Ca(OH)[sub 2]-treated ceramic microsphere
Abstract
Geothermal wells with lost circulation problems are treated with a lightweight, high temperature (i.e. 350 C) cement slurry which incorporates pressure resistant hollow microspheres into the slurry wherein the spheres have been pretreated with an alkali compound such as Ca(OH)[sub 2] for up to 20 hours and at 100--300 C. Preferably, the alkali solution is a saturated aqueous solution and the treatment is for 10 hours. 2 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7270122
- Patent Number(s):
- 4822422
- Application Number:
- PPN: US 7-106269
- Assignee:
- Associated Universities, Inc., Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 9 Oct 1987
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 15 GEOTHERMAL ENERGY; 36 MATERIALS SCIENCE; CEMENTS; FABRICATION; GEOTHERMAL WELLS; LOST CIRCULATION; REPAIR; MICROSPHERES; ALKALINE HYDROLYSIS; BUILDING MATERIALS; CHEMICAL REACTIONS; DECOMPOSITION; HYDROLYSIS; LYSIS; MATERIALS; SOLVOLYSIS; WELLS; 150901* - Geothermal Engineering- Drilling Technology & Well Hardware; 360601 - Other Materials- Preparation & Manufacture
Citation Formats
Sugama, Toshifumi. Ca(OH)[sub 2]-treated ceramic microsphere. United States: N. p., 1989.
Web.
Sugama, Toshifumi. Ca(OH)[sub 2]-treated ceramic microsphere. United States.
Sugama, Toshifumi. Tue .
"Ca(OH)[sub 2]-treated ceramic microsphere". United States.
@article{osti_7270122,
title = {Ca(OH)[sub 2]-treated ceramic microsphere},
author = {Sugama, Toshifumi},
abstractNote = {Geothermal wells with lost circulation problems are treated with a lightweight, high temperature (i.e. 350 C) cement slurry which incorporates pressure resistant hollow microspheres into the slurry wherein the spheres have been pretreated with an alkali compound such as Ca(OH)[sub 2] for up to 20 hours and at 100--300 C. Preferably, the alkali solution is a saturated aqueous solution and the treatment is for 10 hours. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {4}
}
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