UNDERGROUND WELL FRACTURING METHODS Russian patent published in 2009 - IPC E21B43/267 

Abstract RU 2346152 C2

FIELD: oil and gas industry.

SUBSTANCE: invention refers to methods of forming propped fractures in parts of underground formations. Propped fracture forming method consists in preparing a fracture which has area located far from the well, and area located close to the well, distributing particles of the first propping filler, which are at least partially covered with adhesive, and distributing particles of the second propping filler, which have larger size on sieve scale than particles of the first propping filler, in the fracture area located close to the well in order to form high-porosity propped section in the area located close to the well. Production interval stimulation method consists in hydraulic fracturing in order to form a fracture having area located far from the well and area located close to the well, distributing particles of the first propping filler, which are at least partially covered with adhesive, in fracture area located far from the well, and distributing particles of the above second propping filler in fracture area located close to the well in order to form a high-porosity propping section in area located close to the well.

EFFECT: improving fracture forming efficiency.

16 cl, 1 tbl

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RU 2 346 152 C2

Authors

Ngujen Filip D.

Dates

2009-02-10Published

2006-01-13Filed