Patent ID: 7559375
Filing Date: 2009-07-14
Classification: E21B

Abstract:
1. An arrangement for regulating inflow of fluids from an underground reservoir to a well, the arrangement comprising: an elongated base pipe; an impermeable section of housing that encircles the base pipe; wherein the base pipe and section of housing together define a cavity through which reservoir fluids can flow; an inlet proximate a first end of the cavity and configured to receive inflow of reservoir fluids; at least one through-going wall opening in the base pipe proximate a second end of the cavity; wherein the cavity, inlet and at least one through-going wall opening together define a flow path along which reservoir fluids flow from the underground reservoir to inside of the base pipe; a first removable and replaceable insert disposed in the flow path and configured to restrict flow into the base pipe, the first insert being shaped in the form of a type of flow restriction consisting of a nozzle; and a second removable and replaceable insert disposed in the flow path and configured to restrict flow into the base pipe, the second insert being shaped in the form of a type of flow restriction consisting of an orifice in the shape of a slit or hole.