METHOD FOR PERFORMING THERMO-CHEMICAL PROCESSING OF FACE ZONE Russian patent published in 2007 - IPC E21B43/27 

FIELD: technology for restoring filtration properties of face zones of oil and gas wells, disrupted during operations, with usage of hydro-reacting metals.

SUBSTANCE: method includes delivering hydro-reacting metals - sodium in aluminum barrels, placed within a container, and initiating process of interaction of hydro-reacting metals and water solutions in perforation interval. In accordance to invention, in oil and gas extractive well with emulsified slurry in reaction zone from intensive destruction of asphalt-resin and paraffin-hydrate compounds the processing is performed in repeating cycles mode: delivery of sodium and aluminum in hermetic container to well face, initiation of reaction of these metals, aging, lifting of container with interruption of cycles by washing the face with water with prevented creation of "water in oil" type of emulsion in reaction space. As container for delivering hydro-reacting metals, body of cumulative geophysical perforator is used, which has detonator and apertures on side surface, closed with seals with their possible release by explosion of detonator. Whether it is required to wash the face is decided during next lifting of container on basis of fullness of aluminum barrels dissolution.

EFFECT: lower costs, increased processing efficiency, ensured safety and control of processing during realization of method.

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