CERAMIC RUPTURE DOMED MEMBRANE FOR PRESSURE CONTROL Russian patent published in 2019 - IPC E21B34/10 F16K17/16 

FIELD: soil or rock drilling; mining.

SUBSTANCE: disclosed is a single-use pipeline shutter actuated by pressure, selectively withstanding fluid pressure from one side of the device until remote release of the gate, wherein the device is a fragile dome-shaped membrane configured to withstand pressure of fluids on one side, but rupture after applying a higher pressure on its other side, which provides a mechanism for isolation of well fluid medium under high pressure in part of well during operations for period of time, selected by operator, and then removes insulation by remote destruction of breaking dome-shaped membrane by means of application of additional pressure of fluid medium or other forces from surface. Frangible dome-shaped membrane has elements in at least one surface for direction and control of its destruction to provide fragments of controlled sizes and shapes and predicted opening for creation of pipe with minimum obstacles after destruction.

EFFECT: technical result is to increase the efficiency of the device.

11 cl, 4 dwg