high-frequency pressure pulse signal transceiver is specifically the wellhead high-frequency pressure pulse signal transceiver of any one of claims 1 to 9.
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| CN114165192A (en) * | 2021-12-14 | 2022-03-11 | 四川航天烽火伺服控制技术有限公司 | Electrodynamic type well head pressure pulse signal generating device and oil development equipment |
| CN114183133A (en) * | 2021-12-14 | 2022-03-15 | 四川航天烽火伺服控制技术有限公司 | Pneumatic wellhead pressure pulse signal generating device and oil exploitation equipment |
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| CN202215216U (en) * | 2011-06-24 | 2012-05-09 | 中国石油化工股份有限公司 | Device generating pulse at well mouth by means of solenoid valve |
| CN202148890U (en) * | 2011-06-24 | 2012-02-22 | 中国石油化工股份有限公司 | Device for producing pressure pulse at wellhead of water injection well |
| US9719846B2 (en) * | 2015-08-14 | 2017-08-01 | Halliburton Energy Services, Inc. | Mud pulse detection using distributed acoustic sensing |
| CN105525907B (en) * | 2015-12-17 | 2018-10-19 | 中国石油集团长城钻探工程有限公司 | It is programmable to automatically control downgoing communication system and downlink signal transmission |
| CN106703793B (en) * | 2016-12-15 | 2018-05-29 | 中国科学院地质与地球物理研究所 | Executive device is passed under a kind of control instruction of rotary steering ground |
| CN109184638B (en) * | 2018-09-21 | 2023-10-31 | 中国石油天然气股份有限公司 | Intelligent pressure wave code layered water injection system and process method for water injection well |
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2019
- 2019-08-16 CN CN201910758717.5A patent/CN110397426B/en active Active
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