新型高压水射流径向水平井技术研究与应用

发布时间：2018-06-10 15:23

本文选题：高压水射流 + 新型　；参考：《东北石油大学》2017年硕士论文

【摘要】：新型高压水射流径向水平井技术在地面超高压的情况下,除循环延程压力损耗外使得井下喷射工具获得了更大的喷射压力,从而提高了喷射软管的刚性准直以及破岩能力,使得高压软管更有效、更准直的穿越油藏,做到有的放矢,对于开发星点油藏和边际油藏是一种很好的技术手段,其施工在套管上进行局部开窗,与常规开窗侧钻井相比,对套管损伤小;不需要钻柱与钻头的旋转,减少了井下复杂情况的发生;采用高压水射流技术,施工周期短,最大限度的降低油层污染;疏通稠油井注汽通道,增加注汽量;改善地下井网布局,在生产层中创造一个更大的供油区,增大泄油面积[1]。本论文主要从事新型高压水射流径向水平井地面设备配套、井下工具、油藏工程评价以及喷射液的应用研究,通过研究国外相关先进高压水射流技术和自身现场应用实践,总结新型高压水射流径向水平井现场施工技术、地面设备配套、井下工具工作原理、油藏工程评价以及喷射液组成,为该技术在辽河油田的应用提供了理论研究。通过研究新型高压水射流径向水平井取得了以下成果。地面设备的配套,通过压力流程损耗计算,要满足井下足够的喷射压力,采用直径12mm连续管作为工作管柱是可以满足条件的;地面超高压的形成单靠多级泵是无法实现的,需要地面增压装置的参与才能达到超高压。井下工具研究,开窗钻头应采用碳钢合体制造,能够满足一般N80套管开窗钢级,钻头有基体和刀片组成,刀片设计采用前角x=12.5°、后角y=10°、主偏角z=5°、后刃倾角w=10°更有助于切削;万向节,采用十字轴式万向节结构,在传递高扭矩的情况下其自身磨损小,使用周期长;转向器的研究,采用响应面法和有限元计算方法,建立了转向器滑动摩擦阻力关于转向器结构参数的响应面模型。喷射钻头,建立喷射钻头自进公式,通过模拟计算和试验,得出最优扩散角在14.5°左右。
[Abstract]:A new type of high pressure water jet radial horizontal well technology in the case of surface ultra-high pressure, in addition to circulation delay pressure loss, the downhole injection tool to obtain greater injection pressure, thus improving the injection hose rigid collimation and rock breaking ability. Making the high-pressure hose more effective, more collimated through the reservoir, so as to be targeted, for the development of star-point reservoir and marginal reservoir is a good technical means, its construction on the casing for partial window, compared with conventional windowing side drilling, The casing damage is small, the rotation of drill string and bit is not needed, and the occurrence of complex downhole situation is reduced; the high pressure water jet technology is adopted, the construction period is short, the oil layer pollution is minimized, the steam injection channel of heavy oil well is dredged, and the steam injection rate is increased. Improve the layout of underground well pattern, create a larger oil supply area in the production layer, increase the oil discharge area [1]. This paper is mainly engaged in the research of new high pressure water jet radial horizontal well surface equipment, downhole tools, reservoir engineering evaluation and the application of injection fluid, through the research of foreign advanced high pressure water jet technology and its own field application practice. This paper summarizes the field construction technology of new high pressure water jet radial horizontal well, surface equipment matching, working principle of downhole tools, reservoir engineering evaluation and injection composition, which provides a theoretical study for the application of this technology in Liaohe Oilfield. The following results have been achieved by studying a new high-pressure water jet radial horizontal well. In order to meet enough injection pressure, the matching of surface equipment can satisfy the condition of using diameter 12mm continuous pipe as working string, and the formation of surface ultra-high pressure can not be realized by multi-stage pump alone. The participation of ground booster device is required to achieve ultra high pressure. The research of downhole tools shows that the windowing bit should be made of carbon steel, which can meet the general N80 casing windowing steel grade. The drill bit has matrix and blade composition. The blade is designed with the front angle of 12.5 掳, the rear angle of yaw 10 掳, the main deviation angle of 5 掳and the rear edge angle of 10 掳, which is more helpful for cutting. The universal joint adopts the cross shaft universal joint structure, its own wear is small and the service period is long under the condition of transmitting high torque, the research of the steering gear adopts the response surface method and the finite element calculation method, The response surface model of the sliding friction resistance of the steering gear on the structural parameters of the steering gear is established. The self-feeding formula of jet bit is established. The optimum diffusion angle is about 14.5 掳through simulation calculation and test.
【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】：TE243

【参考文献】