Syrian oil is clawing its way back, methodically. Onshore, the immediate issue is returning Syria’s existing oil production to Damascus. Most producing fields are concentrated in Deir ez-Zor and Hasakah in the northeast, territory Damascus lost during the civil war, eventually to the Kurdish-led Syrian Democratic Forces (SDF). Courtesy of a January military offensive against the SDF, Damascus has recovered the most important Deir ez-Zor assets, including the largest (Omar), the Tanak oil field, and the Conoco gas field. The Syrian Petroleum…