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Well condition change identification method based on pumping unit electrical parameters

An identification method and technology of electrical parameters, applied in construction and other directions, can solve problems such as the inability to easily, accurately and effectively identify changes in well conditions, and achieve the effects of high well condition identification efficiency, easy software implementation, and low investment.

Active Publication Date: 2019-09-20
吉林石油集团有限责任公司通信公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] For this reason, the embodiment of the present invention provides a method for identifying changes in well conditions based on the electrical parameters of the pumping unit to solve the problem of not being able to easily, accurately and effectively identify changes in well conditions in the prior art due to the deficiencies of the prior art

Method used

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  • Well condition change identification method based on pumping unit electrical parameters
  • Well condition change identification method based on pumping unit electrical parameters
  • Well condition change identification method based on pumping unit electrical parameters

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Experimental program
Comparison scheme
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Embodiment 1

[0028] Embodiment 1: A method for identifying changes in well conditions based on pumping motor electrical parameters, such as figure 1 As shown, firstly, an online electrical parameter acquisition device is installed on the pumping unit site. The acquisition device is used to continuously collect the three-phase current, voltage and active power of the pumping unit, and transmit the collected data to the server in real time. The acquisition device All devices that can collect the three-phase current, voltage and active power of the pumping unit can be selected for use. Considering the accuracy of the collected values, in this embodiment, the continuous collection points of the collection device are 600 points. The time interval of collection is not greater than 120ms, and the collection equipment should meet the relevant requirements of 4.5 electrical parameter test in "Oilfield Production System Energy Consumption Test and Calculation Method" (SY / T5264-2012) to ensure the acc...

experiment example 2

[0054] Experimental example 2: such as figure 2 As shown, the figure is the curve of active power in direction A of normal well conditions, refer to Figure 3 to Figure 6 As shown, the A-phase active power curves of the same pumping unit at different times are selected, and four A-phase active power curves are randomly selected in this embodiment. In order to facilitate the comparison of various well conditions, the calculation process is shown in Table 1 and Table 2.

[0055] It can be seen from the calculation results that, compared with normal well conditions, well condition A is the change of downhole working conditions, well condition B is the change of surface working conditions, well condition C is normal well conditions, and well condition D is the change of downhole working conditions.

[0056]

[0057] Table 1

[0058]

[0059] Table 2

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Abstract

The embodiment of the invention discloses a well condition change identification method based on pumping unit electrical parameters. The well condition change identification method comprises the following steps that S1, the electrical parameters of a certain pumping unit under normal well conditions are collected; S2, the electrical parameters of the certain pumping unit under real-time well conditions are collected; S3, the rate of change of the electric parameters of the pumping unit under the real-time well conditions compared with the electric parameters of the pumping unit under the normal well conditions is calculated; S4, the sum of the rate of change of the electric parameters multiplied by the influence coefficients of the rate of change of the electric parameters is calculated, and a characteristic value of well condition changes is obtained; and S5, the characteristic value of the well condition changes is compared with an identification constant of the well condition change, and whether the well condition has obvious changes or not is determined. A calculation method is simple, software implementation is convenient, the efficiency of well condition identification is high, the calculation time is short, the advantage of identification efficiency is achieved especially for large-scale mass well condition identification, abnormal changes of well conditions can be detected in time by observing the electrical parameters, the advantages of being simple and quick are achieved, the test workload of test workers is reduced, investment is small, and equipment is not prone to being damaged.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of identification of well condition changes of electric parameters of pumping motors, and in particular to a method for identifying changes of well conditions based on electric parameters of pumping motors. Background technique [0002] With the widespread application of the Internet of Things in oil and gas production in the petroleum industry, how to use the data of the Internet of Things to discover and solve production problems has become the bottleneck of the big data application of the Internet of Things. The electrical parameters of the pumping motor are the key acquisition parameters of the Internet of Things in oil and gas production. Researching and analyzing the electrical parameters and timely grasping the changes in well conditions have become an important research direction for the big data application of the Internet of Things. Many methods in the industry that use th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/008
CPCE21B47/008
Inventor 滕奇刚王腾飞岳宪民蔡晓东王宇航杨嘉琦徐慧瑶
Owner 吉林石油集团有限责任公司通信公司
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