公开(公告)号：US20190219717A1

公开(公告)日：2019-07-18

申请号：US16326399

申请日：2017-10-03

Applicant: POLARCUS DMCC

Inventor： Erik GODØY ,  Edward HAGER

IPC: G01V1/38 ,  G01V1/00 ,  G01V1/137

CPC classification number: G01V1/3861 ,  G01V1/006 ,  G01V1/137 ,  G01V1/3808

Abstract: The invention provides a system (100) for marine seismic surveying, comprising a towing vessel (110) with a controller, a source array (120) and a receiver array (130) with several streamers (131). The source array (120) comprises n>4 identical subarrays (121) configured as at least (n−1) seismic sources S1, . . . , Sn-1, wherein adjacent subarrays (121) are part of at least two sources Si, Sj at different times.

公开(公告)号：US20170075012A1

公开(公告)日：2017-03-16

申请号：US15311208

申请日：2015-05-07

Applicant: Erik Godoy ,  POLARCUS DMCC

Inventor： Erik GODØY

IPC: G01V1/38 ,  B63B21/66

CPC classification number: G01V1/3826 ,  B63B21/663 ,  G01V1/201 ,  G01V1/3808 ,  G01V1/3843 ,  G01V2001/207

Abstract: The invention relates to a seismic streamer (1) for underwater towing at a towing speed in ice-free or wholly or partially icy water, the streamer (1) is provided with birds (2) spaced along the streamer, the streamer including the birds (2) has negative buoyancy, the birds have wings (8) which can be set so that the birds during movement in the water apply an upward or downward force on the streamer. The streamer (1) is provided with buoyant bodies (4) spaced along the streamer, the buoyant bodies are connected to the streamer by spacer elements (5), the streamer including the birds, the buoyant bodies with associated spacer elements and any other equipment together have positive buoyancy. The invention also relates to a corresponding method for securing a seismic streamer (1) from damage at a substantial reduction or cessation of towing speed when towing underwater in ice-free or wholly or partially icy water.

Abstract translation: 本发明涉及一种用于在无冰或完全或部分冰冷的水中以牵引速度进行水下牵引的地震拖缆（1），拖缆（1）设置有沿拖缆间隔开的鸟（2），包括鸟的飘带 （2）具有负浮力，鸟具有可设置的翼（8），使得在水中运动期间的鸟在拖缆上施加向上或向下的力。 拖缆（1）设置有沿拖缆间隔开的浮力体（4），浮体通过间隔元件（5）连接到拖缆上，拖缆包括鸟类，具有相关间隔元件的浮力体和任何其它设备 一起有积极的浮力。 本发明还涉及一种相应的方法，用于当在无冰或全部或部分冰冷的水中拖曳水下时，将地震拖缆（1）防止在大幅缩短或停止拖曳速度时的损坏。

公开(公告)号：US20190235117A1

公开(公告)日：2019-08-01

申请号：US16326401

申请日：2017-10-02

Applicant: POLARCUS DMCC

Inventor： Erik GODØY ,  Gary WINFIELD

IPC: G01V1/38 ,  G01V1/00 ,  G01V1/20

CPC classification number: G01V1/3835 ,  G01V1/006 ,  G01V1/20 ,  G01V1/3808 ,  G01V1/3817 ,  G01V1/3826

Abstract: A positioning system (100) for marine seismic surveying, comprising a towing vessel (110), a source array (120) and a receiver array (130) with several streamers (131). Each streamer (131) comprises at least three birds (134) and positioning sensors (134-137) wherein several seismic receivers (132) are placed between each pair of birds (134). The system (100) comprises a dynamic model wherein each streamer (131) is represented by a fitted B-spline curve and each bird (134) is associated with a constant velocity and a constant acceleration; and a Kalman filter using the dynamic model and observations from the positioning sensors (134-137) to provide a geodetic position of each seismic receiver (132) with better accuracy than the dynamic model alone and observations alone within a time interval Δt equal to or less than a minimum time between shots determined by the source array (120).

公开(公告)号：US20190128817A1

公开(公告)日：2019-05-02

申请号：US16092222

申请日：2017-05-15

Applicant: POLARCUS DMCC

Inventor： Erik GODØY

IPC: G01N21/85 ,  G01S17/02 ,  G01N33/18 ,  G01S7/48 ,  G01S17/89 ,  H04L9/06 ,  G06F21/60

Abstract: The invention concerns a system (100) for detecting pollution (2) on or at a sea surface (3), wherein the system (100) is adapted for mounting on a marine vessel (1). The system comprises a detector (110) with a LIDAR for providing digital pollution data (112) relating to pollution (2) in a region (40) along a path (4) travelled by the marine vessel (1); a positioning system (120) for providing positioning data; a clock (131) for providing a digital timestamp; and a computer (130) for collecting, combining and storing digital data (141). The computer (130) is configured to execute a secure hashing algorithm (133) on pollution data (112) with associated positioning data and a timestamp to produce a digest, execute an encryption function (134) on the digest using a private key (sk) and to store the data (141) and encrypted digest (142) in a database (140).

公开(公告)号：US20170334526A1

公开(公告)日：2017-11-23

申请号：US15526804

申请日：2015-11-23

Applicant: GODØY Erik ,  POLARCUS DMCC

Inventor： Erik GODØY

IPC: B63B21/66

CPC classification number: B63B21/663 ,  B63B2241/10 ,  F15D1/10 ,  G01V1/3826

Abstract: A cable fairing (fairing) (40) for reducing the flow resistance for a cable (45) has a wing formed cross section with a wide, rounded front and a tapered tail, a through-going cable channel (46) for the cable (45) perpendicular to the cross section of the widest part of the cross section. The wing profile comprises an elastic material of sufficient stiffness to maintain the shape when it is towed thereby causing flow resistance. The cable fairing (40) has slots (42) cut into the elastic material from the tail towards the cable channel (46), so that the tail comprises slats (41) which can be bent parallel to the cable channel (46) to reduce the cross-section of the cable fairing. By this is low flow resistance, as from a stiff cable jacket, combined with sufficient elastic deformability so the cable (45) with attached cable fairings (40), can be winched and pass through narrow openings in the deployment and retrieval, and wound onto a reel for storage and transport.