公开(公告)号：US20230408719A1

公开(公告)日：2023-12-21

申请号：US18240547

申请日：2023-08-31

Applicant: Reflection Marine Norge AS

Inventor： David Fraser Halliday ,  Jon-Fredrik Hopperstad ,  Robert Montgomery Laws

IPC: G01V1/38

CPC classification number: G01V1/3861 ,  G01V1/3808 ,  G01V2210/127

Abstract: Marine seismic surveys, including ocean bottom surveys, utilizing marine vibrator arrays that are capable of being driven in anti-phase to produce a directional source gradient. Marine seismic surveys may include activating the vibrator array to emit a plurality of radiation patterns with at least a first radiation pattern that has a first notch at a take-off angle that is not close to vertical. Some marine seismic surveys included emitting directive wavefields from two or more simultaneous seismic source arrays, where the two or more seismic source arrays have a phase that changes from shot-to-shot to allow simultaneous source separation of the directive wavefields.

公开(公告)号：US20180364376A1

公开(公告)日：2018-12-20

申请号：US15983918

申请日：2018-05-18

Applicant: PGS Geophysical AS

Inventor： Nils Gunnar Olof KRÖLING

IPC: G01V1/135 ,  G01V1/145 ,  G01V1/38

CPC classification number: G01V1/135 ,  G01V1/145 ,  G01V1/38 ,  G01V1/3808 ,  G01V2210/1214 ,  G01V2210/127

Abstract: The disclosure herein generally relates to a device for use in marine seismic surveying. A displacement apparatus has a base and an actuated head. The actuated head is coupled to an actuation means comprising a shaft, a cam, and a motor. The cam is coupled to the shaft at a radial position from the center of the cam. A vacuum piston is optionally coupled to the actuation means. A variable resonance spring, such as an air spring, is coupled to the actuated head in order to tune the apparatus to operate in resonance at a range of frequencies.

公开(公告)号：US09835745B2

公开(公告)日：2017-12-05

申请号：US14762210

申请日：2014-01-22

Applicant: CGG SERVICES SA

Inventor： Karine Desrues

IPC: G01V1/38 ,  G01V1/20 ,  G01V1/18 ,  G01V1/137

CPC classification number: G01V1/201 ,  G01V1/137 ,  G01V1/186 ,  G01V1/3808 ,  G01V1/3817 ,  G01V1/3843 ,  G01V1/3861 ,  G01V2210/1212 ,  G01V2210/127 ,  G01V2210/1293 ,  G01V2210/1423

Abstract: Presented are methods and systems for collecting marine seismic data. The collected seismic data can be low frequency (e.g., less than 10 Hz) or it can be a full seismic bandwidth (1-200 Hz) depending on if the low frequency tuned sources and tuned receivers are combined with conventional sources and receivers. The low frequency sources can be towed or they can be autonomous and positioned in the survey area by tether, drifting or self-propelled. The tuned low frequency receivers are towed at a depth greater than conventional receivers and the sources can be fired independently or simultaneously.

公开(公告)号：US09726773B2

公开(公告)日：2017-08-08

申请号：US14802164

申请日：2015-07-17

Applicant: IHI Corporation ,  Hitoshi Mikada

Inventor： Hitoshi Mikada ,  Hiroaki Ozasa ,  Fumio Sato ,  Shigeki Nagaya ,  Akio Yamanishi

IPC: G01V1/38 ,  G01V1/30 ,  G01V1/00 ,  G01V1/28

CPC classification number: G01V1/3808 ,  G01V1/006 ,  G01V1/284 ,  G01V1/301 ,  G01V1/3817 ,  G01V2210/127 ,  G01V2210/64 ,  Y02A90/36

Abstract: A subaqueous underground survey system using a reflection seismic survey method includes: multiple sound sources 1 for generating sound waves in the water; a controller 2 for controlling phases of the sound waves; a geophone 3 for receiving reflected waves of the sound waves; and an observation ship 4 equipped with the sound sources 1, wherein the controller 2 controls phases of the sound sources 1 so that the sound waves generated from the respective sound sources 1 have a phase difference at a water bottom surface B, thereby controlling generation of shear waves to propagate into the ground.

公开(公告)号：US20170184746A1

公开(公告)日：2017-06-29

申请号：US15127334

申请日：2015-03-19

Applicant: WESTERNGECO LLC

Inventor： David Fraser Halliday

IPC: G01V1/30 ,  G01V1/38

CPC classification number: G01V1/306 ,  G01V1/307 ,  G01V1/364 ,  G01V1/38 ,  G01V1/3808 ,  G01V1/3861 ,  G01V2210/127 ,  G01V2210/62

Abstract: Acquiring seismic data using time-distributed sources and converting the acquired data into impulsive data using a multiple-frequency approach. The methods are performed in frequency-source location domain, frequency-wavenumber domain, or frequency-slowness domain. The methods are applicable to single source acquisition or simultaneous source acquisition.

公开(公告)号：US09690003B2

公开(公告)日：2017-06-27

申请号：US14227012

申请日：2014-03-27

Applicant: CGGVERITAS SERVICES SA

Inventor： John Sallas

IPC: G01V1/00 ,  G01V1/38 ,  G01V1/37

CPC classification number: G01V1/38 ,  G01V1/005 ,  G01V1/375 ,  G01V2210/127

Abstract: Method for separating signals recorded by a seismic receiver and generated with at least two vibratory seismic sources driven with no listening time. The method includes receiving seismic data that includes data d recorded by the seismic receiver and data related to the first and second vibratory seismic sources; computing a source separation matrix based on the data related to the first and second vibratory seismic sources; calculating first and second earth impulse responses HA and HB corresponding to the two vibratory seismic sources, respectively, based on the data d recorded by the seismic receiver, the data related to the two vibratory seismic sources and the source separation matrix; and separating the signals recorded by the seismic receiver based on the first and second earth impulse responses HA and HB such that signals the two vibratory seismic sources are disentangled.

公开(公告)号：US20170176619A1

公开(公告)日：2017-06-22

申请号：US15348598

申请日：2016-11-10

Applicant: BP Corporation North America Inc.

Inventor： Raymond Lee Abma

IPC: G01V1/38

CPC classification number: G01V1/3808 ,  G01V1/005 ,  G01V1/006 ,  G01V1/3861 ,  G01V2210/121 ,  G01V2210/127 ,  G01V2210/1293

Abstract: A method for use in marine seismic surveying includes: towing at least a portion of a marine seismic survey spread; imparting a composite swept seismic signal from the marine seismic survey spread, the composite swept seismic signal including a plurality of randomized subsweeps having different frequencies relative to one another and being emitted in parallel; and receiving a respective return for each of the subsweeps.

公开(公告)号：US20160341836A1

公开(公告)日：2016-11-24

申请号：US15114551

申请日：2015-01-20

Applicant: CGG SERVICES SA

Inventor： Gordon POOLE

IPC: G01V1/36

CPC classification number: G01V1/36 ,  G01V1/28 ,  G01V2210/127 ,  G01V2210/57

Abstract: A computing device and a method for processing seismic data associated with a surveyed subsurface. The method includes receiving at least first and second seismic data sets that were recorded with different spatial sampling and different temporal bandwidths; using the first seismic data to guide a processing of the second seismic data; and generating an image of the subsurface based on processed second seismic data.

Abstract translation: 一种用于处理与受测地下相关的地震数据的计算装置和方法。 该方法包括至少接收具有不同空间采样和不同时间带宽记录的第一和第二地震数据集; 使用第一地震数据来指导第二地震数据的处理; 以及基于经处理的第二地震数据生成地下图像。

公开(公告)号：US20160187511A1

公开(公告)日：2016-06-30

申请号：US14868895

申请日：2015-09-29

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Peter M. EICK ,  Joel D. BREWER ,  Frank D. JANISZEWSKI

IPC: G01V1/36 ,  G01V1/38

CPC classification number: G01V1/3861 ,  G01V1/003 ,  G01V1/005 ,  G01V1/3808 ,  G01V2210/127

Abstract: Systems and methods for generating seismic signal include using a conventional airgun array and specifically detunes the timing of the array so individual airguns are not fired at the same time and with their interacting bubbles form a unique composite pulse that can be separated by various means out of a seismic record to form the shotpoint. The advantage of this approach is a lower overall noise envelope in the water minimizing impact on the marine mammals and it allows multiple arrays to be fired in close spatial and timing proximity with minimal to no interference.

Abstract translation: 用于产生地震信号的系统和方法包括使用常规的气枪阵列并且特别地使阵列的定时失谐，使得各个气枪不同时发射，并且其相互作用的气泡形成独特的复合脉冲，该复合脉冲可以通过各种装置从 形成射击的地震记录。 这种方法的优点是在水中较低的整体噪声包络使对海洋哺乳动物的影响最小化，并且其允许以极小的至无干扰在紧密的空间和定时接近中激发多个阵列。

公开(公告)号：US20160131776A1

公开(公告)日：2016-05-12

申请号：US14894560

申请日：2014-06-25

Applicant: CGG SERVICES SA

Inventor： Kaelig CASTOR ,  Thomas BIANCHI ,  John SALLAS

IPC: G01V1/00

CPC classification number: G01V1/005 ,  G01V2210/1214 ,  G01V2210/127

Abstract: Computing device, computer software and methods for generating sweep signals corresponding to plural sources that generate seismic waves. The method includes selecting (502) a nominal sweep signal (S0); applying (512) a perturbation (P) to the nominal sweep signal (S0); and calculating (518) the sweep signals (Sn) by varying the perturbation (P), each sweep signal corresponding to a seismic source.

Abstract translation: 用于产生对应于产生地震波的多个源的扫描信号的计算设备，计算机软件和方法。 该方法包括选择（502）标称扫描信号（S0）; 将（512）扰动（P）应用于标称扫描信号（S0）; 以及通过改变扰动（P）来计算（518）扫描信号（Sn），每个扫描信号对应于地震源。