CN106842294A - 一种滩涂地带obc采集资料分离方法 - Google Patents

一种滩涂地带obc采集资料分离方法 Download PDF

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CN106842294A
CN106842294A CN201510883684.9A CN201510883684A CN106842294A CN 106842294 A CN106842294 A CN 106842294A CN 201510883684 A CN201510883684 A CN 201510883684A CN 106842294 A CN106842294 A CN 106842294A
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wave detector
sps
small line
dual sensor
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CN106842294B (zh
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王彦军
董伟
于海铖
路进锋
徐鑫
周小平
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China Petroleum and Chemical Corp
Geophysical Research Institute of Sinopec Shengli Oilfield Co
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China Petroleum and Chemical Corp
Geophysical Research Institute of Sinopec Shengli Oilfield Co
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28Processing seismic data, e.g. for interpretation or for event detection

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  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
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  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

本发明公开了一种滩涂地带OBC采集资料分离方法,该方法是在定义观测系统之前,通过识别SPS中道增量号来区分双检检波器与小线检波器记录,在分离开小线检波器道的基础上进一步分离双检检波器的P、Z道,生成新的P道SPS、Z道SPS和陆检检波器道SPS。本发明是解决了滩涂地带含有双检检波器与小线检波器在加载观测系统之后双检检波器P、Z道与小线检波器道在单炮中无规律出现难以分离的难点,实现了资料的准确、快速分离。

Description

一种滩涂地带OBC采集资料分离方法
技术领域
本发明属于油气勘探地震资料处理领域,是一种滩涂地带OBC采集资料分离方法。
现有技术
目前,在滩涂地带OBC采集的资料双检检波器P、Z道与小线检波器道在单炮中无规律出现难以分离,目前,OBC资料的分离方法是奇偶分离,即,把加好观测系统的地震数据进行奇数道与偶数道分离,这种方法适用于海上,不适用于滩涂地带,滩涂地带双检检波器与小线检波器随地表情况无规律出现,奇偶分离法无法适用。
发明内容
本发明的目的是针对现有技术存在的问题,提出一种滩涂地带OBC采集资料分离方法,解决滩涂地带含有双检检波器与小线检波器难以分离P、Z道和小线检波器道的问题。
本发明的技术方案是:
在定义观测系统之前,通过识别SPS中道增量号来区分双检检波器与小线检波器记录,在分离开小线检波器道的基础上进一步分离双检检波器的P、Z道,生成新的P道SPS、Z道SPS和陆检检波器道SPS。
发明效果
本发明的方法,有着其他方法不具备的优势,其具体优势和特点表现在以下几个方面:
第一、方法效果的可靠性。解决了滩涂地带含有双检检波器与小线检波器难以分离P、Z道和小线检波器道的问题,通过识别SPS中道增量号来区分双检检波器与小线检波器记录,结果准确可靠。
第二、方法效率高。通过SPS分离数据,避开了在加载观测系统之后双检检波器P、Z道与小线检波器道在单炮中无规律出现难以分离的难点,实现滩涂地带OBC采集资料快速、准确的进行P、Z道喝小线检波器道德分离,为后续OBC资料的处理奠定基础,比从地震数据体上分离数据效率高。
附图说明
图1为未分离的关系文件数据;
图2为分离出的小线检波器道关系文件数据;
图3为分离出的双检检波器P道关系文件数据;
图4为分离出的双检检波器Z道关系文件数据;
图5为未分离的关系文件加载到segy上显示的单炮;
图6为分离出的小线检波器接收的道数据;
图7为分离出的P道数据;
图8为分离出的Z道数据。
具体实施方式
下文特举出较佳实施例,并配合附图,作详细说明如下。
首先,取野外记录的SPS文件,对SPS中关系文件进行分析。在标准SPS关系文件第47列上,其值表示的是道增量,小线检波器记录的道增量值为1,双检检波器记录的道增量为2。如图1所示,未分离的关系文件中,第47列的道增量有1也有2,双检检波器道与小线检波器道同时存在。
其二,分离小线检波器道与双检检波器道。把x文件中道增量值为1的道所在的行的数据全部选出,保存到一个新的文件xs中,该文件只包含道增量为1的行,即获取了所有小线检波器记录道的关系文件,如图2;
其三,把x文件中道增量值为2的道所在的行的数据全部选出,选出的数据为双检检波器所记录的道,把选出的数据按奇、偶行的区别输出到两个文件中,产生了两个新文件,这两个文件中一个是双检检波器记录的P道信息xp文件,如图3,另一个是Z道信息xz文件,如图4;
其四,利用步骤2和步骤3中生成的新关系文件和原始SPS中的s文件、r文件重新组合,形成3个新的SPS文件,s文件、r文件、xs文件,s文件、r文件、xp文件,s文件、r文件、xz文件,通过新的SPS文件定义观测系统,并加载到地震数据中,实现数据的分离,如图5,图6。

Claims (1)

1.一种滩涂地带OBC采集资料分离方法,其特征在于:通过识别SPS中道增量号来区分双检检波器与小线检波器记录,在分离开小线检波器道的基础上进一步分离双检检波器的P、Z道,生成新的P道SPS、Z道SPS和陆检检波器道SPS。
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