Patent ID: 7753127

Claim:
A method of optimizing of oil production from an oil well comprising steps as follows: (a) determine a dependence of the oil flow rate on the bottomhole pressure in said well and create an inflow-pressure relationship curve; (b) install a bottomhole tool at the bottom of said well, said tool incorporating a multi-stage_fluid resistor with a movable needle, said resistor and said needle having respective predefined geometries, whereby a position of said needle within said resistor in combination with said geometries defining a fluid resistance of oil flow through said fluid resistor and a bottomhole pressure in said well, said needle being driven to said position by a driving means controlled from a surface; (c) defining a lift curve and intersection thereof with said Inflow-Pressure Relationship curve by adjusting the bottomhole pressure from the surface; and (d) creating a desired point of operation of said well by shifting the intersection between said lift curve and said Inflow-Pressure Relationship curve to a desired location via moving of said needle by said driving means.