公开(公告)号：WO2020212726A1

公开(公告)日：2020-10-22

申请号：PCT/IB2019/053076

申请日：2019-04-15

Applicant: ABU DHABI NATIONAL OIL COMPANY

Inventor： NEWTON, Daniel ,  BEAMAN, Daniel ,  MITCHELL, Campbell

IPC: E21B34/14

Abstract: Well unloading valve 1 for a petrochemical well tubing 4 comprising a flow passage 12 connecting an annulus 6 outside the tubing 4 with the inside 5 of the tubing 4; a lock- out sleeve 10 for selectively closing the flow passage 12, wherein the lock-out sleeve 10 can be moved from an open to a closed position by means of hydraulic pressure within the tubing 4; an electrically activated motor module 30 for moving a seal 32, wherein the seal 32 selectively opens a hydraulic connection 34 from the inside 5 of tubing 4 to the lock-out sleeve 10 for moving the lock-out sleeve 10 hydraulically from the open to the closed position; and a check valve 20 within the flow passage 12 for allowing a flow from the annulus 6 into the tubing 4 and for blocking a flow from the tubing 4 into the annulus 6. Further a method for unloading a petrochemical well tubing 4 is claimed.

公开(公告)号：WO2019064049A1

公开(公告)日：2019-04-04

申请号：PCT/IB2017/055881

申请日：2017-09-27

Applicant: ABU DHABI NATIONAL OIL COMPANY

Inventor： NEWTON, Daniel ,  BEAMAN, Daniel

IPC: E21B43/10

CPC classification number: E21B34/06 ,  E21B41/0078 ,  E21B43/08

Abstract: A liner for a wellbore having a sidewall in which one or more nozzles are formed is described, wherein the one or more nozzles are plugged by temporary plugs. Also described is a method of completing an open hole well that penetrates a subterranean formation in which a liner having a sidewall in which one or more nozzles are formed, wherein the one or more nozzles are plugged by temporary plugs, is deployed in the well such that the nozzles communicate with the formation.