Seplat Energy PLC, formerly Seplat Petroleum Development Company Plc, is a Nigeria-based company engaged in oil and gas exploration and production. Its segment is the exploration, development and production of oil and gas related projects located in Nigeria. Its portfolio consists of approximately seven oil and gas blocks in the prolific Niger Delta region of Nigeria, including oil mining lease (OML) 4, 38 and 41, OPL 283 (Pillar), OML 53, OML 55, OML 40, and Ubima. It has a working interest in OMLs 4, 38 and 41, which are located in Edo and Delta States onshore Nigeria. Its OML OML 55 covers an area of approximately 840 kilometer (km) and is located in the offshore areas in the south eastern Niger Delta. It has a non-operated working interest in the Umuseti/Igbuku Marginal Field Area of OML 56. Its OML 40 licence lies onshore within the Niger Delta, approximately 65 km northwest of Warri and covers an area of 498 (km). Its OML 53, which covers an area of approximately 1,585 km.