川西气田涡流排水采气工艺技术研究

发布时间：2018-07-03 19:08

本文选题：气井积液 + 排水采气　；参考：《西南石油大学》2015年硕士论文

【摘要】：随着气井生产的进行,井底积液问题逐渐凸显,能否及时排液成为保障气井正常生产的关键所在。然而,传统的排水采气工艺越来越不能满足复杂多变的生产实际,研究推广新型高效排水采气工艺越来越迫切。而在排液采气工艺中,涡流排水采气工艺是近年来兴起的一项新技术。国内外许多成功经验表明涡流工具具有良好的携液能力,能显著提升积液气井的采收率。然而,2013年川西气田引进了涡流排水采气工艺并进行了先导试验表明,其排水采气效果却并不理想,远远没有达到文献中的效果。分析可能的原因主要在于国内外人们对涡流工具的适用条件认识不够明确,过于经验化,导致选井不合适,同时工具结构参数并不合理,有待优化。本文在充分调研涡流工艺排水采气相关文献的基础上,详细分析了涡流工具排水采气的工作原理、结构特征、作业方式和理论计算基础,通过使用Catia、Gambit和Fluent等3款商业软件进行物理建模和数值模拟,进行了结构优化并制作出工具样件,采用室内实验验证与数值模拟相结合的方式,深入研究气井产能特征、井身结构和工具参数对涡流工具排采效果的影响情况,以优化工具结构,并结合川西气田的实际情况,提出了合理的、明确的选井建议和适用条件,为国内产水气田排水采气工艺的筛选和涡流排水采气工艺的推广应用提供借鉴与参考。
[Abstract]:With the development of gas well production, the problem of bottom hole fluid accumulation is becoming more and more prominent, and the key to ensure gas well normal production is to discharge liquid in time. However, the traditional drainage gas production technology can not satisfy the complicated and changeable production practice more and more, so it is more and more urgent to study and popularize the new high efficiency drainage gas production technology. In the process of discharging liquid and gas, eddy current drainage gas recovery is a new technology developed in recent years. Many successful experiences at home and abroad show that the eddy current tool has a good liquid carrying capacity and can significantly improve the recovery factor of the gas well. However, in 2013, the eddy current drainage gas recovery technology was introduced into the western Sichuan gas field and the pilot test showed that the drainage and gas recovery effect was not ideal and far from the effect in the literature. The main reason for the analysis is that people at home and abroad do not have clear understanding of the applicable conditions of eddy current tools, which leads to improper selection of wells and unreasonable structural parameters of tools, which need to be optimized. In this paper, based on the investigation and investigation of the relevant literature on drainage and gas production of eddy current process, the working principle, structure characteristics, operation mode and theoretical calculation basis of drainage and gas production with eddy current tools are analyzed in detail. Through the physical modeling and numerical simulation of three commercial software such as Catia Gambit and fluent, the paper optimizes the structure and makes a tool sample. The productivity characteristics of gas wells are deeply studied by the combination of laboratory experiment verification and numerical simulation. The influence of wellbore structure and tool parameters on the effect of eddy current tool drainage and production, in order to optimize the tool structure, and combined with the actual situation of western Sichuan gas field, the reasonable and definite well selection suggestions and applicable conditions are put forward. It provides reference and reference for the selection of drainage gas production process and the popularization and application of eddy current drainage gas recovery technology in domestic water producing gas fields.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE377

【参考文献】