Autonomous inflow control device having a surface coating

摘要

An autonomous inflow control system for use downhole comprises a flow ratio control system comprising one or more fluid inlets, and a pathway dependent resistance system comprising a vortex chamber. The one or more fluid inlets provide fluid communication between the flow ratio control system and the pathway dependent resistance system, and at least one of the one or more fluid inlets comprises a super hydrophobic surface.

主权项

1. An autonomous flow ratio control system for use downhole comprising:
a plurality of fluid inlets, each comprising a super hydrophobic surface; a vortex chamber, wherein each fluid inlet is directly connected to the vortex chamber; a first leading passageway fluidly connected to a first fluid inlet and a second fluid inlet, wherein the first fluid inlet is connected to the vortex chamber at a first angle, and wherein the second fluid inlet is connected to the vortex chamber at a second angle; and a second leading passageway fluidly connected to a third fluid inlet and a fourth fluid inlet, wherein the third fluid inlet is connected to the vortex chamber at a third angle, and wherein the fourth fluid inlet is connected to the vortex chamber at a fourth angle; wherein the vortex chamber is disposed between the first and second leading passageways.