Abstract
ABSTRACT Five logging tools were developed for collecting data in the DOE-sponsored Salton Sea Scientific Drilling Project (SSSDP) well. The tools were designed to function at temperatures up to 400°C (752°F) and were successfully operated in the well at temperatures of 360°C (680°F). All of the tools—mechanical units for measuring and recording temperature, pressure, and flow rate; an electronic memory tool for measuring and recording temperature and pressure; and a special purpose battery pack for powering a downhole fluid sampler—are designed for slickline operation. In each, selected critical components are placed inside a dewar that provides thermal protection for a limited time. This paper discusses the tools, their development and operation, the results from their use in the SSSDP well, and potential extensions to geothermal and gas well applications.
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