茨榆坨地区变质岩潜山成藏条件分析
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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。
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.
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.
引文
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[11]游振东,王方正,等.变质岩岩石学教程[M].武汉:中国地质大学出版社,1988:199-203.
[2]李德生.中国油气勘探的理论与实践[J].世界科技研究与发展,2003,25(4):1-6.
[3]杜金虎,邹伟宏,费宝生,等.冀中拗陷古潜山复式油气聚集区[M].北京:科学出版社,2002:490-517.
[4]董冬,陈洁.断陷盆地潜山油气藏体系的形成、分布和勘探—以济阳坳陷为例[J].石油勘探与开发,2000,27(6):26-27.
[5]胡见义,徐树宝,童晓光.渤海湾盆地复式油气聚集区(带)的形成和分布[J].石油勘探与开发,1986,13(1):1-8.
[6]孟卫工,陈振岩,等.潜山油气藏勘探理论与实践——以辽河坳陷为例[J].石油勘探与开发,2009,36(2),136-143.
[7]慕德梁.辽河坳陷兴隆台古潜山深部油藏地质特征及勘探意义[J].特种油气藏,2007,14(3),16-19.
[8]郝琦,查明,等.辽河东部凹陷潜山油气藏特征及油气分布规律[J].成都理工大学学报:自然科学版,2006,33(3),246-251.
[9]查明,郝奇,等.辽河东部凹陷茨榆坨低位潜山油气成藏研究[J].石油大学学报,2003,27(4):1-10.
[10]邹才能,张颖,等.油气勘探开发实用地震新技术[M].北京:石油工业出版社,2002:240-257,435-450.
[11]游振东,王方正,等.变质岩岩石学教程[M].武汉:中国地质大学出版社,1988:199-203.
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