Asmina, Ana and Sutriyono, Edy and Hastuti, Endang Wiwik Dyah (2017) Turnitin_GAS CONTENTAPPRAISAL OFSHALLOWCOALSEAMSINTHESOUTH PALEMBANG BASIN OFSOUTH SUMATRA. GEOMATE International Society.
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Abstract
The gas content of coal seamsin the South Palembang basinhas beenassessedusingwelllog dataand core analysis.The seams are stratigraphically exposed at shallow levels (<300 m), andpresent in the LateMiocene-Early Pliocene Muara Enim sequence. The coal thickness of single bedin each well varies between ~7 mand ~14 m.Allsamplesanalyzed arelow rankcoals, suggestingsubbituminous and high volatile bituminous.Vitrinite reflectance (VR) measurementsvaryfrom 0.49-0.59%, but there appears an increase in the VRvaluewithdepth.The coals contain predominantlyhuminite (56-86 vol. %), whereasliptinite and inertinite are less abundant,ranging from 0.2-12.2 vol. % and 4.2-19.2 vol. % respectively.These low rank coalscomprisea small number ofminerals(6-11 vol. %), high moisture content of 2.4-12.6 wt. %, volatile matters of >39 wt. %, and fixed carbons of>43 wt. %. The amount of gaswithin individual coal layervaries from 4.1-5.3 m3/t, but thegascontenttendstoincreasewith deeper burial. The sum of the estimated gas-in-place is approximately3,019x106m3.In addition, theonset of gas generation within thesenear surface coals may occur due to biogenic controls during the coal-formingprocesses, as a result of sedimentation oftheoverburdenin Pliocene time prior to the subsequent basin inversioncommencing in the Plio-Pleistocene.
| Item Type: | Other |
|---|---|
| Subjects: | Q Science > QE Geology > QE1-996.5 Geology #3 Repository of Lecturer Academic Credit Systems (TPAK) > Results of Ithenticate Plagiarism and Similarity Checker |
| Divisions: | 03-Faculty of Engineering > 34201-Geological Engineering (S1) |
| Depositing User: | edy sutriyono |
| Date Deposited: | 31 Jul 2023 04:37 |
| Last Modified: | 31 Jul 2023 04:37 |
| URI: | http://repository.unsri.ac.id/id/eprint/100027 |
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