油气藏评价与开发 ›› 2018, Vol. 8 ›› Issue (4): 1-5.

• 油气地质 • 上一篇    下一篇

海上河流相储层应用地质模型计算储量的不确定性分析

薛艳霞,廖新武,霍春亮,胡勇,张如才   

  1. 中海石油(中国)有限公司天津分公司渤海石油研究院,天津 300459
  • 收稿日期:2018-01-26 出版日期:2018-08-26 发布日期:2018-11-12
  • 作者简介:薛艳霞(1980—),女,工程师,开发地质及储层地质建模。
  • 基金资助:
    中海石油(中国)有限公司科技重大专项“渤海海域复杂碎屑岩储层地质建模研究”(YXKY-2011-TJ-01)

Uncertainty analysis of reserves of fluvial reservoir calculated by geological model

Xue Yanxia,Liao Xinwu,Huo Chunliang,Hu Yong,Zhang Rucai   

  1. Bohai Petroleum Research Institute, Tianjin Branch of CNOOC Limited, Tianjin 300459, China
  • Received:2018-01-26 Online:2018-08-26 Published:2018-11-12

摘要:

影响海上河流相储层地质模型储量不确定性变量有构造、平面变差函数、储层属性与地震属性的相关性、束缚水饱和度、有效储层下限值、体积系数和油水界面等。分析了不确定性变量产生的根源,并以渤海Q油田为例,综合应用Monte-Carlo计算方法和随机建模技术,定量评价了不确定性变量对油田储量产生的影响,得到储量的概率累积分布曲线及悲观的(P90)、期望的(P50)和乐观的(P10)3个概率储量值,预测了储层储量存在的风险和潜力。

关键词: 河流相, 随机建模, 不确定性变量, Monte-Carlo计算, 概率储量

Abstract:

The reserves of the geological model in the offshore fluvial reservoirs are influenced by the uncertain parameters, such as the structure, plane variogram, correlation between reservoir properties and seismic attributes, irreducible water saturation, lower limiting value of effective reservoir, volume coefficient, and oil-water interface. The root that causes these uncertain parameters is analyzed. Meanwhile, taking oilfield-Q in Bohai bay as an example, and by the integrated application of the Monte-Carlo method and stochastic modeling, the effects of the uncertainty parameters on the reserves are estimated quantitatively. The probability cumulative distribution curves of reserves and 3 probability reserve value which are the pessimistic reserves(P90), expected reserves(P50) and optimistic reserves(P10) are obtained to predict the risk and potential of the reserves.

Key words: fluvial facies, stochastic modeling, uncertainty parameters, Monte-Carlo method, probability of reserve

中图分类号: 

  • TE155