【摘要】 依据研究区的基本地质特征,运用变质岩潜山成藏特征分析方法分析茨榆坨地区变质岩潜山成藏条件,认为构造与储层是控制油气成藏的要因。首次采用变质岩潜山顶界识别技术、断裂识别技术及变质岩裂缝预测技术等手段,有效地研究成藏条件,并建立油气成藏模式。指出本区可发育变质岩风化壳型或不整合面型和变质岩内幕型2种油气藏;提出中高部位的潜山是寻找风化壳型或不整合面型油气藏的有利区带,而中、低部位的潜山是寻找变质岩内幕型油气藏的有利区带。更多还原

【Abstract】 This paper analyzes the characteristics of hydrocarbon accumulation in metamorphic buried hill and believes that structure and reservoir are the main factors controlling hydrocarbon accumulation in the study area. The techniques of top boundary recognition, fault recognition and fracture prediction for metamorphic buried hill have been applied for the first time to study hydrocarbon accumulation conditions and to establish a model of hydrocarbon accumulation. It is suggested that two types of hydrocarbon reservoirs might have developed in this area, which are weathering crust or unconformity reservoirs and inner metamorphic rock reservoirs. It is also proposed that the buried hills at structural mid-high are favorable zones for weathering crust or unconformity reservoirs, while the buried hills at structural mid-low are favorable zones for inner metamorphic rock reservoirs.更多还原