JAKARTA (AFX-ASIA) – Medco Moeco Langsa Ltd (MMLL), a unit of PT Medco Energi Internasional and Mitsui Oil Exploration Co Ltd (Moeco), has acquired a 70% stake in the Langsa oil field from Singapore-based Modec Production Pte Ltd, Medco Energi said. A sales and purchase agreement was signed on Dec 24 between subsidiary MMLL and…