页岩气水平井气水两相生产测井模拟实验研究

Based on the multiphase fluid mechanics theory and the horizontal three phase flow loop, The dynamic monitoring methods for low production and low pressure gas-liquid two phase well will have been studied in this project. The method is a kind of Physical simulation experiment method in which the individual phases of gas and water are pumped from their individual tanks into 126mm ID plexiglass pipeline. The water and gas flow rates and water holdup are measured by production logging tools. According to a comprehensive analysis of the experiment data and fluid mechanics model, the shale gas horizontal well production logging method and data interpretation will have studied in the project.The method has the advantages of dynamic calibration between measuring signal of production logging tools with experimental data, with which the mismatch will be solved effectively between production logging interpretation model and logging data, thus the interpretation accuracy and veracity will be enhanced. In the application study area, the characteristics study of production logging tools responded from working condition which features low production, low pressure, horizontal well fractured and screen completion will lead to find a logging method and interpretation for shale gas horizontal production well, which is a new effective tool in the shale gas horizontal production well monitoring and evaluation of fracture effects.

本项目以多相流体力学理论为依据，以多相流动环路模拟试验平台为手段，进行低产、低压气液两相生产井生产动态监测方法和测井资料解释应用基础研究。该方法是通过改变地面多相流动环路模拟试验装置的工作环境，测定不同测量模式的测井仪器在不同流动状态下的响应信息,综合分析实验配给流动参数和多相流体力学理论模型，形成页岩气水平井生产动态监测准确有效的测井方法和测井资料解释评价技术。该方法具有现场测试仪器的响应信息与实验配给数据的动态刻度特点，能较好地解决测井资料解释模型与测井数据不匹配问题，从而提高生产动态监测测井资料解释精度与准确性。在方法应用研究方面，针对页岩气生产井低产、低压、水平井压裂、筛管完井等生产特征，研究该生产条件下生产测井成套仪器在连续测量和集流测量模式测井仪器的响应特征，提出页岩气水平井生产动态监测测井方法和资料解释评价技术，为页岩气井生产动态监测和压裂增产效果检查提供新的有效的技术手段。

生产测井技术已广泛应用于油气井生产动态监测中，页岩气藏水平井开发方式改变了井筒内流体的分布状态，使气液两相流生产测井和解释评价更加困难。本项目对页岩气水平井生产测井方法及解释评价方面的问题，开展了页岩气藏储层特点及页岩气井生产特征、页岩气井生产环境下的气液两相管流流动机理、生产测井仪器的优选及测试方法设计、页岩气井气液两相管流数值模拟、水平井气液两相流动模拟实验、页岩气井水平井气液两相流动模型及生产测井综合解释方法研究。形成了页岩气井水平井不同产量情况下的生产测井最佳测井方案、利用生产测井资料的流型识别方法，结合井筒内多相流动理论，建立了相应的解释图版和解释模型，为页岩气水平井生产动态监测建立了一套有效的生产测井方案和评价方法，促进页岩气井动态监测技术的发展。同时进一步的研究页岩气水平井压裂效果评价和裂缝、流体产出方位确定提出了必不可少的基础性工作，也为生产测井技术在油气藏动态监测方面的进一步应用展示了良好的景象。