FIELD: mining industry, particularly for production well development and reworking in the case of well production rate decrease as a result of well bore zone mudding with asphalt-tar-paraffin deposits and mechanical impurities.
SUBSTANCE: method involves treating well bore zone by providing depression pressure difference between well bore zone and well interior. To provide above pressure difference periodical pressure pulses are created as moving shock wave in well bore zone. The chock wave is formed by periodical well interior opening at well head for pressurized well fluid discharge and well interior closing when well fluid reaches sufficient movement speed. Necessary pressure is maintained in well interior by establishing periodical communication between well head and pressurized liquid source.
EFFECT: provision of sufficient internal well pressure during shock-wave well treatment.
1 dwg
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