Feed gas quality limits acid gas removal unit capacity

Plant A is a gas processing and natural gas liquids (NGL) recovery facility designed to process 2.53 Bsft3d of sour associated gas received from four segregated gasoil separation plants (GOSPs). The separated gas is a mixture of solution gas (originally in crude) and cap gas (present in an upper dome over the crude and representing more than 60% of the separated associated gas from the GOSPs). The sour gas is processed for NGL recovery, and some 1.5 Bsft3d of residue gas is recycled back to the GOSPs for reinjection. 260 MMbpd of C2+ NGL is sent to Saudi Aramco’s downstream facility through pipelines for further processing. Plant A consists of the following main process areas (FIG. 1 shows