FIELD: oil-and-gas production.
SUBSTANCE: invention related to multi layered oil fields development and can be used in oil-and-gas industry. Essence of the invention in method of hydraulic fracturing execution, performed selectively in area of low permeability layers, not all the interlayer at one time. Pick up highly permeable layer with permeability three times greater then average one, called "super collector". And do not execute its perforation on that stage. After planned oil reserves developed perform highly permeable layer perforation and execute its production. Execute a hole with vertical entering into production facility to create maximum perforation pressure gradient and to create optimal hydraulic fracturing crack. At the same time execute hydraulic perforation in interval with low permeability in injection area of well.To create a vertical filtration between highly permeable interlayer-non perforated and low permeable create side horizontal hole in low permeable area with the following gradual hydraulic fracturing.
EFFECT: decrease in unevenness of multi layered field development and maximal fluid withdrawal.
2 cl, 4 dwg
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Authors
Dates
2009-11-27—Published
2007-08-23—Filed