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本文重点介绍了一种自行研制的防喷型单向阀的结构设计、工作原理、技术特点以及在修井作业现场的应用情况。该工具是一种在井下作业起、下钻具时起到防喷作用的工具,能可靠的起到钻具内防喷的作用,当与自封封井器配合使用的时候还能起到套管防喷的作用,具有外形设计合理、结构简单紧凑、工作原理可行、性能安全可靠、使用寿命长等特点。它的研制成功,为提高油、水井的大修、措施作业效率提供了新的途径和方法,而且大大降低了作业过程中的安全风险,在现场应用后取得了较好的效果。
This article focuses on the structure design, working principle, technical characteristics and application of a self-developed blowout preventer valve in the field of workover. The utility model is a tool that plays a role of anti-blowout when working downhole and downhole tools, and can play a role of blowout preventer inside the drilling tool reliably, and can also play the role of a sleeve when used together with a self-sealing and blowout preventer The role of anti-spray tube, with a reasonable shape design, simple and compact structure, work principle feasible, safe and reliable performance, long service life and so on. Its successful development has provided a new way and method for improving the overhaul of oil and water wells and the efficiency of operation. Moreover, it has greatly reduced the safety risks in operation and achieved good results after the application in the field.