致密油藏微纳米喉道中的边界层特征

计算物理 ›› 2016, Vol. 33 ›› Issue (6): 717-725.

致密油藏微纳米喉道中的边界层特征

田虓丰¹, 程林松², 曹仁义², 安娜², 张苗怡¹, 王翊民³

1. 中海油研究总院, 北京 100028;
2. 中国石油大学(北京)石油工程学院, 北京 102249;
3. 中海石油天津分公司工程技术作业中心, 天津 300452

收稿日期:2015-11-27 修回日期:2016-02-14 出版日期:2016-11-25 发布日期:2016-11-25
作者简介:田虓丰(1988-),男,博士,工程师,主要从事油气渗流方向研究,E-mail:txf5160@163.com
基金资助:
国家973（2015CB250902）及高等学校博士学科点专项科研基金（20130007120014）资助项目

Characteristics of Boundary Layer in Micro and Nano Throats of Tight Sandstone Oil Reservoirs

TIAN Xiaofeng¹, CHENG Linsong², CAO Renyi², AN Na², ZHANG Miaoyi¹, WANG Yimin³

1. CNOOC Research Institute, Beijing 100028, China;
2. China University of Petroleum, Beijing 102249, China;
3. Department of Engineering and Technology, Tianjin Branch of China National Offshore Oil Corporation, Tianjin 300452, China

Received:2015-11-27 Revised:2016-02-14 Online:2016-11-25 Published:2016-11-25

摘要/Abstract

摘要： 通过引入吸引力修正耗散粒子动力学（DPD）方法，实现流体和固体的相互吸引作用，模拟纳米喉道中的微尺度流动，探讨边界层的产生机理，结合微圆管实验，定量表征微纳米喉道中边界层的特征，明确微纳米喉道中边界层的影响因素.研究发现：分子尺度，热运动对速度影响很大；超过分子尺度，压差占主导作用.热运动使粒子在原位置振动，不改变粒子的整体移动方向.随着喉道半径的增大，泊肃叶流动的抛物线特征越来越明显.边界层厚度受压力梯度、喉道半径和流体粘度的影响.当压力梯度增大或流体粘度减小时，边界层厚度增大；当喉道半径减小时，边界层厚度先增大后减小.边界层厚度是导致非线性渗流特征的根本原因.随着边界层厚度增大，非线性渗流特征越来越明显.

关键词: 致密油藏, 微纳米喉道, 耗散粒子动力学, 流体力学, 边界层

Abstract: Dissipative particle dynamics (DPD) is modified by introducing attractive force. Attractive interaction of liquid and solid and micro-scale flow in nano throats is simulated to discuss mechanism of boundary layer. It is found that thermal motion affects velocity significantly in molecular scale while pressure gradient is leading function as greater than molecular scale. However, thermal motion cannot change integral moving direction. As throat radius becomes larger, parabola shape of velocity distribution becomes more and more obvious. Boundary layer thickness is affected by pressure gradient, throat radius and fluid viscosity. As pressure gradient increases and fluid viscosity decreases, boundary layer thickness decreases. As throat radius decreases, boundary layer thickness increases first and then decreases. Boundary layer is essential reason of nonlinear flow behavior and thickness of boundary layer increasing makes nonlinear flow behavior more obvious.

Key words: tight sandstone oil reservoir, micro and nano throat, dissipative particle dynamics, fluid mechanics, boundary layer

中图分类号:

TE312

田虓丰, 程林松, 曹仁义, 安娜, 张苗怡, 王翊民. 致密油藏微纳米喉道中的边界层特征[J]. 计算物理, 2016, 33(6): 717-725.

TIAN Xiaofeng, CHENG Linsong, CAO Renyi, AN Na, ZHANG Miaoyi, WANG Yimin. Characteristics of Boundary Layer in Micro and Nano Throats of Tight Sandstone Oil Reservoirs[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2016, 33(6): 717-725.

参考文献

[1] 杨正明,刘先贵,张仲宏,等. 特低-超低渗透油藏储层分级评价和井网优化数值模拟技术[M]. 北京:石油工业出版社, 2012:17-19.
[2] 贾承造,邹才能,李建忠,等. 中国致密油评价标准、主要类型、基本特征及资源前景[J]. 石油学报, 2012, 33(03):343-350.
[3] 杨华,李士祥,刘显阳. 鄂尔多斯盆地致密油、页岩油特征及资源潜力[J]. 石油学报, 2013, 34(01):1-11.
[4] TIAN X, CHENG L, LI C, et al. A model for stress sensitivity measured by liquid in tight oil reservoirs[J]. Chinese Journal of Computational Physics, 2015, (03):334-342.
[5] 温久然,刘开平,孙志华,等. TiO₂/SiO₂复合薄膜对玻璃亲水性的影响[J]. 表面技术, 2014, 43(01):90-94+118.
[6] 张生,李统锦. 二氧化硅溶解度方程和地温计[J]. 地质科技情报, 1997, 16(01):55-60.
[7] 马尔哈辛И Л. 油层物理化学机理[M]. 北京:石油工业出版社, 1998:36-48.
[8] 徐绍良,岳湘安,侯吉瑞. 去离子水在微圆管中流动特性的实验研究[J]. 科学通报, 2007, 52(01):120-124.
[9] 徐绍良,岳湘安,侯吉瑞,等. 边界层流体对低渗透油藏渗流特性的影响[J]. 西安石油大学学报(自然科学版), 2007, 22(02):26-28+175.
[10] 李洋,雷群,刘先贵,等. 微尺度下的非线性渗流特征[J]. 石油勘探与开发, 2011, 38(03):336-340.
[11] 王斐,岳湘安,王雯靓,等. 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(02):302-305.
[12] 唐元晖,何彦东,王晓琳. 耗散粒子动力学及其应用的新进展[J]. 高分子通报, 2012, 1:8-14.
[13] 沙华,孙玲,刘东雷. DPD方法在软物质模拟领域的研究及应用进展[J]. 材料导报, 2014, 28(05):117-121.
[14] LI X, SONG J, YUAN J. Mesoscopic simulation of rheology of polymer solution[C]. International Oil and Gas Conference and Exhibition in China, Beijing, 2010.
[15] TANDON K, FRAAIJE J G E M, JAIN A. Accelerated surfactant selection for EOR using computational methods[C]. SPE Enhanced Oil Recovery Conference, Kuala Lumpur, Malaysia, 2013.
[16] KUMAR A, ASAKO Y, ABU-NADA E, et al. From dissipative particle dynamics scales to physical scales:A coarse-graining study for water flow in microchannel[J]. 2009, 7:467-477.
[17] 宋付权,于玲. 液体在润湿性微管中流动的边界负滑移特征[J]. 水动力学研究与进展A辑, 2013, 28(02):128-134.
[18] REVENGA M, ZUNIGA I, ESPANOL P. Boundary conditions in dissipative particle dynamics[J]. Comp Phys Commun, 1999, 121(3):309-311.
[19] GROOT R D, WARREN P B. Dissipative particle dynamics:Bridging the gap between atomistic and mesoscopic simulation[J]. The Journal of Chemical Physics, 1997, 107(11):4423-4435.
[20] SATOH A, MAJIMA T. Comparison between theoretical values and simulation results of viscosity for the dissipative particle dynamics method[J]. Journal of Colloid and Interface Science, 2005, 283(1):251-266.
[21] 李中锋,何顺利. 低渗透储层原油边界层对渗流规律的影响[J]. 大庆石油地质与开发, 2005, 24(02):57-59,77-107.
[22] 李洋. 微尺度下非线性流动特征及降低流动阻力的研究[D]. 北京:中国科学院研究生院(渗流流体力学研究所), 2010.
[23] 杨树人,汪志明,何光渝,等. 工程流体力学[M]. 北京:石油工业出版社, 2006:109-111.
[24] PURCELL W R. Capillary pressures-Their measurement using mercury and the calculation of permeability therefrom[J]. Journal of Petroleum Technology, 1949, 1(2):39-48.