Method for acquisition of seismic data at sea
    11.
    发明授权
    Method for acquisition of seismic data at sea 失效
    海上地震数据采集方法

    公开(公告)号:US5771202A

    公开(公告)日:1998-06-23

    申请号:US952827

    申请日:1993-06-30

    CPC classification number: G01V1/3808

    Abstract: A method for acquisition of seismic data from an area surveyed using a group of seismic energy sources and a group of seismic streamer cables, particularly a marine area, includes forming a first group A from at least two elements of either seismic energy sources S or seismic streamer cables C having a spacing X between said elements, forming a second group B from at least two of the other elements of sources S or cables C than that forming group (A), spacing the elements in group B a distance equal to X multiplied by the number of elements in group A, forming a group C from at least two subgroups each consisting of a group A, spacing said subgroups in group C in distance equal to the distance between two elements in group B multiplied by the number of elements in group B, the spacing between two adjacent subgroups being equal to the lateral distance between midpoints between the subgroups, and forming further groups as desired D, E, F etc., by combining at least two subgroups of group B, C, D, respectively, etc., each further group having a lateral spacing between the midpoints between two adjacent subgroups equal to the lateral distance between the midpoints between two adjacent subgroups in group C, D, E, respectively, etc., multiplied by the number of subgroups in groups C, D, E, respectively, etc.

    Abstract translation: PCT No.PCT / NO91 / 00071 Sec。 371日期:1993年6月30日 102(e)日期1993年6月30日PCT 1991年5月16日提交PCT公布。 公开号WO91 / 18302 日期1991年11月28日一种从使用一组地震能源和一组地震拖缆电缆,特别是海洋区域测量的地区获取地震数据的方法包括从地震的至少两个要素形成第一组A 能量源S或地震拖缆C在所述元件之间具有间隔X,从形成组(A)的源S或电缆C的其它元件中的至少两个元件形成第二组B,将组B中的元件 距离等于X乘以组A中的元素数量,从至少两个由A组组成的子组形成组C,将组C中的所述子组间距离等于组B中的两个元素之间的距离乘以 组B中的元素的数量,两个相邻子组之间的间隔等于子组之间的中间点之间的横向距离,并且通过组合至少两个组合形成另外的组D,E,F等等 B组,C组,D组的分组等等,每个另外的组在两个相邻子组之间的中点之间具有等于组C,D,E中的两个相邻亚组之间的中点之间的横向距离之间的横向间隔, 分别乘以组C,D,E中的子组数等。

    Method for synchronization of systems for seismic surveys, together with
applications of the method
    12.
    发明授权
    Method for synchronization of systems for seismic surveys, together with applications of the method 失效
    地震勘测系统同步方法,以及该方法的应用

    公开(公告)号:US5548562A

    公开(公告)日:1996-08-20

    申请号:US58204

    申请日:1993-05-10

    CPC classification number: G01V1/26 G01S19/14

    Abstract: A method for the synchronization of systems for seismic surveys, wherein the systems are composed of subsystems and may be land-based or marine, consists in the survey system being supplied with an absolute time standard and in a time code based on the absolute time standard being generated in the survey system. There is further provided at least one programmable event generator in the survey system and this is synchronized with the absolute time standard. The time for a specific event is predetermined on the basis of given parameters and supplied with the time code which corresponds to this time. The time for a determined event is then supplied to the subsystems which are also provided with the absolute time standard. The event can thereby be executed in one or more of the subsystems on the basis of the supplied absolute time standard and a synchronization is obtained with the desired accuracy. The method can further be used for synchronizing shot times in a seismic signal generating system, and synchronizing the shot recording time and sampling times in a seismic data recording system. The method can also be used for determining the exact time of actually occurring events in a system for seismic surveys.

    Abstract translation: 一种用于地震勘测系统同步的方法,其中系统由子系统组成,并且可以是陆基或海洋,包括在被提供绝对时间标准的测量系统中,并且基于绝对时间标准的时间码 在调查系统中产生。 还在调查系统中提供至少一个可编程事件发生器,并与绝对时间标准同步。 特定事件的时间是基于给定参数预先确定的,并提供与此时间对应的时间码。 然后将确定的事件的时间提供给也具有绝对时间标准的子系统。 因此,可以基于所提供的绝对时间标准在一个或多个子系统中执行该事件,并且以期望的精度获得同步。 该方法还可以用于在地震信号发生系统中同步拍摄时间,并且在地震数据记录系统中同步拍摄记录时间和采样时间。 该方法还可用于确定地震勘测系统中实际发生事件的确切时间。

    Device for securing two or more seismic energy sources at fixed relative
positions
    13.
    发明授权
    Device for securing two or more seismic energy sources at fixed relative positions 失效
    用于将两个或更多个地震能量源固定在固定相对位置的装置

    公开(公告)号:US5475188A

    公开(公告)日:1995-12-12

    申请号:US204184

    申请日:1994-03-04

    CPC classification number: G01V1/38

    Abstract: A device for securing two or more seismic energy sources at fixed relative positions during firing of the sources consists of a rigid framework comprising end frames and intermediate bars. In order to provide an extremely light but at the same time completely rigid framework, the seismic energy sources are used as longitudinal bars between the end elements.

    Abstract translation: PCT No.PCT / NO92 / 00137 Sec。 371日期1994年3月4日 102(e)1994年3月4日PCT PCT 1992年9月1日PCT公布。 出版物WO93 / 05410 日期:1993年3月18日。一种用于在发射源期间将两个或更多个地震能量源固定在固定的相对位置的装置包括由框架和中间杆组成的刚性框架。 为了提供非常轻的但同时完全刚性的框架,地震能量源被用作端部元件之间的纵向条。

    Deflector
    14.
    发明授权
    Deflector 失效
    偏转器

    公开(公告)号:US5357892A

    公开(公告)日:1994-10-25

    申请号:US35365

    申请日:1993-03-22

    CPC classification number: G01V1/3826 A01K73/045 B63B21/66

    Abstract: A deflector (2) for installation in the tow-line (4, 5) between a towing vessel and a tow which is located in the water, e.g. a cable with seismic sources or a seismic source array, is suspended by a float (1) and has a fitting (9) therefrom having a tow-point (7) near the front part of the deflector connected to the tow-line (4), and an attachment point (8) to the rear of the deflector for further connection thereto of the rear part of the tow-line connected to the two. In order to be able to locate the deflector in a desired position in relation to the towing vessel and compensate for alternations in the effects of forces from the tow or vessel in addition to movements in the water, the tow-line (5) which leads on to the actual tow from the deflector body (2) is attached (8) to the deflector via a pivotable lever (10) which is situated at the same height as the lifting force center of the deflector body. The tow-point (7) for the tow-line (4 ) is provided at one lateral surface of the deflector body (2) in front of the vertical center line thereof. An additional deflector wing (18) may be incorporated in the rear part (5) of the tow-line.

    Abstract translation: 用于安装在牵引容器和位于水中的丝束之间的拖曳线(4,5)中的偏转器(2),例如。 具有地震源或地震源阵列的电缆由浮子(1)悬挂,并具有一个配件(9),在该导向器的前部附近具有连接到牵引线(4)的接头(7) )和连接到导流板后部的附接点(8),用于进一步连接到与两者连接的拖绳的后部。 为了能够将偏转器相对于牵引容器定位在期望的位置,并且除了水中的运动之外还补偿来自丝束或容器的力的变化的变化,引导线(5)引导 通过位于与偏转器主体的提升力中心相同的高度的可枢转杠杆(10)将来自偏转器主体(2)的实际的丝束附接(8)到偏转器。 牵引线(4)的牵引点(7)设置在偏转体(2)的垂直中心线的前侧的一个侧面。 另外的导流翼(18)可以结合在牵引线的后部(5)中。

    Device for use in a seismic streamer
    15.
    发明授权
    Device for use in a seismic streamer 失效
    用于地震潮流的装置

    公开(公告)号:US5228005A

    公开(公告)日:1993-07-13

    申请号:US863984

    申请日:1992-04-06

    Applicant: Cato Bjelland

    Inventor: Cato Bjelland

    CPC classification number: G01V1/208 B63G8/39 D07B5/006

    Abstract: Seismic streamers (detection cables) used in the reception of reflection signals during seismic surveys at sea, where the streamer is towed behind a vessel, are constructed with an external, tubular cover (1) of a flexible plastic material. In order to reduce the noise produced by movement of the streamer through the water the external cover (1) is constructed with continuous longitudinally extending grooves (3) in its longitudinal direction, and preferably regularly disposed circumferentially around the entire periphery of the cover (1).

    Abstract translation: 用于在海上进行地震勘测期间接收反射信号的地震拖缆(检测电缆),其中拖缆被拖在船舶后面,用柔性塑料材料的外部管状盖(1)构成。 为了减少流光通过水的移动产生的噪音,外盖(1)在其纵向方向上构造有连续的纵向延伸的槽(3),并且优选地围绕罩(1)的整个周边周向地周向地设置 )。

    Arrangement in a buoyancy towed body means
    16.
    发明授权
    Arrangement in a buoyancy towed body means 失效
    布置方式的布置方式

    公开(公告)号:US5188053A

    公开(公告)日:1993-02-23

    申请号:US564067

    申请日:1990-08-08

    CPC classification number: B63B3/08 B63G8/42

    Abstract: A bouyancy towed body, especially to be used in marine seismic surveys is assembled from a plurality of modules (1, 2, 3, 4) for adaption to various applications. Modules (1-4) may be locked together, e.g. by through rods (6) provided with tensioning screw and nut devices (8). Modules (1-4) are assembled to form a buoyancy member having a homogeneous surface shape. One (3) or a plurality of modules may be provided with elements (5) for attaching desired equipment thereto which may hang down from the towed body.

    Abstract translation: 特别是用于海洋地震勘测的bouyancy拖曳机体由多个模块(1,2,3,4)组装,适用于各种应用。 模块(1-4)可以被锁定在一起,例如。 通过设置有张紧螺钉和螺母装置(8)的杆(6)。 模块(1-4)被组装以形成具有均匀表面形状的浮力构件。 一个(3)或多个模块可以设置有用于将期望的设备附接到其上的元件(5),其可以从被拖曳的主体垂下。

    Method of assigning a seismic trace
    17.
    发明授权
    Method of assigning a seismic trace 失效
    地震跟踪方法

    公开(公告)号:US5150332A

    公开(公告)日:1992-09-22

    申请号:US746640

    申请日:1991-08-19

    CPC classification number: G01V1/34

    Abstract: A method of assigning seismic traces obtained by means of one or more seismic sources (1) and receivers (2) wherein, a plane containing each source (1) and receivers (2) is divided into a regular array of regions (12-18), for example a rectangular array referred to cartesian coordinates (X-Y). The regions cover at least a middle portion of a line (11) joining each source (1) to each receiver (2). Diagonals (19-25) intersect the line (11) at respective intersection points and offspring traces are allocated to these points.

    Abstract translation: 一种分配通过一个或多个地震源(1)和接收器(2)获得的地震迹线的方法,其中,包含每个源(1)和接收器(2)的平面被划分为规则的阵列阵列(12-18 ),例如,涉及笛卡尔坐标(XY)的矩形阵列。 这些区域覆盖将每个源(1)连接到每个接收器(2)的线路(11)的至少中间部分。 对角线(19-25)在相应交点处与线(11)相交,并将后代轨迹分配给这些点。

    Method and a device for stabilizing sources of seismic energy
    18.
    发明授权
    Method and a device for stabilizing sources of seismic energy 失效
    用于稳定地震能源的方法和装置

    公开(公告)号:US5138582A

    公开(公告)日:1992-08-11

    申请号:US729345

    申请日:1991-07-12

    Applicant: Harald Furu

    Inventor: Harald Furu

    CPC classification number: G01V1/3861

    Abstract: In seismic surveys at sea a system for maintaining the sources of seismic energy (2) at the same level when emitting their signals includes sensors (5) provided close to the sources of energy (2) for emitting signals representing pressure conditions and/or motion transmitted to a control unit (9). These signals are compared by control unit (9) for controlling driving devices (6) for the suspension lines (3) for the sources of seismic energy (2), so that their distances from the surface of the sea may be controlled to keep all sources (2) at the same level.

    Abstract translation: 在海上地震勘测中,发射信号时将地震能量源(2)维持在相同水平的系统包括靠近能量源(2)提供的传感器(5),用于发射表示压力条件和/或运动的信号 发送到控制单元(9)。 这些信号由用于控制用于地震能源(2)的源的悬挂线(3)的驱动装置(6)的控制单元(9)进行比较,使得它们与海面的距离可以被控制以保持全部 来源(2)在同一级别。

    Cable handling apparatus
    19.
    发明授权
    Cable handling apparatus 失效
    电缆处理设备

    公开(公告)号:US4828223A

    公开(公告)日:1989-05-09

    申请号:US105078

    申请日:1987-10-05

    CPC classification number: B65H75/425 B65H51/14 B66D3/003

    Abstract: A cable handling apparatus draws in a cable, such as a seismic streamer, along a generally linear path and feeds the cable to a winch which winds in the cable from the apparatus under constant tension.

    Abstract translation: 电缆处理装置沿着大致直线的路径吸入诸如地震拖缆的电缆,并且将电缆馈送到在恒定张力下从设备在电缆中卷绕的绞盘。

    Reinforcing device in the inner portion of seismic cables
    20.
    发明授权
    Reinforcing device in the inner portion of seismic cables 失效
    地震电缆内部加强装置

    公开(公告)号:US4744065A

    公开(公告)日:1988-05-10

    申请号:US9812

    申请日:1987-02-02

    CPC classification number: G01V1/201 F16G11/046 F16G11/048 Y10T29/4989

    Abstract: A reinforcing device to achieve stable fastening points for the inner portion (2) of seismic cables, especially cables that are towed laterally displaced in parallel in relation to the towing vessel and provided with at least two layers of armoring (5,6) intended for absorbing stretch loads on said cable, comprises a fastening means on at least one of the end areas of the inner portion (2), and gripping surfaces for external equipment and shaped with at least two securing chambers (3,4). For assembling the outermost layers of armoring (5,6) of said cable are separated and inserted into one chamber each (3, 4), wherein they are secured to form an integrated connection with said casing (2).

    Abstract translation: 特别是用于为地震电缆的内部部分(2)实现稳定的紧固点的加强装置,特别是相对于牵引容器平行地横向移动的电缆,并且设置有至少两层装甲(5,6),用于 在所述电缆上吸收拉伸载荷,包括在内部部分(2)的至少一个端部区域上的紧固装置和用于外部设备的夹紧表面并且具有至少两个固定室(3,4)成形。 为了组装,所述电缆的铠装(5,6)的最外层被分离并插入每个(3,4)的一个室中,其中它们被固定以与所述壳体(2)形成一体的连接。

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