| 摘要 |
This invention relates to the oil and gas industry and to exploration and production of water resources, in particularly, for stimulation of fluid fl ow to the well, e.g., for higher oil production, productivity index, and rec overy factor. The disclosed device and method can be used for higher permeab ility of the pay zone due to creation of a network of microcracks in the bot tomhole formation zone and facilitates to increase the flow of oil, or other fluids, from the reservoir to the well. Generation of cyclic pressure pulse s with varied amplitude and time parameters and proper localization of pulse s in space through mechanism of convective combustion provides a "soft" impa ct upon the wellbore without risk of damage or formation consolidation; the said impact is achieved by using a device which is a downhole cyclic pressur e generator operating by a consecutive combustion of layers of compositions having different combustion rates. The compositions are made on the basis of loose-paked solid fuel, solid oxidizer, and functional additive of a liquid hydrocarbon.
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