Method for improving shale gas well recovery ratio on basis of air knocking
A shale gas well and recovery technology, which is applied in the direction of production fluid, earth drilling, wellbore/well components, etc., can solve problems such as difficult construction, complicated process, and non-compliance with environmental protection requirements, so as to improve the permeability of shale , Simple equipment process and controllable knock energy
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[0027] Through a series of pipelines, the high-pressure air in the ground-mounted high-pressure air tank reaches the downhole high-pressure air gun. According to a series of instructions issued by the ground controller, the high-pressure air gun is quickly deflated to produce high-pressure air detonation underground to form a series of high-pressure air The impulse vibration acts on the shale. The impulse vibration is superimposed in the shale, creating conditions for swelling in the rock, causing the end of the micropores in the rock to continue to rupture and expand to the inside, accelerating the diffusion of shale gas in the shale layer. Desorption process to improve the recovery rate of shale gas wells. After the high-pressure air from the high-pressure air gun is released, high-pressure air blasts are generated in the well, and the effect of cracking caused by high-pressure air blasting in the operating well is monitored in real time by the geophone installed in the nearby...
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