DEVICE AND METHOD FOR DOWNHOLE DIRECTIONAL HYDRAULIC FRACTURING ROOF CUTTING AND PRESSURE RELIEF

Abstract

Disclosed in this disclosure are a device and method for downhole directional hydraulic fracturing roof cutting and pressure relief. The device includes: a plurality of drilling rod members, sequentially connected to form a drilling main rod; a drilling bit mechanism, detachably mounted at a front end portion of a frontmost drilling rod member by using an adapter; and a drilling device, capable of driving the drilling main rod to rotate and advance forward, thereby driving the drilling bit mechanism to perform a drilling operation. In the device of this disclosure, injection driving mechanisms simultaneously drive a plunger to complete the following actions by using hydraulic pressure of the same path of fracturing fluid: 1. pushing wall-gripping assemblies to implement mechanical anchoring; and 2. automatically starting fracturing fluid channels flowing toward jet sprinklers after anchoring.

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