Advanced CORKs for ODP Drilling in the Nankai Trough: Sustained Observations of Subsurface Pressures in an Accretionary Prism

用于南海海槽 ODP 钻探的先进软木塞：对吸积棱镜中地下压力的持续观测

• 批准号: 0083156
• 负责人: Keir Becker
• 金额: $ 31.97万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-10-01 至 2005-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0083156&HistoricalAwards=false
• 关键词: Advanced; CORKs; ODP; Drilling; Nankai

Becker 00-83156Recommended project is for acquisition and instrumentation costs for two Advanced Circulation Obviation Retrofit Kits (A-CORKs) that will be installed on Ocean Drilling Program (ODP) Leg 196. These will be used for sustained observations of subsurface fluid pressures in three stratigraphic regions of the Nankai Trough subduction zone- the oceanic basement of the subducting plate, the decollement between the accretionary wedge and the subducting crust, and in major faults within the accretionary wedge. The advanced CORKs use multiple packer strings to independently seal off several regions of the borehole, in contrast to the original CORK design that integrated fluid pressure measurements over the entire borehole length. The A-CORKs will also allow for eventual sampling of in-situ fluids. This proposal is part of a larger, multi-national effort that includes Canadian and ODP resources in designing and fabricating the A-CORKs, installation of the A-CORKs and associated, Japanese-funded instrument strings by the ODP JOIDES Resolution drillship, and related logging-while-drilling (LWD) occurring in conjunction on the same cruise. Ship and submersible operations for follow-up data recovery and instrument servicing will be funded by the Japanese technology agency JAMSTEC.***

Becker 00- 83156推荐项目是将安装在大洋钻探计划（ODP）第196航次的两个高级循环阻塞物改装套件（A-CORKs）的购置和仪器费用。 这些将用于持续观测南海海槽俯冲带的三个地层区域的地下流体压力-俯冲板块的海洋基底，增生楔和俯冲地壳之间的滑脱层，以及增生楔内的主要断层。 先进的CORK使用多个封隔器管柱来独立地密封井眼的几个区域，与原始的CORK设计相反，原始的CORK设计在整个井眼长度上集成了流体压力测量。 A-CORKs还将允许对现场流体进行最终取样。 该建议是一个更大的多国努力的一部分，包括加拿大和ODP的资源，设计和制造A-CORKs，安装A-CORKs和相关的，日本资助的仪器串由ODP JOIDES决议钻井船，以及相关的随钻测井（LWD）发生在同一巡航。用于后续数据恢复和仪器维修的船舶和潜水作业将由日本技术机构JAMSTEC提供资金。