| Title | Estimating the Quantity of Silica Deposited in the Reservoir Around an Injection Well |
|---|---|
| Authors | E. K. Mroczek, S. P. White & D. Graham |
| Year | 2002 |
| Conference | New Zealand Geothermal Workshop |
| Keywords | |
| Abstract | A month long silica-scaling trial, using waste fluid at 110?C determined quantitatively the silica deposited in SS pipes packed with zirconia beads. This data was used to derive the silica deposition rate, which was used to model silica deposition in the reservoir surrounding the injection well. The injection well had exhibited decreasing injectivity due to silica plugging. The results of the simulation showed that negligible silica was depositing greater than 40 m from the well. A new well was drilled 75 m from the old injection well and there was no evidence of any recent silicification in the cuttings. |