Discovery and Geological Significance of Turbidite Sandstones in Western Block J,
详细信息
- 责任者：Liu Yaming (Research Institute of Petroleum Exploration and Development ; PetroChina ; Beijing 100083 ; China) ; Xue Liangqing
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2010
- 卷期：17(4)
- 关键词：浊积岩 ; turbidite ; 砂体 ; sand bodies ; 印度尼西亚 ; Indonesia
- 页码：p.409-412,447
- 图表：4 illus., 11 refs.
- 分类号：1003
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
To examine the formation mechanism of turbidite sandstone in western Block J, the characteristics of formation, distribution and trap development of the turbidite sandstones in the block are studied by the analysis of well logging, seismic characteristics, sedimentary facies and reservoir inversion. Study results show that the spontaneous potential curve is mainly of box type, funnel type and sawtooth type characteristics, and that the top and bottom of sands show the abrupt contact with mudstone from the roots to the central and to the front of the sands. The morphology in seismic section is lenticular, with west thin and east thick, the internal reflection is parallel-subparallel, medium to strong amplitude, medium to low frequency and more continuous reflection, with a downlap contact relationship to underlying stratum. The turbidite sandstones were formed by the multiphase overlying and rehandling deposition of slumped delta front, which are lens sandstone in thick layer of shale. The discovery provides a reference mark for the division of sequence stratigraphy in the block, finds out a new series of exploration, points out a new exploration direction for the block.
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