FIELD: oil and gas industry.
SUBSTANCE: method involves the following sequence of actions: after continuous well operation cycle during at least 30 days, a long-term (at least 3 days) level recovery curve is recorded, as per which current productivity of formations is evaluated; then, on the basis of comparison of current productivity with the initial one, it is determined, how much the skin factor has been changed. Besides, in order to obtain continuous time variation curves of pressure and skin factor, repeated interpretation of pressure and flow rate change curves is performed during the whole time period of observations since the well has been started up.
EFFECT: improving reliable determination of skin factor reduction points for opened hydraulic formation fracturing of low-permeable formation.
2 dwg
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