Well M is an appraisal well in the Mingbulak structure of Fergana basin, Uzbekistan, which contains two hydrocarbon reservoirs (upper and lower Tertiary). Upper Tertiary is a porous sandstone ...

Hydrogen sulfide, a colorless gas that smells like rotten eggs, is produced naturally from decaying matter. This gas is lethal to breathe in, and hydrogen sulfide present in high concentrations can ...