三肇凹陷扶杨油层断裂密集带样式及有利成藏部位

陈方文; 卢双舫; 薛海涛; 李吉君; 王民

doi:10.3799/dqkx.2013.000

三肇凹陷扶杨油层断裂密集带样式及有利成藏部位

doi: 10.3799/dqkx.2013.000

中国石油大学非常规油气与新能源研究院，山东青岛 266580

基金项目:

国家“973”计划前期专项 2011CB211701

中央高校基本科研业务费专项资金资助 2472014CX02089A

详细信息

作者简介:
陈方文(1984-)，男，博士，主要从事油气藏形成与资源评价研究.E-mail: cfwdqpi@163.com

中图分类号: TE122
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出版历程
- 收稿日期: 2012-11-12
- 刊出日期: 2013-11-01

Types and Favorable Oil Accumulation Parts of Fault Dense Belts in Fuyang Formation of Sanzhao Depression, Songliao Basin

Institute of Unconventional Hydrocarbon and New Energy Sources, China University of Petroleum, Qingdao 266580, China

摘要

摘要: 从三肇凹陷扶杨油层断裂密集带组合特征入手，结合油气分布规律，分析断裂密集带对油气优势运移方向控制作用，分源内和源外探讨断裂密集带中有利成藏部位.研究表明：三肇凹陷扶杨油层主要发育4种断裂密集带样式，即反向-地堑-反向断阶、地垒-地堑-反向断阶、反向-地堑-顺向断阶和地垒-地堑-顺向断阶等；当断裂密集带走向与地层倾向呈小角度相交时，其走向指示油气平面优势运移方向；源内断裂密集带中地垒和反向断阶是油气聚集优势部位；源外断裂密集带走向与地层倾向呈小角度相交时，地堑两侧反向断阶和地垒是油气优先聚集部位，其次为断裂密集带中部地堑，若呈大角度相交则断裂密集带靠近生烃凹陷一侧的反向断阶和地垒优先聚集油气.
- 松辽盆地 /
- 三肇凹陷 /
- 断裂 /
- 优势运移方向 /
- 聚集油井
Abstract: The controlling effect of fault dense belts on the preferred direction of oil-gas migration is discussed and favorable parts of fault dense belts for oil accumulation inside and outside oil source area are discussed based on the characteristics of fault dense belts of Fuyang Formation in Sanzhao Depression, combining with the oil and gas distribution of in Fuyang Formation of study area in this paper. The results show that there are four types of fault dense belts in Fuyang Formation of Sanzhao Depression, namely antithetic-graben-antithetic fault terrace, horst-graben-antithetic fault terrace, antithetic-graben-consequent fault terrace, and horst-graben-consequent fault terrace. The strike of fault dense belt is the preferred direction of oil-gas migration and horsts and antithetic inside oil source area of fault dense belts are favorable parts for oil accumulation where the strikes of fault dense belt and the layer are parallel or small-angle intersection. Inside oil source area horst and antithetic of fault dense belts are favorable parts for oil accumulation. And horsts and antithetic outside oil source area are favorable parts for oil accumulation and the grabens are secondary favorable ones where the angle of the strikes of fault dense belt and layer ranges from 0 to 45 degrees. The antithetic and horsts are preferential for oil accumulation where the angle ranges from 45 to 90 degrees.
- Songliao basin /
- Sanzhao depression /
- fault /
- preferred direction of migration /
- accumulation oil wells

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图 1 三肇凹陷构造位置

Ⅰ.升平鼻状构造；Ⅱ.升西次凹；Ⅲ.尚家鼻状构造；Ⅳ.宋芳屯北鼻状构造；Ⅴ.徐家围子次凹；Ⅵ.永乐次凹；Ⅶ.宋芳屯南-肇州鼻状构造

Fig. 1. Structural location of Sanzhao depression

下载: 全尺寸图片幻灯片

图 2 三肇凹陷扶杨油层断裂密集带样式

Fig. 2. Types of faults dense belt in Fuyang Formation of Sanzhao depression

下载: 全尺寸图片幻灯片

图 3 三肇凹陷扶杨油层顶面断裂密集带平面分布及样式

a.断裂密集带分布；b.断裂密集带样式

Fig. 3. Distribution and types of faults dense belt in Fuyang Formation of Sanzhao depression

下载: 全尺寸图片幻灯片

图 4 断裂密集带对油气运移横向遮挡和侧向输导模式

Fig. 4. Model of transverse sealing and lateral fluid conduction of fault dense belts in hydrocarbon migration

下载: 全尺寸图片幻灯片

图 5 三肇凹陷扶杨油层断裂密集带指示油气优势运移方向

Fig. 5. Effect of fault dense belts on the preferred direction of oil migration in Fuyang Formation of Sanzhao depression

下载: 全尺寸图片幻灯片

图 6 三肇凹陷扶杨油层钻井成功率

Fig. 6. The success rate statistics of test wells in Fuyang Formation of Sanzhao depression

下载: 全尺寸图片幻灯片

图 7 三肇凹陷扶杨油层断裂密集带控藏模式

Fig. 7. Controlling oil reservoir model of fault dense belts in Fuyang Formation of Sanzhao depression

下载: 全尺寸图片幻灯片

表 1 三肇凹陷扶杨油层探井成功率统计

Table 1. The success rate statistics of test wells in Fuyang Formation of Sanzhao depression

断裂密集带部位	源内断裂密集带	源外断裂密集带			总计
		与地层倾向平行	与地层倾向垂直
		与地层倾向平行	临近生烃凹陷	远离生烃凹陷
地堑	13/37(35.1%)	20/45(44.4%)	4/12(33.3%)	2/6(33.3%)	39/100(39%)
地垒	3/3(100%)	17/19(89.5%)	/	1/3(33.3%)	21/25(84.0%)
反向断阶	20/22(90.9%)	33/35(94.3%)	14/14(100%)	1/13(7.7%)	68/84(81.0%)
顺向断阶	0/4(0%)	0/2(0%)	0/1(0%)	2/16(12.5%)	2/23(8.7%)
注：表中数据格式为成功井数/总井数(钻探成功率).

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