摘要
根据天然气的成因分布、烃类组分、碳同位素特征、地层水矿化度变化特征、储层沥青的分布及生物标志化合物特征等,分析了济阳坳陷渤南—孤北地区深层天然气的有效输导体系及运移方向。研究表明,渤南洼陷深层源岩生成的油型天然气通过孤西断层、不整合等输导体系向孤北潜山带呈阶梯状运移聚集;而孤北潜山低部位源岩生成的煤型天然气沿潜山内部被南北向断层切割的断块内部的砂体由北向南运移聚集。来自渤南洼陷沙四段的油气在输导层运移过程中发生了不同程度的地质色层效应。
Based on the distribution and hydrocarbon compounds of the natural gas,along with the alteration characteristic of the salinity of formation water,the distribution of the reservoir bitumen and the biomarkers in the deep formations,the effective migration pathways and the migration direction of the deep gas in Bonan—Gubei area have been studied in this text.And the study demonstrates that oil-type gas generated from the deep zone of Bonan sub-sag migrates towards the Gubei buried hill area along the migration pathways including the Guxi fault and the unconformities;while the coal-type gas from the lower parts of the Gubei buried hill migrates from north to south along the sands bodies in the fault block.The sand bodies are cutted out by the south—north faults.At the same time,the geochromatography effect of petroleum coming from the Es4 in Bonan sub-sag is different,which indicates that the migration distance is different.
出处
《地质论评》
CAS
CSCD
北大核心
2010年第4期525-530,共6页
Geological Review
关键词
天然气运移
有效输导体系
储层沥青
深层
济阳坳陷
Natural gas migration
effective migration pathways
reservoir bitumen
deep zone
Jiyang Depression
