公开(公告)号：US20180283136A1

公开(公告)日：2018-10-04

申请号：US15471898

申请日：2017-03-28

Applicant: Schlumberger Technology Corporation

Inventor： Srinivas Poluchalla ,  Virinchi Mallela

IPC: E21B34/10 ,  E21B33/12 ,  E21B43/14 ,  E21B43/08 ,  E21B49/08 ,  E21B47/12

CPC classification number: E21B34/10 ,  E21B43/14

Abstract: A controllable, multi-zone control system is provided for controlling the inflow of fluids into a completion, e.g. a lateral completion, at a plurality of well zones. According to an embodiment, flow control devices are distributed along the completion and a control module is positioned between the flow control devices, e.g. in a middle region of the completion. The control module is supplied with hydraulic actuating fluid and is electrically controllable to enable selective distribution of the hydraulic actuating fluid to selected flow control devices via a hydraulic actuating line and a hydraulic return line. The control module may be controlled via electric signals, thus controlling distribution of hydraulic actuating fluid under pressure to selected flow control devices so as to shift the selected flow control devices to a desired flow positions.

公开(公告)号：US20170342804A1

公开(公告)日：2017-11-30

申请号：US15167587

申请日：2016-05-27

Applicant: Schlumberger Technology Corporation

Inventor： Srinivas Poluchalla ,  Arun Arumugam

IPC: E21B34/14 ,  E21B34/00

CPC classification number: E21B34/14 ,  E21B23/00 ,  E21B34/101 ,  E21B2034/002

Abstract: A technique facilitates control over at least one flow control assembly position to control fluid with respect to a tubing string. The flow control assembly is disposed along the tubing string and comprises a flow control valve and a motor to control the operational position of the flow control valve. The flow control valve may comprise a plunger and a seal system to provide a seal between the plunger and a surrounding structure. Additionally, the flow control valve comprises a pressure balanced system. The pressure balanced system serves to balance pressure acting on the plunger such that the motor is able to move the plunger by simply overcoming friction of the seal system without overcoming a pressure differential otherwise acting on the plunger.