SY-T6590-2004-IMAGE地震数据采集系统检验项目及技术指标.pdf

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1、ICS75.180.10E11备案号:14071-2004SY中华人民共和国石油天然气行业标准SY/T6590-2004IMAGE地震数据采集系统检验项目及技术指标ThecheckingitemsandtechnicalspecificationsforIMAGEseismicdataacquisitionsystem2004一07一03发布2004-11-01实施国家发展和改革委员会发布SY/T6590-2004目次前言·····························································

2、··················································⋯⋯n1范围···················。········································································，··················⋯⋯12系统检验项目及技术指标·········································································一“““’‘”‘’12.1日检验···

3、·············································································，························⋯⋯12.2月检验·······································································································⋯⋯12.3年检验···················································

4、·······················································，⋯2SY/T6590-2004前言本标准由石油物探专业标准化委员会提出并归口。本标准起草单位:中国石化集团胜利石油管理局地球物理勘探开发公司。本标准主要起草人:李生武、侯念利、张栋、赵金良、陈建江。SY/T6590-2004IMAGE地震数据采集系统检验项目及技术指标1范围本标准规定了IMAGE地震数据采集系统的日检验、月检验、年检验项目及技术指标。本标准适用于IMAGE地震数据采集系统的测试及该系统的技术检验。2系统检验项目及技术

5、指标2.1日检验日检验项目包括:a)采集站脉冲响应(pulseamplifier);b)检波器脉冲响应(pulsegeophone);c)震源相关子波测试(sourcewavelettest).2.1.1采集站脉冲响应(pulseamplifier)要求:a)用生产因素录制当日首炮排列的采集站脉冲响应并绘图;b)各道波形一致，振幅和相位无视差。2.1.2检波器脉冲响应(pulsegeophone)要求:a)用生产因素录制当日首炮排列的检波器脉冲响应并绘图;三维施工排列接收道数在1500道以上时，正式生产前可采用单线分时段方式录取;b)各道工作

6、正常，同类型检波器波形一致，相位无明显视差;c)同类型检波器脉冲振幅差小于20%;d)遇特殊地域或不可克服的干扰造成的不正常道在日检记录上注明原因。2.1.3层源相关子波测试(sourcewavelettest)在采用可控震源生产时，进行该项测试。要求:震源控制系统产生的参考信号相关子波波形平滑，无明显畸变。2.2月检验在野外施工生产过程中，按当月的生产因素录取以下测试项目:a)系统噪音测试(instrumentnoisetest);b)总谐波畸变测试(totalharmonictest);c)道间串音测试(crossfeedeven/odd

7、channelstest);d)共模抑制比测试(commonmoderejectiontest);e)脉冲响应测试(pulseamplifiertest);f)增益精度测试(amplitudeaccuracytest).要求:当月所有在用采集站测试全部合格，测试结果存盘并绘制图形或打印数字结果;每道记录样点数不得少于1024个。2.2.1系统嗓音侧试(instrumentnoisetest)测试指标见表1.SY/T659口卜-20042.2.2总谐波畸变测试(totalharmonictest)总谐波畸变测试指标小于。.000500,2.2.

8、3道间串音测试(crossfeedeven/oddchannelstest)要求有信号道与无信号道输出之比大于l00dB.2.2.4共模抑制比测试《commonmo