From Open Energy Information

NEPA Document Collection for: DOI-BLM-CA-670-2010-107
CX at North Brawley Geothermal Area for Geothermal/Well Field,

CX for Drilling Permit for Production Well 78A-6 at North Brawley Geothermal Area

Proposed Action

Ormat proposes to re-drill a new hole at well 78A-6, This hole will be drilled from its current depth of about 8500 to approximately 10000 feet The well will then be tested to determine reservoir characteristics, after which temperature profile of the well will be measured. Finally, Well 78A-6 will be utilized to generate electrical power.

The hole will be drilled with a normal rotary drilling rig. The rig will be equipped with diesel engines, storage tanks, mud pumps, and other typical auxiliary equipment During drilling, the top of the derrick will be approximately 176 ft above ground level. The hole will be drilled using a gel-based mud or gel and polymer drilling fluid to circulate the rock cuttings to the surface where they are removed. The mud will then be circulated. The cuttings will be captured in the containment basin and will subsequently be tested and transported to an approved landfill for disposal.

Approximately 9 to 18 workers will be on location at any given time. The drilling crews will not be living on location.

Data Completion Notes

5/12/2014 - Assigned this CX to the North Brawley Geothermal Area (could also be the Salton Sea Geothermal Area, both fields lie within Imperial Valley. We will need to check the individual well field information for both areas to find this particular well). MB

8/26/2013 - Need lease number, geothermal area (Imperial valley, aded to drop down list?) and GDP application date KW

8/26/2013 - When RMP field is added, add "California Desert Conservation Area (CDCA) 1980 and San Diego County Resource Management Plan (2009)"


Categorical Exclusion Approval: