FIELD: oil and gas industry.
SUBSTANCE: method of efficiency and control estimation for carbonate formation acid treatment involves core sampling and preparation of core samples. Chemical agent is pumped through core samples. Polished specimens are taken from the side of chemical agent input and output. At that before chemical agent pumping through prepared core samples the samples are surveyed at scanning electron microscope. After chemical agent pumping core samples are tested by CT-scanner. Images are compared and the most effective forms of solution channels are detected. Thereafter efficiency of acid treatment is estimated by calculating impact factor by computer processing of images; at minimum impact coefficient summary is made about the biggest efficiency of acid treatment.
EFFECT: improving efficiency of influence on bottom-hole zone of productive stratum.
15 dwg, 3 ex
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