CN218716698U - Load-reducing oil pumping device for hollow sucker rod - Google Patents
Load-reducing oil pumping device for hollow sucker rod Download PDFInfo
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- CN218716698U CN218716698U CN202222983607.9U CN202222983607U CN218716698U CN 218716698 U CN218716698 U CN 218716698U CN 202222983607 U CN202222983607 U CN 202222983607U CN 218716698 U CN218716698 U CN 218716698U
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Abstract
The load-reducing pumping unit for hollow sucker rod has upper pump barrel with pump diameter smaller than that of lower pump barrel, upper plunger inside the upper pump barrel and sealed to the upper pump barrel, lower plunger inside the lower pump barrel and sealed to the lower pump barrel, upper pump barrel, communicating joint and lower pump barrel connected successively, upper plunger with lower part connected to the upper part of the lower plunger and sealed to the upper part of the upper pump barrel, and communicating pipe with the lower part of the upper pump barrel and the upper part of the lower pump barrel and with upper hollow rod joint and lower hollow rod joint.
Description
Technical Field
The utility model relates to an oil pumping unit that oil field was used is a deloading oil pumping unit who uses with hollow sucker rod cooperation, specifically is a hollow sucker rod deloading oil pumping unit.
Background
In oil field production, some oil wells have deep oil layers and poor energy, the liquid level in a shaft is deep from a well head, and oil can be pumped by pumping the oil well deep under an oil well pump (the condition is called deep pumping on site). When the oil pump is deep, the load borne by the oil pumping unit and the oil pumping rod is increased.
In order to reduce the load of the pumping unit and the upper sucker rod, technical personnel develop a device for reducing the load of the sucker rod, such as Chinese patent: 2012202957131 sucker rod deloading device, which is a technical solution to solve the above problems. The outer diameter of the upper plunger is smaller than that of the lower plunger, the pressure of the upper part of the lower plunger is lower than that of the lower part of the lower plunger due to the balance hole, and an upward hydraulic pressure is arranged at the lower part of the lower plunger under the action of area difference and pressure difference, so that the load of the sucker rod connected to the oil outlet joint is reduced, the load of the oil pumping unit is also reduced, and the depth of the lower pump can be increased or the discharge capacity can be improved. As another example, the Chinese patent: 2021210389276 "a hydraulic load-reducing pumping unit" can also achieve the effects of the above patent. There are also chinese patents: 2020215044925 "a hydraulic load-reducing pumping unit" can also achieve the effects of the above patent.
In the three patents, well liquid pumped by the oil pump at the lower part of the pump flows out through the insides of the two plungers on the pump, the pumped well liquid occupies a central channel, equipment can not be lowered into the central channel or the liquid can not be pumped into the central channel by matching with a hollow sucker rod, and thick oil exploitation can not be carried out by matching with a pump heating technology.
Disclosure of Invention
The utility model aims at designing a hollow sucker rod deloading oil pumping unit, reducing the load of sucker rod and beam-pumping unit to can cooperate hollow sucker rod to go into equipment or squeeze into liquid under the central channel.
The purpose of the utility model is realized like this: the upper pump barrel, the communication joint and the lower pump barrel are sequentially connected, the lower part of the upper plunger is connected with the upper part of the lower plunger, the joint keeps sealed, the communication joint is provided with a lateral communication hole, the lateral communication hole is communicated with the lower part of the upper pump barrel and the upper part of the lower pump barrel, the communication pipe also comprises an upper hollow rod joint, a communication pipe and a lower hollow rod joint, the communication pipe is positioned in the upper plunger and the lower plunger, the upper part of the communication pipe is provided with an upper hollow rod joint, the lower part of the communication pipe is provided with a lower hollow rod joint, a discharge passage is arranged between the lower part of the upper hollow rod joint and the upper part of the upper plunger, an inlet hollow passage is arranged between the lower part of the lower hollow rod joint and the lower part of the lower plunger, and well liquid flows from the outer part of the lower hollow rod joint to the outer part of the upper plunger and the lower plunger through the annular space, and then flows out through the outer part of the upper hollow rod joint and the lower plunger.
The discharge channel is arranged in the middle or the lower part of the upper hollow rod joint, and the inlet channel is arranged in the upper or the middle part of the lower hollow rod joint.
The lower thread of the upper hollow rod joint is connected with the upper part of the upper plunger, the joint is positioned below the discharge channel, the lower part of the lower plunger is connected with the upper part of the lower hollow rod joint, the joint is positioned above the inlet channel, the upper part of the communicating pipe is arranged in the upper hollow rod joint, the mounting part is positioned above the discharge channel, the mounting part keeps sealed, the lower part of the communicating pipe is arranged in the lower hollow rod joint, the mounting section keeps sealed, and the mounting section is positioned below the inlet channel.
The upper part of the communicating pipe is connected with the middle thread of the upper hollow rod joint, the joint is positioned above the discharge channel, and the joint keeps sealed.
The upper thread of the communicating pipe is connected with the upper hollow rod joint, the joint keeps sealed, the lower thread of the communicating pipe is connected with the lower hollow rod joint, and the joint keeps sealed.
The upper part of the lower hollow rod joint is connected with the lower part of the lower plunger, and the connection part is positioned above the inlet channel.
The utility model has the advantages that: go up hollow rod and connect, closed tube, hollow rod connects down and has the passageway that link up, goes up hollow rod and connects the upper portion and connect hollow sucker rod, and the sub-unit connection hollow sucker rod that hollow rod connects down makes it the utility model discloses an inside can pass through the cable, goes down to the cable the utility model discloses below, also can squeeze into the fluid of glutinous or paraffin removal the utility model discloses below, to viscous crude oil or high wax crude oil viscosity reduction, improve the mobility of crude oil, prevent to pump the passageway and block up. The utility model discloses can produce ascending thrust in the installation department of tubular column to can reduce the load of sucker rod and beam-pumping unit, increase the pump-down degree of depth or improve the discharge capacity.
Drawings
Fig. 1 is an assembly view of a first embodiment of the invention.
Fig. 2 is an assembly view of a second embodiment of the invention.
Fig. 3 is an assembly view of a third embodiment of the present invention.
Detailed Description
A first embodiment of the present invention will be described with reference to fig. 1.
As shown in fig. 1, the present embodiment includes an upper hollow rod joint 1, an upper pump barrel 2, an upper plunger 3, a communication joint 4, a communication pipe 5, a lower pump barrel 6, a lower plunger 7, and a lower hollow rod joint 8, wherein the pump diameter of the upper pump barrel 2 is smaller than that of the lower pump barrel 6, the upper plunger 3 is arranged in the upper pump barrel 2, the upper plunger 3 is in fit sealing with the upper pump barrel 2, the lower plunger 7 is arranged in the lower pump barrel 6, the lower plunger 7 is in fit sealing with the lower pump barrel 6, the upper pump barrel 2, the communication joint 4, and the lower pump barrel 6 are connected in sequence, the lower part of the upper plunger 3 is connected with the upper part of the lower plunger 7, the connection part is kept sealed, the lateral communication hole 4-1 is arranged on the joint 4, the lateral communication hole 4-1 is communicated with the lower part of the upper pump barrel 2 and the upper part of the lower pump barrel 6, the upper hollow rod joint 1 is provided with a discharge channel 1-1, the discharge channel 1-1 is arranged between the middle thread and the lower thread of the upper hollow rod joint 1, the upper part of the communicating pipe 5 is connected with the middle thread of the upper hollow rod joint 1, the connection part is kept sealed, the upper part of the lower hollow rod joint 8 is connected with the lower part of the lower plunger 7, the lower hollow rod joint 8 is provided with an inlet channel 8-1 and an insertion hole 8-2, the inlet channel 8-1 is positioned above the insertion hole 8-2, the communicating pipe 5 is inserted into the upper plunger 3 and the lower plunger 7, the lower thread of the upper hollow rod joint 1 is connected with the upper part of the upper plunger 3, the lower part of the communicating pipe 5 is inserted into the insertion hole 8-2, a sealing element 9 is arranged between the lower part of the communicating pipe 5 and the insertion hole 8-2, so that the liquid flow can not flow through the gap between the lower part of the communicating pipe 5 and the insertion hole 8-2, and the well liquid enters the communicating pipe 5 and the upper plunger 3 from the outer part of the lower hollow rod joint 8 through the inlet channel 8-1, the annular space between the lower plungers 7 flows upwards and then flows to the outside of the upper hollow rod joint 1 through the communication groove 1-1.
A second embodiment of the present invention will be described with reference to fig. 2.
As shown in fig. 2, the present embodiment includes an upper hollow rod joint 1, an upper pump barrel 2, an upper plunger 3, a communication joint 4, a communication pipe 5, a lower pump barrel 6, a lower plunger 7, and a lower hollow rod joint 8, wherein the pump diameter of the upper pump barrel 2 is smaller than that of the lower pump barrel 6, the upper plunger 3 is in the upper pump barrel 2, the upper plunger 3 is in fit sealing with the upper pump barrel 2, the lower plunger 7 is in the lower pump barrel 6, the lower plunger 7 is in fit sealing with the lower pump barrel 6, the upper pump barrel 2, the communication joint 4, and the lower pump barrel 6 are connected in sequence, the lower part of the upper plunger 3 is connected with the upper part of the lower plunger 7, the connection part keeps sealing, the joint 4 is provided with a lateral communication hole 4-1, the lateral communication hole 4-1 is communicated with the lower part of the upper pump barrel 2 and the upper part of the lower pump barrel 6, the communication pipe 5 penetrates into the upper plunger 3 and the lower plunger 7, the upper part of the communicating pipe 5 is connected with the lower part of the upper hollow rod joint 1, the connection part is kept sealed, the lower part of the communicating pipe 5 is connected with the upper thread of the lower hollow rod joint 8, the connection part is kept sealed, the lower part of the upper hollow rod joint 1 is provided with a discharge channel 1-1, the discharge channel 1-1 is positioned below the connection part of the upper hollow rod joint 1 and the upper part of the communicating pipe 5, the lower hollow rod joint 8 is provided with an inlet channel 8-1, the inlet channel 8-1 is positioned above the connection part of the lower hollow rod joint 8 and the lower part of the communicating pipe 5, well fluid enters the annular space between the communicating pipe 5 and the upper plunger 3 and the lower plunger 7 from the outside of the lower hollow rod joint 8 through the inlet channel 8-1 and flows upwards, and then flows to the outside of the upper hollow rod joint 1 through the communicating groove 1-1.
The discharge passage 1-1 may be provided at the upper end of the upper plunger 3. The discharge channel 1-1 is arranged on the upper plunger or the upper hollow rod joint 1, and the same using effect is achieved. A water-water gap is formed between the lower end of the upper hollow rod joint 1 and the upper end of the upper plunger 3, so that all parts can be conveniently connected in place, and the gap is not too large, preferably 0-5mm, in order to prevent collision caused by reversing during production.
A third embodiment of the present invention will be described with reference to fig. 3.
As shown in fig. 3, the present embodiment includes an upper hollow rod joint 1, an upper pump barrel 2, an upper plunger 3, a communication joint 4, a communication pipe 5, a lower pump barrel 6, a lower plunger 7, and a lower hollow rod joint 8, wherein the pump diameter of the upper pump barrel 2 is smaller than that of the lower pump barrel 6, the upper plunger 3 is in the upper pump barrel 2, the upper plunger 3 is in fit sealing with the upper pump barrel 2, the lower plunger 7 is in the lower pump barrel 6, the lower plunger 7 is in fit sealing with the lower pump barrel 6, the upper pump barrel 2, the communication joint 4, and the lower pump barrel 6 are connected in sequence, the lower part of the upper plunger 3 is connected with the upper part of the lower plunger 7, the connection part is kept sealed, the lateral communication hole 4-1 is provided on the joint 4, the lateral communicating hole 4-1 is communicated with the lower part of the upper pump barrel 2 and the upper part of the lower pump barrel 6, the communicating pipe 5 penetrates into the upper plunger 3 and the lower plunger 7, the upper part of the communicating pipe 5 is connected with the lower part of the upper hollow rod joint 1, the connection part is kept sealed, a discharge channel 1-1 is arranged between the lower end of the upper hollow rod joint 1 and the upper end of the upper plunger 3 (the discharge channel 1-1 is formed by the interval between the lower end of the upper hollow rod joint 1 and the upper end of the upper plunger 3, the interval between the lower end of the upper hollow rod joint 1 and the upper end of the upper plunger 1 is generally 5-20 mm), the lower part of the communicating pipe 5 is connected with the inside of the lower hollow rod joint 8, the connection part is kept sealed, the upper part of the lower hollow rod joint 8 is connected with the upper part of the lower plunger 7, the lower hollow rod joint 8 is provided with an inlet channel 8-1, the inlet channel 8-1 is positioned above the joint of the lower hollow rod joint 8 and the communicating pipe 5 and below the joint of the lower hollow rod joint 8 and the lower plunger 7, and well fluid enters the annular space between the communicating pipe 5 and the upper plunger 3 and the lower plunger 7 from the outside of the lower hollow rod joint 8 through the inlet channel 8-1 to flow upwards and then flows to the outside of the upper hollow rod joint 1 through the communicating groove 1-1.
In above-mentioned three embodiment, hollow rod joint 1, closed tube 5, hollow rod joint 8 have the passageway that link up down, and hollow sucker rod is connected on the upper portion that hollow rod connects 1, and hollow rod joint 8's sub-unit connection hollow sucker rod makes it down the utility model discloses an inside can pass through the cable, with the cable down extremely the utility model discloses under, also can squeeze into the fluid of glutinous or paraffin removal falling the utility model discloses under. With the cable under in the utility model discloses back is through heating cable under, can increase crude oil temperature, reduces its viscosity, increases its mobility, prevents to pump oil the passageway and blocks up. The fluid that will fall glutinous or paraffin removal is through the utility model discloses inside after the input downwards, also can reduce crude oil viscosity, increase its mobility, prevent to pump the oil passageway and block up.
Upper portion that UNICOM connects 4 with the utility model discloses above oil pipe connects (if the intensity and the rigidity of last pump barrel 2 are enough, just adopt upper portion of last pump barrel 2 with the utility model discloses above oil pipe connects, lower pump barrel 6's lower part with the utility model discloses below oil pipe connects, the utility model discloses the well liquid that the oil-well pump under produced through access channel 8-1, 5 outer walls of communicating pipe and two plungers between annular space, discharge passage 1-1 flow to in the oil pipe on the utility model discloses.
The utility model discloses install on the oil pumping tubular column (between oil-well pump and the well head), the diameter of going up plunger 3 is less than the diameter of lower plunger 7, and the up end of lower plunger 7 bears the installation the utility model discloses the sleeve pipe pressure of department, the up end of going up plunger 3, the lower terminal surface of lower plunger 7 bear the installation the utility model discloses the intraductal pressure of the oil of department, oil pipe pressure are the installation the utility model discloses the liquid column pressure of department to well head section, and install the utility model discloses be zero under the sleeve pipe pressure general condition of department (the utility model discloses mainly used for deep pumping well, the dynamic liquid level of deep pumping well is all lower, and the dynamic liquid level is in the utility model discloses under. Therefore, the utility model discloses can produce ascending thrust in the installation department of tubular column to reduce the load of sucker rod, beam-pumping unit.
The connection or insertion sealing between the upper and lower ends of the communication pipe 5 and the upper and lower hollow rod joints 1 and 8 is not limited to the structural form shown in fig. 1; or the lower end of the communicating pipe 5 and the lower hollow rod joint 8 are sealed by connection, and the upper end of the communicating pipe 5 and the upper hollow rod joint 1 are sealed by insertion; or the upper end of the communicating pipe 5 and the upper hollow rod joint 1 and the lower end of the communicating pipe 5 and the lower hollow rod joint 8 are simultaneously sealed by insertion.
The plunger and the pump barrel are matched and sealed, which means that the requirements specified in the GB/T18607 standard are met. The pump diameter refers to the inner diameter of the pump barrel of the oil well pump.
Claims (6)
1. The utility model provides a hollow sucker rod deloading oil pumping unit, including last pump barrel (2), go up plunger (3), UNICOM connects (4), pump barrel (6) down, lower plunger (7), the pump diameter of going up pump barrel (2) is less than the pump diameter of pump barrel (6) down, it is last in pump barrel (2) to go up plunger (3), it is sealed with last pump barrel (2) cooperation, lower plunger (7) are in pump barrel (6) down, lower plunger (7) and pump barrel (6) cooperation are sealed down, go up pump barrel (2), intercommunication joint (4), pump barrel (6) are connected gradually down, the lower part of going up plunger (3) is connected with the upper portion of lower plunger (7), the junction keeps sealed, UNICOM connects and has side direction through-hole (4-1) on (4), side direction through-hole (4-1) and the lower part of last pump barrel (2), the upper portion of pump barrel (6) down communicate with each other characterized by: the well fluid circulating device is characterized by further comprising an upper hollow rod joint (1), a communicating pipe (5) and a lower hollow rod joint (8), wherein the communicating pipe (5) is located in the upper plunger (3) and the lower plunger (7), the upper portion of the communicating pipe (5) is provided with the upper hollow rod joint (1), the lower portion of the communicating pipe (5) is provided with the lower hollow rod joint (8), a discharge channel (1-1) is arranged between the lower portion of the upper hollow rod joint (1) and the upper portion of the upper plunger (3), an inlet channel (8-1) is arranged between the lower portion of the lower hollow rod joint (8) and the lower portion of the lower plunger (7), well fluid flows from the outer portion of the lower hollow rod joint (8) through the inlet channel (8-1) and an annular space between the communicating pipe (5) and the upper plunger (3) and the lower plunger (7), and then flows to the outer portion of the upper hollow rod joint (1) through the discharge channel (1-1).
2. The load-reducing oil pumping unit of the hollow sucker rod as claimed in claim 1, which is characterized in that: the discharge channel (1-1) is arranged in the middle or the lower part of the upper hollow rod joint (1), and the inlet channel (8-1) is arranged in the upper or the middle part of the lower hollow rod joint (8).
3. The load-reducing oil pumping unit of the hollow sucker rod as claimed in claim 2, which is characterized in that: the lower thread of the upper hollow rod joint (1) is connected with the upper part of the upper plunger (3), the joint is positioned below the discharge channel (1-1), the lower part of the lower plunger (7) is connected with the upper part of the lower hollow rod joint (8), the joint is positioned above the inlet channel (8-1), the upper part of the communicating pipe (5) is arranged in the upper hollow rod joint (1), the mounting part is positioned above the discharge channel (1-1), the mounting part keeps sealed, the lower part of the communicating pipe (5) is arranged in the lower hollow rod joint (8), the mounting section keeps sealed, and the mounting section is positioned below the inlet channel (8-1).
4. The load-reducing oil pumping unit of the hollow sucker rod as claimed in claim 3, which is characterized in that: the upper part of the communicating pipe (5) is connected with the middle thread of the upper hollow rod joint (1), the joint is positioned above the discharge channel (1-1), and the joint keeps sealed.
5. The load-shedding oil pumping device of the hollow sucker rod as claimed in claim 1, which is characterized in that: the upper thread of the communicating pipe (5) is connected with the upper hollow rod joint (1), the joint keeps sealed, the lower thread of the communicating pipe (5) is connected with the lower hollow rod joint (8), and the joint keeps sealed.
6. The load-reducing oil pumping unit of the hollow sucker rod as claimed in claim 5, which is characterized in that: the upper part of the lower hollow rod joint (8) is connected with the lower part of the lower plunger (7), and the connection part is positioned above the inlet channel (8-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222983607.9U CN218716698U (en) | 2022-11-09 | 2022-11-09 | Load-reducing oil pumping device for hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222983607.9U CN218716698U (en) | 2022-11-09 | 2022-11-09 | Load-reducing oil pumping device for hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218716698U true CN218716698U (en) | 2023-03-24 |
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ID=85611874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222983607.9U Active CN218716698U (en) | 2022-11-09 | 2022-11-09 | Load-reducing oil pumping device for hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218716698U (en) |
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2022
- 2022-11-09 CN CN202222983607.9U patent/CN218716698U/en active Active
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