In order to build 3D structural model for Mamlaht Al-Kom structure in the North Palmyride Chain, the potential reflections were defined like Korushina Anhydrite (K.A) the cover, and Korushina Dolomite (K.D) the reservoir, therefore the time, velocity, and depth maps for Korushina dolomite reflection were constructed. Finally the 3D Structural Model for formation (K.D) was defined. So that the hydrocarbon potential is discussed.