HYDROCARBON MIGRATION PATHWAYS ASSESSMENT IN UNGARAN AREA, CENTRAL JAVA, INDONESIA
The study area is located in western part of Kendeng Zone, Northeast Java basin. It is a hilly zone, built up from very intensive deformation that elevated as Kendeng anticlinorium. Oil seepages are found in varying degrees of biodegradation and likely controlled by thrust fault and fold structure....
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2011
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/90724/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=52648 |
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| Summary: | The study area is located in western part of Kendeng Zone, Northeast Java
basin. It is a hilly zone, built up from very intensive deformation that elevated as
Kendeng anticlinorium. Oil seepages are found in varying degrees of
biodegradation and likely controlled by thrust fault and fold structure. The
relations of fault-induced folding and migration pathways which derived from the
field features are presented on the basis of the measured stratigraphy, fault rock
theory, conceptual model of an ideal self-similar thrust sheet, and theoretical
prediction for fault-fracture-migration relation. Since study area is dominated by
over thrust and thrust fault which do not penetrated into the basement, continuing
development of these subsurface processes caused the formation to imbricate
south-north orientation and folding. The fold developed by thrust-induced fold
that offers the opportunity to document the penetrative fracturing within thrustinduced
fold. Thus the easiest migration pathways for hydrocarbons would be
lateral migration, with north-south dipping Eocene-Oligocene series directly
connecting the syncline Pati kitchen with adjacent eroded Kerek Anticlinorium.
However, an alternative hypothesis is to also consider that the migration is from
the hanging wall, across or along the intervening thrust planes. |
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