公开(公告)号：US10422443B2

公开(公告)日：2019-09-24

申请号：US15548046

申请日：2016-02-22

Applicant: Statoil Petroleum AS

Inventor： Geir Endal ,  Jens Haugen

IPC: F16L1/26 ,  F16L1/24 ,  E21B43/01 ,  F16L1/23 ,  F16L1/20

Abstract: A method and apparatus for direct tie-in of pipelines are disclosed. An apparatus is attached to a portion of a pipeline, the apparatus including a tensioning member and a buoyancy element attached to the tensioning member such that, when submerged, the pipeline is deflected as a result of a buoyancy force tensioning the tensioning member, and on releasing the buoyancy element, direct tie-in of the pipeline is performed.

公开(公告)号：US10364916B2

公开(公告)日：2019-07-30

申请号：US15300607

申请日：2014-03-31

Applicant: Statoil Petroleum AS

Inventor： Johan K. Moen ,  Geir Endal ,  Rolf Morten Nes ,  Ståle Størkersen

IPC: F16L1/26 ,  F16L1/16 ,  F16L1/24 ,  E21B43/013

Abstract: A method of installing a subsea pipeline having a direct tie-in to a subsea structure includes, during introduction of the pipeline into the sea from a pipe laying vessel, applying a plastic deformation to a region of the pipeline at or close to an end of the pipeline to be tied-in and, either during or following tie-in, elastically deforming the region to increase its radius of curvature.

公开(公告)号：US10571048B2

公开(公告)日：2020-02-25

申请号：US15548046

申请日：2016-02-22

Applicant: Statoil Petroleum AS

Inventor： Geir Endal ,  Jens Haugen

IPC: F16L1/26 ,  F16L1/24 ,  E21B43/01 ,  F16L1/23 ,  F16L1/20

Abstract: A method and apparatus for direct tie-in of pipelines are disclosed. An apparatus is attached to a portion of a pipeline, the apparatus including a tensioning member and a buoyancy element attached to the tensioning member such that, when submerged, the pipeline is deflected as a result of a buoyancy force tensioning the tensioning member, and on releasing the buoyancy element, direct tie-in of the pipeline is performed.

公开(公告)号：US10520112B2

公开(公告)日：2019-12-31

申请号：US15546225

申请日：2016-02-22

Applicant: Statoil Petroleum AS

Inventor： Geir Endal ,  Jens Haugen

IPC: F16L1/12 ,  F16L1/23 ,  F16L1/26 ,  F16L1/16 ,  F16L1/24

Abstract: A method and apparatus are provided for laying pipelines. The apparatus is attached to a portion of a pipeline and includes a tensioning member and a buoyancy element attached to a mid-portion of the tensioning member. When the buoyancy element is submerged, the buoyancy force tensions the tensioning member, and the pipeline will take the intended deflected shape to follow seabed depressions.