CN104563972A - Small power deep well pumping unit - Google Patents
Small power deep well pumping unit Download PDFInfo
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- CN104563972A CN104563972A CN201510014033.6A CN201510014033A CN104563972A CN 104563972 A CN104563972 A CN 104563972A CN 201510014033 A CN201510014033 A CN 201510014033A CN 104563972 A CN104563972 A CN 104563972A
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- pump
- circulating fluid
- oil
- vane pump
- pumping unit
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- 238000005086 pumping Methods 0.000 title claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000003129 oil well Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 25
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/12—Combinations of two or more pumps the pumps being of different types at least one pump being of the rotary-piston positive-displacement type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydraulic Motors (AREA)
Abstract
本发明公开了一种小功率深井抽油机，包括涡轮泵与叶片泵，所述涡轮泵的循环液出口通过管道与叶片泵的进口相连，所述叶片泵的出口通过管道与涡轮泵的循环液进口相连，所述涡轮泵与叶片泵之间形成密闭的液路循环通道且填充有循环液，所述叶片泵的转轴连接在驱动电机的输出轴上，所述涡轮泵的转轴连接在螺杆泵的转动轴上，所述螺杆泵的下端设置有抽油口，螺杆泵的上端连接出油管道。其显著效果是：无换向磨损；可小功率抽油；采用液压提升油井液柱负荷，无游梁抽油杆柱的冲击和振动载荷，具有一定节能效果；可通过改变螺杆泵的长度来增压，不受增压面积比的限制，通过液压增压提升扬程，实现高扬程深井抽油。
The invention discloses a low-power deep well pumping unit, which comprises a turbine pump and a vane pump. The outlet of the circulating fluid of the turbine pump is connected to the inlet of the vane pump through a pipeline, and the outlet of the vane pump is circulated with the turbine pump through a pipeline. The liquid inlet is connected, and a closed liquid circuit circulation channel is formed between the turbo pump and the vane pump and filled with circulating fluid. The rotating shaft of the vane pump is connected to the output shaft of the driving motor, and the rotating shaft of the turbo pump is connected to the screw On the rotating shaft of the pump, the lower end of the screw pump is provided with an oil suction port, and the upper end of the screw pump is connected to an oil outlet pipeline. Its remarkable effects are: no reversing wear; low-power pumping; using hydraulic pressure to lift the load of the oil well fluid column, without the impact and vibration load of the sucker rod string, which has a certain energy-saving effect; it can be adjusted by changing the length of the screw pump. Boosting is not limited by the ratio of the boosting area, and the head is increased through hydraulic boosting to realize high-lift deep well pumping.
Description
技术领域technical field
本发明涉及到石油开采用机械设备技术领域，具体地说，是一种小功率深井抽油机。The invention relates to the technical field of mechanical equipment for petroleum exploitation, in particular to a low-power deep well pumping unit.
背景技术Background technique
目前，石油开采用泵，大体上分成有杆泵和无杆泵两种，因为无杆泵投入较大且使用范围受到很大的限制，因此现在绝大多数的油井采用有杆泵进行开采。At present, pumps used in petroleum development are generally divided into two types: rod pumps and rodless pumps. Because rodless pumps are heavily invested and the scope of use is greatly limited, most oil wells now use rod pumps for mining.
现有技术中，有杆泵多为往复式柱塞泵，通过换向阀将电机的旋转运动转换成液压缸的上下往复运动，从而通过柱塞泵将油抽出完成对油井中石油的开采。然而，液压缸的增压受面积比限制，在油井中无法做到很大，故其扬程较低，无法应用于深井抽油；换向阀频繁工作环向，磨损严重，加快了泵的损坏速度，缩短了泵的使用寿命而且影响生产效率；柱塞泵形成受到限制，工作期短(2～4月)不利于提高采油量。In the prior art, most rod pumps are reciprocating plunger pumps. The rotary motion of the motor is converted into the up and down reciprocating motion of the hydraulic cylinder through the reversing valve, so that the oil is pumped out through the plunger pump to complete the oil extraction in the oil well. However, the pressurization of the hydraulic cylinder is limited by the area ratio, and it cannot be made large in oil wells, so its head is low and cannot be applied to deep well pumping; the reversing valve frequently works in circular directions, and the wear is serious, which accelerates the damage of the pump The speed shortens the service life of the pump and affects the production efficiency; the formation of the plunger pump is limited, and the short working period (2-4 months) is not conducive to increasing oil production.
发明内容Contents of the invention
针对现有技术的不足，本发明的目的是提供一种小功率深井抽油机，该抽油机通过液压减速机构和低速抽油增压机构实现小功率采油，无换向磨损，能够通过液压增压实现高扬程抽油，所需驱动电机功率小。Aiming at the deficiencies in the prior art, the object of the present invention is to provide a low-power deep well pumping unit, which realizes low-power oil production through a hydraulic deceleration mechanism and a low-speed pumping booster mechanism, without reversing wear, and can be hydraulically Supercharging realizes high-lift oil pumping, and the power required for driving the motor is small.
为达到上述目的，本发明表述一种小功率深井抽油机，其关键在于：包括涡轮泵与叶片泵，所述涡轮泵的循环液出口通过管道与叶片泵的进口相连，所述叶片泵的出口通过管道与涡轮泵的循环液进口相连，所述涡轮泵与叶片泵之间形成密闭的液路循环通道且填充有循环液，所述叶片泵的转轴连接在驱动电机的输出轴上，所述涡轮泵的转轴连接在螺杆泵的转动轴上，所述螺杆泵的下端设置有抽油口，螺杆泵的上端连接出油管道。In order to achieve the above object, the present invention describes a low-power deep well pumping unit, the key of which is: comprising a turbo pump and a vane pump, the outlet of the circulating fluid of the turbo pump is connected to the inlet of the vane pump through a pipeline, and the outlet of the vane pump The outlet is connected to the circulating fluid inlet of the turbo pump through a pipeline, and a closed liquid circuit circulation channel is formed between the turbo pump and the vane pump and filled with circulating fluid. The rotating shaft of the vane pump is connected to the output shaft of the driving motor, so The rotating shaft of the turbo pump is connected to the rotating shaft of the screw pump, the lower end of the screw pump is provided with an oil suction port, and the upper end of the screw pump is connected to an oil outlet pipeline.
在使用时，将高速驱动电机与涡轮泵安装在一起，通过涡轮泵上设置的循环液回路形成液压减速机构，将驱动电机高速旋转的动能转换为液压减速机构输出转动动能，从而带动低速螺杆泵进行增压抽油。本抽油机与同等额定负荷的现有往复抽油机相比，无换向磨损，使用寿命长，所需电机功率小；采用液压提升油井液柱负荷，无游梁抽油杆柱的冲击和振动载荷，因此减少了振动载荷对离心泵的疲劳伤害，具有一定的节能效果；变频调速方便，容易达到高效节能效果；可通过改变螺杆泵的螺纹杆长度来增压，不受增压面积比影响，增大力矩与螺纹杆长度成正比，便于实现高压抽油，提升扬程；无柱塞泵行程限制，采油量大；通过液压减速机构和低速抽油增压机构实现小功率(5～8KW)采油，适合于3000-5000米深井小排量5-10M2/天油田采油。When in use, the high-speed drive motor and the turbo pump are installed together, and the hydraulic deceleration mechanism is formed through the circulating fluid circuit set on the turbo pump, and the kinetic energy of the high-speed rotation of the drive motor is converted into the hydraulic deceleration mechanism to output rotational kinetic energy, thereby driving the low-speed screw pump. Carry out boost pumping. Compared with the existing reciprocating pumping unit with the same rated load, this pumping unit has no reversing wear, long service life, and low motor power required; hydraulic pressure is used to lift the load of the oil well fluid column, and there is no impact of the beam sucker rod column and vibration load, thus reducing the fatigue damage of the centrifugal pump caused by the vibration load, which has a certain energy-saving effect; the frequency conversion speed regulation is convenient, and it is easy to achieve high-efficiency energy-saving effects; the pressure can be increased by changing the length of the threaded rod of the screw pump, and it is not affected by the pressure increase. Due to the influence of the area ratio, the increased torque is proportional to the length of the threaded rod, which is convenient for high-pressure oil pumping and lift lift; there is no plunger pump stroke limit, and the oil production volume is large; low power (5 ~8KW) oil recovery, suitable for 3000-5000 meters deep well and small displacement 5-10M2/day oil field oil recovery.
进一步的技术方案是，所述驱动电机、叶片泵、涡轮泵以及螺杆泵在竖直方向由下到上依次设置。A further technical proposal is that the drive motor, the vane pump, the turbo pump and the screw pump are arranged vertically in sequence from bottom to top.
通过上述设置，能够减小整个抽油机所占据的空间，使其能够适用于口径更小的油井，能够尽可能增大抽油机的功率，从而提高该油井的出油量。Through the above arrangement, the space occupied by the entire pumping unit can be reduced, so that it can be applied to oil wells with smaller diameters, and the power of the pumping unit can be increased as much as possible, thereby increasing the oil yield of the oil well.
更进一步的，所述涡轮泵包括一设置有腔室的壳体，在所述腔室内装设有涡轮转子，所述循环液出口与循环液进口均开设在所述壳体的底部，其中所述循环液出口与所述腔室的下端相通，所述循环液进口通过壳体内部的循环液通道与所述腔室的上端相通。Furthermore, the turbo pump includes a casing with a chamber, and a turbine rotor is installed in the chamber, and the circulating fluid outlet and the circulating fluid inlet are both opened at the bottom of the casing, wherein the The circulating fluid outlet communicates with the lower end of the chamber, and the circulating fluid inlet communicates with the upper end of the chamber through a circulating fluid channel inside the housing.
采用上述结构，循环液从涡轮泵内腔室的上方向下方流动，能够充分利用循环液的自重提供给涡轮旋转的动力，更能够对螺杆泵提供足够的抽油动力，具有节能效果。With the above structure, the circulating fluid flows from the top to the bottom of the inner chamber of the turbo pump, which can make full use of the self-weight of the circulating fluid to provide the power for the turbine to rotate, and can also provide sufficient pumping power for the screw pump, which has an energy-saving effect.
再进一步的，所述抽油口呈喇叭口状结构，且其敞口端向下。Still further, the oil suction port is in the shape of a bell mouth, and its open end is downward.
敞口端向下设置便于对原油进行抽取，同时便于对油压进行增压，提高抽油的扬程。The open end is set downward to facilitate the extraction of crude oil, and at the same time, it is convenient to pressurize the oil pressure and increase the pumping head.
本发明的显著效果是：本抽油机与同等额定负荷的现有往复抽油机相比，无换向磨损，使用寿命长，所需电机功率小；可通过改变螺杆泵的螺纹杆长度来增压，不受增压面积比影响，增大力矩与螺纹杆长度成正比，便于实现深井抽油，提升扬程；无柱塞泵行程限制，采油量大。The remarkable effect of the present invention is: compared with the existing reciprocating pumping unit with the same rated load, the pumping unit has no commutation wear, long service life, and small required motor power; Boosting is not affected by the ratio of the boosting area, and the increased torque is proportional to the length of the threaded rod, which is convenient for deep well pumping and lift lift; there is no plunger pump stroke limit, and the oil recovery is large.
附图说明Description of drawings
图1是本发明的结构示意图。Fig. 1 is a schematic structural view of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明的具体实施方式以及工作原理作进一步详细说明。The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.
如图1所示，一种小功率深井抽油机，包括涡轮泵4与叶片泵6，所述涡轮泵4的循环液出口通过管道与叶片泵6的进口相连，所述叶片泵6的出口通过管道与涡轮泵4的循环液进口相连，所述涡轮泵4与叶片泵6之间形成密闭的液路循环通道且填充有循环液，所述叶片泵6的转轴向下连接在驱动电机7的输出轴相上，在该驱动电机7上连接有电缆8，所述涡轮泵4的转轴向上连接在螺杆泵2转轴上，所述螺杆泵2的下端设置有抽油口3，所述螺杆泵2的上端连接出油管道1。As shown in Figure 1, a low-power deep well pumping unit includes a turbo pump 4 and a vane pump 6, the outlet of the circulating fluid of the turbo pump 4 is connected to the inlet of the vane pump 6 through a pipeline, and the outlet of the vane pump 6 The pipeline is connected to the circulating fluid inlet of the turbo pump 4, and a closed liquid circuit circulation channel is formed between the turbo pump 4 and the vane pump 6 and filled with circulating fluid. The rotating shaft of the vane pump 6 is connected downward to the drive motor On the output shaft phase of 7, a cable 8 is connected to the drive motor 7, the rotating shaft of the turbo pump 4 is connected upward to the rotating shaft of the screw pump 2, and the lower end of the screw pump 2 is provided with an oil suction port 3, the The upper end of the screw pump 2 is connected with the oil outlet pipeline 1 .
参见附图1，所述涡轮泵4包括一设置有腔室的壳体，在所述腔室内装设有涡轮转子，所述循环液出口与循环液进口均开设在所述壳体的底部，其中所述循环液出口与所述腔室的下端相通，所述循环液进口通过壳体内部的循环液通道5与所述腔室的上端相通。Referring to accompanying drawing 1, described turbine pump 4 comprises a casing that is provided with chamber, and turbine rotor is installed in described chamber, and described circulating fluid outlet and circulating fluid inlet are opened at the bottom of described casing, Wherein the circulating fluid outlet communicates with the lower end of the chamber, and the circulating fluid inlet communicates with the upper end of the chamber through the circulating fluid channel 5 inside the housing.
从图1中可以看出，所述驱动电机7、叶片泵6、涡轮泵4以及螺杆泵2在竖直方向由下到上依次设置。As can be seen from FIG. 1 , the drive motor 7 , the vane pump 6 , the turbo pump 4 and the screw pump 2 are arranged in sequence from bottom to top in the vertical direction.
从图1中还可以看出，所述抽油口3呈喇叭口状结构，且其敞口端向下。It can also be seen from FIG. 1 that the oil suction port 3 is in the shape of a bell mouth, and its open end is downward.
其工作原理为：Its working principle is:
驱动电机7旋转带动叶片泵6转动，使得涡轮泵4中的循环液形成循环流动，进而驱动涡轮泵4转动实现对驱动电机7的减速，同时带动螺杆泵2转动，将原油从抽油口3吸入并进行增压，然后从出油管道1中送出。The driving motor 7 rotates to drive the vane pump 6 to rotate, so that the circulating fluid in the turbo pump 4 forms a circulating flow, and then drives the turbo pump 4 to rotate to realize the deceleration of the driving motor 7. Inhale and pressurize, and then send out from oil outlet pipeline 1.
在抽油过程中，本抽油机无换向磨损，所需电机功率小；可通过改变螺杆泵2的螺纹杆长度来增压，不受增压面积比影响，增大力矩与螺纹杆长度成正比，便于实现深井抽油，提升扬程；无柱塞泵行程限制，采油量大；通过液压减速机构和低速抽油增压机构实现小功率(5～8KW)采油，适合于3000-5000米深井小排量5-10M2/天油田采油。During the oil pumping process, the pumping unit has no reversing wear, and the required motor power is small; the pressure can be increased by changing the length of the threaded rod of the screw pump 2, which is not affected by the ratio of the pressurized area, and the torque and the length of the threaded rod can be increased Proportional, easy to achieve deep well pumping and increase the head; no plunger pump stroke limit, large oil production; through the hydraulic deceleration mechanism and low-speed pumping booster mechanism to achieve low power (5 ~ 8KW) oil production, suitable for 3000-5000 meters Deep well small displacement 5-10M2/day oil field oil production.
Claims (4)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223331A (en) * | 2018-01-06 | 2018-06-29 | 西南石油大学 | A kind of rod pumping pump and ground driving screw pump combined type oil pumping system |
| CN108223331B (en) * | 2018-01-06 | 2023-12-26 | 西南石油大学 | Combined oil pumping system of rod oil pump and ground driving screw pump |
| CN110714906A (en) * | 2019-10-28 | 2020-01-21 | 西南石油大学 | Screw rod drive is oil jack in pit |
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|---|---|
| CN104563972B (en) | 2017-11-14 |
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