Seismic data partial superposition recording method and system

A seismic data and recording method technology, applied in the field of energy development and exploration, can solve the problems of difficult separation of seismic data from two shots, achieve the effect of increasing field acquisition costs, increasing the number of vertical coverage, and meeting production needs

Active Publication Date: 2021-06-18
CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, it is still very difficult to separate the fully overlapped two-shot seismic data

Method used

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  • Seismic data partial superposition recording method and system
  • Seismic data partial superposition recording method and system
  • Seismic data partial superposition recording method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This embodiment provides a partial superposition recording method for seismic data, including the following steps:

[0059] 1) According to seawater survey data or historical seismic data, obtain the water depth range h of seawater in the entire acquisition construction area 1 ~ h 2 , h 1 ≤ h 2 , and according to the obtained water depth range, divide the entire acquisition construction area to obtain at least one acquisition area, which can be specifically:

[0060] ① when (h 2 -h 1 ) / 21 When , it is considered that the change of water depth in the entire collection area is small, and the entire collection construction area is taken as a collection area for collection;

[0061] ② when (h 2 -h 1 ) / 2≧h 1 , it is considered that the water depth in the entire acquisition construction area varies greatly. At this time, the entire acquisition construction area is divided into two acquisition areas with the average water depth as the boundary, or divided according to ...

Embodiment 2

[0106] This embodiment provides a seismic data partial superposition recording system, including:

[0107] The collection area division module is used to obtain the water depth range of seawater in the entire collection construction area, and divide the entire collection construction area according to the acquired water depth range to obtain at least one collection area;

[0108] The recording time calculation module is used to select a certain acquisition area after division, and determine the recording time during seismic data acquisition in the acquisition area;

[0109] The acquisition parameter determination module is used to determine the acquisition parameters of the acquisition area according to the recording time of the seismic data acquisition in the acquisition area, the need of bin division in the seismic data processing and the streamer length of the acquisition seismic data;

[0110] The seismic data acquisition, processing and analysis module is used to perform ...

Embodiment 3

[0116] This embodiment provides a processing device corresponding to the seismic data partial superposition recording method provided in Embodiment 1. The processing device may be a processing device for a client, such as a mobile phone, a notebook computer, a tablet computer, a desktop computer, etc. , to implement the method of Embodiment 1.

[0117] The processing device includes a processor, a memory, a communication interface and a bus, and the processor, the memory and the communication interface are connected through the bus to complete mutual communication. A computer program that can run on the processor is stored in the memory, and when the processor runs the computer program, the partial superposition recording method for seismic data provided in Embodiment 1 is executed.

[0118] In some implementations, the memory may be a high-speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least...

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Abstract

The invention relates to a seismic data partial superposition recording method and system, and the method is characterized in that the method comprises the following steps: 1), dividing a whole collection construction region, and obtaining at least one collection region; 2) selecting a certain acquisition area after division, and determining the recording time of seismic data acquisition in the acquisition area; 3) determining acquisition parameters of the acquisition area according to the recording time during acquisition of the seismic data in the acquisition area, the need of surface element division in seismic data processing and the length of a towing cable for acquiring the seismic data; 4) entering the step 2) to reselect a certain divided acquisition area until the acquisition parameters of all the acquisition areas are determined; and 5) according to the acquisition parameters of each acquisition area, performing seismic acquisition operation in the field to obtain seismic data of different acquisition areas, and processing and analyzing the acquired seismic data indoors to complete partial overlapping recording of the seismic data, and the method can be widely applied to the field of energy development and exploration.

Description

technical field [0001] The invention relates to a partial superposition recording method and system of seismic data, belonging to the field of energy development and exploration. Background technique [0002] Marine seismic data acquisition usually includes on-board navigation, seismic data excitation source and seismic data recording equipment. The seismic exploration ship usually tows one or more sensor streamers behind the ship, and the seismic data excitation source is excited according to the set time, resulting in The seismic data propagates to the seawater and the strata below, and the seismic data encounters the stratum interface to generate an upwardly propagated reflection signal, and finally propagates to the sea surface, where it is detected by the sensors on the streamer and recorded by the recording equipment, as shown in figure 1 As shown, the deeper the formation interface is, the longer it takes for the signal to reflect back, and the required recording time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/24G01V1/26G01V1/38
CPCG01V1/247G01V1/26G01V1/3808
Inventor 王建花张金淼张益明王艳冬仝中飞牛聪王小六黄小刚凌云
Owner CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD
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