Numerical Simulation Study on Thermal Stimulation Testing Method for Production Profile of Horizontal Wells with Low Fluid Production

doi:10.12388/j.issn.1673-2677.2025.04.008

Abstract

Abstract:

Given the technical problems such as noise interference and low testing accuracy existing in production logging of horizontal wells with low fluid production，a production logging method based on active thermal stimulation is proposed. Specifically，a "temperature tracer particle" heat source area with a controlled direction is formed in the wellbore，and the water content and the fluid velocity in the horizontal well are precisely measured at the same time，by monitoring the temperature rise and the movement pattern of the temperature tracer particle through the optical fiber. The results of theoretical model calculation and analysis show that for fluids with different water content，the temperatures of temperature tracer particles formed with the same heating power and heating time are considerably differentiated. The temperature rise of temperature tracer particles is higher in the case of lower water content，and vice versa. Moreover，the fluid velocity in the horizontal well can be effectively captured by measuring the velocity of the released temperature tracer particle with the optical fiber. The temperature tracer particle based on active thermal stimulation are a double tracer of both thermodynamics and kinetics—the temperature evolution directly shows the water content of fluids，and the movement velocity is an accurate measure to invert the fluid flow status. The integration of the two features provides a new technical route for the measurement of parameters of horizontal wells with low fluid production，and reliable and quantitative references for production profile logging of horizontal wells with complex wellbore conditions.

Key words: horizontal well, thermal excitation, temperature tracer particle

摘要：

针对低液量水平井生产测井存在测试信号弱、测试精度低等技术难题，提出一种基于主动热激励的测井方法。通过构建“温度示踪粒子”动态监测体系实现参数反演 ——在井筒内定向生成“温度示踪粒子”热源区域后，利用光纤实时捕捉其升温特性与运动轨迹，同步完成含水率与流速的精准测定。理论模型计算结果表明：对于不同含水率的液体，在相同加热功率、相同时间内制造的“温度示踪粒子”温度存在明显差别，含水率高的工况“温度示踪粒子”升温幅度小，含水率低的工况“温度示踪粒子”升温幅度大；其次，释放“温度示踪粒子”后，通过光纤对“温度示踪粒子”的移动速度进行监测，可以有效计算出水平井中液体的流速。主动热激励形成的“温度示踪粒子”兼具“热力学标记”与“动力学示踪” 双重功能，其升温特性可直接映射液体含水率差异，运动速度可准确反演流体流动状态，两者结合构建了低液量水平井参数测定的技术新路径，可为复杂井筒条件下的水平井产出剖面测试提供可靠的量化依据。

关键词:

水平井, 热激励, 温度示踪粒子

CLC Number:

TE272

MA Zehao.

Numerical Simulation Study on Thermal Stimulation Testing Method for Production Profile of Horizontal Wells with Low Fluid Production [J]. Xinjiang Oil & Gas, 2025, 21(4): 65-69.

马泽昊.

低液量水平井产出剖面热激励测试方法数模研究 [J]. 新疆石油天然气, 2025, 21(4): 65-69.

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