SELECTIVE WELL COMPLETION DEVICE Russian patent published in 2010 - IPC E21B43/14 E21B43/12 E21B34/06 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry and can be used for selective formation isolation in well completion. A selective well completion device comprises at least one adjusting sleeve valve with its body mounted on a pipe, at least one temperature-sensitive element, and a surface control and monitor unit connected with the valve and element through a drive line. The valve is opposite to a producing formation and connected therewith through collars in a well casing. A valve actuator is permanently connected with its sleeve and provided with at least two working parts made of a shape memory alloy, each of which is permanently or intermittently located in a coverage of an electric heating element, and each working part is connected with its one end to a support, and with another - to the sleeve of the sleeve valve; at least one working part of each sleeve valve is mounted above, and another - under the attached sleeve. Additionally, the device can contain a lifting gear and a shuttle whereon at least one heating element and a related thermocouple are provided.

EFFECT: enhanced device.

8 cl, 4 dwg