公开(公告)号：US11780535B2

公开(公告)日：2023-10-10

申请号：US17105086

申请日：2020-11-25

Applicant: PGS Geophysical AS

Inventor： Jostein Lima

IPC: B63B21/66 ,  G01V1/20

CPC classification number: B63B21/66 ,  G01V1/201

Abstract: Embodiments relate generally to marine geophysical surveying. More particularly, embodiments relate to an underwater application system for application of a streamer coating to a surface of a streamer. An embodiment may comprise a marine geophysical survey system. The marine geophysical survey system may comprise a streamer and an underwater application system operable to apply a streamer coating to the streamer as the underwater application system travels axially along the streamer.

公开(公告)号：US20190113645A1

公开(公告)日：2019-04-18

申请号：US16154876

申请日：2018-10-09

Applicant: PGS Geophysical AS

Inventor： Stian Hegna ,  Tilman Kluver ,  Jostein Lima

IPC: G01V1/38 ,  G01V1/00

Abstract: Techniques are disclosed relating to performing marine surveys with non-uniform spacing of survey elements in a cross-line direction. This may include, for example, performing a survey pass in a multi-pass survey by towing a plurality of sources and sensors in a towing pattern with non-uniform spacing between adjacent ones of the sources. In some embodiments, the non-uniform spacing between adjacent ones of the sources is determined based on a common mid-point (CMP) spacing parameter for the survey pass in the cross-line direction. The spacing parameter may relate, for example, to difference in average CMP spacing for different parts of the survey spread, variance in CMP spacing, and/or width of the survey spread for which a threshold CMP spacing distance is satisfied. In various embodiments, the disclosed techniques may improve survey resolution and/or accuracy and may require a smaller number of survey passes and/or a reduced amount of survey equipment relative to traditional techniques.

公开(公告)号：US11480701B2

公开(公告)日：2022-10-25

申请号：US16154876

申请日：2018-10-09

Applicant: PGS Geophysical AS

Inventor： Stian Hegna ,  Tilman Kluver ,  Jostein Lima

IPC: G01V1/38 ,  G01V1/00

Abstract: Techniques are disclosed relating to performing marine surveys with non-uniform spacing of survey elements in a cross-line direction. This may include, for example, performing a survey pass in a multi-pass survey by towing a plurality of sources and sensors in a towing pattern with non-uniform spacing between adjacent ones of the sources. In some embodiments, the non-uniform spacing between adjacent ones of the sources is determined based on a common mid-point (CMP) spacing parameter for the survey pass in the cross-line direction. The spacing parameter may relate, for example, to difference in average CMP spacing for different parts of the survey spread, variance in CMP spacing, and/or width of the survey spread for which a threshold CMP spacing distance is satisfied. In various embodiments, the disclosed techniques may improve survey resolution and/or accuracy and may require a smaller number of survey passes and/or a reduced amount of survey equipment relative to traditional techniques.

公开(公告)号：US20200081147A1

公开(公告)日：2020-03-12

申请号：US16685602

申请日：2019-11-15

Applicant: PGS Geophysical AS

Inventor： Jostein Lima ,  Tilman Kluver ,  Stian Hegna

IPC: G01V1/38 ,  G01V1/00

Abstract: Source element of a source subarray can be individually actuated according to an actuation sequence. The actuation sequence can be at least partially based on a relative position of each of the source elements within a particular geometry of the source subarray with respect to a previously actuated source element and a towing velocity of the source subarray.

公开(公告)号：US20210188403A1

公开(公告)日：2021-06-24

申请号：US17105086

申请日：2020-11-25

Applicant: PGS Geophysical AS

Inventor： Jostein Lima

IPC: B63B21/66 ,  G01V1/20

Abstract: Embodiments relate generally to marine geophysical surveying. More particularly, embodiments relate to an underwater application system for application of a streamer coating to a surface of a streamer. An embodiment may comprise a marine geophysical survey system. The marine geophysical survey system may comprise a streamer and an underwater application system operable to apply a streamer coating to the streamer as the underwater application system travels axially along the streamer.

公开(公告)号：US20170176620A1

公开(公告)日：2017-06-22

申请号：US15344669

申请日：2016-11-07

Applicant: PGS Geophysical AS

Inventor： Jostein Lima ,  Tilman Kluver ,  Stian Hegna

IPC: G01V1/38

CPC classification number: G01V1/3861 ,  G01V1/006 ,  G01V2210/127

Abstract: Source element of a source subarray can be individually actuated according to an actuation sequence. The actuation sequence can be at least partially based on a relative position of each of the source elements within a particular geometry of the source subarray with respect to a previously actuated source element and a towing velocity of the source subarray.