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A Servo Drive System of Beam Pumping Unit Using Intermittent Swing Screen Control Technology

A servo-driven, intermittent technology, applied in wellbore/well components, construction, mining fluids, etc., can solve problems such as easy freezing of wellheads, inconvenient transportation, increased labor intensity of workers, etc., and achieve the effect of improving adaptability and improving pump efficiency

Active Publication Date: 2021-05-14
大庆世佳石油设备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the wells using the intermittent pumping oil production technology have a unified and fixed intermittent pumping system, but the labor intensity of workers is increased, the interval pumping time cannot be accurately controlled, management is difficult, and the working system is difficult to implement. In addition, , the well location is remote and the transportation is inconvenient, the rainy and snowy weather, the downtime in winter is easy to freeze the wellhead and other problems, and the intermittent oil production system cannot be implemented

Method used

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  • A Servo Drive System of Beam Pumping Unit Using Intermittent Swing Screen Control Technology
  • A Servo Drive System of Beam Pumping Unit Using Intermittent Swing Screen Control Technology
  • A Servo Drive System of Beam Pumping Unit Using Intermittent Swing Screen Control Technology

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Embodiment 1

[0023] like figure 1 As shown, the present embodiment includes base 9, beam 3, support 4, main donkey head 1, auxiliary donkey head 2, counterweight donkey head 5, slide seat 10, slide plate 27 and variable stroke drive mechanism, and base 9 is fixedly installed on On the ground, the lower end of the bracket 4 is fixedly installed on the middle part of the base 9, the upper end of the bracket 4 is hinged on the middle part of the beam 3, and the main donkey head 1 and the counterweight donkey head 5 are respectively fixedly installed on one end of the beam 3 , the auxiliary donkey head 2 is fixedly installed on the beam 3, and its position is located on the side where the main donkey head 1 is located. On the top, a guide wheel 8 is provided directly below the auxiliary donkey head 2 and the counterweight donkey head 5 respectively, and a soft rope 6 is respectively connected to the auxiliary donkey head 2 and the counterweight donkey head 5, and a soft rope 6 connected to the...

Embodiment 2

[0036] The difference between this embodiment and Embodiment 1 lies in the variable stroke drive mechanism. The advantage of the variable stroke drive mechanism used in this embodiment is that it can realize the online adjustment of the stroke (that is, no need to stop the machine when adjusting the stroke), so the operation is more convenient and quick, and at the same time , When adjusting the stroke, the stroke changes continuously instead of discretely, so the adjustment accuracy is higher. in particular:

[0037] like Figure 4 As shown, in the present embodiment, the variable stroke driving mechanism includes a power motor, a power motor seat 24, a flywheel 15 and a crank, and the power motor seat 24 is slidably mounted on the support 4, and the side of the support 4 is fixed with a lifting motor 23. The output shaft of the lifting motor 23 is connected with a lead screw 25, the lead screw 25 is connected with the power motor seat 24 through a thread pair, the flywheel ...

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Abstract

The invention belongs to the field of oil field pumping unit equipment, and in particular relates to a beam pumping unit servo drive system applying intermittent swing amplitude screen control technology. A head, a counterweight donkey head, a sliding seat and a variable-stroke drive mechanism, the main donkey head and the counterweight donkey head are respectively fixed and installed at one end of the traveling beam. The invention is used in conjunction with a touch screen to design a variable-stroke drive mechanism with a unique structure to realize the operation mode of intermittent waiting on the ground and underground well and pumping parameters for the whole week. When the well is shut down, make the crank of the pumping unit swing within a small angle range. The swing time is determined according to the output of the oil well, the structure of the pumping unit, the effective stroke and the pump diameter of the special pump. After the swing time reaches the set value , enter the normal oil production process, and continue to swing until the next cycle, so the reciprocating cycle can effectively improve the pump efficiency.

Description

technical field [0001] The invention belongs to the field of oilfield pumping unit equipment, and in particular relates to a servo drive system of a beam pumping unit applying intermittent swing amplitude screen control technology. Background technique [0002] With the continuous exploitation of oil, some oil wells have entered the middle and later stages of exploitation, the formation pressure is continuously decreasing, and the liquid supply capacity is getting weaker and weaker. However, the liquid production rate of pumping unit selection and rod pump design is far greater than the liquid supply capacity of oil wells, resulting in insufficient liquid supply in a large number of oil wells. From the point of view of improving pump efficiency and energy saving, intermittent pumping is an extremely effective way, which overcomes the problem that insufficient fluid supply cannot satisfy the continuous operation of pumping equipment. At the same time, it can effectively exte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00
CPCE21B43/127
Inventor 王强谭少文李全恕张海波
Owner 大庆世佳石油设备股份有限公司