利用探针法研究层间非均质模型水驱开发效果
Study on Development Effect of Water Drive in Interlayer Heterogeneous Model by Using Probe Method
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- 引用格式:
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李桂云,杨胜来,李武广,娄,毅,李芳芳.利用探针法研究层间非均质模型水驱开发效果[J].天然气与石油,2013,31(2):0.doi:
.Study on Development Effect of Water Drive in Interlayer Heterogeneous Model by Using Probe Method[J].Natural Gas and Oil,2013,31(2):0.doi:
- DOI:
- 作者:
- 李桂云 杨胜来 李武广 娄 毅 李芳芳
- 作者单位:
- 中国石油大学（北京）石油工程教育部重点实验室
- 关键词:
- 层间非均质；饱和度探针法；物理模拟实验；饱和度图；采出程度
Interlayer heterogeneity； Saturation probe method； Physical simulation experiment； Saturation diagram； Recovery degree
- 摘要:
- 油水运移及波及规律的研究是非均质油藏开发重点，为了在驱替过程中有效监测层间非均质各模型同一时刻的油水运移规律，清楚地了解油水剖面移动情况，依据油水在电性上的差异，利用饱和度探针法测量非均质模型水驱过程中的油水饱和度变化，方便人们随时掌握驱替动态及波及程度。三块模型同时水驱开采的情况下500 mD模型采出程度最高为63.35 %，150 mD模型采出程度为49.06 %，30 mD模型采出程度为23.44 %，关闭高渗模型，150 mD和30 mD的采出程度分别提高到56.79 %和48.57 %。结果表明层间非均质油藏开发时，注入水主要沿高渗层流动，在开发后期通过封堵高渗层使注入流体向中低渗层流动，可有效提高中低渗层的采出程度。对单块模型来说，将开发井网由五点法调整为九点法，可有效提高模型波及程度，从而提高采收率。使用大型物理模型符合油田实际，实验结果实用性较强，所得规律可以应用于油田实际开发。
Study on migration and spread rules of oil and water is the key in homogeneous reservoir development. In order to effectively monitor migration and spread rules of oil and water in each interlayer heterogeneous model at the same time， it is necessary to understand clearly oil and water profile movement and adopt saturation probe method to measure saturation change during heterogeneous model water flooding according to electrical differences in oil and water so as to keep track of displacement dynamic and spread degree. Analyzed are recovery degrees of such three models 500 mD， 150 mD and 30 mD in water flooding exploitation condition and the model 500 mD has the highest recovery degree， up to 63.35 %. Analysis results show that in interlayer heterogeneous reservoir development， injected water flows along the high permeability layer， and in the later period of development， plugging of the high permeability layer may make the injected fluid flow to the low permeability layer so as to improve recovery degree of high， medium and low permeability layers.
