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Ground efficiency estimation method based on nominal power utilization ratio and power transmission ratio

A technology of nominal power and power transmission, which is applied in the field of ground efficiency calculation based on nominal power utilization ratio and power transmission ratio, can solve the problems that cannot fully reflect the production status of oil wells, and the no-load power of motors is not easy to obtain, so as to reduce the large horsepower. The occurrence rate of the "car" phenomenon, good precision, and the effect of improving efficiency

Active Publication Date: 2020-03-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

In Zheng Haijin, according to the energy loss and transfer under the ideal conditions of each motion pair, the ground loss power model was established, and its coefficient k 1 、k 2 It cannot fully reflect the actual production status of the oil well, and parameters such as motor no-load power are not easy to obtain

Method used

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  • Ground efficiency estimation method based on nominal power utilization ratio and power transmission ratio
  • Ground efficiency estimation method based on nominal power utilization ratio and power transmission ratio
  • Ground efficiency estimation method based on nominal power utilization ratio and power transmission ratio

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Embodiment Construction

[0039] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0040] like figure 1 as shown, figure 1 It is a flow chart of the ground efficiency estimation method based on nominal power utilization ratio and power transfer ratio of the present invention.

[0041] Step 101: Obtain the test data of the pumping unit well in the block.

[0042] Collect a large amount of historical test data of pumping unit oil wells in the block or unit (certain number of wells, well scale), mainly including: dynamometer data (load, displacement) actually detected by the oil well, stroke, stroke times, input power, Motor model, motor rated power, measured ground efficiency, etc.

[0043] Step 102: Establish a ground efficiency estimation model based on nominal power utilization ratio and power transmission ratio.

[0044] In the...

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Abstract

The invention provides a ground efficiency estimation method based on a nominal power utilization ratio and a power transmission ratio. The ground efficiency estimation method based on the nominal power utilization ratio and the power transmission ratio includes the following steps of 1, obtaining certain-scale rod-pumped well measured data in a block or unit; 2, introducing the nominal power utilization ratio and the power transmission ratio to establish a new ground efficiency calculation model; and 3, solving model coefficients A, B and C based on a least square method algorithm. The groundefficiency estimation method based on the nominal power utilization ratio and the power transmission ratio can realize real-time and accurate calculation of oil well ground efficiency according to alarge number of history test data and actual working conditions of an oil well, improves the compliance rate of a motor selection optimization scheme, improves the efficiency of a rod-pumped well system and achieves the purposes of saving energy and reducing consumption.

Description

technical field [0001] The invention relates to the technical field of oil pumping well production, in particular to a ground efficiency estimation method based on nominal power utilization ratio and power transmission ratio. Background technique [0002] In the production process of pumping units, there is a phenomenon of "big horses and small carts". The load utilization rate is low, the power consumption is increased, the ground efficiency is low, and the cost is increased due to unreasonable motor matching; the suspension point movement of the pumping unit is periodic The changing sudden load causes the rated load of the motor to differ greatly from the actual load sometimes, and the rated load is greater or smaller than the actual load, which will cause additional loss to the motor, which seriously affects the efficiency of the pumping unit system. In the optimal design of pumping wells, the ground efficiency is reasonably calculated, and the relationship between the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/009G06F17/11
CPCG06F17/11
Inventor 仲如冰姜东肖姝智勤功于雪林杭发琴金鑫岳振玉费秀英闫文文
Owner CHINA PETROLEUM & CHEM CORP
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