Penentuan isi awal minyak di tempat dengan metode material balance pada reservoir FS
E Evaluasi isi awal minyak Reservoir FS dimulai saat aktivitas pemboraneksplorasi minyak ditemukan. Tahapan awal pengembangan Reservoi FSmenentukan volume isi minyak awal di tempat yang terkandung di dalamnyadengan menggunakan metode volumetric dan metode material balance.Reservoir FS memiliki jenis yaitu undersaturated ke saturated. Karenatekanan awal masih diatas bubble point beberapa tahun berjan tekanan berubahdibawah bubble point. Drive mechanism menggunakan analisa kualitattif dandrive index, drive mechanism pada Reservoir FS adalah combination drive antarasolution gas drive dan water drive.Berdasarkan perhitungan isi awal minyak pada tugas akhir inimenggunakan metode volumetrik didapatkan Original Oil In Place sebesar17,223 MMSTB , sedangkan perhitungan isi awal minyak di tempat denganmenggunakan metode material balance didapat Original Oil In Place sebesar21,721 MMSTB. Persentase perbedaan isi awal minyak di tempat antara metodevolemetrik dengan metode material balance sebesar 1,26%.
O Original oil in place evaluation started when the exploration drilling foundoil. The early development step of FS Reservoir is determining the originalvolume of oil in place using volumetric method and material balance method.The type of the FS reservoir is undersaturated toward saturated condition.It caused by the declining pressure from higher than the bubble point pressuretowards under bubble point pressure as time went. Drive mechanism determinedby using the qualitative analysis and from the drive index, the drive mechanism ofFS Reservoir is combination drive between solution gas drive and water drive.Based on the calculation of original oil in place in this Final Assignmentby using the volumetric method is 17,223 MMSTB, while using material balancemethod the original oil in place is 21,721 MMSTB. The percentage differencebetween the two methods are 1,26%