%0 Journal Article %T 基于半解析方法的分级多段压裂水平井产能预测模型研究
Research on Productivity Prediction Model of Staged Multi-Segment Fractured Horizontal Wells Based on Semi-Analytical Method %A 田洛 %A 黄子舰 %A 张秋实 %A 赵一唯 %A 任星兆 %A 冯小军 %J Journal of Oil and Gas Technology %P 131-142 %@ 2471-7207 %D 2025 %I Hans Publishing %R 10.12677/jogt.2025.471016 %X 基于半解析理论提出的裂缝之间和裂缝内部的离散和耦合方法，对研究复杂缝网下的水平井产能预测方法对非常规油气开采具有重要意义。本文基于渗流理论和源函数理论，建立了流体在裂缝中、地层中以及在井筒内的渗流模型、水平井筒压力损失计算模型、水平井间干扰模型；通过引入裂缝中心坐标作为计算参数，对裂缝进行离散化处理，实现了裂缝间、裂缝与井筒间、裂缝与地层间的耦合，建立了水平井注采井网的产能预测模型。通过对产能影响因素分析可得：早期裂缝数量的增加使裂缝与储层接触面积变得更大，渗流通道增多，更多的流体可以通过裂缝流向井筒，从而提高产量。并随着地层渗透率、裂缝长度、裂缝导流能力的增大，流体渗流阻力变小、无阻流量增大，提高了储层的采出程度，产能会进一步显著提高。同时本文对油田现场分级多段压裂水平井产能预测具有一定的参考应用价值。
The discretization and coupling methods proposed between and within fractures based on semi-analytical theory are of great significance for studying productivity prediction methods for horizontal wells in complex fracture networks in unconventional oil and gas extraction. This paper establishes fluid flow models in fractures, formations, and wellbores, pressure loss calculation models for horizontal wellbores, and interference models between horizontal wells based on fluid flow theory and source function theory. By introducing the coordinates of fracture centers as calculation parameters, the fractures are discretized, enabling coupling between fractures, between fractures and wellbores, and between fractures and formations. Furthermore, a productivity prediction model for horizontal injection-production well networks is established. Analysis of factors influencing productivity reveals that an increase in the number of fractures in the early stages results in a larger contact area between fractures and the reservoir, more flow channels, and more fluid flowing into the wellbore through fractures, thereby enhancing production. As formation permeability, fracture length, and fracture conductivity increase, fluid flow resistance decreases and the absolute open flow potential increases, leading to higher reservoir recovery and further significant improvements in productivity. Additionally, this paper provides certain reference value and application significance for productivity prediction of staged multi-fractured horizontal wells in oilfield operations. %K 半解析方法， %K 注采井网， %K 产能预测， %K 敏感性分析
Semi-Analytical Method %K Injection-Production Well Pattern %K Productivity Prediction %K Sensitivity Analysis %U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=110627