Reverse Foam Latex Cementing 11? Inch Intermediate Casing in PGV Well KS-15
- Key words
- Geothermal; reverse cementing; foam; latex; nitrogen; lost circulation; equivalent circulating density; design; Hawaii; Puna; rift zone; volcano; inner-string
- Location
- Puna, Hawaii
- Conference
- Geothermal Resources Council Transactions
- Year
- 2013
- Session
- Cementing; Lost circulation
- Language
- English
Abstract
Many challenges arise when cementing geothermal wells. Lost circulation and temperature are the main culprits for increased cost when trying to achieve zonal isolation. At the Puna geothermal field, extreme lost circulation and bottom hole static temperatures in excess of 500°F are not uncommon. The extreme conditions, coupled with the remoteness to drilling service providers, represent a significant challenge. Reverse cementing was used to successfully complete a job in a challenging environment and also significantly reduce cost in the cementing phase of well completion. A demonstration of proper planning, designing, and execution of the job is presented.
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