| 油气地表异常的形成与评价 |
| |
| 引用本文： | 程学惠,张谦.油气地表异常的形成与评价[J].沉积学报,1995,13(2):169-177. |
| |
| 作者姓名： | 程学惠 张谦 |
| |
| 作者单位： | 中国科学院兰州地质研究所 兰州 730000 |
| |
| 基金项目： | “八五”国家重点科技攻关项目 |
| |
| 摘 要： | 埋藏在地下深处的油气组份，通过断层、裂隙、可渗透地层以及地下水等多种途径向上运移至地表附近时，改变了原始地表土壤的地球化学场，在土壤中形成可辨异常。油气化探就是运用土壤烃、土壤蚀变碳酸盐（△Ｃ），土壤汞、甲烷及△Ｃ碳同位素等从土壤、岩芯、水体中检测油气运移的迹象，在地表发现异常，进而研究评价这种地球化学异常和油气的微渗漏及油气圈闭类型等关系，为寻找埋藏在地下深部的油气藏提供信息。
|
| 关 键 词： | 油气化探 异常 土填烃 △C 土壤汞 微渗漏 油气圈闭 |
| 收稿时间： | 1994-10-15 |
Formation of Oil and Gas Surface Anomaly and its Evaluation |
| |
| Institution: | Lanzhou Institute of Geology, Chinese Academy of Sciences,730000 |
| |
| Abstract: | While oil and gas from a deep reservior migrates near surface along the micro fracture of sedimentary rocks covering above the reservior, the original geochemical characteristics of soil are changed. Thus, the recognizable geochemical anomaly is formed in the near surface soil. After analyzing soil hydrocarbons, soil secondary carbonate (△C), soil mercury and the carbon isotope of methane and △C, and so on, we may supply an important information on determinating oil - gas migration, discovering geochemical anomaly related to deep oil and gas reserviors, and, thereby, may suggest the existence of deep oil and gas in buried reserviors.According to our study on the geochemistry of soil hydrocarbons, soil secondary carbonate and soil mercury, different geochemical indicators and methods are of different results in various geochemical landscapes. |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《沉积学报》浏览原始摘要信息 |
| 点击此处可从《沉积学报》下载免费的PDF全文 |
|
