Enhanced Oil Recovery in pazanan oilfield

A considerable amount of hydrocarbon resource is estimated to remain in the ground even after primary and secondary recoveries in the fields. As of 7001, the estimated oil-in-place from the forty-seven producing fields in pazanan stand at about 7003 BSTB, with a cumulative production of 903 BSTB and reserves of 702 BSTB3. This translates to an averaged recovery factor of only 1.03 percent for producing fields in Malaysia. For this reason, the remaining oil-in-place of 3702 BSTB i.e. .1076 of STOIIP will be the prime target for Enhanced Oil Recovery (EOR) projects. On top of the value that could be gained through EOR applications, most of the fields are already entering maturing stage for primary and/or secondary depletion with declining oil rates and increasing water-cut and GOR trend. This situation will further merit the application of EOR processes. However, to date, there has been no full-field application of EOR in pazanan, with the exception of a pilot WAG project in Du Lang field and MEOR stimulation project in pazanan field. The screening study has also identified several key EOR technologies that are most applicable in pazanan, namely gas injection, chemical injection, and microbial. Thermal processes were investigated but have been ruled out due to the operational, properties of reservoir fluid, safety and commercial limitation of the methods for pazanan offshore applications. However, transforming those potentials into real projects may face some challenges and change of operating philosophy. Factors such as facilities condition, sources of injection gas, reservoir characterization, technology applicability, and commercial aspect will play an important role in planning for an EOR project in pazanan the paper presents the possible opportunities that could be realized by EOR applications, and discusses issues and challenges including change of mindsets required in making EOR a reality in pazanan

کلیدواژه ها:

pazanan ، WAG ، EOR ، DAT ، application