公开(公告)号：US20190064379A1

公开(公告)日：2019-02-28

申请号：US15687947

申请日：2017-08-28

申请人： SERCEL

发明人： Simon LEBOEUF

IPC分类号： G01V1/36 ,  G01V1/38 ,  G01V1/30 ,  G01V1/20

摘要： A method for rotating recorded seismic data. The method includes receiving raw seismic data recorded with a particle motion sensor located along a streamer; receiving vibrational data recorded by a gravity sensing sensor also located along the streamer; calculating an angle β(t), defined by a Z axis of the particle motion sensor and a Z0 axis of a global orthogonal system of coordinates, based on (1) an angle α(t), defined by a Zt axis of the gravity sensing sensor and the Z0 axis, and (2) an angle θ(t) defined by the Zt axis and the Z axis, wherein the Z axis is part of a first local orthogonal system of coordinates attached to the particle motion sensor, the Z0 axis is part of a global orthogonal system of coordinates attached to the earth, and the Zt axis is part of a second local orthogonal system of coordinates attached to the gravity sensing sensor; and correcting the raw seismic data by rotating the raw seismic data, recorded in the first local orthogonal system of coordinates, with the angle β(t), to obtain corrected seismic data in the global orthogonal system of coordinates. The first and second local system of coordinates share a same X axis but the other two axes of each of the first and second local systems are offset from each other by angle θ(t) while the streamer moves in water and records the raw seismic data and the vibrational data. The global orthogonal system of coordinates share the same X axis with the first and second local systems, and the global orthogonal system is fixed to the earth while the first and second local systems rotate with the streamer.

公开(公告)号：US20180011220A1

公开(公告)日：2018-01-11

申请号：US15205564

申请日：2016-07-08

申请人： SERCEL

发明人： Simon LEBOEUF

IPC分类号： G01V13/00 ,  G01V1/20

CPC分类号： G01V1/201 ,  G01V1/38

摘要： A method for calculating a tension (T) in a towed antenna. The method includes towing the antenna in water, wherein the antenna includes plural particle motion sensors distributed along the antenna; measuring with the plural particle motion sensors vibrations that propagate along the antenna; calculating a value of a phase velocity (vp) of the vibrations that propagate along the antenna based on (1) an offset between two particle motion sensors and (2) a time delay of the vibrations that propagate from one of the two particle motion sensors to another one of the two particle motion sensors; selecting a relation that links the phase velocity (vp) to the tension (T); and using the value of the phase velocity and the relation to determine the tension (T) at various locations of the plural particle motion sensors along the antenna.

公开(公告)号：US20160109588A1

公开(公告)日：2016-04-21

申请号：US14518183

申请日：2014-10-20

申请人： SERCEL

发明人： Gaetan MELLIER ,  Simon LEBOEUF ,  Alexis DUBOUÉ ,  Noël VOISIN

IPC分类号： G01V1/20 ,  G01V1/38

CPC分类号： G01V1/201 ,  G01R31/08 ,  G01V1/162 ,  G01V1/22 ,  G01V1/3817 ,  G01V1/3826 ,  G01V1/3835 ,  G01V2200/14 ,  G01V2210/1423

摘要： A seismic detection line includes one or more identified element(s) arranged in a string, and a telemetry link connecting the element(s) along the string to convey seismic data from at least one of the element(s) to a data recorder and identification data to a topology controller. Each of the element(s) includes a respective first identification unit connected to the telemetry link to provide a respective first identifier to the topology controller. A seismic detection system also includes a processor that queries the identified element(s) for their respective identifiers, determines an arrangement of the seismic detection line using the received identifiers, and presents an indication of the determined arrangement. A method of operating a seismic detection line includes transmitting a query along the telemetry link, detecting whether the respective identifier of one of the element(s) was received or not, repeating until termination, and determining and indicating the arrangement.

摘要翻译： 一个地震检测线包括一个或多个被确定的一个或多个串联的元件，以及遥测链路，沿着弦线连接元件以将地震数据从元件中的至少一个传送到数据记录器， 识别数据到拓扑控制器。 每个元件包括连接到遥测链路的相应的第一识别单元，以向拓扑控制器提供相应的第一标识符。 地震检测系统还包括一个处理器，用于对其识别的元件查询其相应的标识符，使用接收到的标识符确定地震检测线的布置，并呈现所确定的布置的指示。 操作地震检测线的方法包括沿着遥测链路发送查询，检测是否接收到元素中的一个的相应标识符，重复直到终止，以及确定和指示该布置。