滑套固井选择性压裂技术研究

发布时间：2018-02-25 23:30

本文关键词： 可开关滑套固井压裂开关工具固井胶塞　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：滑套固井分段压裂技术是指将滑套与套管柱串联,下放到预定位置,固井候凝后,依靠投球、拖动管柱等方式逐一打开滑套进行分段压裂。与裸眼分段压裂相比,滑套固井分层压裂具有完井管柱结构简单、井眼适应性强、适合大规模压裂等优势,对于非常规油气资源经济开发具有重要意义。本文针对国内外前人的一些研究成果,对不同的滑套固井分层压裂工艺技术进行了分析对比,选择全通径可开关滑套固井分层压裂工艺技术进行了专项研究。机械式可开关滑套内径与相连套管一致,依靠内管柱拖动开关工具开、关滑套;后期可通过开、关滑套,进行生产调节。与裸眼分段压裂和投球式滑套固井分段压裂相比,在后期生产调节方面优势明显。针对苏里格气田81/2″井眼下51/2″套管的直井设计了滑套固井分层完井压裂工艺。重点针对机械式可开关滑套多次开关的高压密封件寿命,滑套内筒的可靠锁定进行了设计和试验,通过组合密封和弯曲梁锁定机构解决了滑套密封和锁定难题。针对可开关滑套开展了开、关工艺研究,设计了机械式开关工具和液压式开关工具。针对滑套固井,设计了配套固井胶塞。围绕直井滑套固井分层压裂,开展了滑套校深,开关作业等工艺研究,形成了一套81/2″井眼的滑套固井分层压裂技术。进行了一口井的现场试验和分析总结。
[Abstract]:Slide casing cementing fracturing technology means that the sliding casing and casing string are connected in series to a predetermined position, and after cementing, the sliding casing is opened one by one by throwing ball and dragging pipe string to carry out fracturing. Sliding casing cementing and stratified fracturing has the advantages of simple completion string structure, strong hole adaptability, suitable for large-scale fracturing and so on, which is of great significance for the economic development of unconventional oil and gas resources. This paper analyzes and compares the different fracturing technology of sliding casing cementing, and selects the full diameter switchable slide casing cementing technology for special research. The mechanical switchable slide casing inner diameter is the same as the connected casing. Depending on the internal pipe string to drive the switch tool to open and close the slide sleeve; in the later stage, the production can be adjusted by opening and closing the slide sleeve. Compared with the open hole fracturing and the ball type slide casing cementing fracturing, The advantage of late production regulation is obvious. For the straight well of 81/2 "current 51/2" casing in Sulige Gas Field, a sliding casing cementing and completion fracturing technology is designed. The emphasis is on the life of high pressure seals with mechanical switchable sliding casing multiple switches. The reliable locking of sliding sleeve inner cylinder is designed and tested, and the problems of sliding sleeve seal and lock are solved by combination seal and bending beam locking mechanism. The mechanical switch tool and hydraulic switch tool are designed. For sliding casing cementing, a complete set of cementing rubber plug is designed. A set of 81/2 "slip casing cementing and stratified fracturing technology was formed, and the field test and analysis of a well were carried out.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357

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