Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2)

Prevention and dissolution of silica deposits by alkali dosing

Daisuke Fukuda, Yoshitaka Kawahara, Kazuyoshi Osada, Kotaro Maetou, Yasuyuki Hishi, Osamu Kato, Takushi Yokoyama, Ryuichi Itoi, Ichiro Myogan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In order to develop a method for prevention of silica deposition in a reinjection zone, laboratory experiments using reinjection water from the Kakkonda geothermal field were conducted. In the experiments, the reinjection water was cooled from about 130°C to 120°C or 95°C, and then introduced to a porous column that was packed with zirconia beads. Permeability decrease of the column due to deposition of solid onto the beads was monitored by measuring pressure values along the column. Observation of the solid deposits on the beads indicated that aggregation of silica particles on the beads was the predominant deposition process. To prevent or dissolve the silica deposits in the column, an alkaline solution was injected into the reinjection water upstream of the column. The alkali dosing at a specified rate prevented and dissolved the silica deposits. The experiments further proved the ability of the intermittent dosing to dissolve the silica deposits. We concluded that the intermittent dosing can be a practical method for inhibiting silica deposition in the reservoir, because the intermittent addition will reduce the amount of alkali to be used, and hence the cost.

Original languageEnglish
Title of host publicationGeothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global
Pages851-854
Number of pages4
Volume36 2
Publication statusPublished - 2012
EventGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012 - Reno, NV, United States
Duration: Sep 30 2012Oct 3 2012

Other

OtherGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012
CountryUnited States
CityReno, NV
Period9/30/1210/3/12

Fingerprint

particulates
reagents
alkalies
dissolving
Dissolution
Deposits
silica
deposits
dissolution
Silica
silicon dioxide
beads
water
Water
Experiments
Geothermal fields
zirconium oxides
Zirconia
upstream
chemical

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

Fukuda, D., Kawahara, Y., Osada, K., Maetou, K., Hishi, Y., Kato, O., ... Myogan, I. (2012). Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2): Prevention and dissolution of silica deposits by alkali dosing. In Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global (Vol. 36 2, pp. 851-854)

Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2) : Prevention and dissolution of silica deposits by alkali dosing. / Fukuda, Daisuke; Kawahara, Yoshitaka; Osada, Kazuyoshi; Maetou, Kotaro; Hishi, Yasuyuki; Kato, Osamu; Yokoyama, Takushi; Itoi, Ryuichi; Myogan, Ichiro.

Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global. Vol. 36 2 2012. p. 851-854.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fukuda, D, Kawahara, Y, Osada, K, Maetou, K, Hishi, Y, Kato, O, Yokoyama, T, Itoi, R & Myogan, I 2012, Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2): Prevention and dissolution of silica deposits by alkali dosing. in Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global. vol. 36 2, pp. 851-854, Geothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012, Reno, NV, United States, 9/30/12.
Fukuda D, Kawahara Y, Osada K, Maetou K, Hishi Y, Kato O et al. Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2): Prevention and dissolution of silica deposits by alkali dosing. In Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global. Vol. 36 2. 2012. p. 851-854
Fukuda, Daisuke ; Kawahara, Yoshitaka ; Osada, Kazuyoshi ; Maetou, Kotaro ; Hishi, Yasuyuki ; Kato, Osamu ; Yokoyama, Takushi ; Itoi, Ryuichi ; Myogan, Ichiro. / Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2) : Prevention and dissolution of silica deposits by alkali dosing. Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global. Vol. 36 2 2012. pp. 851-854
@inproceedings{35dc143abc3e4cca9c3b767584315ef3,
title = "Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2): Prevention and dissolution of silica deposits by alkali dosing",
abstract = "In order to develop a method for prevention of silica deposition in a reinjection zone, laboratory experiments using reinjection water from the Kakkonda geothermal field were conducted. In the experiments, the reinjection water was cooled from about 130°C to 120°C or 95°C, and then introduced to a porous column that was packed with zirconia beads. Permeability decrease of the column due to deposition of solid onto the beads was monitored by measuring pressure values along the column. Observation of the solid deposits on the beads indicated that aggregation of silica particles on the beads was the predominant deposition process. To prevent or dissolve the silica deposits in the column, an alkaline solution was injected into the reinjection water upstream of the column. The alkali dosing at a specified rate prevented and dissolved the silica deposits. The experiments further proved the ability of the intermittent dosing to dissolve the silica deposits. We concluded that the intermittent dosing can be a practical method for inhibiting silica deposition in the reservoir, because the intermittent addition will reduce the amount of alkali to be used, and hence the cost.",
author = "Daisuke Fukuda and Yoshitaka Kawahara and Kazuyoshi Osada and Kotaro Maetou and Yasuyuki Hishi and Osamu Kato and Takushi Yokoyama and Ryuichi Itoi and Ichiro Myogan",
year = "2012",
language = "English",
isbn = "9781622764341",
volume = "36 2",
pages = "851--854",
booktitle = "Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global",

}

TY - GEN

T1 - Laboratory experiments on inhibition of silica particulate deposition in a porous column by dosing of chemical reagents into reinjection water (2)

T2 - Prevention and dissolution of silica deposits by alkali dosing

AU - Fukuda, Daisuke

AU - Kawahara, Yoshitaka

AU - Osada, Kazuyoshi

AU - Maetou, Kotaro

AU - Hishi, Yasuyuki

AU - Kato, Osamu

AU - Yokoyama, Takushi

AU - Itoi, Ryuichi

AU - Myogan, Ichiro

PY - 2012

Y1 - 2012

N2 - In order to develop a method for prevention of silica deposition in a reinjection zone, laboratory experiments using reinjection water from the Kakkonda geothermal field were conducted. In the experiments, the reinjection water was cooled from about 130°C to 120°C or 95°C, and then introduced to a porous column that was packed with zirconia beads. Permeability decrease of the column due to deposition of solid onto the beads was monitored by measuring pressure values along the column. Observation of the solid deposits on the beads indicated that aggregation of silica particles on the beads was the predominant deposition process. To prevent or dissolve the silica deposits in the column, an alkaline solution was injected into the reinjection water upstream of the column. The alkali dosing at a specified rate prevented and dissolved the silica deposits. The experiments further proved the ability of the intermittent dosing to dissolve the silica deposits. We concluded that the intermittent dosing can be a practical method for inhibiting silica deposition in the reservoir, because the intermittent addition will reduce the amount of alkali to be used, and hence the cost.

AB - In order to develop a method for prevention of silica deposition in a reinjection zone, laboratory experiments using reinjection water from the Kakkonda geothermal field were conducted. In the experiments, the reinjection water was cooled from about 130°C to 120°C or 95°C, and then introduced to a porous column that was packed with zirconia beads. Permeability decrease of the column due to deposition of solid onto the beads was monitored by measuring pressure values along the column. Observation of the solid deposits on the beads indicated that aggregation of silica particles on the beads was the predominant deposition process. To prevent or dissolve the silica deposits in the column, an alkaline solution was injected into the reinjection water upstream of the column. The alkali dosing at a specified rate prevented and dissolved the silica deposits. The experiments further proved the ability of the intermittent dosing to dissolve the silica deposits. We concluded that the intermittent dosing can be a practical method for inhibiting silica deposition in the reservoir, because the intermittent addition will reduce the amount of alkali to be used, and hence the cost.

UR - http://www.scopus.com/inward/record.url?scp=84876214488&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84876214488&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9781622764341

VL - 36 2

SP - 851

EP - 854

BT - Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global

ER -