TheM icrofac ies Combination and Character istic of Main Sandbodies in Xifeng Oil Field, Shan-Gan-Ning Basin
-
摘要: 以鄂尔多斯盆地西峰地区晚三叠世延长组为例,对辫状河三角洲前缘沉积体系中以水下分流河道和河口坝两种储油微相为主导的多种微相组合进行研究,提出将其划分为“水下分流河道区”、“水下分流河道与河口坝混合区”、“河口坝区”和“河口坝与滑塌体混合区”四段微相组合区。文中对辫状河三角洲前缘中的沉积微相进行了详细刻画,例如,将水下分流河道划分为箱形叠加式、箱—钟形叠加式和钟形叠加式3种;将水下分流河道与河口坝组合划分为“河上坝”和“坝上河”两大类,及其以河为主的“坝上河”、以坝为主的“坝上河”、连续式“河上坝”和叠加式“河上坝”等4种亚类;将河口坝组合划分为迁移河口坝和叠加河口坝;将河口坝与滑塌体组合划分为坝顶滑塌和坝底滑塌,并讨论了各微相组合的形成机制。Abstract: The braided delta front are developed in Yanchang Formation in Xifeng area of Shan-Gan-Ning basin,which is mainly composed of the submerged distributry channels and mouth bars. It can be divided into submerged distributary channels section, submerged distributary channels together with mouth bars and mouth bars section.Based on the research of submerged distributary channels and mouth bars, the abundant sandbodies assemblage can reflect different sedimentary environments. For instance, submerged distributary channels section is composed of trunk sandbodies,campaniform sandbodies and campaniform-trunk sandbodies etc. The relationship between the characteristics and quality of the reservoirs and their physical p roperty and oil - bearing property is analyzed and the law of oil and gas distribution in the area is described, which provides reliable basis for the further exp loration and development of the area.
-
[1] 1 王多云,陈应泰,徐洪生. 受周期性湖平面升降控制的冲积扇-扇三角洲沉积体系[J].沉积学报,1991,(04):43-48.
2 李凤杰,王多云,郑希民. 陕甘宁盆地华池地区延长组缓坡带三角洲前缘的微相组成[J].沉积学报,2002,(04):582-587.
3 李凤杰,王多云,郑希民. 测井曲线频谱分析在含煤地层沉积旋回研究中的应用[J].煤田地质与勘探,2003,(04):14-18.
4 王多云,郑希民,李凤杰. 含油气区岩相古地理学的几个问题[J].沉积学报,2003,(01):133-136.
5 王多云,郑希民,李凤杰. 低孔渗油气富集区优质储层形成条件及相关问题[J].天然气地球科学,2003,(02):87-91.
6 郑希民,宋广寿,王多云. 陕甘宁盆地陇东地区长8油组厚层非均质砂体的沉积学解剖[J].沉积学报,2002,(02):272-277.
7 郭忠铭. 陕甘宁盆地构造特征及油气勘探[M].北京:石油工业出版社,1989.
8 张哨楠,胡江奈. 鄂尔多斯盆地南部镇泾地区延长组的沉积特征[J].矿物岩石,2000,(04):25-30.
9 Friedman G M,Sanders J E. Principles of Sedimentology[M].USA,1978. 199-234.
10 薛良清,Galloway W E. 扇三角洲、辫状河三角洲与三角洲体系的分类[J].地质学报,1991,(01):141-153.
11 杨俊杰. 鄂尔多斯盆地构造演化与油气分布规律[M].北京:石油工业出版社,2002.104.
12 陈安宁. 鄂尔多斯盆地论文集[M].北京:石油工业出版社,1999. -
点击查看大图
计量
- 文章访问数: 841
- HTML全文浏览量: 7
- PDF下载量: 686
- 被引次数: 0
下载:
