CN220204099U - Reciprocating type sucker rod pump relay load shedding deep drawing device - Google Patents
Reciprocating type sucker rod pump relay load shedding deep drawing device Download PDFInfo
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- CN220204099U CN220204099U CN202320083309.6U CN202320083309U CN220204099U CN 220204099 U CN220204099 U CN 220204099U CN 202320083309 U CN202320083309 U CN 202320083309U CN 220204099 U CN220204099 U CN 220204099U
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- sucker rod
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- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 34
- 238000005086 pumping Methods 0.000 description 34
- 230000001603 reducing effect Effects 0.000 description 18
- 239000003129 oil well Substances 0.000 description 15
- 239000007788 liquid Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The utility model provides a reciprocating type has pole pump relay load shedding deep drawing device, the external diameter of going up hollow piston rod is less than the external diameter of lower hollow piston, go up the pump barrel and install on breathing joint, the lower part of going up hollow piston rod is connected with the upper portion of lower hollow piston, go up hollow piston rod, the hole of lower hollow piston is the fluid-discharge channel, go up the pump barrel, breathing joint suit is on last hollow piston rod, lower hollow piston is put into down in the pump barrel, the breathing joint is installed in the upper portion of lower pump barrel, the lateral wall of breathing joint has the breathing hole, the hydraulic feedback pump comprises active cell and stator, the active cell can reciprocate in the stator, the lower part of lower hollow piston and the upper portion of the active cell of hydraulic feedback pump combine into an organic whole, the lower part of lower pump barrel and the upper portion of the stator of hydraulic feedback pump combine into an organic whole, lower pump barrel, hydraulic feedback pump put into the outer tube, the breathing joint is connected in the upper portion of outer tube, the breathing hole in the outer tube, form annular space passageway between outer tube and the lower pump barrel, the hydraulic feedback pump.
Description
Technical Field
The utility model relates to an oil pumping device for an oil field, in particular to a relay load-reducing deep pumping device of a reciprocating sucker-rod pump.
Background
The reciprocating sucker rod pumping device for oil field includes pumping unit, sucker rod, oil pump and oil pipe, and the pumping unit is installed on ground and in the shaft of oil well. In the process of pumping oil by adopting a reciprocating sucker rod pump in a deep well and an ultra-deep well (deep pumping and ultra-deep pumping refer to pumping oil by lowering the pump below kilometers or even below thousands of meters), the load born by an oil pumping unit, a sucker rod, an oil pump and an oil pipe is large, the stroke loss generated by elastic expansion and contraction of the sucker rod and the oil pipe is large, the gap leakage between a piston and a pump cylinder of the oil pump is large, the pump efficiency and the system efficiency are low, the problems of breaking and eccentric wear caused by unstable bending of the sucker rod at the lower part are outstanding, and the service life of the oil pipe, the sucker rod and the oil pump at the lower part is short.
Therefore, the technical staff researches a reciprocating type sucker rod pump subsection pumping device, which installs a hydraulic feedback pump on an oil pipe and a sucker rod between a wellhead and an oil well pump, well fluid is pumped to the hydraulic feedback pump by the sucker rod pump and then is pumped to the ground by the hydraulic feedback pump in a relay way, so that the pressure in the oil pipe between the wellhead and the oil well pump is divided into an upper pressure system and a lower pressure system, the pressure of the oil pipe, the sucker rod and the oil well pump under the installation position of the hydraulic feedback pump and the load of the liquid column are reduced, the thrust of the well fluid on the bottom of the sucker rod column during the downstroke is reduced, the stroke loss caused by the elastic expansion of the sucker rod and the oil pipe under the installation position of the hydraulic feedback pump can be reduced, the gap leakage quantity of the oil well pump installed under the pipe column is reduced, the pumping efficiency and the pumping system efficiency of the hydraulic feedback pump can be improved, and the service life of the oil pipe, the sucker rod and the oil well pump under the installation position can be prolonged. However, this technique requires that the theoretical displacement of the hydraulic feedback pump is larger than that of the oil pump installed at the lower part of the pipe string to achieve the above-mentioned object, and thus requires that the piston diameter of the hydraulic feedback pump is larger than that of the oil pump, so that the load of the sucker rod above the installation position of the hydraulic feedback pump is increased, thereby generating adverse effects.
Although the defect of increasing load can be overcome by installing a sucker rod relief device (such as the sucker rod relief device of China patent 2012202957131) on the reciprocating type sucker rod pump subsection pumping device, the load of the sucker rod and the pumping unit on the installation position is reduced, and the gap leakage of two groups of pistons and pump cylinders in the sucker rod relief device can reduce the oil well yield. Moreover, the problem that the load shedding effect of the existing sucker rod load shedding device is influenced by the sleeve pressure exists, when the sleeve liquid level is high, the load shedding effect is poor, the defect of increasing the load cannot be completely overcome, for example, the load shedding effect does not exist when the sleeve pressure is at the wellhead (the situation that the sleeve is diluted), and the defect of increasing the load cannot be overcome.
Disclosure of Invention
The utility model aims to design a relay load-reducing deep pumping device of a reciprocating sucker-rod pump, which can reduce the load of a sucker rod above the installation position of the device, overcome the problems existing after the reciprocating sucker-rod pump segmented pumping device is installed on a pipe column, and reduce the pressure and the load of a liquid column borne by an oil pipe, a sucker rod and an oil pump below the installation position of the device.
The purpose of the utility model is realized in the following way: the hydraulic feedback device comprises an upper pump cylinder, an upper hollow piston rod, a breathing joint, a lower pump cylinder, a lower hollow piston and a hydraulic feedback pump, wherein the outer diameter of the upper hollow piston rod is smaller than that of the lower hollow piston, the upper pump cylinder is arranged on the breathing joint, the lower part of the upper hollow piston rod is connected with the upper part of the lower hollow piston, the inner holes of the upper hollow piston rod and the lower hollow piston are liquid discharge channels, the upper pump cylinder and the breathing joint are sleeved on the upper hollow piston rod, the upper hollow piston rod is sealed in a matched manner with the upper pump cylinder, the lower hollow piston is placed in the lower pump cylinder, the lower hollow piston is sealed in a matched manner with the lower pump cylinder, the breathing joint is arranged on the upper part of the lower pump cylinder, the side wall of the breathing joint is provided with breathing holes, the breathing holes are communicated with the lower end of the upper pump cylinder and the upper end of the lower pump cylinder, the hydraulic feedback pump consists of a rotor and a stator, the rotor can reciprocate in the stator, the lower part of the lower hollow piston is combined with the upper part of the stator of the hydraulic feedback pump into a whole, the lower part of the lower pump cylinder is combined into a whole, the lower part of the hydraulic feedback pump cylinder is placed in the hydraulic feedback pump, the lower part of the hydraulic feedback pump is connected with the outer pipe, and the upper part of the hydraulic feedback pump is communicated with the upper part of the hydraulic feedback pump, and the upper part of the hydraulic feedback pump is formed in the annulus.
The beneficial effects of the utility model are as follows: the hydraulic feedback pump divides the pressure in the oil pipe between the wellhead and the oil well pump into two pressure systems, so that the pressure and the liquid column load borne by the oil pipe, the oil pumping rod and the oil well pump under the hydraulic feedback pump are reduced, the thrust of the well liquid on the bottom of the oil pumping rod column during the downstroke is reduced, the stroke loss and the gap leakage of the oil pumping pump under the hydraulic feedback pump can be reduced, the pump efficiency and the system efficiency can be improved, the problems of disconnection and eccentric wear caused by unstable bending of the lower oil pumping rod can be reduced, and the service life of the oil pipe, the oil pumping rod and the oil well pump under the hydraulic feedback pump can be prolonged. According to the utility model, the hydraulic feedback pump is combined with the sucker rod load-reducing device, so that the defect that the load of the sucker rod is increased at the position where the hydraulic feedback pump is arranged in the tubular column is overcome, the leakage fluid of the load-reducing device is recovered by the hydraulic feedback pump by the arranged outer tube, the inside of the load-reducing device is isolated from the sleeve, and the problems that the yield loss and the load-reducing effect of the existing sucker rod load-reducing device are influenced by the pressure of the sleeve are solved. Therefore, the utility model has obvious economic benefit when being used for deep pumping of the oil well.
Drawings
Fig. 1 is an assembly view of an embodiment of the present utility model.
Description of the embodiments
An embodiment of the present utility model will be described with reference to fig. 1.
As shown in fig. 1, the embodiment of the utility model comprises an upper sucker rod joint 1, an upper oil pipe 2, an upper pump cylinder 3, an upper hollow piston rod 4, a breathing joint 5, a lower pump cylinder 7, a lower hollow piston 8, a hydraulic feedback pump 9, an upper sucker rod 10 and an upper oil pipe 11, wherein the outer diameter of the upper hollow piston rod 4 is smaller than that of the lower hollow piston 8, the upper pump cylinder 3 is arranged on the breathing joint 5, the lower part of the upper hollow piston rod 4 is connected with the upper part of the lower hollow piston 8, the inner holes of the upper hollow piston rod 4 and the lower hollow piston 8 are drain passages, the upper pump cylinder 3 and the breathing joint 5 are sleeved on the upper hollow piston rod 4, the upper hollow piston rod 4 is sealed with the upper pump cylinder 3 in a matched manner, the lower hollow piston 8 is put into the lower pump cylinder 7, the lower hollow piston 8 is sealed with the lower pump cylinder 7 in a matched manner, the breathing joint 5 is arranged on the upper part of the lower pump cylinder 7, the side wall of the breathing joint 5 is provided with a breathing hole 5-1, the breathing hole 5-1 is communicated with the lower end of the upper pump cylinder 3 and the upper end of the lower pump cylinder 7, the hydraulic feedback pump 9 consists of a rotor and a stator, the rotor is in the stator, the rotor can reciprocate in the stator, the lower part of the lower hollow piston 8 is integrated with the upper part of the rotor of the hydraulic feedback pump 9, the lower part of the lower pump cylinder 7 is integrated with the upper part of the stator of the hydraulic feedback pump 9, the breathing hole 5-1 is arranged in the outer pipe 6, the breathing joint 5 is connected with the upper part of the outer pipe 6, the breathing hole 5-1 is arranged in the outer pipe 6, an annular channel 6-1 is formed between the outer pipe 6 and the lower pump cylinder 7 and the hydraulic feedback pump 9, the upper part of the annular channel 6-1 is communicated with the breathing hole 5-1, the lower part of the annular channel 6-1 is communicated with the inlet of the hydraulic feedback pump 9, the upper part of the upper hollow piston rod 4 is connected with an upper sucker rod joint 1, the upper sucker rod joint 1 is provided with a liquid outlet groove, the lower part of a rotor is connected with the upper part of a pump upper sucker rod 10 connected on an oil pump, the lower part of an outer pipe 6 is connected with the upper part of a pump upper oil pipe 11 connected on the oil pump, the outer upper part of the utility model is connected with the lower part of an upper oil pipe 2, the upper part of the upper oil pipe 2 is connected with a wellhead, and the upper part of the upper sucker rod joint 1 is connected with the sucker rod to the wellhead.
The pumping rod load relief device mainly comprises an upper pump cylinder 3, an upper hollow piston rod 4, a breathing joint 5, a lower pump cylinder 7 and a lower hollow piston 8.
The structure of the hydraulic feedback pump 9 is the structure (two pump cylinders with different pump diameters, two pistons matched with the pump cylinders, an oil inlet valve and an oil outlet valve) disclosed in the pages 2-10 in the oil well pump 106 published by the oil industry press in 7 month 1994, but is not limited to the structure. The present application of hydraulic feedback pump is to pump oil in thick oil well, and the present utility model is to reduce the pressure and load of oil pipe, sucker rod and oil pump. With the development of technology, technicians designed various hydraulic feedback pumps, such as one of the hydraulic feedback pumps in the Chinese patent application 200510020054.5, "rod-type thick oil pump", and can also be used in the present utility model. A hydraulic feedback pump (with an upper sucker rod joint and a lower sucker rod joint) formed by connecting two uniflow piston assemblies with different pump diameters in series can be used in the utility model.
The active cell of the hydraulic feedback pump 9 is a part which moves synchronously with the sucker rod during oil pumping, and mainly comprises two pistons with different diameters, an oil inlet valve and an oil discharge valve (one piston can be a lower hollow piston 8 on the sucker rod load relief device). The stator of the hydraulic feedback pump 9 refers to a stationary part mounted on the oil pipe, mainly two pump cylinders with different pump diameters and other connectors (one of the pump cylinders can be the lower pump cylinder 7 on the pumping rod unloading device). Some parts of an oil inlet valve and an oil outlet valve of a hydraulic feedback pump are not fully arranged on a rotor, a part of the parts are arranged on the rotor, a part of the parts are arranged on a stator, and the oil outlet valve and the oil inlet valve are generally mechanical valves (opened or closed according to the movement direction of a sucker rod).
When the lower hollow piston 8 of the pumping rod load reducing device is combined with the hydraulic feedback pump 9, the lower hollow piston 8 can be a part on the hydraulic feedback pump 9, and a part on the hydraulic feedback pump 9 can also be the lower hollow piston 8, namely: the sucker rod load relief device and the hydraulic feedback pump 9 can share the lower hollow piston 8; when the lower pump cylinder 7 of the sucker rod load reducing device is combined with the hydraulic feedback pump 9, the lower pump cylinder 7 can be a part on the hydraulic feedback pump 9, and a part on the hydraulic feedback pump 9 can also be the lower pump cylinder 7, namely: the sucker rod load relief device and the hydraulic feedback pump 9 can share the lower pump cylinder 7.
In the utility model, the sucker rod load relief device and the hydraulic feedback pump 9 share the lower pump cylinder 7 and the lower hollow piston 8 simultaneously, so that the whole device is provided with three pump cylinders and three pistons; if only the lower pump cylinder 7 is shared and the lower hollow piston 8 is not shared, the whole device is provided with three pump cylinders and four pistons; if the lower hollow piston 8 is not shared and the lower pump cylinder 7 is not shared, the whole device is provided with four pump cylinders and four pistons.
The utility model refers to the combination of the lower part of the lower hollow piston 8 and the upper part of the rotor of the hydraulic feedback pump 9 into a whole, wherein the combination is divided into two cases, and when the sucker rod load reducing device and the hydraulic feedback pump 9 share the lower hollow piston 8, the sucker rod load reducing device and the hydraulic feedback pump 9 are integrated into a whole, and the utility model is three pistons; in another case, when the sucker rod load relief device and the hydraulic feedback pump 9 do not share the lower hollow piston 8, the utility model has four pistons, and the lower hollow piston 8 and the upper piston of the hydraulic feedback pump 9 are connected into a whole through components.
The utility model refers to the combination of the lower part of the lower pump cylinder 7 and the upper part of the stator of the hydraulic feedback pump 9 into a whole, which is divided into two cases, wherein when the sucker rod load reducing device and the hydraulic feedback pump 9 share the lower pump cylinder 7, the sucker rod load reducing device and the hydraulic feedback pump 9 are integrated; in another case, when the sucker rod load relief device and the hydraulic feedback pump 9 do not share the lower pump cylinder 7, the utility model has four pump cylinders, and the lower pump cylinder 7 is connected with the upper pump cylinder of the hydraulic feedback pump 9 into a whole.
The utility model organically combines the sucker rod load relief device and the hydraulic feedback pump, is arranged on an oil pipe and a sucker rod between a wellhead and an oil well pump, well fluid is pumped to the utility model by the sucker rod pump, and then is pumped to the ground by the utility model in a relay load relief way.
The hydraulic feedback pump 9 divides the pressure in the oil pipe between the wellhead and the oil pump into two pressure systems, so that the pressure and the load of the liquid column borne by the oil pipe, the sucker rod and the oil pump which are arranged below the hydraulic feedback pump 9 are reduced, and the thrust of well liquid to the bottom of the sucker rod column is reduced during the downstroke, thereby reducing the stroke loss caused by the elastic expansion and contraction of the sucker rod and the oil pipe below the hydraulic feedback pump, reducing the gap leakage between the piston and the pump barrel of the oil pump, improving the displacement, the pump efficiency and the system efficiency, reducing the problems of disconnection and eccentric wear caused by the unstable bending of the sucker rod below the hydraulic feedback pump, prolonging the service life of the oil pipe, the sucker rod and the oil pump below the hydraulic feedback pump, and reducing the deep pumping cost.
After the outer pipe 6 is installed, the breathing hole 5-1 is communicated with the inlet of the hydraulic feedback pump 9, and gap leakage between the upper hollow piston rod 4 and the upper pump cylinder 3 and gap leakage between the lower hollow piston 8 and the lower pump cylinder 7 flows back to the inlet of the hydraulic feedback pump 9 through the breathing hole 5-1 and the annular channel 6-1, so that displacement loss caused by the fact that the gap leakage of the pumping rod load reducing device flows back to the sleeve is avoided, and oil well displacement, pump efficiency and system efficiency can be improved; the pressure of the inlet of the hydraulic feedback pump 9 is close to zero, the pressure of the upper end face of the lower hollow piston 6 communicated with the inlet of the hydraulic feedback pump 9 is also close to zero, the pressure of the upper end face of the upper hollow piston rod 4 and the pressure of the lower end face of the lower hollow piston 6 are the liquid column pressure in the oil pipe above the installation position of the upper hollow piston rod, the lower hollow piston 6 is subjected to the upward thrust of well liquid, so that the load of a sucker rod and the load of a pumping unit above the installation position of the lower hollow piston 6 can be reduced, the service life of the pumping unit is prolonged, the efficiency of the pumping unit is improved, the influence of the sleeve pressure on the load reducing effect of the sucker rod load reducing pumping unit is eliminated, and the load reducing effect is good, and the constant load reducing effect is realized on a sleeve liquid level and a pumping well with high sleeve pressure. When the sleeve is doped with thin oil and the viscosity is reduced, the doped thin oil fills the sleeve to raise the pressure of the sleeve, but the doped thin oil does not enter the annular channel 6-1, so that the load reducing effect of the load reducing device is not affected, and the thick oil exploitation can be carried out by matching the sleeve with the sleeve doped thin oil and viscosity reducing process.
The upper oil pipe 2, the pump-up sucker rod 10 and the pump-up oil pipe 11 are matched on site, and the rest parts are produced and assembled in a production factory (if the site is provided with the oil pipe with the inner diameter larger than the outer diameter of the lower pump cylinder 7 and the outer diameter of the hydraulic feedback pump, the outer pipe 6 can also be matched on site).
The matching sealing of the piston (rod) and the pump cylinder means meeting the requirements specified in the GB/T18607 standard. The pump diameter refers to the inner diameter of the pump barrel of the oil pump.
Claims (1)
1. The utility model provides a reciprocating type has pole pump relay relief deep-drawing device, including last pump barrel (3), go up hollow piston rod (4), breathe connect (5), lower pump barrel (7), hollow piston (8) down, hydraulic feedback pump (9), the external diameter of going up hollow piston rod (4) is less than the external diameter of hollow piston (8) down, go up pump barrel (3) and install on breathing connect (5), the lower part of going up hollow piston rod (4) is connected with the upper portion of hollow piston (8) down, go up hollow piston rod (4), the hole of hollow piston (8) down is the fluid-discharge channel, go up pump barrel (3), breathe connect (5) suit on last hollow piston rod (4), go up hollow piston rod (4) and last pump barrel (3) cooperation seal, lower hollow piston (8) are put into down in pump barrel (7), lower hollow piston (8) and lower pump barrel (7) cooperation seal, breathe connect (5) and install the upper portion of pump barrel (7), the lateral wall of breathing connect (5-1) have breathing hole (5-1), the rotor (7) and the stator (9) are in the stator, the stator is that the stator is connected with the rotor (9) of the pump. The lower part of the lower hollow piston (8) is integrated with the upper part of a rotor of the hydraulic feedback pump (9), the lower part of the lower pump cylinder (7) is integrated with the upper part of a stator of the hydraulic feedback pump (9), the lower hollow piston further comprises an outer pipe (6), the lower pump cylinder (7) and the hydraulic feedback pump (9) are placed in the outer pipe (6), the breathing joint (5) is connected to the upper part of the outer pipe (6), the breathing hole (5-1) is formed in the outer pipe (6), an annular channel (6-1) is formed between the outer pipe (6) and the lower pump cylinder (7) and the hydraulic feedback pump (9), the upper part of the annular channel (6-1) is communicated with the breathing hole (5-1), and the lower part of the annular channel (6-1) is communicated with an inlet of the hydraulic feedback pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320083309.6U CN220204099U (en) | 2023-01-29 | 2023-01-29 | Reciprocating type sucker rod pump relay load shedding deep drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320083309.6U CN220204099U (en) | 2023-01-29 | 2023-01-29 | Reciprocating type sucker rod pump relay load shedding deep drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220204099U true CN220204099U (en) | 2023-12-19 |
Family
ID=89150088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320083309.6U Active CN220204099U (en) | 2023-01-29 | 2023-01-29 | Reciprocating type sucker rod pump relay load shedding deep drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220204099U (en) |
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2023
- 2023-01-29 CN CN202320083309.6U patent/CN220204099U/en active Active
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