SOCO International plc is a United Kingdom-based oil and gas exploration and production company. The Company has oil and gas interests in Vietnam, which includes Block 9-2 and Block 16-1; Congo Basin, offshore Congo (Brazzaville), which includes Marine XI Block and Mer Profonde Sud; Albertine Rift, onshore eastern Democratic Republic of Congo, consisting of Block V, and Angola consisting of Cabinda Onshore North Block. The Company's operations are located in South East Asia and Africa. It holds its interests in Marine XI in Congo (Brazzaville) through its 85%owned subsidiary SOCO Exploration and Production Congo SA (SOCO EPC). It also holds a 60% working interest in the Mer Profonde Sud Block offshore Congo (Brazzaville) through its wholly owned subsidiary SOCO Congo BEX Limited.