徐深气田深层气井多层压裂工具优化

发布时间：2018-06-16 08:31

本文选题：徐深气田 + 多层压裂　；参考：《东北石油大学》2017年硕士论文

【摘要】：大庆油田进行水驱开发已经超过50年,在主力油田开发进入双特高状态,后期稳产形势严峻的态势下,油田提出了“以气补油”的开发战略,而以徐深气田为主的天然气储层主要为Ⅱ、Ⅲ类火山岩储层和沙河子砾岩储层,存在渗透率低、开发难度大的情况,所以需要发展实现有效的大规模压裂改造技术。本文计算了管柱压裂时高压下发生的不同程度的弯曲变形时的临界载荷,判定压裂管柱所需承受的压力情况,校对其强度的安全性。并对压裂工艺管柱磨蚀机理进行了初步分析,通过SOLIDWORDS建模,然后采用FLUENT软件对导压喷射装置进行数值模拟研究,通过模拟判断不同排量,不同砂比下装置内的压力变化,以及流体对壁面的冲蚀强弱。在符合模拟计算的条件下筛选抗压的压裂工具材料以及耐冲蚀的非晶金属涂层。最后通过实验验证判定所选取的压裂工艺配套工具的可行性,最后实现对多层压裂工艺的优化。
[Abstract]:In Daqing oilfield, water flooding has been developed for more than 50 years. In the main oil field development into a double high state, and in the severe situation of stable production, the oil field has put forward the development strategy of "gas supplement", while the natural gas reservoirs mainly of the Xu deep gas field are II, III type volcanic reservoir and Shahe conglomerate reservoir, and the permeability is low. It is very difficult to develop an effective and effective large-scale fracturing technology. This paper calculates the critical load of different degrees of bending deformation at the high pressure of Guan Zhu fracturing, determines the pressure conditions required by the fractured pipe column, proofreads the safety of its strength, and carries out the abrasion mechanism of the fracture process tube column. Preliminary analysis, modeling by SOLIDWORDS, and then using FLUENT software to simulate the pressure jet device, through the simulation of the different displacement, the pressure change in the device under different sand ratio, and the erosion strength of the fluid to the wall. Under the condition of simulation calculation, the compression fracturing tool material and the erosion resistance are screened. Finally, the feasibility of the selected fracturing process matching tools is determined by experimental verification, and finally the optimization of multi-layer fracturing process is realized.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE934.2

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