大庆长垣地区深井钻井技术研究及应用

发布时间：2018-03-21 14:31

  本文选题：钻井技术　切入点：PDC钻头　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：深井、超深井钻井技术是一个国家钻井技术发展水平的标志。美国和欧洲的深井钻井技术水平一直处于世界领先水平。中石油近年来在深井机械钻速、钻井周期、单井钻头用量等方面都取得了很大进步,同时在深井钻井装备上也有了很大发展。但是同世界先进水平相比,中石油在复杂深井钻井水平方面还有很大差距。深部地层防斜打直问题和深部硬地层快速钻进问题是深井、超深井钻井中两大技术难题,是制约深井、超深井钻井发展的技术关键。深部井眼岩石力学的研究,特别是深部井眼岩石可钻性和岩石各向异性的研究,是解决深井、超深井钻井关键技术的重要课题。文章充分调研了国内外深井、超深井钻井状况,分析深井、超深井钻井存在的主要技术难题、钻井岩石力学在深井、超深井中的应用状况、深井、超深井钻井的关键技术及钻井岩石力学在深井、超深井钻井中的作用,分析了深部岩石力学在深井、超深井钻井中的井眼稳定技术、井斜控制技术、高效破岩技术和地层压力的钻前定量预测等关键技术上的发展前景。针对松辽盆地北部深井地质特点,结合以往大庆油田深井钻井实际,提出从钻头选型及喷嘴组合、钻具组合设计、钻井参数优选、钻井液体系选择等方面着手提高深井钻井速度。7口深井钻井实践表明,采取上述四项配套的深井钻井技术措施后,平均钻井速度可提高5.84%~77.90%。本文阐述了螺杆加PDC钻头复合钻进技术及其应用效果。结果表明,该技术在大庆长垣地区钻井中可用于中深部地层的快速钻进,大倾角易斜地层中的防斜快打,定向井中造完斜后原钻具的直接稳斜钻进和深井、小井眼中的高效钻进,对提高机械钻速,缩短建井周期,节约钻井成本,加快勘探开发步伐具有重要意义。
[Abstract]:Deep well drilling technology is a symbol of the development level of drilling technology in a country. The level of deep well drilling technology in the United States and Europe has always been in the world's leading level. Great progress has been made in the use of single-well drill bits, and great progress has also been made in drilling equipment for deep wells. But compared with the advanced level in the world, PetroChina still has a big gap in the drilling level of complex deep wells. The problem of anti-slanting and straightening in deep formations and the problem of rapid drilling in deep hard formations are two major technical problems in deep well drilling and ultra-deep well drilling, which restrict deep wells. The research on rock mechanics of deep borehole, especially the study of drillability and anisotropy of rock in deep borehole, is to solve the problem of deep well drilling. This paper investigates the drilling conditions of deep wells and ultra-deep wells at home and abroad, analyzes the main technical problems existing in deep well drilling and ultra-deep well drilling, and the application of drilling rock mechanics in deep well and ultra deep well. The key technology of deep well and ultra-deep well drilling and the role of drilling rock mechanics in deep well drilling and ultra-deep well drilling are analyzed. The hole stabilization technology and well deviation control technology in deep well drilling and ultra-deep well drilling are analyzed. According to the geological characteristics of deep wells in the north of Songliao Basin, combined with the practice of deep well drilling in Daqing Oilfield in the past, the selection of drill bit and the combination of nozzles are put forward. The drilling practice of drilling tool combination design, drilling parameters optimization, drilling fluid system selection, etc., to improve drilling speed of 7. 7 deep wells shows that, after adopting the above four matching deep well drilling technical measures, The average drilling speed can be increased by 5.84% and 77.90%. In this paper, the combined drilling technology with screw and PDC bit and its application effect are described. The results show that the technology can be used for rapid drilling in the middle and deep formation in Daqing Changyuan area. To improve the mechanical drilling speed, shorten the construction period and save the drilling cost, the anti-slant and quick drilling in the formation with large dip angle, the direct stable drilling of the original drilling tool and the deep well drilling in the directional well, and the high efficiency drilling in the small hole, can improve the drilling speed, shorten the construction period, and save the drilling cost. It is of great significance to speed up the pace of exploration and development.
【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】：TE245
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本文编号：1644268