物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
1期
87-89
,共3页
节点采集%复杂水域%单炮拼接%海陆资料衔接
節點採集%複雜水域%單砲拼接%海陸資料銜接
절점채집%복잡수역%단포병접%해륙자료함접
nodes acquisition%complicated waters%CDP combination%marine and land seismic data linking up
在海上地震勘探数据采集中,会遇到复杂的过渡带水域,其水深变化剧烈,既有水深达二三百米的深水区,也有极浅的、密布的暗礁、小岛和浅滩等浅水区和陆地区。在浅水区,无法采用拖缆船采集施工,在深水区海底电缆又无法达到如此作业深度。在这样的区域内,常规的海上地震数据采集将会出现地震资料缺失带。节点采集技术的作业范围从浅水到700 m水深,能够弥补深水拖缆和海底电缆两种采集方式的短板,可适应于复杂过渡带水域的地震采集,避免地震资料空白区,有利于区域整体勘探、开发。
在海上地震勘探數據採集中,會遇到複雜的過渡帶水域,其水深變化劇烈,既有水深達二三百米的深水區,也有極淺的、密佈的暗礁、小島和淺灘等淺水區和陸地區。在淺水區,無法採用拖纜船採集施工,在深水區海底電纜又無法達到如此作業深度。在這樣的區域內,常規的海上地震數據採集將會齣現地震資料缺失帶。節點採集技術的作業範圍從淺水到700 m水深,能夠瀰補深水拖纜和海底電纜兩種採集方式的短闆,可適應于複雜過渡帶水域的地震採集,避免地震資料空白區,有利于區域整體勘探、開髮。
재해상지진감탐수거채집중,회우도복잡적과도대수역,기수심변화극렬,기유수심체이삼백미적심수구,야유겁천적、밀포적암초、소도화천탄등천수구화륙지구。재천수구,무법채용타람선채집시공,재심수구해저전람우무법체도여차작업심도。재저양적구역내,상규적해상지진수거채집장회출현지진자료결실대。절점채집기술적작업범위종천수도700 m수심,능구미보심수타람화해저전람량충채집방식적단판,가괄응우복잡과도대수역적지진채집,피면지진자료공백구,유리우구역정체감탐、개발。
Marine seismic acquisition often meets with some transitional zones,which are very complicated and have rapidly changeable water depth that could sometimes reach 300 m in depth;meanwhile,lots of islands and reefs are spread there.It is too risky for the ma-rine steamship to conduct work,and OBC fails to reach the work depth.Therefore,there are some seismic data gaps in these zones.The Z700 ocean bottom node could acquire seismic data from the shallow water up to 700 m in depth and is capable of filling up the data gaps and linking up data obtained form the whole region,thus favorable for the integration of the oilfield exploration.