井口结构

Shaft mouth structure

Abstract

The utility model provides a shaft mouth structure which comprises a blowout control box, a sealing device, a middle-high pressure gas injection device and a well pipe. The middle-high pressure gas injection device comprises a first communication pipe and a first gas injection pipe which is communicated with the first communication pipe. The blowout control box, the sealing device, the first communication device and the well pipe are sequentially arranged and communicated with one another. A continuous oil pipe enters from the blowout control box and then enters the well pipe sequentially through the sealing device and the first communication pipe. The first gas injection pipe is communicated with an outer gasifying agent source through a middle-high pressure gasifying agent pipeline. A middle-high pressure gasifying agent enters the first communication pipe through the first gas injection pipe and then enters the well pipe. The shaft mouth structure is reasonable in design and simple in structure, the down-pass operation of the continuous oil pipe can be achieved, and it is guaranteed that the whole operation process is simple, convenient and safe.
本实用新型提供了一种井口结构,包括:防喷盒、密封装置、中高压注气装置和井管;所述中高压注气装置包括第一连通管和第一注气管;所述第一注气管与所述第一连通管贯通;所述防喷盒、所述密封装置、所述第一连通管和所述井管,依次排列并连通;连续油管从所述防喷盒进入并依次通过所述密封装置、所述第一连通管进入所述井管中;所述第一注气管通过中高压气化剂管路与外部气化剂源连通,中高压气化剂通过所述第一注气管进入所述第一连通管,进而进入所述井管中。其设计合理、结构简单,既能完成连续油管下放操作,并且保证整个操作过程简单、方便、安全。

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    WO-2016101681-A1June 30, 2016新奥气化采煤有限公司Structure à tête de puits