Long-Term Monitoring of Off-Axis Hydrogeology on the Costa Rica Rift Using an Instrumented Wireline Multi-Packer System

OCE 98-19316Becker：推荐的项目将开发和部署两种可电缆部署的新一代仪器式井眼密封（循环消除改造套件或CORKs），它们将集成仪表式多封隔器。这些集成系统将由Scripps海洋研究所海洋物理实验室的电缆控制车辆完全部署和恢复，使这些下一代CORKs的安装和恢复成为可能，而不是ODP钻井船JOIDES Resolution。这两个系统将安装在504B孔和附近的896A孔内，用于测量哥斯达黎加裂谷南侧上部海洋地壳内的水文地质流体流动和过程。该电缆系统的开发满足了1997年12月JOI/ ussp主办的“先进软木塞”研讨会提出的未来软木塞开发的两个原则建议：1)独立密封和监测多个地层区域；2)最大限度地利用电缆进入密封井眼。

OCE 98-19316Becker--The recommended project will develop and deploy two wireline-deployable, new-generation instrumented borehole seals (Circulation Obviation Retrofit Kits or CORKs) that will integrally contain instrumented multi-packers. These integrated systems will be fully deployable and recoverable by the Marine Physical Lab, Scripps Institution of Oceanography wireline Control Vehicle, making installation and recovery of these next-generation CORKs possible by ships of convenience rather than the ODP drillship JOIDES Resolution. These two systems will be installed within Hole 504B and the nearby Hole 896A to measure in-situ hydrogeological fluid flow and processes within the upper oceanic crust on the south flank of the Costa Rica Rift. Development of this wireline system fulfills the two principle recommendations for future CORK development proposed by the December, 1997 JOI/USSP-sponsored workshop on "Advanced CORKs"- that of 1) independent sealing and monitoring of multiple formations zones; and 2) maximizing wireline access to sealed boreholes.