Update Artikelilmiah: 25243

RAESITA WIDOWATI

NIM

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Abstrak (Bhs. Indonesia)

Lapangan  Wido secara administratif terletak di Provinsi Sumatra Selatan,  Cekungan Sumatera Selatan dengan luas 15 km2. Lapangan ini terletak pada dua kompartemen struktur yang berasosiasi dengan struktur lipatan yang berorientasi Utara – Selatan  dan struktur sesar normal berorientasi Timur Laut –Barat Daya akibat periode deformasi kompresi. Reservoir pada Lapangan Wido adalah Formasi Talangakar Transition Member (TRM) dengan fokus penelitian pada interval lapisan batupasir pada system track lapisan Lowstand System Track 3 (LST 3). Penelitian ini bertujuan untuk memahami kondisi geologi lapangan penelitian, menentukan karakteristik reservoir seperti fasies pengendapan, properti dan distribusi reservoir, serta prospek hidrokarbon pada reservoir LST 3. Data yang digunakan terdiri dari data wireline log, data petrofisik, dan data seismik 3D. Metode yang digunakan adalah analisis wireline log, cutting, analisis seismik dan perhitungan cadangan. Reservoir LST 3 Formasi Talangakar Transition Member TRM pada Lapangan Wido diendapkan pada lingkungan asosiasi delta yaitu Distributary Channel dan Mouth Bar dengan arah pengendapan dominan Utara – Selatan. Berdasarkan perhitungan petrofisika, reservoir daerah penelitian memiliki nilai rata – rata porositas efektif 12.9%, saturasi air 0,65 dan pada pemodelan properti permeabilitas rata– rata  50.68 mD serta net to gross senilai 0,27. Estimasi total volumetrik hidrokarbon pada Lapangan Wido sebesar 11.76 MSTB (Million Stock Tank Barrels).

Abtrak (Bhs. Inggris)

Wido Field administratively is located in Prabumulih Province and part of South Sumatra Basin encompassing an area of 15 km2. Wido Field is located in two compartement structure which associate with two anticlin with Nort – South and normal fault with Northeast-Southwest trend as result of compression stage. Reservoir of Wido Field is Talangakar Transition Member (TRM) Formation with study focus at sandstone interval Lowstand System Tract 3 (LST 3). The main purpose of this study are to know geological condition of Wido Field to determine reservoir characteristic such as depositional facies, reservoir properties and distribution, and hydrocarbon prospect of sandstone interval Z-600. The data used in this study consists of wireline log, petrophysic, and 3D seismic. Several methods that have been used are wireline analysis, cutting analysis, seismic analysis  and hydrocarbon volumetric estimation. LST 3 resevoir Talangakar Transgressive Member TRM Formation was deposited in delta which is dominated distributary channel and mouth bar with North – South sedimentation trend. Based on reservoir property modelling and petrophysics calculate the research interval has average reservoir porosity is about 12.9%, water saturation 0,65 with average permeability 50.68 mD and net to gross is about 0,27. The total hydrocarbon volumetric estimation on Wido Field is 11.76 MSTB (Million Stock Tank Barrels)

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