Abstract: A method of creating and finishing perforations in a hydrocarbon well, starting by shooting a high velocity jet of metal particles into the well wall, thereby creating a perforation in the well wall. After this, a gas blast is pushed into the perforation, for a blast time duration, the gas blast creating an increasing pressure at the perforation, until a maximum is reached, the pressure of the gas then undergoing a period of rapid decline to a level of less than 50% of the maximum pressure. The period of rapid decline takes less than one-sixth of the blast time duration. Accordingly, the time pattern of speed and pressure of the gas blast results in a higher maximum pressure at the perforation, resulting in localized fracturing, emanating from the perforation, which permits a greater flow of hydrocarbons into the perforation and from the perforation into the well.

Abstract: A low profile high energy gas fracturing device, comprising a closed steel tube having a uniform wall thickness, except for having thinned areas that are designed to rupture when subjected to pressure greater than a predetermined level. Propellant is packed into the said steel tube sufficient to create high pressure above said predetermined level, when ignited. Finally, an ignition mechanism passes through said tube, to ignite the propellant.