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Leakage identification method, device and computer equipment

A lost circulation and drilling technology, which is applied in the field of lost circulation identification methods, devices and computer equipment, can solve the problems of high requirements for field engineers, poor inflow and outflow of mud pool area, low identification accuracy and timeliness, etc. To achieve the effect of improving the training speed and accuracy, reducing the amount of calculation, and improving the classification speed

Active Publication Date: 2019-03-15
RICHFIT INFORMATION TECH +1
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Problems solved by technology

[0004] Due to the large area of ​​the mud pool or inaccurate statistics of inflow and outflow differences, this method can only be identified when lost circulation occurs to a certain extent, so the accuracy and timeliness of this method are relatively low; more demanding

Method used

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  • Leakage identification method, device and computer equipment
  • Leakage identification method, device and computer equipment
  • Leakage identification method, device and computer equipment

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Embodiment Construction

[0054]In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0055] figure 1 It is a flowchart of a lost circulation identification method provided by an embodiment of the present invention, and the lost circulation identification method can be applied to computer equipment. see figure 1 , the example includes:

[0056] 101. Acquire initial data arranged in time series.

[0057] The initial data includes historical drilling data and lost circulation conditions corresponding to the historical drilling data.

[0058] 102. Perform data cleaning on the initial data to obtain sample data.

[0059] The sample data includes positive sample data and negative sample data, the positive sample data is the historical drilling data during the lost circulation period, and the negative sample data is the hi...

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Abstract

The invention discloses a lost circulation identification method, a device and a computer device, belonging to the technical field of drilling. The invention takes the historical drilling data and thecorresponding well leakage situation as the initial data, and cleans the initial data to make it meet the input requirements of the classification model, and can improve the accuracy of the classification result. In the sample data, the preset number of features and their corresponding sample data are extracted according to the contribution value from large to small, in order to reduce the amountof data input into the classification model and improve the training speed and accuracy of the model. Then, according to the sample data corresponding to the preset number of features and the leakagesituation, the classification model which meets the preset accuracy requirements is obtained. In the real-time identification of lost circulation, the real-time drilling data are input into the classification model, and the lost circulation identification results are obtained. The lost circulation identification method mentioned above can obtain the lost circulation identification results with high accuracy and timeliness without requiring the field engineer to have higher operation level.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a lost circulation identification method, device and computer equipment. Background technique [0002] In underground drilling engineering, many complicated situations may occur downhole. These complicated situations may delay drilling in the slightest and cause serious safety accidents in severe cases. Among the common downhole complex situations, lost circulation is the complex situation with the highest occurrence rate and the greatest economic loss. Therefore, it is necessary to find a way to identify the lost circulation situation based on drilling data. [0003] At present, the commonly used method is to identify the lost circulation according to the change of the total volume of the mud pool and the difference between the flow rate in and out during the drilling process. . [0004] Due to the large area of ​​the mud pool or the inaccurate statistics of the inflow and ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62E21B47/10
CPCE21B47/10G06F18/24
Inventor 马君马旭鑫金玮邸抗祝军宫本儒李新宅安向哲
Owner RICHFIT INFORMATION TECH