南阳凹陷东庄油田成藏特征Reservoir formation characteristics of Dongzhuang Oil Field in Nanyang Sag
何祖荣
HE Zu-rong~(1;
摘要(Abstract)：
南阳凹陷是南襄盆地内发育的一个次级凹陷,凹陷内已发现魏岗、张店、东庄、北马庄等油田。东庄油田位于凹陷西南部,是在背斜构造背景上被一组与背斜长轴走向一致的南倾正断层切割的复杂断块油田;储集层以西北部的沙堰三角洲前缘砂体、粉细砂岩为主;“背斜构造控制油气聚集范围、砂体决定油气富集程度、断层起油气再分配和遮挡作用”是其主要成藏特征;油层埋藏深、厚度薄、含油层段集中,平面上主要分布在东庄背斜构造北翼,南翼分布比较零散,纵向上主要集中在核桃园组二段至三段;油藏类型以断鼻、断块为主。
Nanyang Sag is a secondary sag developed in Nanxiang Basin. It has several oil fields including Weigang, Zhangdian, Dongzhuang, Beima and so on. Dongzhuang Oil Field locates in the southwest of the sag. It is a complex fault block oil field cut by a group of southward slanting normal faults with the same trend as the anticline background. The reservoirs are mainly sand bar deltic frontal sand body and fine and siltstone. The reservoir formation characteristic is “anticline structure controls hydrocarbon accumulation scope, sand body determines hydrocarbon enrichness degree, and faults contribute to hydrocarbon re-distribution and barriers”. Reservoirs have large buried depth and small thickness. Oil -bearing intervals are concentrated. They distribute arealy in the north side of the anticline structure in Dongzhuang, while scattered in the south side, and vertically concentrate in Segment II and III of Taoyuan Member. Reservoir types are mainly fault nose and fault block.
关键词(KeyWords)：
南阳凹陷;东庄油田;成藏特征;核桃园组;背斜构造;油藏类型
Nanyang Sag;Dongzhuang Oil Field;reservoir formation characteristic; Taoyuan Member;anticline structure;reservoir type
基金项目(Foundation):
作者(Authors):
何祖荣
HE Zu-rong~(1;
- 南阳凹陷
- 东庄油田
- 成藏特征
- 核桃园组
- 背斜构造
- 油藏类型
Nanyang Sag - Dongzhuang Oil Field
- reservoir formation characteristic
- Taoyuan Member
- anticline structure
- reservoir type