METHOD FOR INSTALLATION OF PROFILE SHUTTER IN WELL Russian patent published in 2016 - IPC E21B29/10 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, namely to methods of insulation of trouble zones during well drilling with shutters from shaped tubes. Method involves lowering of shutter with straightening tool into absorption zone. Adapter of straightening tool has same shape as sections of shaped tubes of shutter, equipped with bottom shoe with spring-loaded check valve, and made greater than length of profile shutter and is inserted in it with possibility of sliding. Adapter of straightening tool is connected with shaped shutter with one or more shear elements. After tight pressing of sections of profile shutter pipes adapter of straightening tool is withdrawn from shutter, preliminary squeezing due to creation of depression inside adapter.

EFFECT: higher reliability of overlapping of absorption zones due to presence on external surface of shaped tubes of sealing elements, reliable connection of adapter of straightening tool with shaped tubes of shutter with shear elements, excluded probability of hook and jamming of drill pipes and assemblies tools at lowering-lifting operations.

1 cl, 3 dwg