Analysis and experimental study of oil well indicator diagram based on electric parameter method

Yin, Xiaoju; Du, Zhiliang; Wang, Yuxin; Lu, Shiyu; Li, Yunxiang; Zhao, Tingting

doi:10.1016/j.egyr.2022.02.013

Cited by 4 publications

(2 citation statements)

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“…From Table 2 and Figure 17 , it can be seen that under the same displacement measurement conditions, the average relative error of the polished rod load measured by the soft sensor method and the dynamometer method is 3.95%. Yin’s model with crank angle as input has an error rate of 10% [ 14 ]. Lu’s model for solving indicator diagram based on FOA-BP neural network optimization has an average relative error of 4.82% [ 15 ].…”

Section: Field Test Of Soft Sensing For the Indicator Diagram Of The ...mentioning

confidence: 99%

“…In this study, firstly, the mathematical models of displacement and torque factor of the horsehead suspension point of the pumping unit have been established based on the easily measured beam inclination angle. Secondly, by analyzing the motion law and the energy flow mechanism of the beam pumping unit system [12][13][14][15][16], the correlation model of the input electrical parameters of the motor, the parameters of the four-bar linkage mechanism of the pumping unit, and the pumping unit suspension point load has been established. The real-time collected beam inclination angle and input electrical parameters of the motor have been substituted into the above model, and the polished rod displacement and load value have been calculated.…”

Section: Introductionmentioning

confidence: 99%

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Research on the Soft-Sensing Method of Indicator Diagram of Beam Pumping Unit

Zhao,

Wang,

Liu

et al. 2024

Sensors

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An accurate calculation of the indicator diagram of a pumping unit is the key factor in analyzing the performance of an oilfield production and operation and in preparing and optimizing an oilfield development plan. Aiming at the problems of the poor stability of the conventional load-displacement sensor method and the wave equation method, owing to the influence of an alternating load on the force sensor and the difficulty in measuring the crank angle using the electrical parameter method, a new soft sensing method employing the input electrical parameters of the motor and the beam inclination has been proposed to obtain the indicator diagram. At first, this method is established based on the beam angle of the pumping unit, which is easily measured using the suspension point displacement mathematics calculation model and the torque factor. Subsequently, the electric motor input parameters, the parameters of the four-bar linkage, and the relationship between the polished rod load have been established. Finally, the motor and the beam angle of the measured electrical parameters have been substituted into the calculation of the suspension point displacement and load value and pull in accordance with the guidelines to eliminate the singularity mutation values. After processing the measured data through a Butterworth filter, the indicator diagram is obtained. The results of the engineering experiment and application show that the average relative error of the method is less than 3.95%, and the maximum relative error remains within 2% for 6 months, which verifies the stability of the soft sensing method.

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Section: Field Test Of Soft Sensing For the Indicator Diagram Of The ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on the Soft-Sensing Method of Indicator Diagram of Beam Pumping Unit

Zhao,

Wang,

Liu

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

Intelligent diagnosis method of torque-angle dynamometer cards for beam pumping units based on transfer learning

Huang,

Feng

et al. 2024

Geoenergy Science and Engineering

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Effect of liquid level monitor gas injection point size on information source amplitude-frequency characteristics

Liu,

Quan,

et al. 2024

Sci Rep

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In order to analyse the effect of the injection point size of the CBM (Coalbed Methane) well level monitor on the amplitude and frequency of pressure pulsations in the wellhead manifold, numerical simulations and experiments were carried out to investigate the effect of different injection point sizes on the amplitude and frequency of pressure pulsations downstream of the sudden expansion structure. Using compressed air as the fluid and the size of the injection point as the variable, the amplitude and frequency of pressure pulsations at different locations downstream of the sudden expansion structure were tested. The results show that the pressure pulsation amplitude is affected by the size of the injection point, and the larger the injection point is, the larger the pressure pulsation amplitude is; the size of the injection point has less influence on the pressure pulsation frequency downstream of the protruding and expanding structure, and the pressure pulsation frequency at 0.5 m and 1 m downstream of the protruding and expanding structure is in the vicinity of 76 Hz. Therefore, the echo signal processing should be filtered around this frequency to obtain accurate liquid level echo signals, so as to improve the accuracy of liquid level monitoring and realise the efficient development of coalbed methane wells.

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Analysis and experimental study of oil well indicator diagram based on electric parameter method

Cited by 4 publications

References 0 publications

Research on the Soft-Sensing Method of Indicator Diagram of Beam Pumping Unit

Research on the Soft-Sensing Method of Indicator Diagram of Beam Pumping Unit

Intelligent diagnosis method of torque-angle dynamometer cards for beam pumping units based on transfer learning

Effect of liquid level monitor gas injection point size on information source amplitude-frequency characteristics

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