饶阳凹陷油藏储量在空间分布的分形特征

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (4): 372-374.

饶阳凹陷油藏储量在空间分布的分形特征

冯阵东, 戴俊生, 刘景东

中国石油大学地球资源与信息学院,山东青岛 266555

收稿日期:2009-09-13 修回日期:2009-09-13 出版日期:2010-08-01 发布日期:2020-10-19
作者简介:冯阵东(1983-),男,山东成武人,在读博士研究生,地质学,(Tel)0532-86981754(E-mail)fzd203@163.com.

Fractal Characters of Oil Reserves in Spatial Distribution in Raoyang Sag

FENG Zhen-DONG, DAI Jun-sheng, LIU Jing-DONG

Department of Petroleum Resources Sciences, University of Petroleum, Qingdao, ShanDONG 266555, China

Received:2009-09-13 Revised:2009-09-13 Online:2010-08-01 Published:2020-10-19

摘要/Abstract

摘要： 在油藏级别划分的基础上,研究了饶阳凹陷201 个油藏储量规模的分形曲线,认为该区今后勘探工作中发现112×10⁴t 级别以上的油藏难度较大,28×10⁴~112×10⁴t 的油藏有一定的勘探潜力,大量28×10⁴t 以下的油藏待探明;计算前古近系、沙河街组、东营组、新近系4 个层位油藏储量规模的分形维数,并统计各层系油藏的分形特征值,认为沙河街组勘探潜力最大,其次为东营组,新近系发现油藏的概率大于前古近系,但发现30×10⁴t 以上油藏的机会不如后者;通过对比整体、前古近系、沙河街组油藏空间分布的分形特征,发现整体分形维数远大于分层分形维数。分形维数的大小反映含油面积,而不能直接代表储量的大小。

关键词: 饶阳凹陷, 储量规模, 空间分布, 分形, 分形维数

Abstract: Based on the classification of reservoir grade, the reserves fractal curves of 201 reservoirs in Raoyang sag are studied. The results indicate that in future exploration it is difficult to find reservoirs with more than 112×10⁴t reserves; the reservoirs with (28~112)×10⁴t reserves are of certain exploration potentials, and most reservoirs with less than 28×10⁴t reserves are to be proven. By calculating the fractal dimensions of reserves of pre-Paleogene, Shahejie formation, DONGying formation and Neogene reservoirs and counting fractal eigenvalues of reservoirs of every sequence, it is suggested that Shahejie formation is of the greatest exploration potential, followed by DONGying formation, Neogene and pre-Paleogene. However, there are more opportunities to find reservoirs with more than 30 ×10⁴t reserves in pre-Paleogene than that in Neogene. By comparison among fractal characters of spatial distribution of all reservoirs, pre- Paleogene reservoirs and Shahejie reservoirs, it is found that the whole fractal dimension (D) is much greater than layered fractal dimension, so the size of D only reflects the oil-bearing area, but it can not represent the size of reserves directly.

Key words: Raoyang sag, reserves scale, spatial distribution, fractal, fractal dimension

中图分类号:

TE16

冯阵东, 戴俊生, 刘景东. 饶阳凹陷油藏储量在空间分布的分形特征[J]. 新疆石油地质, 2010, 31(4): 372-374.

FENG Zhen-DONG, DAI Jun-sheng, LIU Jing-DONG. Fractal Characters of Oil Reserves in Spatial Distribution in Raoyang Sag[J]. Xinjiang Petroleum Geology, 2010, 31(4): 372-374.

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