公开(公告)号：US20180156011A1

公开(公告)日：2018-06-07

申请号：US15576048

申请日：2016-04-20

Applicant: STATOIL PETROLEUM AS

Inventor： Morten EIDEM ,  Gjermund GRIMSBO ,  Torgeir WENN

IPC: E21B34/14 ,  E21B34/12

CPC classification number: E21B34/14 ,  E21B7/20 ,  E21B34/12 ,  E21B43/086 ,  E21B43/10 ,  E21B2034/007

Abstract: A method for achieving zonal control in a wellbore when using casing or liner drilling includes providing a slotted tubular section in a wellbore while drilling; providing a sleeve adjacent to and radially overlapping with the slotted tubular section, while drilling; and moving the sleeve relative to the slotted tubular section so as to permit and/or restrict flow through the slotted tubular section in one or more selected zones.

公开(公告)号：US20170218708A1

公开(公告)日：2017-08-03

申请号：US15424545

申请日：2017-02-03

Applicant: STATOIL PETROLEUM AS

Inventor： Morten EIDEM ,  Stein Børre TORP ,  Torgeir WENN

IPC: E21B17/05 ,  E21B34/10

CPC classification number: E21B17/05 ,  E21B34/10 ,  E21B43/10 ,  E21B2034/007

Abstract: A method of completing a well which has a longitudinal axis along a direction with a horizontal component, the method comprising rotating a first string and moving the first string into the well along the longitudinal axis of the well, providing a swivel joint rotatably connecting the first string to a second string, moving the second string along the longitudinal axis of the well into the well, wherein the second string comprises completion equipment, moving the completion equipment into the well along the longitudinal axis of the well.

公开(公告)号：US20170241225A1

公开(公告)日：2017-08-24

申请号：US15513048

申请日：2015-09-17

Applicant: STATOIL PETROLEUM AS

Inventor： Gjermund GRIMSBO ,  Marcus FATHI ,  Torgeir WENN ,  Pål Viggo HEMMINGSEN ,  Astrid BJØRGUM

IPC: E21B29/02 ,  E21B47/00 ,  E21B33/12 ,  E21B33/13

CPC classification number: E21B29/02 ,  E21B33/12 ,  E21B33/13 ,  E21B47/00

Abstract: There is provided a method for removing iron-containing casing from a well bore comprising providing a cathode in said well bore, wherein said cathode is connected to the negative pole of a power source; connecting said iron-containing casing to the positive pole of said power source; injecting an electrolyte into said well bore, wherein said electrolyte contacts said iron-containing casing and said cathode; applying a current so that the iron in said iron-containing casing is oxidised to iron cations; allowing said iron cations to dissolve in said electrolyte; and removing said electrolyte from said well bore. Also provided are a system for removing iron-containing casing from a well bore, a method for monitoring the removal of an iron-containing casing from a well bore and a method for plugging and abandoning a well.