METHOD OF CHEMICAL REAGENT IMPULSIVE IMPLOSION BOTTOM HOLE TREATMENT, EQUIPMENT FOR ITS EXECUTION Russian patent published in 2009 - IPC E21B37/06 

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production, can be used for bottom hole zone - BHZ cleaning out of calmative materials, including deposits of asphalts, resins, and paraffins - DARP, also for repairing BHZ collector properties during wells development, recovery efficiency increase, including production wells in complicated geophysical conditions. Method of chemical reagent impulsive implosion bottom hole zone - BHZ treatment, includes pumping into BHZ active reagent fluid media through hole clearance - hydrocarbon dissolver with adding of 0.05-0.1 wt % SAS, overflushing the media with killing fluid in tubing string during depressive-repressive treatment, after mentioned above active media riches reservoir top - pumping it into BHZ with alternated depressive-repressive treatment, then multiply repeated implosion treatment with created passive media withdrawal out of BHZ, which consists of asphalts, resins, and paraffins alteration products and other calmative materials, till previously pumped in active media volume disposed and the following depressive-repressive-impulse BHZ treatment with pumping into hole clearance killing fluid as a active media with adding 0.1 -2.0 wt % of water-repellent SAS for production well and hydrophilic SAS for injection well.

EFFECT: oil and gas condensate bottom hole zone recovery and productivity factor and initial permeability increase, well injection capacity increase for injection wells due to water-oil emulsion breaking down, noncoherent water withdrawal, dissolving and peptisation of deposits of asphalts, resins, and paraffins - DARP, water-repelling and hydrophing of the first space simultaneously decreasing contaminating particles excess into reservoir with gradual chemical treatment and vibration - wave treatment which provides optimal figures of reservoir depression and repression.

1 ex, 1 dwg