Octriananda, Devy (2014) GEOLOGI, STUDI SIKUEN STRATIGRAFI DAN PERHITUNGAN CADANGAN LAPISAN “ADR” FORMASI TALANG AKAR LAPANGAN “DEE” CEKUNGAN SUMATERA SELATAN. Masters thesis, UPN "VETERAN" YOGYAKARTA.
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Abstract
DEE" field is one of the field belongs to KSO Pertamina – Indrillco Hulu Energy that produce oil and gas, located in the South Sumatra Basin. In 2012, was completion the well on Talang Akar formation, and the production test results interpreted that in well DO-1, DO-2, and DO-3 have several interval of a reservoir that have potentials of hydrocarbon, including a layer of "ADR". This research approach stratigraphy sequence used 3 well data’s (wireline log, mud log), sidewall core and petrophysic analysis as a supporter, therefore it is expected to provide more detailed information to the development of an oil and gas field. The analysis was undertaken in the form of deposition of environmental analysis, electrofacies analysis, stratigraphy sequence analysis, sequence stratigraphy correlation, structure correlation, subsurface maps and the reserve calculation layers of "ADR". From this research, it shows that Talang Akar Formation have a deposition facies in the form of fluvial delta plain-delta front, of which is divided into the Lower Talang Akar with deposition facies in the form of channel, channel bar, and crevasse splay, and the Upper Talang Akar with deposition facies in the form of interdistributary channel, distributary channel, tidal channel, and mouth bar. Based on the results of the stratigraphy sequence analysis, this research obtained three packages of deposition sequence of a constituent Talang Akar Formation, namely as sequence 1 , sequence 2 , and sequence 3 where each sequence was limited by a SB-1 , SB-2 , SB-3 , and SB-4. Structured by several units systems tract namely as LST, TST and HST. The structure correlation shows that the structure is in the form of anticline wings which is directed to North West-East South. As a development in this research, the reserve calculation layers of "ADR" was conducted. Reservoir unit is located in pack TST-3 which is the component of the Upper Talang Akar Formation. The determination of this unit is based on the observation of well data log and sidewall core which shows there were indications of hydrocarbon in the form of trace oil and the quite high value of the well log resistivity. Reservoir unit is formed in the sub-environmental tidal channel. From the calculation result, it obtained reserves layer of “ADR” totalled 22.618.001,07 STB. Keywords : DEE Field, South Sumatra, Talang Akar Formation, fluvial delta plain-delta front, tidal channel, stratigraphy sequence.
| Item Type: | Thesis (Masters) |
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| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Bugel Suryanta |
| Date Deposited: | 20 May 2016 02:02 |
| Last Modified: | 20 May 2016 02:02 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/1802 |
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