摘要
在油藏范围内,高分辨率层序地层学中的体积分配原理细微地反映在砂泥比的增大和减小导致的地层岩性的变化上。以松辽盆地扶余油田为例,在高分辨率层序地层对比与划分基础上,探讨基准面旋回对砂体空间分布的影响。通过统计数据,扶余油田垂向上砂体发育程度与层序旋回变化之间有密切关系,短期基准面旋回下降期砂体更为发育;并且随基准面上升和下降,砂岩沉积中心分别向物源和盆地方向迁移。根据分析结果,建立了该区基准面旋回变化的模式;依据该模式,对砂体的空间分布进行了总结和预测,为油田下一步滚动勘探开发提供依据。
In the oil reservoir capacity distribution principle of high resolving power sequence stratigraphy was slightly indicated by change of strata lithology as a result of increase and decrease of sand/mud ratio.On the basis of contrasting and division of sequence stratum of high resolving power,the effect of cycle of datum plane on spatial distribution of sand body was discussed with an example of Fuyu oilfield.According to statistic data,development degree of sand content has a close relation to sequence cycle in vertical orientation.In the falling term of short cycle stage of datum plane had more sand body in Fuyu oilfield.With the rise and fall of datum plane,sedimentary centre of sand stone moved towards sediments source or basin.According to analysis result,cycle mode of datum plane was built up.On the basis of cycle mode,the authors gave a summary and prediction of spatial distribution of sand body,which provided basis of next progressive exploration and development of oilfield.
出处
《资源环境与工程》
2010年第1期55-59,共5页
Resources Environment & Engineering
关键词
高分辨率
层序
旋回模式
扶余油田
high resolving power
sequence
cycle mode
Fuyu oilfield
