准噶尔盆地南缘西部地层异常高压基本地质特征

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BASIC GEOLOGIC CHARACTERS OF THE ABNORMAL FORMATION OVERPRESSURE IN THE WESTERN PART OF SOUTHERN FRINGE OF JUNGGAR BASIN

摘要: 准噶尔盆地南缘西部地层异常高压主要分布于北天山山前褶皱带的第二、第三排构造带上,具明显区域带状分布特征.根据钻井资料揭示,异常高压带明显具有"层控、时控"之特点,表现为地层异常高压顶界深度受第三系安集海河组地层所控制,其三维空间形态呈不规则箱体状,显示了压力封存箱的特性.其成因类型属沉积、构造叠合作用的"复成因型"异常高压带.
- 准噶尔盆地 /
- 地层超压 /
- 超压封存箱
Abstract: The abnormal formation overpressure in the western part of southern fringe of Junggar Basin mainly existed in the secound and third row of structural zones in northern Tianshan piedmont fold zones,and were characterized by regional zonal distribution.According to drilling data revealed,formation overpressure were characterized by "strata-control and time-control",which showed that the depth of the top surface of abnormal overpressure was controlled by Anjihaihe formation (E₂₊₃),and its 3-D shape was a irregular box,which has the character of overpressured compartment.And its forming mechanism is "polygenetic",which was formed by superimposing of sedimention and tectonic.
- Junggar Basin /
- formation overpressure /
- overpressured compartment

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