【作者】 王宏坤；

【导师】 尹洪军； 于振东；

【作者基本信息】 大庆石油学院 ， 石油与天然气工程， 2007， 硕士

【摘要】 单层压裂排液一体化工艺技术能实现单层不动管柱压裂及排液求产，但还不能实现一次管柱分层压裂并直接排液求产。而目前大庆油田勘探对象大多为低渗透油层，它的特点是单层厚度较小、层数较多，需分层压裂，而与之配套的分层压裂工艺技术需上提管柱，进行压裂，压裂后需起出压裂管柱，再下入排液求产管柱，存在排液不及时、压裂液在地层中滞留时间长污染地层，放喷计量不准，劳动强度大，工作环境恶劣，达不到HSE施工标准要求等问题。针对上述问题，提出了“不动管柱两层压裂及排液一体化技术研究”课题，通过模拟井的试验和现场试验，证明该工艺的可行性和可靠性。在进行现场施工过程中，也验证了该工艺的可行性，所开发的工具及管柱结构不仅能够满足不动管柱压裂两层的施工，而且也很好的解决了选层压裂的问题，并且有效的解决了压裂施工过程中的砂卡问题。更多还原

【Abstract】 The integral technology of single layer fracturing and unloading liquid can fulfill singlelayer fracturing without pulling string and acquire out flowing production, but this cannotachieve separate layer fracturing with primary string and acquire out flowing productiondirectly. At present, the most objectives of DaQing oilfield exploration is low permeable oillayer, its features contain miner thickness of single layer, more layers, and demands separatelayer fracturing, but the technology of separate layer fracturing integrating these conditionsdemands rising string, running fracturing, pulling out fracturing string, and running the stringof out flowing production after fracturing. So, there are some problems, unloading liquid isnot on time, the retention time is long when fracturing fluid exists layer, pollute layer, themetering of blow out is inaccuracy, operation intension is great, working environment isodious, and can not catch up the requirement of HSE operational criterion. In view ofabove-mentioned problems, given the theme "the study on integral technology of double layerfracturing without pulling string and unloading liquid", and prove this technologicalfeasibility and reliability through the tests of simulator well and field. During the process offield construction, also verifies this technological feasibility. The development tools and stringconfiguration not only can meet the construction of double layer fracturing without pullingstring, but also solve the problem of selective layer fracturing well, and also solve sanding invalidly during fracturing.更多还原