Cementing fracturing toe slip sleeve

Abstract

The utility model relates to the technical field of toe end sliding sleeve of well cementation fracturing, especially toe end sliding sleeve of well cementation fracturing. Including upper joint pipe, the bottom of upper joint pipe is provided with lower joint pipe, and the inner wall of the end of upper joint pipe and lower joint pipe away from each other is all provided with butt thread, the bottom of lower joint pipe arc surface is provided with injection hole, and the section of injection hole is vertical, and the inner wall of upper joint pipe and lower joint pipe is slidably connected with inner sliding sleeve, the bottom of inner sliding sleeve arc surface is provided with a plurality of fracturing holes, and adjusting device is arranged in the inner wall of upper joint pipe and lower joint pipe, and adjusting device includes built -in groove, and built -in groove is arranged in the inner wall surface of lower joint pipe, and the inner wall arc surface of built -in groove is slidably connected with the bottom arc surface of inner sliding sleeve, and the inner wall of lower joint pipe is provided with limiting slot, and the section of limiting slot is "L" shape. The toe end sliding sleeve of well cementation fracturing has the advantages that the fracturing toe end sliding sleeve is conveniently adjusted, limited and protected.

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