PREPARATION SYSTEM OF THE FLOW COLUMN TO THE PROCESS STEPS OF FORMATION STIMULATION, METHOD OF PREPARATION AND METHOD OF FORMATION STIMULATION Russian patent published in 2017 - IPC E21B17/01 E21B31/00 

FIELD: oil and gas industry.

SUBSTANCE: preparation system of the flow column (FC) to the process steps of the formation stimulation contains a process FC, mounted in the borehole, flow head equipment, mounted in the borehole mouth and connected along the fluid medium with FC, wellhead connections, located on the borehole mouth connected along the fluid medium with the flow head equipment, the measuring tools, connected to the wellhead connections and adapted to measure the fluid parameters, passing through the wellhead connections, the pumping unit, located at the borehole mouth and connected along the fluid medium with the wellhead connections and also the device for FC pressuring, fixed below at FC and containing the seat pocket, shut-off device and the shut-off device borehole catcher. The shut-off device borehole catcher contains the cylindrical body, the fixed lift stop of the shut-off device, mounted in the cylindrical housing and positioned in the upper part of the catcher, the locking insert, which is substantially cylindrical in shape, mounted in the cylindrical housing and located at the lower part of the catcher, and the retaining element, installed rotatably in the fixing insert and adapted to retain the shut-off device and thus ensure the fluid medium flow. Also the method of the FC preparing to the process steps of the formation stimulation on the productive formation using the proposed system.

EFFECT: increased efficiency of work on the FC preparation to the process steps of the FC formation stimulation.

20 cl, 5 dwg