Method for predicting service life of downhole pulse electrode
An electrode and life technology, applied in special data processing applications, design optimization/simulation, CAD numerical modeling, etc., can solve problems such as construction troubles, impact on the service life of pulsed electrodes, inability to obtain electrode service life, etc., and achieve accurate electrode life. Effect
Active Publication Date: 2020-08-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
However, the service life of the pulse electrode is affected by various operating conditions, and the service life of the electrode cannot be obtained based on construction experience alone, causing certain troubles to the construction
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[0020] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] Such as figure 1 As shown, a method for predicting the life of a downhole pulsed electrode is provided, which includes the following steps:
[0022] (1) Obtain the working condition of the downhole pulse electrode;
[0023] (2) Input the downhole operation depth, electrode initial gap, electrode diameter, ambient temperature, discharge voltage, and water conductivity into the simulation ...
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The invention discloses a method for predicting the service life of an underground pulse electrode. The method comprises the following steps: (1) obtaining underground pulse electrode working conditions; (2) inputting downhole operation depth, a electrode starting gap, the electrode diameter, environment temperature, the discharge voltage and the conductivity of water into a simulation model; (3)obtaining ablation rate of the electrode after the single discharge is finished; (4) predicting the service life of the electrode according to the ablation rate and the discharge frequency; and (5) guiding construction operation according to the predicted service life of the electrode. Factors influencing the service life of the pulse electrode in the underground water are comprehensively considered, and the service life of the electrode can be rapidly, conveniently and accurately predicted according to operation conditions. According to the predicted electrode service life, the single well descending operation time of related equipment is designed, and a guiding effect is provided for unconventional shale oil and gas well construction.
Description
technical field [0001] The invention belongs to the field of unconventional shale oil and gas, and in particular relates to a method for predicting the service life of a downhole pulse electrode. Background technique [0002] At present, the main output of oil comes from old oil fields, but the old oil fields have reduced production due to pollution and blockage to varying degrees. At present, the traditional methods of chemical plugging removal and fracturing plugging removal are mainly used for plugging removal in oilfields, but the processing, storage and transportation of chemicals and the ecological problems caused by them have seriously restricted the application of this method, and the use of fracturing plugging removal will also bring to serious groundwater pollution. [0003] Oil field stimulation devices based on hydroelectric effect and pulse power technology have been extensively studied in recent years. By generating a strong impact hydroelectric pulse wave in ...
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Login to View More IPC IPC(8): G06F30/23G06F111/10
CPCG06F30/23G06F2111/10
Inventor 康忠健聂云良王聪翟刚毅龚大建王玉芳
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)