低渗油气田完井固井技术研究与应用

发布时间：2018-01-12 15:15

本文关键词：低渗油气田完井固井技术研究与应用　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：众所周知,在钻井过程的原油开采的时候,采用水平井方式是目前提高利益的有效方法,而在低渗透油田开发中同样采用水平井压裂进行完井操作,可以使得采油效益最大化,然而水平井结构复杂,无论是钻井阶段还是完井阶段都存在着一定的困难,特别是完井固井阶段难以有效的封固,岩屑难以清除,射孔质量难以保证,固井水泥易毁坏造成各种事故,所以水泥浆的选择就显得特别的重要。这就要求现场油气田开发所选择的水泥浆具有良好流动性,固化稠化性,同时要求有一定的滤失和柔韧性能。为了有效的保证低渗油气田完井工作的顺利进行,提高固井作业水泥浆的沉降稳定性,消除水平井钻屑床和水泥浆自由液槽的影响,降低水泥浆滤失和漏失污染储层的风险,保证水泥浆形成有效的管柱与地层封固,有效的地层与地层分隔,控制和消除水平井储层流体对固井质量的影响,提高水泥石在射孔和压裂过程中的高冲击作用下的完整性,降低低渗油气田综合开发成本,提高油气田开发效率,本文开展了低渗油气田固井水泥浆技术的研究。通过充分调研国内外由于增产作业,特别是压裂作业,导致的水泥环损坏事件,从所用水泥浆体系存在的缺陷和施工作业程序等角度分析损坏原因,为低渗油田压裂井固井设计提供依据。在本文中,阐述了低渗透油气井固井技术的研究现状,从低渗透油气田应用碎屑评价方法,抗冲击不含游离液体过滤泥浆,研究了低渗透油气田水平井压裂完井固体浆料,以加强水泥浆的水泥固化和迁移控制,提高浆料的柔性,更好地指导实际工作。通过对国内外文献以及现场数据的全面研究,以低渗透油田压裂井固井设计为基础,得到合适的固井水泥浆体系。
[Abstract]:As everyone knows, in the drilling process of oil exploitation, the horizontal well is an effective method to improve profitability, while in low permeability oilfield development using the same fracturing horizontal well completion operation, can make the production benefit maximization, but the horizontal well complex structure, both the drilling phase or completion stage exist the difficulties, especially to the completion and cementing stage cementing, perforating debris is difficult to remove, it is difficult to guarantee the quality of cementing, easy damage caused by various accidents, so the choice of cement slurry is especially important. This requires the cement slurry of oil and gas field development and choice of good fluidity and curing consistency. A filter and flexible performance requirements. At the same time for oil and gas well completion work smoothly with low permeability effectively, improve the sedimentation stability of cementing slurry, fire In addition to the impact of crumbs in the bed and slurry tank free horizontal well drilling, reduce slurry filtration and leakage risk loss of reservoir pollution, ensure the formation of cement slurry column and strata cementing, formation and formation of effective separation, control and eliminate the level of the reservoir fluid on the influence of improving cementing quality, integrity high impact of cement stone in perforating and fracturing process of low permeability oil and gas field development cost, improve the efficiency of oil and gas field development, this paper carried out the research on oil and gas field cementing technology in low permeability. Through sufficient research at home and abroad because of increased production, especially the fracturing operation, leading to the cement ring from the point of view of the damage, the cement slurry system defects and the construction procedure analysis of the causes of damage to the low permeability oilfield fracturing well cementing design basis. In this paper, expounds the low-permeability oil and gas wells cementing technology The research status, application of debris from the evaluation of low permeability oil and gas field method, impact free liquid filtration of mud, low permeability oil fracturing of horizontal gas well completion solid slurry, to strengthen the cement solidification and migration control of cement slurry, slurry to improve flexibility, to better guide the practical work. Based on the literatures at home and abroad, a comprehensive study of the field data in low permeability oil well cementing and fracturing design as the foundation, get the cement slurry system suitable.

【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】：TE25

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