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- W2557062017 abstract "Discharge testing of newly-drilled wells, particularly in exploratory or expansion areas is an important activity in any geothermal development. The data obtained in such activity is essential in resource evaluation that will determine the level of development and production. During the test, the wells are discharged to silencers where the brine is separated at atmospheric pressure and temperature. In such condition, silica supersaturates and causes deposition problems along the discharge lines and in the injection well. Such situation hampers the completion of the tests and damages the injection well. The usual practice to mechanically clean the clogged lines and work-over/acidize the injection well are tedious, time-consuming, and very costly. The use of silica inhibitor during discharge testing is an alternative method that could ensure completion of the tests in a timely and less-costly manner. Such method was applied and proven effective at the Bacman geothermal field, Tanawon sector. A phosphinocarboxylic acid copolymer inhibitor was used to treat the brine at 8 ppm dosage. Results showed that silica deposition rate was reduced from 0.22 mm/day (untreated/diluted) to 0.04 mm/day. This prolonged the effective capacity of the discharge lines and injection well and resulted to the completion of the test in a timely and cost-effective manner. 1. BACKGROUND The Tanawon (TW) sector is one of the three main expansion areas of the 130-MW Bacon-Manito Geothermal Business Unit (BGBU). It is located at the southern part of the field (Figure 1) and currently has three production wells (TW1D, TW2D, and TW4D) and one reinjection well (TW1RD). Since it is a new expansion area, it’s long-term sustainability and estimated field capacity needs to be evaluated. Hence the wells have to be discharged individually and simultaneously for a reasonable period of time. During the test, the wells are discharged at atmospheric condition thru silencers and the separated brine is disposed via a cold reinjection system consisting of catchments and alvenius lines to TW1RD at the injection pad." @default.
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- W2557062017 date "2015-01-01" @default.
- W2557062017 modified "2023-09-27" @default.
- W2557062017 title "Silica Inhibitor Application during Medium-Term Discharge Tests of Geothermal Wells: The BacMan Geothermal Field Experience" @default.
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