Salton Sea Scientific Drilling Project (SSSDP): Phase 2

该项目涉及对索尔顿海科学钻探项目首席科学家的支持。在该项目的第一阶段，国家2-14的研究井深达3219米，遇到了355摄氏度的温度和含有23wt%TDS的富金属卤水。所获得的钻探岩心显示了从松散沉积向绿片岩相变质的过渡。40多个不同的调查小组参与了调查，资金来自一项跨部门协议(NSF、美国能源部、美国地质调查局)。第二阶段计划将重点放在油藏工程和地球化学采样上。将在2-14州以北约1.5公里处钻一口新井(威尔逊1-12井)，目标深度为900至1800米，温度应达到210-305摄氏度。将获得岩石岩屑、温度、压力和电缆测井，并对第一批被渗透的可采层进行短期流动测试，以便从浅层油藏中采样较低矿化度的流体。然后，威尔逊1-12将被用作2-14州深层油藏长期流动测试(持续时间长达30天)的处置井。从这两口井获得的新数据和样品将总结出SSSDP最初的目标。该项目将开展的工作包括：(A)为规划和实施两口井的抽样和测试提供科学投入；(B)必要时与能源部、科学实验委员会和机构间委员会联络；(C)从威尔逊1-12井获得、描述和管理钻屑；(D)必要时协调现场科学采样和测量；(E)为不能出席的其他调查人员收集流体样本；(F)编辑关于SSSDP第一阶段科学成果的会议记录。

This project involves support for the Chief Scientist of the Salton Sea Scientific Drilling Project. In Phase I of the project the research borehole, State 2-14, reached 3,219 m deep, encountering temperatures 355oC and metal-rich brines containing 23 wt% TDS. The drill cores obtained demonstrate a transition from unconsolidated sediments to greenschist facies metamorphism. More than 40 different groups of investigators participated, funded by an interagency agreement (NSF, DOE, USGS). The Phase II program will focus on reservoir engineering and geochemical sampling. A new well (Wilson 1-12) will be drilled approximately 1.5 km north of the State 2-14 with a target depth of 900 to 1,800 m where temperatures of 210-305oC should be reached. Rock cuttings, temperature, pressure and wireline logs will be obtained and a short-term flow test of the first producible zones penetrated will permit sampling lower salinity fluids from the shallow reservoir. The Wilson 1-12 will then be used as a disposal well for long term flow tests (up to 30 days duration) of the deep reservoir in the State 2-14. The new data and samples obtained from these two wells will conclude the original objectives of the SSSDP. The work to be performed in this project includes: (a) scientific input to planning and implementing sampling and testing of the two wells; (b) liaison with the DOE, the Science Experiments Committee and the interagency committee, as necessary; (c) obtaining, describing and curating drill cuttings from the Wilson 1-12; (d) coordination of on-site scientific sampling and measurements, as necessary; (e) collection of fluid samples for other investigators who cannot be present; and (f) editing the conference proceedings on the scientific results of Phase I of the SSSDP.