Petroleum Reservoir Evaluation and Development >
2021 , Vol. 11 >Issue 4: 542 - 549
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2021.04.010
Application of distributed optical fiber temperature monitoring technology in production and profile interpretation of fractured horizontal wells
Received date: 2021-04-06
Online published: 2021-08-19
The distributed optical fiber temperature monitoring technology is gradually being used to monitor the downhole production of fractured horizontal wells. However, it is still a huge problem to interpret the production profile of fractured horizontal wells quantitatively based on DTS data in low permeability gas reservoirs. In view of this, this study established the method, first, the temperature data preprocessing, and then, on the basis of the principle of conservation of mass and energy conservation of horizontal wells in low permeability gas reservoir fracturing coupling temperature forward model, finally using a variety of traffic data of mathematical methods of inversion layers, forming a set of monitoring based on distributed optical fiber temperature measurement technology of horizontal wells in low permeability gas reservoir fracturing of output profile processing and interpretation methods.The actual data processing of fractured horizontal well 5 was carried out by using the established method.The results show that the forward temperature fitting curve is basically consistent with the original temperature curve, which indicates the rationality and accuracy of the forward model.In addition, the calculated absolute errors of daily gas production of the five wells were between 100 m3 and 1 712 m3, and the absolute errors of daily water production are between 0.7 m3 and 1.8 m3. The errors are small and meet the production requirements. All these provided technical support for the development of low permeability gas reservoirs.
Xiaowei FENG , Yi ZHAO , Peng YANG , Jincheng ZHOU . Application of distributed optical fiber temperature monitoring technology in production and profile interpretation of fractured horizontal wells[J]. Petroleum Reservoir Evaluation and Development, 2021 , 11(4) : 542 -549 . DOI: 10.13809/j.cnki.cn32-1825/te.2021.04.010
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