The Long Valley Well: Phase II operations
Phase II of the Long Valley Exploratory Well was completed to a depth of 7588 feet in November 1991. The drilling comprised two sub-phases: (1) drilling 17-1/2 inch hole from the Phase I casing shoe at 2558 feet to a depth of 7130 feet, plugging back to 6826 feet, and setting 13-3/8 inch casing at 6825 feet, all during August--September 1991; and (2) returning in November to drill a 3.85-inch core hole deviated out of the previous wellbore at 6868 feet and extending to 7588 feet. Ultimate depth of the well is planned to be 20,000 feet, or at a bottomhole temperature of 500{degrees}C, whichever comes first. Total cost of this drilling phase was approximately $2.3 million, and funding was shared about equally between the California Energy Commission and the Department of Energy. Phase II scientific work will commence in July 1992 and will be supported by DOE Office of Basic Energy Sciences, DOE Geothermal Division, and other funding sources.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5042675
- Report Number(s):
- SAND-92-0675C; CONF-920378--5; ON: DE92016089
- Country of Publication:
- United States
- Language:
- English
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The Long Valley Well - Phase II Operations
Phase 2 drilling operations at the Long Valley Exploratory Well (LVF 51--20)
Related Subjects
150303 -- Geothermal Exploration & Exploration Technology-- Exploratory Drilling & Well Logging
150900* -- Geothermal Engineering
BOREHOLES
CALIFORNIA
CAVITIES
DEVELOPED COUNTRIES
DOCUMENT TYPES
DRILLING
GEOTHERMAL WELLS
Geothermal Legacy
NORTH AMERICA
PROGRESS REPORT
USA
WELL CASINGS
WELL DRILLING
WELL LOGGING
WELLS