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Screw pump oil production real-time monitoring device

A real-time monitoring, screw pump technology, applied in pump control, mechanical equipment, machine/engine, etc., can solve the problem that screw pump wells are difficult to diagnose accurately, and achieve intuitive test results, low test costs, fast and accurate testing Effect

Inactive Publication Date: 2014-04-16
刘晶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to accurately diagnose certain faults in general screw pump wells simply by one method

Method used

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  • Screw pump oil production real-time monitoring device
  • Screw pump oil production real-time monitoring device

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Experimental program
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Effect test

Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing:

[0012] The sensor installed on the polished rod collects oil pressure, casing pressure, voltage, current, speed and torque signals, and converts them into weak voltage signals. The sensors all use bridge-type resistance strain gauge sensors, and the resistance values ​​of the four resistors are equal to the working resistance. When working, the two pieces are under tension and pressure, which increases the sensitivity of the bridge to 4 times that of a single piece. Then, the preamplifier circuit properly amplifies, filters, and transforms the weak voltage signal collected by the sensor into a digital signal for transmission. microcontroller. These digital signals are processed by the single-chip microcomputer and then sent to the host computer for display, storage or printing. The screw pump 1 mentioned in the embodiment here can be a single-screw pump, a twin-screw pump ...

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Abstract

The invention discloses a screw pump oil production real-time monitoring device which is formed by electrically connecting a screw-pump oil production pump 1, a sensor 2, a signal processing circuit 3, a parameter setting circuit 4, a singlechip 5, a control circuit 6, a display 7, an upper computer 8, a data storage 9 and a printing output circuit 10. The screw pump oil production real-time monitoring device overcomes the defects of common single diagnostic methods such as a current method, a pressure keep-down method and a torque method, comprehensively monitors and diagnoses important parameters of the working condition of a screw pump, such as an oil pressure, a casing pressure, a voltage, a current and a torque, provides an effective means for scientifically and evaluating performance of the screw pump in time, and has the advantages of rapidness and accuracy for testing, visuality for displaying a test result, low testing cost and the like.

Description

technical field [0001] The invention belongs to the field of automatic control, and in particular relates to a real-time monitoring device for screw pump oil production used in the oil production industry. Background technique [0002] Since the invention of the screw pump in 1930, the technology of the screw pump has been continuously improved and perfected, especially the development of synthetic rubber technology and bonding technology, so that the screw pump has been widely used in oil exploration. Although the history is not long, it has already shown its superiority. It has the characteristics of small size, light weight, convenient maintenance, high system efficiency, low energy consumption and low initial investment, especially suitable for high sand content and heavy oil wells. After the polymer is injected, the viscosity of the crude oil increases, and the screw pump shows its superiority even more. Due to the complexity of the structure, material and processing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C14/28
Inventor 刘晶
Owner 刘晶
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