FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, to the field of well research – a method for selecting conditioned samples of produced water with modern MIC devices (cable plasters testers) for further study of the physicochemical properties of water and the use of the data obtained in the calculation of hydrocarbon reserves (hydrocarbon raw materials). For the implementation of the proposed method, the required module of the MIC device is selected depending on the geological conditions for sampling, the zone of penetration of drilling mud filtrate (PBS) into the formation is estimated, the required volume is calculated and the time of pumping fluid from the reservoir to obtain a standard sample of produced water, control pumping parameters with an assessment of the degree of contamination of the sample online using modules for in-depth analysis of the fluid of the MIC devices, preserving the sample during transportation to the laboratory. Method is also characterized by the fact that before taking a conditioned sample, it is necessary to clean the wellbore zone from penetration of drilling mud filtrate, after cleaning which to take a clean sample of formation water with PBS content not exceeding 5 % and preserve all the initial properties of water during its transportation to the laboratory.
EFFECT: technical result consists in increase the efficiency and optimization of exploration, reduce the time and financial costs of their implementation by eliminating the need to test the aquifer of the reservoir in a cased well column.
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