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| 页岩气藏压裂水平井五区复合模型产能分析 | |
| 引用本文： | 尹洪军,赵二猛,付京,王磊,钟会影. 页岩气藏压裂水平井五区复合模型产能分析[J]. 西南石油大学学报(自然科学版), 2015, 37(3): 9. DOI: 10.11885/j.issn.1674-5086.2015.03.04.07 |
| 作者姓名： | 尹洪军 赵二猛 付京 王磊 钟会影 |
| 作者单位： | 1. 东北石油大学提高采收率教育部重点实验室，黑龙江大庆1633182. 东北石油大学非常规油气成藏与开发省部共建国家重点实验室培育基地，黑龙江大庆1633183. Geological Science & Engineering，Missouri University of Science and Technology，Rolla，Missouri 65401 6540，USA |
| 基金项目： | 国家科技重大专项（2011ZX05051）；中国石油和化学工业联合会科技项目（2014 01 02）。 |
| 摘 要： | 水平井结合水力压裂技术已经成为高效开发页岩气藏的有效手段。为此，建立并求解了综合考虑页岩气解 吸、扩散和渗流特征的页岩气藏压裂水平井五区复合渗流模型，获得了Laplace 空间的产量解析解。运用Stehfest 数值 反演技术得到了实空间的无因次产量，绘制并分析了无因次产能递减曲线。研究结果表明：产能递减曲线可划分为6 个流动阶段；窜流系数主要影响解吸扩散及以后的流动阶段；导流能力主要影响早期裂缝线性流动阶段；压裂区宽度 越大，产能越大；压裂区渗透率主要对中后期的产能曲线产生影响，渗透率越大，压裂之后形成的缝网与天然微裂缝沟 通的越好，产能越大。研究结果可为页岩气藏分段压裂水平井产能递减分析提供科学依据。 |
| 关 键 词： | 页岩气 压裂水平井 五区复合模型 产能分析 吸附解吸 |
Production Analysis of Composite Model of Five Regions for FracturedHorizontal Wells in Shale Gas Reservoirs |
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| Yin Hongjun,Zhao Ermeng,Fu Jing,Wang Lei,Zhong Huiying. Production Analysis of Composite Model of Five Regions for FracturedHorizontal Wells in Shale Gas Reservoirs[J]. Journal of Southwest Petroleum University(Seience & Technology Edition), 2015, 37(3): 9. DOI: 10.11885/j.issn.1674-5086.2015.03.04.07 | |
| Authors: | Yin Hongjun Zhao Ermeng Fu Jing Wang Lei Zhong Huiying |
| Affiliation: | 1. MOE Key Laboratory of Enhanced Oil Recovery，Northeast Petroleum University，Daqing，Heilongjiang 163318，China;2. Accumulation and Development of Unconventional Oil and Gas，State Key Laboratory Cultivation Base Jointly-constructed by Heilongjiang;Province and the Ministry of Science and Technology，Northeast Petroleum University，Daqing，Heilongjiang 163318，China;3. Geological Science & Engineering，Missouri University of Science and Technology，Rolla，Missouri 65401 6540，USA |
| Abstract: | Horizontal wells with hydraulic fracturing technology have become an efficient way to produce from shale gas reservoir. Therefore，a composite mathematical model of five regions for fractured horizontal wells in shale gas reservoirs is established in this paper with consideration of desorption，diffusion and percolation characteristics. Then the analytical solution is deduced in Laplace space. Based on the Stehfest numerical inversion algorithms，the analytical solution of dimensionless production in real space is obtained，and dimensional production decline curve is plotted and analyzed. The results show that decline curve can be divided into six different flow regimes according to the characteristics；interporosity flow coefficient mainly influences the shape of desorption and later stages；hydraulic fracture conductivity mainly influences the shape of early linear flow stage，permeability of the stimulated region mainly influences the shape of mid-to late stage. The greater the width of stimulated region is，the higher the production is，and the greater the permeability is，the higher the production is，because the fracture network after being hydraulic fractured is connected well with natural fractures. The results obtained can provide scientific basis for reasonable analysis to production analysis for fractured horizontal wells in shale gas reservoirs. |
| Keywords: | shale gas fractured horizontal wells composite model of five regions production analysis adsorption and desorption |
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