汪芯,付广,王有功,王岐,王立志
WANG Xin,FU Guang,WANG Yougong,WANG Qi,WANG Lizhi

• 1:东北石油大学地球科学学院
• 2:大庆油田有限责任公司第二采油厂
• 3:大庆油田有限责任公司第六采油厂

摘要(Abstract)：

为了搞清三肇凹陷尚2区扶杨油层的断裂对油气运聚的控制作用,对断裂的几何学特征、断层生长指数、剖面伸展率、构造演化史等进行了分析。研究认为:断裂主要为近南北向,规模小,密度大,平面上呈密集带分布,剖面上为堑、垒相间构造样式;火石岭组,沙河子组,营城组,泉头组—青山口组,姚家组,嫩一、二段,嫩三段—第四系等7个组段的沉积时期为断裂活动期;断陷期形成Ⅰ—Ⅱ型、Ⅰ—Ⅲ型断裂,坳陷期形成Ⅱ—Ⅲ型、Ⅱ型断裂;断裂对油气运移起输导作用,其中Ⅰ—Ⅲ型、Ⅱ—Ⅲ型断裂为输导断裂;断裂控制油气的聚集,断裂密集带边部的地垒及反向断阶为最有利聚集部位。
In order to make clear of the controlling action of the faults in the hydrocarbon migration and accumulation of Fuyang oil reservoirs in Shang No.2 Block of Sanzhao Sag,the geometric characteristics,growth index of the faults,extension rate of the profiles,tectonic evolution history and so on are analyzed.The studies show that faults are characterized by nearly SN strike,small scale but intensive—intensively faulted belts on the plane and intergraben-horst tectonic pattern in profile.Seven active periods for the faults happen in the following deposition periods:Huoshiling,Shahezi,Yingcheng,Quantou-Qingshankou,Yaojia,Nenjiang Member 1 and 2 and Nenjiang Member 3-Quaternary System;type Ⅰ-Ⅱ and type Ⅰ-Ⅲ faults are formed in the rift period,type Ⅱ-Ⅲ and type Ⅱfaults are generated in the depression period,both kinds of the faults act as conducting roles for the petroleum migration,in detail,type Ⅰ-Ⅲ and type Ⅱ-Ⅲ faults are rift conducting ones;the faults control the accumulation of the hydrocarbon,the horsts and adverse fault benches near the boundary of the intensively faulted belts are the most favorable positions for the petroleum enrichment and accumulation.

关键词(KeyWords)： 三肇凹陷;尚2区块;扶杨油层;断裂特征;油藏;控制作用
Sanzhao Sag;Shang No.2 Block;Fuyang oil reservoirs;fault characteristic;oil reservoir;controlling action

Abstract:

Keywords:

基金项目(Foundation): 国家油气重大专项“中国大型气田形成条件、成藏机制与富集规律研究”(2011ZX05007)

作者(Author): 汪芯,付广,王有功,王岐,王立志
WANG Xin,FU Guang,WANG Yougong,WANG Qi,WANG Lizhi

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