DEVICE FOR INTERVAL HYDRAULIC FRACTURING Russian patent published in 2022 - IPC E21B43/26 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in the mining of mineral deposits by geotechnological methods. In addition, the invention makes it possible to simultaneously treat with a liquid with the same properties the same sections of the rock mass, which lie at a considerable distance from each other. The device for interval hydraulic fracturing includes a body with openings covered with elastic cuffs, jumpers fixed inside the body, dividing it into sections isolated from each other, and individual sectional supply pipes installed in the openings of the jumpers. At the same time, the body is made in the form of a bottom and intermediate blocks interconnected by detachable connections, the individual sectional supply pipes are provided with protrusions and are installed in the intermediate blocks with the possibility of rotation around their axis, while holes are made in the corresponding sections in their walls, grooves are made in the jumpers , in which elastic seals are installed and protrusions of individual sectional supply pipes are located, moreover, individual sectional supply pipes of the corresponding sections of individual blocks are interconnected by detachable connections, and the elastic cuffs are made double-petal with a stepped shape of the contact surfaces of the petals.

EFFECT: expansion of technological capabilities by providing selective treatment with a liquid with desired properties and parameters of various sections of the rock mass.

6 cl, 9 dwg