FIELD: mining.
SUBSTANCE: method of secondary exposing for oil and gas producing formations consists in perforation of wall of flow string at level of producing formation through holes plugged with material which is subject to removal. As subject to removal material there is used a material with melting temperature below the temperature of melting of flow string material. Perforation of the wall of the flow string is performed by means of heating flow string at the level of producing formation to the temperature of the said material melting. Flow string heating is carried out with a well heater or by temperature of exposed formation.
EFFECT: upgraded efficiency of method due to reduced time for formation exposing and elimination of negative chemical effect of acid onto flow string in bottomhole zone.
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| Title | Year | Author | Number |
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RU2793351C1 |
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RU2625126C1 |
