| 河流深槽沉积体与油气的关系——以辽河坳陷大25井区为例 |
| |
| 引用本文： | 陈振岩,李军生,闫火,张戈,祝丽玲,陈峰,季东民.河流深槽沉积体与油气的关系——以辽河坳陷大25井区为例[J].沉积学报,1996(3). |
| |
| 作者姓名： | 陈振岩 李军生 闫火 张戈 祝丽玲 陈峰 季东民 |
| |
| 作者单位： | 辽河石油勘探局 |
| |
| 摘 要： | 河流深槽沉积体是河流沉积的一种特殊沉积体。辽河坳陷第三纪断裂活动强烈，火山岩广泛分布，形成了独特的地貌条件，具备形成河流深槽沉积体的地质条件。本文以辽河坳陷东部凹陷大２５井区为例，对河流深槽沉积体的成因及特征进行探讨，证实了大２５井区巨厚砂砾岩沉积是河流在火山岩古地形的限制下发生急转弯，在其变曲河段的深槽中沉积的深槽沉积体。该沉积体中发育良好的储集空间，有利于油气储集。该类储集体的发现，丰富了辽河坳陷的储层类型，为油气勘探提供了新的领域。
|
| 关 键 词： | 河流深槽沉积体 火山岩物源坡降 |
Flute Deposit in Channel and Hydrocarbon |
| |
| Chen Zhenyan Li Junsheng Yan Huo Zhang Ge Zhu Liling,Chen Feng and Ji Dongmin.Flute Deposit in Channel and Hydrocarbon[J].Acta Sedimentologica Sinica,1996(3). |
| |
| Authors: | Chen Zhenyan Li Junsheng Yan Huo Zhang Ge Zhu Liling Chen Feng and Ji Dongmin |
| |
| Abstract: | Under the influence of rift movement of Tertiary, many times of magma eruption have occured and thus the volcanic rocks were widely distributed in Dapingfang area in southern East Depression of Liaohe rift. It is known that the relationship between volcanic rock and sandstone presents negative correlation in thickness. Well D25 is just in where with thin volcanic rock, while the thick volcanic rock exists in both sides of there. So that the location of D25 is a swale in Paleogeomorphology.The study indicated that the regional direction of paleocurrent is in the NE-SW, but the date of diplog shows that is in the NW-SE. The analysis infers that the direction of paleocurrent was abruptly turned in the D25 area. Under the action of erosion caused by secondry flow, a package of coarse sediment was superimpositionally deposited in the flut of channel near concave bank, and the conglomeratic sandstone is excellent reservoir and has better oil and gas bearing potential. The study of the deposit offers a new type of reservoir and provides a new thinking for hydrocarbon exploration. |
| |
| Keywords: | channel flute deposit\ volcannic rock provenance\ sloping |
| 本文献已被 CNKI 等数据库收录！ |
