Effects of Hydrogen Sulfide
The effect of hydrogen sulfide on metals, known variously as metal fatigue, hydrogen embrittlement, and sulfide stress cracking, can cause failure of the drill string during a well control situation. Such failure can result in the release of hazardous concentrations of H2S in the drilling area. Careful selection of resistant metals and chemical treatment of drilling fluids can effectively guard against such failure.
Iron sulfide is a byproduct of many production operations and may spontaneously combust with air. Flaring operations associated with H2S production will generate Sulfur Dioxide (S02), another toxic gas.
Active monitoring for hydrogen sulfide gas and good planning and training programs for workers are the best ways to prevent injury and death.
Knowledge Check Choose the best answer for the question.
7-6. According to the text, what can happen as a result of the effect of hydrogen sulfide on metals, during the well control process?
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