Foamed Latex Slurry and Reverse-Circulation Cementing Enable Drilling in Lost-Circulation Zones
- Key words
- Reverse Circulation; Latex; Perlite; Lower ECDs; Foamed Cement; Lost circulation
- Conference
- Geothermal Resources Council Transactions
- Year
- 2009
- Session
- Cementing; Lost circulation
- Language
- English
Abstract
A central California geothermal company has combined the technologies of reverse-circulation cementing (RCC), foamed-cement slurries, latex additives, and a lightweight additive made of crushed volcanic rock to cement a large-diameter casing through naturally fractured, geothermal zones presenting high risk for lost circulation (LC). This case-history paper presents product descriptions, design considerations, and job details applicable to the operation.
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