Static Temperature Survey At Vale Hot Springs Area (Combs, Et Al., 1999)
Exploration Activity: Static Temperature Survey At Vale Hot Springs Area (Combs, Et Al., 1999)
|Exploration Activity Details|
|Location||Vale Hot Springs Area|
|Exploration Technique||Static Temperature Survey|
Numerous temperature logs were taken with Sandia's platinum-resistance-thermometer (PRT) tool which along with a Sandia logging truck remained on-site for the entire project. Static temperature logs (no flow in hole) were done with this tool when coring operations were suspended for bit trips, rig maintenance, or other time intervals that would permit the hole to warm up near its static temperature gradient. After the hole reached TD, a pressure-temperature storage ("memory") tool was also used to compare temperature data with that previously taken by the PRT tool and to collect downhole pressure data during the injection and shut-in tests. This tool, part of Sandia's on-going program in Instrumentation Development, has a Dewar flask around an electronic memory which stores data (approximately 10,000 data points total capacity) that can later be downloaded into a laptop computer. This tool's primary advantage is its ease of operations since it can be run into the hole on the rig'swireline and specialized logging trucks are not required. As an experiment, the tool was also run into the hole inside a core-barrel "cage" while tripping the drillstring and gave good results.
- Jim Combs, John T. Finger, Colin Goranson, Charles E. Hockox Jr., Ronald D. Jacobsen, Gene Polik (1999) Slimhole Handbook- Procedures And Recommendations For Slimhole Drilling And Testing In Geothermal Exploration