METHOD FOR WELL BOTTOM ZONE TREATMENT

METHOD FOR WELL BOTTOM ZONE TREATMENT

FIELD: oil production industry, particularly to develop and operate wells, to perform well stimulation for well reworking and highly contaminated well injectivity recovery. ^ SUBSTANCE: method involves lowering assembly connected to flow string within well perforation interval, wherein the assembly...

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Hauptverfasser: TOLSTOGUZOV VIKTOR ALEKSANDROVICH, SALIKHOV AJRAT DUFAROVICH, VAFIN RIF VAKILOVICH, MARDANOV MARSEL' SHAGINUROVICH, EGOROV ANDREJ FEDOROVICH, GIMAEV IREK MUDARISOVICH, LYKOV VLADIMIR IVANOVICH
Format: Patent
Sprache:eng ; rus
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator TOLSTOGUZOV VIKTOR ALEKSANDROVICH
SALIKHOV AJRAT DUFAROVICH
VAFIN RIF VAKILOVICH
MARDANOV MARSEL' SHAGINUROVICH
EGOROV ANDREJ FEDOROVICH
GIMAEV IREK MUDARISOVICH
LYKOV VLADIMIR IVANOVICH
description FIELD: oil production industry, particularly to develop and operate wells, to perform well stimulation for well reworking and highly contaminated well injectivity recovery. ^ SUBSTANCE: method involves lowering assembly connected to flow string within well perforation interval, wherein the assembly comprises packer and paired rod pump including upper and lower bodies connected with each other by means or perforated pipe, rod stem with piston and ultrasound generator; separating tube space over perforation interval by means of packer; applying action of elastic ultrasonic vibrations in active technological liquid and acid solution on well bottom zone; removing reaction products along with washing-out treatment products; applying ultrasound action on formation; providing alternating liquid flow within perforation interval and light depression pulses. The ultrasound generator is mechanical generator, which is actuated by liquid flow passing through it in one direction. Ultrasound is applied along with liquid pumping into flow string at the forth pump operation stage. ^ EFFECT: increased efficiency of well and well bottom zone cleaning, improved output, simplified technology and decreased costs for well bottom treatment. ^ 1 ex, 2 dwg
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title METHOD FOR WELL BOTTOM ZONE TREATMENT
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