[1]钟张起,刘振旺.低渗透储层拟渗流门限理论确定含水饱和度[J].复杂油气藏,2018,(01):43.[doi:10.16181/j.cnki.fzyqc.2018.01.009]
　ZHONG Zhangqi,LIU Zhenwang.Determination of water saturation by using pseudo percolation thresholdtheory in low permeability reservoirs[J].Complex Hydrocarbon Reservoirs,2018,(01):43.[doi:10.16181/j.cnki.fzyqc.2018.01.009]
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低渗透储层拟渗流门限理论确定含水饱和度()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2018年01期
页码:
43
栏目:
油气开发
出版日期:
2018-03-25

文章信息/Info

Title:
Determination of water saturation by using pseudo percolation thresholdtheory in low permeability reservoirs
作者:
钟张起;  刘振旺
中国石化中原油田分公司濮东采油厂,河南 濮阳 457001
Author(s):
ZHONG Zhangqi;  LIU Zhenwang
Pudong Oil Production Plant of Zhongyuan Oilfield Company,SINOPEC,Puyang 457001,China
关键词:
鄂尔多斯盆地 低渗透储层 拟渗流门限理论 肯尼迪公式 阿奇尔公式 含水饱和度
Keywords:
Ordos Basin;  low permeability reservoir;  pseudo percolation threshold theory;  Kennedy formulation;  Archie formulation;  water saturation
分类号:
TE328
DOI:
10.16181/j.cnki.fzyqc.2018.01.009
文献标志码:
A
摘要:
随着油藏开发的深入研究,发现阿奇尔公式并不具有普适性。鄂尔多斯盆地姬塬地区长6储层物性变化快,非均质性强,微观孔隙结构复杂,油水层的识别准确性需进一步提高。运用拟渗流门限理论,分析影响阿奇尔公式准确性的因素主要有孤立孔隙、导电基质和低地层水矿化度。地层电导率是关于孔隙度和含水饱和度对称的函数。与阿奇尔公式相比,由拟渗流门限理论推导的肯尼迪公式考虑了孤立孔隙、导电基质和地层水矿化度等因素的影响,在实际应用中能提高含水饱和度的精度。根据测井资料、岩心薄片和试油数据,利用肯尼迪公式对长6油层组储层进行含水饱和度和产水率计算,以试油数据为基准,符合率达到81.2%,比阿奇尔公式提高10.5%。应用拟渗流门限理论计算含水饱和度,可以指导研究区及相似低渗透储层的含油性评价。
Abstract:
With the further study on reservoir development, Archie’s formulation has been found to be not universal. Since the reservoir in Chang 6 Formation has characteristics of rapid variation properties, serious heterogeneity and complex microscopic pore structure in Jiyuan area of Ordos Basin, the identification accuracy of oil-water layer need to be further improved. Using the pseudo percolation threshold theory, the factors that affect the accuracy of Archie formula mainly include isolated pores, conductive matrix, and low brine salinity. The formation conductivity is a symmetric function of porosity and water saturation. Compared with Archie formula, Kennedy formula derived from the pseudo percolation threshold theory took into account the effects of isolated porosity, conductive matrix and brine salinity, which can improve the accuracy of water saturation in field applications. According to the logging data, core thin section and test data, the water saturation and water productivity were calculated by using Kennedy formula in the Chang 6 formation. As a criterion with test data, the coincidence rate of water saturation was 85%, with an increase of 10.5% than that of Archie formula. The calculation of water saturation using the percolation threshold theory can guide hydrocarbon evaluation in the research area and similar low permeability reservoirs.

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备注/Memo

备注/Memo:
收稿日期:2017-06-17; 改回日期:2017-08-27。
第一作者简介:钟张起(1975—),博士,工程师,主要从事低渗透油藏地质勘探、开发工程、二氧化碳驱等方面研究工作。E-mail:zhongzhangqi@sina.com。
基金项目:国家科技重大专项“大型油气田及煤层气开发”(编号:2011ZX05001-004)资助。
更新日期/Last Update: 2018-03-25