连续油管导斜器开窗工艺技术研究

发布时间：2018-01-30 03:31

本文关键词： 连续油管一体式开窗工具开窗工艺　出处：《长江大学》2015年硕士论文　论文类型：学位论文

【摘要】：连续油管钻井技术(Coiled Tubing Drilling—CTD)是20世纪末期在国际石油行业兴起的一种非常热门的新的钻井技术。这种新的钻井技术采用连续长度的油管来代替常规的钻杆,运用在井下钻具组合中增加一个螺杆的方式取代常规钻井中转盘的作用。连续油管本身具有无接头、无变径、能弯曲,能连续起下、能动态密封、强度大、承压高、体积小和运装方便等特点。在钻进过程中不需要停泵接单根,可实现钻井液的连续循环,提高了起下钻速度和作业的安全性,减少了起下钻时间,缩短了钻井周期。特别是对老油田进行重入加深或开窗侧钻时,不仅可以大幅度节约钻井成本,同时还可以发现、开采新的储量,有助于老油田稳产增产,提高最终采收率,增加油田效益。目前,世界上许多油田都已进入开发后期,我国的大部分油田也进入了高含水期,产量下降,有相当部分低渗透油气藏和特殊油气藏还未投入开发,或者还未充分发挥应有的作用,所以对这些油田进行挖潜与再开发是关键。定向井在油田开发战略上占有很重要的地位。从一口老井内侧钻开窗,钻出新的井眼,是定向钻井的一项应用。运用连续油管进行老井套管内开窗侧钻技术无疑是最适合解决上述问题的技术之一。文章结合国家科技重大专项项目36《煤层气钻井工程技术与装备研制(二期)》中的课题6“连续油管装备与应用技术”,针对连续油管开窗侧钻工艺进行研究。研究成果可用于指导现场的连续油管开窗侧钻试验,并初步形成适应于我国的连续油管开窗侧钻工艺的研究报告。本文主要从以下几个方面进行研究：(1)调研国外连续油管地面设备和井下开窗工具,加深对连续油管设备的认识,充分了解连续油管设备的优缺点,便于在连续油管作业时选配合适的井下工具。(2)结合试验井的实际情况和收集到的连续油管一体式开窗工具,推荐2套开窗工具组合,并对下部钻具组合进行了强度校核。(3)将Jiazhi模型与金属工艺学中的平面磨铣模型结合起来,在理论上对磨铣参数进行了公式推导。以试验井的基本数据为例,计算出开窗过程中的循环压耗。(4)以现场连续油管钻桥塞的作业规范为指导,结合常规钻杆侧钻开窗的施工工艺和连续油管特殊的施工程序,拟定出连续油管开窗施工工艺的作业规范。
[Abstract]:Coiled Tubing Drilling-CTD). In the end of 20th century, a very popular new drilling technology was developed in the international petroleum industry. This new drilling technology uses continuous length tubing instead of conventional drilling pipe. The use of a screw in the downhole drilling assembly to replace the role of the rotary disc in conventional drilling. The continuous tubing itself has no joint, no diameter change, can bend, can continuously rise, can be dynamically sealed, and has high strength. The characteristics of high pressure, small volume, convenient operation and so on. In the drilling process, there is no need to stop the pump to connect a single branch, which can realize the continuous circulation of drilling fluid, improve the drilling speed and the safety of operation, and reduce the down drilling time. The drilling cycle is shortened, especially for the old oil fields to deepen re-entry or window side drilling, not only can greatly save drilling costs, but also can be found that the exploitation of new reserves is conducive to the old oilfield production and production. At present, many oilfields in the world have entered the late stage of development, and most of the oilfields in our country have also entered the period of high water cut, and the output has decreased. A considerable number of low permeability reservoirs and special reservoirs have not been developed, or have not fully played their due role. Therefore, tapping and redeveloping these oilfields is the key. Directional wells play an important role in the development strategy of oil fields. The windows are drilled from the inner side of an old well and new boreholes are drilled. It is an application of directional drilling. It is undoubtedly one of the most suitable techniques to solve the above problems by using continuous tubing to open windows and sidetracking in the casing of old wells. The article combines with the important national science and technology project 36 < coalbed methane drilling. Development of Engineering Technology and equipment (. Project 6 "continuous tubing equipment and application technology". The research results can be used to guide the field test of coiled tubing side drilling. And the preliminary formation of continuous tubing sidetracking technology suitable for China's research report. This paper mainly from the following several aspects of research on the following aspects of continuous tubing surface equipment and downhole window opening tools. To deepen the understanding of continuous tubing equipment, fully understand the advantages and disadvantages of continuous tubing equipment. It is convenient to select suitable downhole tools in continuous tubing operation. 2 sets of window opening tools are recommended in combination with the actual conditions of test wells and the collection of integrated window opening tools for continuous tubing. The Jiazhi model is combined with the plane grinding and milling model in metal technology. The formula of grinding and milling parameters is deduced theoretically. Taking the basic data of the test well as an example, the circulating pressure consumption in the process of window opening is calculated, which is guided by the operation code of continuous tubing drilling bridge plug in the field. Combined with the construction technology of conventional drilling pipe side drilling and special construction procedure of continuous tubing, the operation standard of continuous tubing window opening construction technology is worked out.
【学位授予单位】：长江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE92

【相似文献】