Preliminary design of Gas Gathering (100 mmsfd of high H2S (upto 10%) associated natural gas) includes piggable pipelines from different gas sources (50 psi) and joining Slug Cather followed by Gas Compressor (25 psi-suction pressure). But now pressure at gas sources are proposed to get lower at 40 psi. This causes to re-design the gas gathering pipeline network (specifically from pipe diameter point of view with pipeline profile already finalized). Do anyone have experience in operating low pressure gas gathering piping network? Is it feasible to operate at such low pressure drop available? Any typical problems encountered in such systems? Looking eagerly for your valuable inputs please.
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