[1]陈民锋,陈璐,张琪琛,等.低渗透油藏改造后水平井压力分布规律[J].深圳大学学报理工版,2016,33(4):401-408.[doi:10.3724/SP.J.1249.2016.04401]
　Chen Minfeng,Chen Lu,Zhang Qichen,et al.Field pressure distribution of horizontal wells in low permeable stimulated reservoirs[J].Journal of Shenzhen University Science and Engineering,2016,33(4):401-408.[doi:10.3724/SP.J.1249.2016.04401]
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低渗透油藏改造后水平井压力分布规律()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第33卷
期数:
2016年第4期
页码:
401-408
栏目:
环境与能源
出版日期:
2016-07-12

文章信息/Info

Title:
Field pressure distribution of horizontal wells in low permeable stimulated reservoirs
文章编号:
201604009
作者:
陈民锋1; 陈璐1; 张琪琛1; 王兆琪1; 杨曜宁2
1）中国石油大学（北京）石油工程学院，北京102249
2）中国石油长庆油田公司第二采油厂，甘肃庆阳745100
Author(s):
Chen Minfeng1;  Chen Lu1;  Zhang Qichen1;  Wang Zhaoqi1;  and Yang Yaoning2
1) College of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, P.R.China
2) PetroChina Changqing Oil Field Company, Qingyang 745100, Gansu Province, P.R.China
关键词:
低渗透油藏; 启动压力梯度; 水平井; 储层改造; 压力分布; 极限动用半径
Keywords:
low permeable reservoirs;  threshold pressure gradient;  horizontal wells;  reservoir stimulation;  pressure distribution;  limit drainage radius
分类号:
TE 348
DOI:
10.3724/SP.J.1249.2016.04401
文献标志码:
A
摘要:
水平井结合储层近井改造开发低渗、特低渗透油藏时，地层压力呈复杂分布规律，直接影响油藏储量的动用效果．基于低渗透油藏的基本渗流理论，考虑储层改造后储层物性大小和分布的变化，在得到直井稳态渗流压力分布计算公式的基础上，引入适当的保角变换函数，通过保角变换建立低渗透储层改造后水平井在三维空间上的压力分布计算模型．结合实际油藏参数，利用逐次稳态法，研究水平井在水平平面和垂直平面的压力传播，得到在不同储层改造条件下水平井在三维空间上的压力分布规律，确定相应条件下低渗透油藏水平井开发极限动用半径，有效指导此类油藏的开发．
Abstract:
It has been proved that when using horizontal wells to develop low and ultra-low permeable reservoirs based on stimulation, changes of pressure distribution in formation can be quite complex and may have impact on limit reserves. According to the theory of basis seepage flow about low permeable reservoirs, we analyzed the variation of the reservoirs’ property after their reforms and obtained the formula about pressure distribution of steady-state seepage of a vertical well. Then by using the proper function of conformal transformation, we built the three-dimensional mathematical model of pressure distribution of horizontal wells in low permeable reservoirs after reforms. Combining with actual reservoir parameters, we studied the transmission of pressure on the horizontal and vertical plane of a horizontal well by using steady-state successive approximations. And in turn, the limit drainage radius under the corresponding conditions could be predicted. To sum up, our research would be helpful for developing the low and ultra-low permeable reservoirs more effectively and efficiently.

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备注/Memo

备注/Memo:
Received：2015-07-11；Revised：2016-03-03；Accepted：2016-04-23
Foundation：National Basic Research Program of China (2015CB250905)
Corresponding author：Associate professor Chen Minfeng. E-mail: cmfllp96@126.com
Citation：Chen Minfeng, Chen Lu, Zhang Qichen, et al. Field pressure distribution of horizontal wells in low-permeable stimulated reservoirs［J］. Journal of Shenzhen University Science and Engineering, 2016, 33(4): 401-408.（in Chinese）
基金项目：国家重点基础研究发展计划资助项目（2015CB250905）
作者简介：陈民锋（1971—），男，中国石油大学（北京）副研究员、博士. 研究方向：油田开发系统理论方法和油藏提高采收率技术研究．E-mail：cmfllp96@126.com
引文：陈民锋，陈璐，张琪琛，等，低渗透油藏改造后水平井压力分布规律［J］. 深圳大学学报理工版，2016，33（4）：401-408.
更新日期/Last Update: 2016-06-23