A large tail pipe side tracking well cementing technology

Abstract

The present application relates to the technical field of petroleum drilling engineering, in particular to a large tail pipe side drilling well cementing technology, comprising the following steps: well wall cleaning, lowering the open hole positioning device, whipstock device connection, well wall windowing, drilling device operation, pipe string insertion and grouting, inclined pipe directional drilling and vertical opening and whipstock removal. The present application can fully ream the original well hole, effectively clean it, and through the action of the whipstock device, the well wall windowing assembly and the inclined drilling assembly can more accurately realize the side drilling operation, the pipe extending into the side well can be fully fixed and the pipe penetration can be ensured, which is helpful for subsequent use. At the same time, the original well hole can be quickly drilled and the corresponding parts can be quickly removed, so that the workers can install the corresponding equipment.

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