Study on Compatibility Evaluation of Multilayer Co-Production to Enhance Recovery of Water Flooding in Oil Reservoir

IF 3 4区工程技术 Q3 ENERGY & FUELS

Energies Pub Date : 2024-07-25 DOI:10.3390/en17153667

Leng Tian, X. Chai, Lei Zhang, Wenbo Zhang, Yuan Zhu, Jiaxin Wang, Jianguo Wang

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引用次数: 0

Abstract

Increasing oil production is crucial for multilayer co-production. When there are significant differences in the permeability of each layer, an interlayer contradiction arises that can impact the recovery efficiency. After a number of tests and the establishment of a mathematical model, the effects of permeability contrast on oil production for water flooding were revealed. In the meantime, the developed mathematical model was solved using the Buckley–Lever seepage equation. Ultimately, the accuracy of the established model was confirmed by comparing the simulated outcomes of the mathematical model with the experimental results. The findings indicate that when permeability contrast increases, the production ratio of the high-permeability layer will improve. This is primarily due to the low-permeability layer’s production contribution rate decreasing. The accuracy of the established model is ensured by an error of less than 5% between the results of the experiment and the simulation. When the permeability contrast is less than three, the low-permeability layer can be effectively used for three-layer commingled production. However, when the permeability contrast exceeds six, the production coefficient of the low-permeability layer will be less than 5%, which has a significant impact on the layer’s development.

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提高油藏水淹采收率的多层共生兼容性评估研究

提高石油产量对多层共采至关重要。当各层渗透率存在显著差异时，就会产生层间矛盾，从而影响采油效率。经过多次试验和建立数学模型，揭示了渗透率对比对水淹采油的影响。同时，利用 Buckley-Lever 渗流方程对建立的数学模型进行了求解。最终，通过比较数学模型的模拟结果和实验结果，证实了所建立模型的准确性。研究结果表明，当渗透率对比度增大时，高渗透率层的生产率会提高。这主要是由于低渗透层的产油贡献率下降。实验结果与模拟结果之间的误差小于 5%，确保了所建立模型的准确性。当渗透率对比小于 3 时，低渗透层可有效用于三层混合生产。然而，当渗透率对比度超过 6 时，低渗透层的生产系数将小于 5%，这对该层的开发有很大影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energies ENERGY & FUELS-

CiteScore

6.20

自引率

21.90%

发文量

8045

审稿时长

1.9 months

期刊介绍： Energies (ISSN 1996-1073) is an open access journal of related scientific research, technology development and policy and management studies. It publishes reviews, regular research papers, and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.