WAY OF HYDRAULIC SEAM FRACTURE BY MEANS OF ULTRA LOW MASS PROPPANT SUSPENDED MIXTURES AND GAS STREAMS Russian patent published in 2017 - IPC E21B43/267 C09K8/86 C09K8/94 

FIELD: mining engineering.

SUBSTANCE: way of hydraulic ground formation fracture is offered. It includes a proppant phase force into a ground formation. This phase comprises a fine-grained intimate foam which contains a higher viscosity aqueous fluid with an ultra-low mass proppant - ULMP which is suspended in the mentioned fluid, and a gaseous medium which makes at least about 85% of the volume concentration of the gaseous medium and aqueous fluid in the fine-grained intimate foam combination, where the bubble diameter is less than or equal to 0.18 mm in at least 70% of fine-grained intimate foam gas volume, and a proppant phase is forced into a ground formation under a pressure that is sufficient for formation and extension of a fracture. A way of hydraulic ground formation fracture comprises phases, where: one injects a proppant phase into a formation, where this phase comprises a fine-grained intimate foam in which at least 70% of bubble gas volume in a fine-grained intimate foam have the diameter that is less than or equal to 0.18 mm. The noted foam is obtained by ULMP suspending in the higher viscosity aqueous fluid and then by the mentioned fluid and gaseous medium combination where the gaseous medium makes at least about 85% of the volume concentration of the gaseous medium and aqueous fluid in the fine-grained intimate foam combination. Then one forms and extends a fracture in a ground formation. There is also a way of hydraulic ground formation fracture where one injects a proppant phase into a fracture and where a proppant phase corresponds to a fine-grained foam that comprises a gaseous medium and a ULMP which carries an apparent gravity that is less than or equal to 2.25 and is suspended in the aqueous-based system with the higher viscosity, where the proppant phase gaseous medium makes more than 90% of a fluid in the proppant phase volume concentration. The invention is developed in the dependent claims.

EFFECT: hydraulic fracture efficiency upgrading.

26 cl, 2 ex, 1 tbl, 2 dwg