Geological and Hydrocarbon Accumulation Characteristics in Piedmont Zone
详细信息
- 责任者：Liu Chuanpeng (Western New Prospect Research Center ; Shengli Oilfield Company ; SINOPEC ; Dongying 257001 ; China) ; Luo Liang
- 刊名：Geoscience
- 出版年：2013
- 卷期：27(5)
- 关键词：褶皱冲断带 ; fold and thrust belts ; 前陆盆地 ; foreland basins ; 油气藏形成 ; reservoir formation
- 页码：p.1033-1041
- 图表：9 illus., 1 table, 19 refs.
- 分类号：1003
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
The piedmont zone includes fold-thrust belt and foreland basin adjacent to the orogen.According to the formation mechanism classification of foreland basin,piedmont zones can be divided into three types,i.e.retro-arc foreland piedmont zone,peripheral foreland piedmont zone and rejuvenated foreland piedmont zone.Based on the superimposed basin classification,piedmont zones can be divided into positive inversion piedmont zone and successor foreland piedmont zone.Rejuvenated foreland piedmont zone and successor foreland piedmont zone are only found in the middle and western China.Some principles of hydrocarbon accumulation in piedmont zone have been summarized.Pre-foreland shale is source rock,foreland sandstone and pre-foreland carbonate rock are good reservoirs,and mudstone,gypsum salt and salt rock are cap rocks.Fault is the main channel of hydrocarbon migration.Structural trap is the main type in the fold-thrust belt,while structural-stratigraphic trap is dominated in the foreland basin.
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