Patent ID: 8403061
Filing Date: 2013-03-26
Classification: E21B,Y10T

Abstract:
1. A method of making a flow control device for controlling flow of fluid between a formation and a wellbore, comprising: providing a member suitable for placement in a wellbore for receiving formation fluid; selecting a geometry for a flow-through region configured to substantially increase value of a selected parameter relating to the flow-through region when a selected property of the formation fluid is in a first range and maintain a substantially constant pressure drop across the flow-through region when the selected property of the fluid is in a second range; and forming the flow-through region comprising stages on the member to provide the flow control device, wherein each stage of the flow-through region comprises an inlet port and an outlet port and each stage defines a single tortuous path wherein the single tortuous path flows through each of the stages of the flow-through region.