The real-time dynamic liquid level calculation method of the sucker rod well based on multi-view features fusion

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外文摘要：In the production of the sucker rod well,the dynamic liquid level is important for the production effi-ciency and safety in the lifting process.It is influenced by multi-source data which need to be combined for the dynamic liquid level real-time calculation.In this paper,the multi-source data are regarded as the different views including the load of the sucker rod and liquid in the wellbore,the image of the dyna-mometer card and production dynamics parameters.These views can be fused by the multi-branch neural network with special fusion layer.With this method,the features of different views can be extracted by considering the difference of the modality and physical meaning between them.Then,the extraction results which are selected by multinomial sampling can be the input of the fusion layer.During the fusion process,the availability under different views determines whether the views are fused in the fusion layer or not.In this way,not only the correlation between the views can be considered,but also the missing data can be processed automatically.The results have shown that the load and pro-duction features fusion(the method proposed in this paper)performs best with the lowest mean ab-solute error(MAE)39.63 m,followed by the features concatenation with MAE 42.47 m.They both performed better than only a single view and the lower MAE of the features fusion indicates that its generalization ability is stronger.In contrast,the image feature as a single view contributes little to the accuracy improvement after fused with other views with the highest MAE.When there is data missing in some view,compared with the features concatenation,the multi-view features fusion will not result in the unavailability of a large number of samples.When the missing rate is 10％,30％,50％and 80％,the method proposed in this paper can reduce MAE by 5.8,7,9.3 and 20.3 m respectively.In general,the multi-view features fusion method proposed in this paper can improve the accuracy obviously and process the missing data effectively,which helps provide technical support for real-time monitoring of the dynamic liquid level in oil fields.

外文关键词：

Dynamic liquid levelMulti viewFeatures fusionSucker rod wellDynamometer cards

作者：

Cheng-Zhe Yin、Kai Zhang、Jia-Yuan Liu、Xin-Yan Wang、Min Li、Li-Ming Zhang、Wen-Sheng Zhou

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作者单位：

School of Petroleum Engineering,China University of Petroleum,Qingdao 266580,Shandong,China

School of Petroleum Engineering,China University of Petroleum,Qingdao,266580,Shandong,China

School of Civil Engineering,Qingdao University of Technology,Qingdao,266580,Shandong,China

Tarim Oilfield Company,China National Petroleum Corporation,Kuerle,841000,Xinjiang,China

State Key Laboratory of Offshore Oil Exploitation,Beijing,100028,China

CNOOC Research Institute Ltd,Beijing,100028,China

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出版年：

2024

DOI：

10.1016/j.petsci.2024.05.005

石油科学(英文版)

中国石油大学（北京）

石油科学(英文版)

影响因子：0.88

ISSN：1672-5107

年,卷(期)：2024.21(5)