The carbonate platforms form one of the genetic gas reservoirs in the subsurface in Central Luconia, offshore, Sarawak, Malaysia. A detailed investigation of available core and thin sections revealed that different diagenetic parameters influence the reservoir quality in Central Luconia. Marine diagenesis, dissolution, and burial are the three main diagenetic environments that have affected the carbonate rocks in Central Luconia. Micrite envelop, cementation, fracture, compaction, and dissolution are the dominant diagenetic parameters which are identified in the current field of study. Among all the observed diagenetic features, dissolution feature was formed as a result of subaerial exposure during the meteoric diagenesis and contribute to porosity enhancement and reservoir quality. The compaction and cementation (calcite and dolomite) have a negative impact on the reservoir behavior. Based on the observed qualitative porosity types and their quantitative distribution in Well A of Central Luconia, the porosity in Central Luconia is a combination of depositional, diagenetic and fracturing. The diagenetic porosity is the far more dominant types of porosity, and the carbonate reservoir in Central Luconia is the type of diagenetic reservoirs.