多层合采智能完井节点优化组合模型研究

Multilayer Commingling with Intelligent Well Completion showed a significant advantage than Traditional Completion , but currently widely used in traditional commingling theory difficult to apply Internal Control Valves with Intelligent Well Completion commingling theoretical analysis of needs. The combination of this project to the system model of Intelligent Well Completion physics experiments and analysis, operations research principles and optimization theory, establish commingling wells yield optimal multilayer segment control valve node combination model, Study the multilayer commingled Inflow Performance Relationship regular pattern of combinations of different nodes, the characteristics of Internal Control Valve Inflow Performance Relationship, the increased regulation of water cut, come to the best of commingling production per well rule of node combination. First, the design of single-layer, multilayer Intelligent Well Completion of physical experimental system model, single-layer production, the commingling of simulation and experimental analysis of single-layer production, commingling into the inflow performance relationship characteristics of intelligent well completion and water cut increased by the regular pattern; Secondly, the establishment of commingling yield optimal node to optimize the combination of models based on verification and correction of models to experimental results; Finally, with optimization theory, get a commingling of Intelligent Well Completion yield optimum the optimization of Node Combination theory and method.

智能完井的多层合采方式较传统的合采方式表现出显著的优势，但是，目前广泛采用于传统多层合采的理论很难适用于安装有层段控制阀的智能完井多层合采的理论分析需求。本项目以智能完井物理实验系统模型分析、运筹学原理与最优化等理论相结合，建立多层合采单井产量最优多层段控制阀节点优化组合模型，研究多层合采不同节点组合下的流入动态规律、层段控制阀流入动态特性、含水上升规律，得出多层合采单井产量最优的节点组合规律。首先，设计单层、多层智能完井物理实验系统模型，进行单层开采、多层合采的模拟实验，并通过实验分析单层开采、多层合采智能完井的流入动态特征与含水上升规律；其次，建立多层合采产量最优节点优化组合数学模型，以实验结果为依据验证和修正数学模型；最后，结合最优化理论，形成一套多层合采智能完井产量最优节点优化组合理论与方法。

通过对国内外智能完井系统及其关键技术的深入调研与解剖，完成了液控型和电控型两套智能完井系统的系统设计，对系统中的几个关键部件进行了自主设计。以模拟实现智能完井系统功能为目标，自主研制了智能井模拟系统实验平台，为后续相关研究提供室内实验保障。以小波分析理论和数据处理技术为基础，研究智能完井系统井下实时监测数据处理方法，为生产管理与优化提供可靠的数据保障。结合物理实验与数值模拟实验，进行智能完井水侵监测模型研究。以层段控制阀流入动态特性研究为基础，探讨多层合采智能完井系统中不同节点位置处单相与油水两相流的流量变化规律。融合采油工程、流体力学、传热学、热力学等多学科理论，建立多层合采智能完井井筒流动模型和分层段产量计算模型，为多层合采智能完井流入动态曲线的绘制提供必要的产量数据。最后，利用油藏数值模拟软件和遗传算法，以油田开发中的经济净现值为目标函数，建立多层合采智能完井产量优化数学模型并求解。.本项目进一步促进了我国智能完井技术的发展，其研究成果对智能完井技术相关研究具有重要的借鉴价值，对自主设计与研制适合我国油田实际需求的智能完井系统具有重要的理论与指导意义。