润湿性对模拟原油微尺度流动和渗流的影响

doi:10.7623/syxb201002022

石油学报 ›› 2010, Vol. 31 ›› Issue (2): 302-305.DOI: 10.7623/syxb201002022

润湿性对模拟原油微尺度流动和渗流的影响

王斐 1 岳湘安 1 王雯靓 2 刘怀珠 3 唐思睿 4 张羽 1 王宝祥 5

1中国石油大学石油工程教育部重点实验室，提高采收率研究中心北京 102249； 2川庆钻探工程有限公司川西钻探公司四川成都 610000； 3中国石油冀东油田钻采工艺研究院河北唐山 063004； 4长庆油田公司油田开发处陕西西安 710018； 5安东石油技术有限公司北京 100102

收稿日期:2009-02-18 修回日期:2009-04-17 出版日期:2010-03-25 发布日期:2013-10-31
通讯作者: 王斐

Influence of wettability on micro-scale flow and seepage characteristics of simulated crude oil

WANG Fei 1 YUE Xiang’an 1 WANG Wenliang 2 LIU Huaizhu 3 TANG Sirui 4 ZHANG Yu 1 WANG Baoxiang 5

Received:2009-02-18 Revised:2009-04-17 Online:2010-03-25 Published:2013-10-31
Contact: WANG Fei

摘要/Abstract

摘要：

考察了流体在不同润湿性条件下在低渗透多孔介质微米量级孔喉中流动的渗流特性,实验研究了模拟原油（航空煤油与胜利油田原油以5∶1的体积比配制）在内径为14.9 μm、5.03 μm、2.05 μm的亲水和憎水微圆管中的流动特性。结果表明，模拟原油在5.03 μm和2.05 μm亲水和憎水微管中的流动均出现了明显的微尺度效应，流动规律均偏离经典理论,且模拟原油在亲水微管中的流量高于其在憎水微管中的值。根据微管实验数据，利用毛管束模型分析了润湿性对模拟原油在多孔介质中渗流特性的影响。在考虑微尺度效应的条件下，模拟原油在低渗透多孔介质中的流动为非线性渗流，润湿性显著影响。在其他条件相同时，模拟原油在亲水模型中的视渗透率大于其在憎水模型中的值。

关键词: 模拟原油, 润湿性, 非线性渗流, 毛管束模型, 微尺度效应, 流体流动, 渗流特性

Abstract:

The seepage characteristics of fluid flowing in the countless micro-sized pores were investigated under the different wettability condition. The simulated crude oil mixed by the aviation kerosene and crude oil from Shengli Oilfield with a volume ratio of 5∶1 were experimentally studied to flow in the hydrophilic and hydrophobic microtubes with diameters of 14.9μm, 5.03μm and 2.05μm respectively. The flow characteristics of the simulated crude oil flowing in the hydrophilic and hydrophobic microtubes with diameters of 5.03μm and 2.05μm significantly departed from the prediction of conventional theory, which were influenced strongly by the wettabilities of the microtubes, and the flow rate in the hydrophilic microtubes was larger than that in the hydrophobic microtubes with the same diameters and pressure gradients. Based on the experiment data of microtubes, the influence of wettability on seepage characteristics of the simulated crude oil flowing in the porous media was analyzed with the capillary bundle model. The flows of the simulated crude oil in low-permeability porous media are nonlinear and influenced by the wettability of microtubes when the micro-scale effect is considered. The apparent permeability of simulated crude oil in the hydrophilic model is larger than that in the hydrophobic model.

Key words: simulated crude oil, wettability, nonlinear seepage, capillary bundle model, micro-scale effect, fluid flow, seepage characteristics

王斐岳湘安王雯靓刘怀珠唐思睿张羽王宝祥. 润湿性对模拟原油微尺度流动和渗流的影响[J]. 石油学报, 2010, 31(2): 302-305.

WANG Fei YUE Xiang’an WANG Wenliang LIU Huaizhu TANG Sirui ZHANG Yu WANG Baoxiang. Influence of wettability on micro-scale flow and seepage characteristics of simulated crude oil[J]. Editorial office of ACTA PETROLEI SINICA, 2010, 31(2): 302-305.

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润湿性对模拟原油微尺度流动和渗流的影响

Influence of wettability on micro-scale flow and seepage characteristics of simulated crude oil

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