海拉尔盆地呼和湖凹陷南屯组物源体系分析  

Provenance system analysis of Nantun formation of Huhehu depression in Hailar basin

作　　者：任朝波[1] 李军辉[2] 

机构地区：[1]中国石化集团国际石油勘探开发有限公司,北京100029 [2]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《油气藏评价与开发》2014年第1期33-38,共6页Petroleum Reservoir Evaluation and Development

摘　　要：虽然海拉尔盆地呼和湖凹陷目前勘探程度较低,但它是未来油气增储上产的重要区域。目前对呼和湖凹陷重要沉积物源体系南屯组认识薄弱,因此,精细刻画该区物源体系对该区域勘探具有重要指导意义。通过运用轻重矿物、砂岩厚度及砂岩百分含量、同沉积断裂组合样式分析、古地貌、地震反射特征等方面资料,精细研究了呼和湖凹陷南屯组古物源体系。结果表明,东部锡林贝尔凸起和西部巴彦山隆起是呼和湖凹陷主要物源供给区,由湖盆四周向中央汇聚,其中主要物源来自缓坡带和陡坡带,次要物源来自南部隆起。南屯组时期的沉积体系分布及其砂体展布规律是由物源分布格局所决定。At present, although Huhehu depression has low exploration degree in Hailar basin, it is an important area of increasing reservoir and production in the future. Nantun formation in Huhehu depression has an important sediment provenance system, but we have weak understanding of it. Therefore, fine depicting source system has important references for exploration in this area. Through analyzing light-heavy mineral, sandstone thickness and sandstone percentage, synsedimentary fault combination style analysis, palaeogeomorphology, seismic reflection characteristics, we detailed researched sediment provenance system of Nantun formation in Huhehu depression. The results show that the eastern Xilinbeier bulge and the western Bayanshan bulge are main provenance supply areas for Huhehu depression. These supply areas surround lake basin and gather in the center of the depression. The main provenance is from the gentle slope belt and the steep slope zone, while the secondary provenance is from the southern uplift. The depositional system distribution and the sand body distribution rule in Nantun formation are determined by source distri- bution pattern.

关 键 词：呼和湖凹陷 南屯组 物源分析 沉积体系 

分 类 号：TE121.1[石油与天然气工程—油气勘探]