Downhole adjustable inflow control device for use in a subterranean well

摘要

A well system can include an inflow control device which resists flow into a tubular string. A selection from among multiple different flow resistances through the inflow control device can be performed in response to pressure manipulation. An inflow control device can include a piston which is displaceable to at least two positions. Flow through the inflow control device is permitted at a certain flow resistance when the piston is at one position, and flow through the inflow control device is permitted at a greater flow resistance when the piston is at another position. Fluid which flows through the inflow control device can be constrained to flow through an increased number of flow restrictors in response to displacement of the piston from the first to the second position.

主权项

1. A well system, comprising:
a flow control device including a first flow restrictor and a second flow restrictor, wherein the first flow restrictor restricts flow of a fluid between an interior and an exterior of a tubular string, whereby fluid can flow into the interior of the tubular string through the first flow restrictor without flowing through the second flow restrictor, and the second flow restrictor is placed in series with the first flow restrictor in response to a pressure manipulation, whereby the fluid is constrained to flow successively through both the first and second flow restrictors.