925results about How to "Increase gas production" patented technology

A coal-bed gas well electric pulse blockage releasing and permeation enhancing method is suitable for high-efficient mining of coal-bed gas wells. According to the blockage releasing and permeation enhancing method, a positive electrode coal-bed gas well shaft and a negative electrode coal-bed gas well shaft are constructed from the ground to a coal bed; cracks in the coal bed are closed gradually or blocked by granular impurities along with coal bed gas extraction after hydrofracturing, so that the gas yield is reduced; at the moment, a conductive ion solution is injected into the positive electrode coal-bed gas well shaft, and the portion, between the positive electrode coal-bed gas well shaft and the negative electrode coal-bed gas well shaft, of the coal bed is filled with the conductive ion solution; then a positive electrode and a negative electrode are put downwards to the coal bed permeation forecast increasing portions in the positive electrode coal-bed gas well shaft and the negative electrode coal-bed gas well shaft correspondingly; the portion, between the positive electrode and the negative electrode and filled with the conductive ion solution, of the coal bed is broken down through discharging of high voltage electropulses, great energy forms impact waves to act on the coal bed, the closed cracks in the coal bed are opened again and extend, the granules blocking the cracks are removed, the number of the cracks in the coal bed is effectively increased, and crack connectivity is improved.