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H2S abatement plan during drilling operations

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Title:H2S abatement plan during drilling operations
Authors:Puna Geothermal Venture
Puna Geothermal Venture
air quality
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LC Subject Headings:Hydrogen sulfide--Environmental aspects--Hawaii--Puna
Geothermal power plants--Environmental aspects--Hawaii--Puna Region
Geothermal resources--Environmental aspects--Hawaii--Puna Region
Air quality--Standards--Hawaii
Date Issued:1991
Publisher:Puna Geothermal Venture
Citation:Puna Geothermal Venture. 1991. H2S abatement plan during drilling operations. Hilo (HI): Puna Geothermal Venture.
Abstract:"In the event that an unplanned venting of geothermal steam occurs during drilling operations, a plan has been established to abate the resulting HzS emissions.
If a surge of geothermal fluid occurs during drilling, a rupture disc in the blowout prevention stack will break at between 150 psi and 175 psi, allowing the steam, gas, and fluid to flow through a vent line to an atmospheric separator (Figure 1).
The flow of geothermal steam, fluid, and gas will be treated by injecting an aqueous solution of sodium hydroxide into the vent line. In the event that the flow of geothermal fluid is dry steam or nearly so, additional water can be injected into the vent line using the rig pumps.
In order to determine the concentration of HzS emitted to the atmosphere, discrete samples of the steam will be withdrawn from the top of the atmospheric separator and analyzed using an accurate chemical test."
Pages/Duration:10 pages
Appears in Collections: The Geothermal Collection

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