CN221074210U - Pressure water injection device suitable for oil exploitation - Google Patents
Pressure water injection device suitable for oil exploitation Download PDFInfo
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- CN221074210U CN221074210U CN202322890148.4U CN202322890148U CN221074210U CN 221074210 U CN221074210 U CN 221074210U CN 202322890148 U CN202322890148 U CN 202322890148U CN 221074210 U CN221074210 U CN 221074210U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 52
- 239000003208 petroleum Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000001502 supplementing effect Effects 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 38
- 238000005192 partition Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The pressure water injection device is suitable for petroleum exploitation, and comprises a plunger unit, a hydraulic unit and a water inlet and outlet unit, wherein the hydraulic unit and the water inlet and outlet unit are communicated with the plunger unit; the plunger unit comprises a cylindrical plunger pump cavity and an internal pressurizing plunger, wherein the internal cavity is divided into a first cavity, a second cavity and a third cavity from top to bottom, and the second cavity of the annular sealing ring in the middle of the pressurizing plunger is divided into a first power cavity and a second power cavity; the hydraulic unit pumps the hydraulic oil into the first power cavity or the second power cavity so as to drive the pressurizing plunger to move up and down; the water inlet and outlet unit is used for continuously supplementing water to the first cavity and the third cavity and discharging high-pressure water in the first cavity and the third cavity. The high power density of the hydraulic drive can effectively ensure that the diameter and the stroke of the pressure plunger are not constrained, so the application adopts the large-diameter long-stroke pressure plunger, realizes continuous pressurized water injection while ensuring pressure and displacement, reduces the movement stroke frequency, reduces the wear degree of equipment, and improves the stability and the service life.
Description
Technical Field
The utility model belongs to the technical field of pressure water injection, and particularly relates to a pressure water injection device suitable for petroleum exploitation.
Background
In the petroleum exploitation process, along with the continuous increase of exploitation time, the energy of an oil layer is gradually dissipated, so that the pressure of the oil layer is continuously reduced, the underground crude oil is degassed, the viscosity is increased, the yield is gradually reduced, and the underground crude oil cannot be extracted to form a large amount of dead oil. In order to make up the underground defect caused by crude oil extraction and ensure that the oil layer pressure meets the extraction conditions, high-pressure water injection is needed to be carried out on the oil field.
In the prior art, a high-pressure plunger pump is generally adopted to realize pressure water injection, and the working principle is as follows: the plunger reciprocates in the pump cylinder to change the sealing working volume, so as to convert mechanical energy into hydraulic energy and achieve the effect of absorbing pressure fluid. However, the plunger pump is affected by the strength of the crankshaft, the diameter of the plunger is relatively small, generally not more than 70mm, in order to meet a certain displacement, the frequency of the plunger stroke is relatively high, 350-400 times/min, the high stroke frequency brings a series of problems to the plunger pump, the noise and vibration are high, the pump valve is frequently opened and closed and collides, the bearing bush, the plunger and the filler are worn and aggravated, so that the faults are numerous, the parts are frequently maintained and replaced, the maintenance cost is very high, and particularly under the condition that the working strength is more than 25MPa, the engine body and the crankshaft deform under stress, the vibration and the noise are more severe, and even the normal work cannot be caused.
Disclosure of utility model
Therefore, the utility model aims to provide a pressure water injection device suitable for petroleum exploitation, so as to solve the technical problems of small discharge capacity and poor durability of a high-pressure plunger pump in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The pressure water injection device is suitable for petroleum exploitation, and comprises a plunger unit, a hydraulic unit and a water inlet and outlet unit, wherein the hydraulic unit and the water inlet and outlet unit are communicated with the plunger unit; the plunger unit comprises a cylindrical plunger pump cavity and a pressurizing plunger arranged in the plunger pump cavity, wherein a first baffle plate and a second baffle plate are arranged in the plunger pump cavity at intervals along the height direction, so that an inner cavity of the plunger pump cavity is sequentially divided into a first cavity, a second cavity and a third cavity which are isolated from each other from top to bottom, the pressurizing plunger penetrates through the first baffle plate and the second baffle plate, the length of the pressurizing plunger is larger than the total length of any two adjacent cavities, and an annular sealing ring is arranged in the middle of the pressurizing plunger, so that the second cavity is divided into a first power cavity and a second power cavity which are isolated from each other; the hydraulic unit comprises an oil pump communicated with the first power cavity and the second power cavity, and the hydraulic oil is pumped into the first power cavity and the second power cavity through the oil pump so as to drive the pressurizing plunger to move up and down, so that the water pressure in the first cavity and the third cavity is improved; the water inlet and outlet unit is used for continuously supplementing water to the first cavity and the third cavity and discharging high-pressure water in the first cavity and the third cavity.
The utility model has the beneficial effects that:
the high power density of the hydraulic drive can effectively ensure that the diameter and the stroke of the pressure plunger are not constrained, so that the application adopts the large-diameter long-stroke pressure plunger, realizes continuous pressurized water injection on the premise of ensuring pressure and displacement, reduces the movement stroke frequency to 1-5 stroke frequency per minute, further reduces the abrasion, the equipment maintenance quantity and the maintenance cost of equipment, and improves the stability and the service life of the equipment.
Further, the hydraulic unit further comprises a first hydraulic oil pipe and a second hydraulic oil pipe, the oil pump is communicated with the first power cavity through the first hydraulic oil pipe, and the oil pump is communicated with the second power cavity through the second hydraulic oil pipe.
The hydraulic oil pump has the beneficial effects that hydraulic oil is pumped into the first power cavity through the first hydraulic oil pipe, and hydraulic oil is pumped into the second power cavity through the second hydraulic oil pipe.
Further, the outlet end surfaces of the first hydraulic oil pipe and the second hydraulic oil pipe are tangent to the inner side surface of the plunger pump cavity, and the outlet end of the first hydraulic oil pipe is close to the bottom surface of the first partition plate, and the outlet end of the second hydraulic oil pipe is close to the top surface of the second partition plate
The hydraulic oil pump has the beneficial effects that on one hand, the oil quantity of hydraulic oil entering the first power cavity and the second power cavity can be ensured to the greatest extent, and the hydraulic oil can be completely discharged from the first power cavity and the second power cavity; on the other hand, the contact between the pressurizing plunger and the hydraulic oil pipe in the moving process can be avoided.
Further, the water inlet and drainage unit comprises a water pump, a first communication piece is arranged between the water pump and the first cavity, the first communication piece comprises a first water inlet one-way valve and a first water drainage one-way valve, when the pressurizing plunger moves downwards, water flows into the first cavity through the first water inlet one-way valve, and when the pressurizing plunger moves upwards, high-pressure water in the first cavity is discharged through the first water drainage one-way valve; and a second communication piece is arranged between the water pump and the third cavity, the second communication piece comprises a second water inlet one-way valve and a second water outlet one-way valve, when the pressurizing plunger moves upwards, water flows into the third cavity through the second water inlet one-way valve, and when the pressurizing plunger moves downwards, high-pressure water in the third cavity is discharged through the third water outlet one-way valve.
The water supplementing device has the beneficial effects that water can be continuously supplemented to the first cavity and the third cavity, and water flow confusion is effectively avoided through the arrangement of the water inlet check valve and the water outlet check valve.
Further, still include control system, control system includes microcontroller and with microcontroller input electricity is connected position sensor, microcontroller's output with the oil pump electricity is connected, the last top surface of first cavity and the lower bottom surface of third cavity all is equipped with position sensor, position sensor is used for the response the position signal of pressurization plunger, and will position signal transmission extremely microcontroller, microcontroller is according to position information control the oil pump is right first power chamber or second power chamber is filled with oil.
The intelligent control device has the beneficial effects that the intelligent control of the oil filling and discharging processes of the first power cavity and the second power cavity is realized
Drawings
In order to make the objects, technical solutions and advantageous effects of the present utility model more clear, the present utility model provides the following drawings for description:
Fig. 1 is a schematic diagram of the overall structure of a pressure water injection device suitable for oil exploitation according to a first embodiment of the present utility model.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a sectional view taken along the direction A-A of fig. 2 for illustrating the internal structure of the pressure water injection device.
The figures are marked as follows:
Plunger unit 1, plunger pump chamber 11, pressurizing plunger 12, seal ring 121, first partition 13, second partition 14, first cavity 15, second cavity 16, first power cavity 161, second power cavity 162, third cavity 17, hydraulic unit 2, oil pump 21, first hydraulic oil pipe 22, second hydraulic oil pipe 23, water intake and discharge unit 3, water pump 31, first communication piece 32, first water intake check valve 321, first water discharge check valve 322, second communication piece 33, second water intake check valve 331, second water discharge check valve 332, water outlet 34, control system 4, microcontroller 41, position sensor 42, first position sensor 421, second position sensor 422
Detailed Description
An embodiment one is specifically shown in fig. 1-3.
As shown in fig. 1, a pressure water injection device suitable for petroleum exploitation comprises a plunger unit 1, a hydraulic unit 2 and a water inlet and outlet unit 3, wherein the hydraulic unit 2 and the water inlet and outlet unit 3 are communicated with the plunger unit 1.
In this embodiment, the plunger unit 1 includes a cylindrical plunger pump cavity 11 as shown in fig. 1-3, and a cylindrical pressurizing plunger 12 is disposed in the cavity, where the diameter of the pressurizing plunger 12 is smaller than the diameter of the cavity, and the height of the pressurizing plunger 12 is smaller than the height of the cavity. As shown in fig. 3, the plunger pump cavity 11 is provided with a first annular partition 13 and a second annular partition 14 at intervals along the height direction, in this embodiment, the diameter of the inner ring of the first partition 13 and the diameter of the inner ring of the second partition 14 are both identical to the diameter of the pressurizing plunger 12, and the first partition 13 and the second partition 14 are both slidably connected with the pressurizing plunger 12. The first partition 13, the second partition 14 and the pressurizing plunger 12 divide the internal cavity of the plunger pump cavity 11 into a first cavity 15, a second cavity 16 and a third cavity 17, which are airtight from top to bottom, and it is emphasized that in this embodiment, the length of the pressurizing plunger 12 is greater than the total length of any two adjacent cavities, so that the isolation state between the three cavities is effectively ensured.
An annular sealing ring 121 as shown in fig. 3 is arranged in the center of the pressurizing plunger 12 in the length direction, the outer diameter of the sealing ring 121 is consistent with the inner diameter of the plunger pump cavity 11, the inner diameter of the sealing ring 121 is consistent with the diameter of the pressurizing plunger 12, and the second cavity 16 is divided into a first power cavity 161 and a second power cavity 162 from top to bottom through the sealing ring 121.
As shown in fig. 1 and 3, in the present embodiment, the hydraulic unit 2 is located at one side of the plunger unit 1, and the hydraulic unit 2 includes an oil pump 21, and a first hydraulic oil pipe 22 and a second hydraulic oil pipe 23 that are in communication with the oil pump 21, wherein the oil pump 21 is used for delivering hydraulic oil in an oil tank (not shown in the drawings), an outlet end of the first hydraulic oil pipe 22 extends into the first power chamber 161, and an outlet end of the second hydraulic oil pipe 23 extends into the second power chamber 162. In this embodiment, the end face at the outlet of the first hydraulic oil pipe 22 and the end face at the outlet of the second hydraulic oil pipe 23 are both coincident with the inner side face of the plunger pump cavity 11, and the outlet end of the first hydraulic oil pipe 22 is close to the bottom face of the first partition 13, and the outlet end of the second hydraulic oil pipe 23 is close to the top face of the second partition 14, so that, on one hand, the oil quantity of hydraulic oil entering the first power cavity 161 and the second power cavity 162 can be ensured to the greatest extent, and on the other hand, the hydraulic oil can be ensured to be completely discharged from the first power cavity 161 and the second power cavity 162, and on the other hand, the contact between the pressurizing plunger 12 and the hydraulic oil pipe in the moving process can be avoided.
As shown in fig. 1 and 3, the water inlet and outlet unit 3 is also located on the opposite side of the hydraulic unit 2, and the water inlet and outlet unit 3 includes a water pump 31, where the water pump 31 is used for delivering water in a water storage tank (not shown), and it should be emphasized that, in this embodiment, water is continuously supplied to the first cavity 15 and the third cavity 17 through the water pump 31 at the same time. As shown in fig. 1, a first communicating element 32 is disposed between the water pump 31 and the first cavity 15, the first communicating element 32 includes a first water inlet check valve 321 and a first water outlet check valve 322, a water inlet and a water outlet of the first water inlet check valve 321 are respectively connected with the water pump 31 and the first cavity 15 through pipelines, a water inlet and a water outlet of the first water outlet check valve 322 are respectively connected with the first cavity 15 and the water outlet 34 through pipelines, water flows into the first cavity 15 through the first water inlet check valve 321, and water in the first cavity 15 flows to the water outlet 34 through the first water outlet check valve 322.
As shown in fig. 1, a second communicating member 33 is disposed between the water pump 31 and the third cavity 17, the second communicating member 33 includes a second water inlet check valve 331 and a second water outlet check valve 332, a water inlet and a water outlet of the second water inlet check valve 331 are respectively connected with the water pump 31 and the third cavity 17 through pipelines, a water inlet and a water outlet of the first water outlet check valve 322 are respectively connected with the third cavity 17 and the water outlet 34 through pipelines, water flows into the third cavity 17 through the second water inlet check valve 331, and water in the third cavity 17 flows to the water outlet 34 through the second water outlet check valve 332.
In order to realize intelligent control, the application is also provided with a control system 4, wherein the control system 4 comprises a microcontroller 41 and a position sensor 42, the output end of the position sensor 42 is electrically connected with the input end of the microcontroller 41, and the output end of the microcontroller 41 is electrically connected. In this embodiment, the model STM32-L1 of the microcontroller 41 is provided, and the microcontroller 41 is screwed on the outer side surface of the housing of the oil pump 21.
The type of the position sensor 42 is PS801, and the number of the position sensors 42 is two, that is, the first position sensor 421 and the second position sensor 422, the first position sensor 421 is welded to the upper surface of the first cavity 15, and the second position sensor 422 is welded to the lower surface of the third cavity 17. Under the pressure of the oil pump 21, hydraulic oil continuously flows into the second power cavity 162 through the second hydraulic oil pipe 23 so that the pressurizing plunger 12 continuously moves upwards, and meanwhile, the pressurizing plunger 12 presses the water body in the first cavity 15 to form a high-pressure water body and flows to the water outlet 34 through the first drainage check valve 322 until reaching the water distribution room. When the pressurizing plunger 12 reaches the upper limit of the interior of the plunger pump cavity 11, the first position sensor 421 senses the first position signal and transmits the first position signal to the microcontroller 41, and the microcontroller 41 controls the electromagnetic directional valve (not shown) in the oil pump 21 to switch, that is, the output end of the oil pump 21 is switched from the second hydraulic oil pipe 23 to the first hydraulic oil pipe 22. Under the pressure action of the oil pump 21, hydraulic oil continuously flows into the first power cavity 161 through the first hydraulic oil pipe 22 so that the pressurizing plunger 12 continuously moves downwards, hydraulic oil in the second power cavity 162 flows back into the oil tank through the second hydraulic oil pipe 23, meanwhile, the pressurizing plunger 12 extrudes water in the third cavity 17 to form high-pressure water and flows to the water outlet 34 through the second drainage check valve 332 until reaching the water distribution room, when the pressurizing plunger 12 reaches the lower limit position in the plunger pump cavity 11, the second position sensor 422 senses a second position signal and transmits the second position signal to the microcontroller 41, the microcontroller 41 controls the electromagnetic reversing valve in the oil pump 21 to reverse, namely the output end of the oil pump 21 is converted into the second hydraulic oil pipe 23 through the first hydraulic oil pipe 22, and the process is repeatedly circulated.
It is emphasized that the hydraulic driving of the pressurizing plunger 12 can effectively ensure that the diameter and the stroke of the pressurizing plunger 12 are not constrained based on the high power density of hydraulic driving, and the adoption of the large-diameter long stroke can reduce the movement stroke frequency to 1-5 stroke frequencies per minute on the premise of ensuring the pressure and the displacement, so that the abrasion of equipment, the maintenance amount and the maintenance cost are reduced, and the stability and the service life of the equipment are improved.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the utility model, and that, although the utility model has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (5)
1. The pressure water injection device suitable for petroleum exploitation is characterized by comprising a plunger unit, a hydraulic unit and a water inlet and outlet unit, wherein the hydraulic unit and the water inlet and outlet unit are communicated with the plunger unit; the plunger unit comprises a cylindrical plunger pump cavity and a pressurizing plunger arranged in the plunger pump cavity, wherein a first baffle plate and a second baffle plate are arranged in the plunger pump cavity at intervals along the height direction, so that an inner cavity of the plunger pump cavity is sequentially divided into a first cavity, a second cavity and a third cavity which are isolated from each other from top to bottom, the pressurizing plunger passes through the first baffle plate and the second baffle plate, the length of the pressurizing plunger is larger than the total length of any two adjacent cavities, and an annular sealing ring is arranged in the middle of the pressurizing plunger, so that the second cavity is divided into a first power cavity and a second power cavity which are isolated from each other; the hydraulic unit comprises an oil pump communicated with the first power cavity and the second power cavity, and the oil pump pumps hydraulic oil into the first power cavity or the second power cavity so as to drive the pressurizing plunger to move up and down, so that the water pressure in the first cavity and the third cavity is improved; the water inlet and outlet unit is used for continuously supplementing water to the first cavity and the third cavity and discharging high-pressure water in the first cavity and the third cavity.
2. The pressure water injection device suitable for oil exploitation according to claim 1, wherein the hydraulic unit further comprises a first hydraulic oil pipe and a second hydraulic oil pipe, the oil pump is communicated with the first power cavity through the first hydraulic oil pipe, and the oil pump is communicated with the second power cavity through the second hydraulic oil pipe.
3. The pressure water injection device suitable for petroleum exploitation according to claim 2, wherein the outlet end faces of the first hydraulic oil pipe and the second hydraulic oil pipe are tangential to the inner side face of the cavity of the plunger pump, and the outlet end of the first hydraulic oil pipe is close to the bottom face of the first partition board, and the outlet end of the second hydraulic oil pipe is close to the top face of the second partition board.
4. The pressure water injection device suitable for petroleum exploitation according to claim 1, wherein the water inlet and drainage unit comprises a water pump, a first communication piece is arranged between the water pump and the first cavity, the first communication piece comprises a first water inlet check valve and a first water drainage check valve, when the pressurizing plunger moves downwards, water flows into the first cavity through the first water inlet check valve, and when the pressurizing plunger moves upwards, high-pressure water in the first cavity is discharged through the first water drainage check valve; and a second communication piece is arranged between the water pump and the third cavity, the second communication piece comprises a second water inlet one-way valve and a second water outlet one-way valve, when the pressurizing plunger moves upwards, water flows into the third cavity through the second water inlet one-way valve, and when the pressurizing plunger moves downwards, high-pressure water in the third cavity is discharged through the third water outlet one-way valve.
5. The pressure water injection device suitable for petroleum exploitation according to claim 1, further comprising a control system, wherein the control system comprises a microcontroller and a position sensor electrically connected with an input end of the microcontroller, an output end of the microcontroller is electrically connected with the oil pump, the position sensor is arranged on the upper top surface of the first cavity and the lower bottom surface of the third cavity, the position sensor is used for sensing a position signal of the pressurizing plunger and transmitting the position signal to the microcontroller, and the microcontroller controls the oil pump to charge oil into the first power cavity or the second power cavity according to the position signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322890148.4U CN221074210U (en) | 2023-10-27 | 2023-10-27 | Pressure water injection device suitable for oil exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322890148.4U CN221074210U (en) | 2023-10-27 | 2023-10-27 | Pressure water injection device suitable for oil exploitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074210U true CN221074210U (en) | 2024-06-04 |
Family
ID=91248849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322890148.4U Active CN221074210U (en) | 2023-10-27 | 2023-10-27 | Pressure water injection device suitable for oil exploitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074210U (en) |
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2023
- 2023-10-27 CN CN202322890148.4U patent/CN221074210U/en active Active
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