公开(公告)号：US20190003284A1

公开(公告)日：2019-01-03

申请号：US15639597

申请日：2017-06-30

Applicant: BAKER HUGHES INCORPORATED

Inventor： Stephen Coulston

IPC: E21B34/14 ,  E21B47/12

Abstract: An adjustable inflow control device features a mechanically rotatable sleeve that advances or retreats axially when rotated in opposed directions to cover or uncover a labyrinth flow path from an inlet to an outlet. When used for inflow the outlet is into a tubular string to a surface location. The more the sleeve is retracted away from the labyrinth path the less resistance to flow is offered and vice versa. Another way to mechanically alter the flow resistance is to have an outer housing with a spiral groove and an axially movable inner mandrel with another spiral groove. The mandrel can be axially advanced with rotation when connected with a thread. Advancing the mandrel so that there is more overlap between the spiral patterns increases resistance to a give flow rate and vice versa. A gap between the mandrel and housing allows the mandrel to rotate and translate.