公开(公告)号：US09822632B2

公开(公告)日：2017-11-21

申请号：US14764934

申请日：2013-01-31

Applicant: STATOIL PETROLEUM AS

Inventor： Halvor Kjørholt ,  Gisle Stjern

IPC: E21B47/06 ,  E21B33/13 ,  E21B33/134 ,  E21B47/10 ,  E21B33/124

CPC classification number: E21B47/06 ,  E21B33/124 ,  E21B33/13 ,  E21B33/134 ,  E21B47/1025

Abstract: A method of plugging a well extending into a hydrocarbon bearing formation facilitates temporary or permanent abandonment of the well. The method includes forming two or more plugs within the well, the plugs being formed at longitudinally spaced apart locations whilst providing a fluid communication path from a region above the topmost plug to the or each space between adjacent plugs. This configuration facilitates pressure testing of one or more of the plugs by conducting fluid through said path.

公开(公告)号：US09714555B2

公开(公告)日：2017-07-25

申请号：US14764927

申请日：2013-01-31

Applicant: STATOIL PETROLEUM AS

Inventor： Halvor Kjørholt ,  Gisle Stjern

IPC: E21B33/13 ,  E21B33/134 ,  E21B29/02

CPC classification number: E21B33/13 ,  E21B29/02 ,  E21B33/134

Abstract: A method of plugging a well extending into a hydrocarbon bearing formation fascilitates temporary or permanent abandonment of the well. The method includes detonating one or more explosive charges within a tubular or tubulars extending through the well in order to remove, fragment and or cut one or more sections of the tubulars around the entire circumference of the well to expose the surrounding formation or cement. The well is then filled in the region of the exposed surrounding formation or cement with a sealing material so as to form one or more plugs within the well to seal the well.

公开(公告)号：US10208547B2

公开(公告)日：2019-02-19

申请号：US15722320

申请日：2017-10-02

Applicant: Statoil Petroleum AS

Inventor： Halvor Kjørholt ,  Jan Håvard Jøranson ,  Fredrik Varpe

IPC: E21B43/25 ,  E21B43/26 ,  E21B34/06 ,  E21B17/18 ,  E21B33/124 ,  E21B43/14

Abstract: A method, system and apparatus for producing hydrocarbons from a low permeability reservoir formation. A wellbore with a plurality of fractures designated as one of a first or a second set of fractures is provided. A first fluid conduit is formed by an annulus between an outer casing of a tubular and an inner tubular member, and is arranged to transport produced hydrocarbons. An interior of the inner tubular member forms a second fluid conduit which is arranged to transport an injection fluid. A set of first openings is provided in fluid connection with the first fluid conduit, each first opening being located to substantially align with one of a first set of fractures. A set of second openings is provided in fluid connection with the second fluid conduit, each second opening being located to substantially align with one of a second set of fractures. A high pressure fluid is injected into the second set of fractures, which pushes hydrocarbons located in the low permeability reservoir towards the first set of fractures, thereby increasing the recovery rate of hydrocarbons in the low permeability reservoir.

公开(公告)号：US09816358B2

公开(公告)日：2017-11-14

申请号：US15130472

申请日：2016-04-15

Applicant: STATOIL PETROLEUM AS

Inventor： Audun Faanes ,  Halvor Kjørholt ,  Torstein Vinge

IPC: E21B43/10 ,  E21B29/10 ,  E21B33/035 ,  E21B33/047

CPC classification number: E21B43/103 ,  E21B29/10 ,  E21B33/035 ,  E21B33/047 ,  E21B43/10 ,  E21B43/101

Abstract: Reducing the diameter of a well bore has many advantages. To achieve this a subsurface well bore is provided comprising one or more expandable sleeve components, preferably expandable liners, each expandable sleeve component being fully overlapped by one or more non expandable sleeve component, preferably conventional liners, such that the interior of the well bore is cased entirely by non expandable sleeve components. In addition the through holes for downhole lines can be provided within the well head rather than the tubing hanger. As the tubing hanger does not need to provide space for through holes and associated mounting couplings, its diameter can be reduced, thus reducing the internal diameter of the well bore by several inches.

公开(公告)号：US10392885B2

公开(公告)日：2019-08-27

申请号：US15821352

申请日：2017-11-22

Applicant: STATOIL PETROLEUM AS

Inventor： Gisle Stjern ,  Gjermund Grimsbo ,  Halvor Kjørholt ,  Pål Viggo Hemmingsen

IPC: E21B23/04 ,  E21B33/12 ,  E21B33/14 ,  E21B33/134 ,  E21B43/116

Abstract: A method of plugging a well extending into a formation to facilitate temporary or permanent abandonment of the well. The method comprises conveying in one trip, a plug assembly and one or more explosive charges through the well together with a structure for providing wet sealant. The plug assembly comprises a foundation plug for supporting the wet sealant. The plug assembly is set beneath a plug formation location, prior to providing the wet sealant. The method also comprises providing the wet sealant to the plug formation location via the structure, so as to submerge the one or more explosive charges in the wet sealant, and then detonating the one or more explosive charges in the wet sealant at the plug formation location to cut through a tubular or tubulars of the well and into the formation.