L油田古近系油藏含水率计算方法及其应用

张伟; 冯进; 胡文亮; 夏瑜

doi:10.11911/syztjs.201601020

L油田古近系油藏含水率计算方法及其应用

1.
中海石油(中国)有限公司深圳分公司, 广东广州 510240;
2.
中海石油(中国)有限公司上海分公司, 上海 200335

详细信息

作者简介:
张伟(1973-),男,四川成都人,1995年毕业于西南石油学院石油工程专业,2008年获英国赫里欧·瓦特大学石油工程专业硕士学位,高级工程师,主要从事油气田开发和开釆方面的研究工作。E-mailzhangwei1@cnooc.com.cn。

中图分类号: TE32⁺7
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出版历程
- 收稿日期: 2015-06-23
- 修回日期: 2015-12-15
- 刊出日期: 1899-12-31

Calculation Method and Application for Water Content of Paleogene Reservoirs in L Oilfield

1.
Shenzhen Branch of CNOOC Ltd., Shenzhen, 510240, China;
2.
Shanghai Branch of CNOOC Ltd., Shanghai, 200335, China

摘要

摘要: 珠江口盆地L油田古近系油藏储层非均质性强、油水关系复杂,常规流体性质识别方法难以满足测井评价需求。利用多相共渗分流量原理定量计算储层的含水率,判断储层的产液性质;在含油饱和度下限研究中引入含水率,并结合油层含水率的上限标准,利用解析法得到含水率、孔隙度与含油饱和度的关系,确定不同类型储层对应的含油饱和度下限。在L油田含水率定量识别储层流体性质的应用中,定量计算结果与测试、生产结果相符;确定了L油田Ⅰ类、Ⅱ类和Ⅲ类储层对应的含油饱和度下限分别为59%,48%和35%;同时,拟合得到含油饱和度下限与孔隙度之间的关系式,Ⅲ类储层对应的含油饱和度下限为35%。应用结果表明,根据含水率能够定量判断储层的产液性质;不同类型储层含油饱和度下限与孔隙度呈指数函数递增关系,可定量确定不同类型储层含油饱和度下限。
- 测井 /
- 含水率 /
- 相对渗透率 /
- 流体性质识别 /
- 含油饱和度
Abstract: Paleogene reservoirs in the L Oilfield have strong heterogeneity and complex oil and water layers, so the conventional techniques for identification of fluid properties can hardly meet the demands of logging evaluation. By using the multiphase permeability flow distribution theory, the water contents of reservoirs can be calculated quantitatively to determine properties of produced fluids accurately. The water content was applied to study the lower limit of oil saturation, combined with upper limit of water content in oil reservoirs, the relationship among water contents, porosity and oil saturation can be determined by using analytical method to obtain the lower limit of oil saturations in different types of reservoirs. The quantitative calculating results for identificating reservoir fluid properties in the L Oilfield have coincidence rates above 90% with that of testing and actual production. The lower limits of oil saturation were determined as follows: 59% for class one reservoir, 48% for class two reservior, and 35% for class three reservoir. In addition, the functional equation of oil saturation lower limit and porosity has been obtained by fitting method, the lower limit of oil saturation was 35% corresponding to the class three reservoir. The application result showed that water content could be used to quantitatively determine the properties of the produced fluids. The lower limit of oil saturation increased at an exponential function with porosity in different types of reservoirs, which could be quantitatively determine the lower limit of oil saturation in different types of reservoirs.
- well logging /
- water cut /
- relative permeability /
- fluid property identification /
- oil saturation

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L油田古近系油藏含水率计算方法及其应用

作者简介: 张伟(1973-),男,四川成都人,1995年毕业于西南石油学院石油工程专业,2008年获英国赫里欧·瓦特大学石油工程专业硕士学位,高级工程师,主要从事油气田开发和开釆方面的研究工作。E-mailzhangwei1@cnooc.com.cn。

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Calculation Method and Application for Water Content of Paleogene Reservoirs in L Oilfield

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作者简介:
张伟(1973-),男,四川成都人,1995年毕业于西南石油学院石油工程专业,2008年获英国赫里欧·瓦特大学石油工程专业硕士学位,高级工程师,主要从事油气田开发和开釆方面的研究工作。E-mailzhangwei1@cnooc.com.cn。