压裂液注入动态监测技术研究与系统设计

发布时间：2018-07-26 12:33

【摘要】：水力压裂是改善低产能、低渗透率油气藏,使低渗透、超低渗透油气藏增产或者恢复生产最直接、最有效的手段方式。水力压裂施工质量的高低直接影响致密性油气藏开采效率的高低及油气田经济效益的高低。压裂施工中的压裂液是水力压裂技术的重要组成部分,压裂液注入动态位置和压裂管柱中压裂液动态摩阻监测对压裂施工参数优化以及确保压裂施工安全都具有很重要的工程意义。本文在广泛调研国内外压裂液注入动态监测发展现状的基础上,展开对压裂液注入动态监测机理进行深入研究,提出一种适用于常规井压裂施工现状的压裂液注入运动动态位置及压裂管柱中压裂液动态摩阻监测的方法,并开发和集成了相对应的配套系统。本文取得成果如下:1.开发了一套不依托井下测量仪器而是利用地面压裂仪表车组配套仪器测量方式实现压裂液注入动态监测,并辅以配套数据采集系统,实现了对注入压裂液运动动态位置监测及注入压裂管柱中压裂液动态摩阻监测;2.通过文献调研分析了现有压裂液注入动态监测方法的优劣性与适用性,提出一种利用地面压裂仪表车组配套的仪器测量的压裂液注入动态监方法;3.通过研究压裂液注入动态监测机理,建立了压裂液注入动态监测的表征模型,即注入压裂液的运动动态位置监测模型和压裂管柱中压裂液动态摩阻监测模型;对位置监测模型及摩阻监测模型进行改进及优化,提高了监测系统的准确性;4.结合压裂液注入动态监测模型完成了系统总体方案设计、架构设计和硬件设备配套,并结合算法压裂液注入动态监测模型数据需求,建立了压裂液注入动态监测系统配套数据库,为指导压裂现场的下一步施工提供了数据支撑;5.基于压裂液注入动态监测模型及建立的系统配套数据库进行了系统软件设计,最终形成了一套完整的压裂液注入动态监测系统,并利用压裂现场数据进行了应用测试,测试应用结果表明:系统运行稳定可靠,监测效果良好,满足了设计目标,具有良好的现场应用前景。6.本文设计并开发的压裂液注入动态监测系统充分发挥了地面监测方法的优势,在降低监测成本的基础上,很好地实现了对压裂液注入动态位置的监测以及压裂管柱中压裂液动态摩阻的监测。
[Abstract]:Hydraulic fracturing is the most direct and effective way to improve oil and gas reservoirs with low productivity and permeability and to increase production or restore production in low permeability and ultra low permeability reservoirs. The quality of hydraulic fracturing directly affects the production efficiency of tight reservoirs and the economic benefits of oil and gas fields. Fracturing fluid is an important part of hydraulic fracturing technology. The dynamic position of fracturing fluid injection and the dynamic friction monitoring of fracturing fluid in fracturing string are of great engineering significance to the optimization of fracturing operation parameters and to ensuring the safety of fracturing operation. On the basis of extensive investigation of the present situation of fracturing fluid injection dynamic monitoring at home and abroad, the mechanism of fracturing fluid injection dynamic monitoring is deeply studied in this paper. This paper presents a method for monitoring the dynamic position of fracturing fluid injection and the friction resistance of fracturing fluid in fracturing pipe string, which is suitable for the present situation of fracturing operation in conventional wells, and develops and integrates the corresponding matching system. The results of this paper are as follows: 1. Instead of relying on underground measuring instruments, a set of measurement methods for fracturing fluid injection performance is developed, which is based on the supporting instrument of ground fracturing instrument train set, and is supplemented with a data acquisition system. The dynamic position monitoring of injection fracturing fluid and the monitoring of dynamic frictional resistance of fracturing fluid in injection fracturing string are realized. The advantages and disadvantages and applicability of the existing fracturing fluid injection dynamic monitoring methods are analyzed through literature investigation. A new method for monitoring the injection performance of fracturing fluid is proposed, which is based on the instrumentation of the ground fracturing instrument train set. By studying the monitoring mechanism of fracturing fluid injection performance, a characterization model of fracturing fluid injection performance monitoring is established, that is, the dynamic position monitoring model of fracturing fluid injection and the dynamic friction monitoring model of fracturing fluid in fracturing string. The position monitoring model and friction monitoring model are improved and optimized to improve the accuracy of the monitoring system. Combined with the fracturing fluid injection dynamic monitoring model, the system overall scheme design, architecture design and hardware equipment matching are completed, and combined with the algorithm fracturing fluid injection dynamic monitoring model data requirements, The matching database of the fracturing fluid injection dynamic monitoring system is established, which provides data support for the next operation of the fracturing site. Based on the dynamic monitoring model of fracturing fluid injection and the system supporting database, the system software is designed, and a set of complete fracturing fluid injection dynamic monitoring system is formed, and the application test is carried out by using the fracturing field data. The test results show that the system is stable and reliable, the monitoring effect is good, the design goal is satisfied, and the system has a good field application prospect .6. The fracturing fluid injection dynamic monitoring system designed and developed in this paper gives full play to the advantages of the surface monitoring method, and on the basis of reducing the monitoring cost, The monitoring of the dynamic position of fracturing fluid injection and the monitoring of dynamic frictional resistance of fracturing fluid in fracturing string are well realized.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE357.1

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