oa Fast Maturation in a Mature Basin: An Example from a Stringer Discovery

Pre-Cambrian carbonate reservoirs occur at depths<br>between 3-6 km in the subsurface of South Oman.<br>These reservoirs are typically over-pressured, encased<br>in and sealed effectively by thick Ara evaporites and<br>contain sour oil. They have been a focus for exploration<br>since the late 1950s. The discovery in 1976 of<br>commercial oil in these “stringers” opened up the Ara<br>play and PDO has since then been actively exploring for<br>these deep oil reservoirs in the South Oman Salt Basin.