MULTI-BOTTOMHOLE DESIGN FOR PRODUCTION IN PERMAFROST Russian patent published in 2010 - IPC E21B43/14 E21B7/04 

FIELD: oil-and-gas industry.

SUBSTANCE: invention includes main and lateral bottomholes, a production string A production string equipped under permafrost area with a wellhead shut off valve, in a interval over the top lateral bottomhole - production string thermal expansion bend, a flow valve, a pipe with a polished tip In a interval opposite to the side boreholes units installed, over it installed production parkers with landing nipples A snap shut connection installed under mini-windows In a interval between the lateral boreholes and under the bottom lateral bottomhole installed pipes with polished tips At that production string in permafrost area interval can be equipped with thermal insulated pipes, and in interval over the top lateral bottomhole - with inhibitor valve, and production string top section bypass hole diametre fits to low sections summary bypass holes.

EFFECT: well operation control, production consumption decrease, well operation production rate increase.

4 cl, 1 dwg