[1]曲占庆,翟恒立,田相雷,等.考虑压敏效应的变启动压力梯度试验研究[J].石油钻探技术,2012,40(03):78-82.[doi:10.3969/j.issn.1001-0890.2012.03.016]
 Qu Zhanqing,Zhai Hengli,Tian Xianglei,et al.Experimental Research on Variable Threshold Pressure Gradient Considering Pressure Sensitive Effect[J].Petroleum Drilling Techniques,2012,40(03):78-82.[doi:10.3969/j.issn.1001-0890.2012.03.016]
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《石油钻探技术》[ISSN:1001-0890/CN:11-1763/TE]

卷:
40卷
期数:
2012年03期
页码:
78-82
栏目:
油气开采
出版日期:
2012-05-25

文章信息/Info

Title:
Experimental Research on Variable Threshold Pressure Gradient Considering Pressure Sensitive Effect
作者:
曲占庆1 翟恒立1 田相雷2 崔全义3 温庆志1
1. 中国石油大学(华东)石油工程学院, 山东青岛 266580;
2. 中国石化胜利油田分公司现河采油厂, 山东东营 257000;
3. 胜利油田东胜精攻石油开发集团股份有限公司, 山东东营 257000
Author(s):
Qu Zhanqing1 Zhai Hengli1 Tian Xianglei2 Cui Quanyi3 Wen Qingzhi1
1. College of Petroleum Engineering, China University of Petroleum(Huadong), Qingdao, Shandong, 266580, China;
2. Xianhe Oil Production Plant, Sinopec Shengli Oilfield Company, Dongying, Shandong, 257000, China;
3. Dongsheng Jinggong Petroleum Devel
关键词:
低渗透油气藏变形介质压敏效应启动压力梯度非达西流
Keywords:
low permeability reservoirdeformation mediumpressure sensitive effectthreshold pressure gradientnon-Darcy flow
分类号:
TE312
DOI:
10.3969/j.issn.1001-0890.2012.03.016
摘要:
低渗透变形介质油藏中流体渗流不服从达西定律,存在启动压力以及较强的压敏效应,压敏效应会对启动压力梯度产生影响。采用模拟地层水驱替存在较强压敏效应的天然岩心,测得了有效应力变化对孔隙度和渗透率的影响和单相水驱时的启动压力梯度,获得了不同有效应力作用下的孔隙度和渗透率及不同渗透率岩心所对应的启动压力梯度。采用最小二乘法对试验数据进行回归,得到了孔隙度和渗透率随有效应力变化的模型、启动压力梯度随渗透率变化的模型及考虑压敏效应的启动压力梯度数学模型,提出了变启动压力梯度的概念。研究表明,低渗透变形介质油藏的启动压力梯度随有效应力的增大而增大;在生产过程中应选择合理的生产压差和注水时机,保持合理的地层压力,防止启动压力梯度增大对产量造成影响。
Abstract:
Due to strong threshold pressure gradient and pressure sensitive effect Darcy’s Law cannot be used to describe fluid flow in low permeability reservoirs.To investigate the effect of effective stress on porosity and permeability as well as measuring the threshold pressure gradient in water flooding,natural cores which have strong pressure sensitivity were flooded using simulated formation water in the laboratory.Porosity and permeability under various effective stresses and threshold pressure gradient were obtained from the experiments.The mathematical model of threshold pressure gradient considering pressure sensitivity was established through the experimental data’s regression by using least square method.The concept of variable threshold pressure gradient was put forward in which threshold pressure gradient will increase as effective stress increases in low permeability reservoir.So,reasonable production pressure drop and the appropriate water flooding timing should be determined so as to prevent the impact of threshold pressure gradient on production.

参考文献/References:

[1] 李星民,杨胜来,张建伟,等.高凝油渗流中启动压力梯度及其影响因素研究[J].石油钻探技术,2009,37(5):114-117. Li Xingmin,Yang Shenglai,Zhang Jianwei,et al.Measurement of starting pressure gradient and affecting factors in the seepage process of high-wax oil[J].Petroleum Drilling Techniques,2009,37(5):114-117.
[2] 李晓良,王厉强,李彦,等.启动压力梯度动态变化对IPR方程影响分析[J].石油钻探技术,2007,35(2):70-72. Li Xiaoliang,Wang Liqiang,Li Yan,et al.Effect of starting pressure gradient dynamic change on IPR equation[J].Petroleum Drilling Techniques,2007,35(2):70-72.
[3] 李爱芬,刘敏,张化强,等.低渗透油藏油水两相启动压力梯度变化规律研究[J].西安石油大学学报:自然科学版,2010,25(6):47-54. Li Aifen,Liu Min,Zhang Huaqiang,et al.Experimental study on threshold pressure gradient of oil-water two-phase seepage in low permeability reservoirs[J].Journal of Xi’an Shiyou University:Natural Science Edition,2010,25(6):47-54.
[4] 熊伟,雷群,刘先贵,等.低渗透油藏拟启动压力梯度[J].石油勘探与开发,2009,36(2):232-235. Xiong Wei,Lei Qun,Liu Xiangui,et al.Pseudo threshold pressure gradient to flow for low permeability reservoirs[J].Petroleum Exploration and Development,2009,36(2):232-235.
[5] 田冷,何顺利,李秀生.低渗透气田砂岩储层应力敏感试井模型研究[J].石油钻探技术,2007,35(6):89-92. Tian Leng,He Shunli,Li Xiusheng.Study of well test of stress-sensitive sandstone in low permeability gas reservoir[J].Petroleum Drilling Techniques,2007,35(6):89-92.
[6] 孙峰,薛世峰,葛洪魁,等.疏松砂岩应力损害分析评价[J].石油钻探技术,2008,36(5):47-50. Sun Feng,Xue Shifeng,Ge Hongkui,et al.Numerical simulation of stress-induced wellbore damage in unconsolidated sand- stone reservoirs[J].Petroleum Drilling Techniques,2008,36(5):47-50.
[7] 李传亮.储层岩石的应力敏感性问题[J].石油钻采工艺,2006,28(6):86-88. Li Chuanliang.Discussion on the stress sensitivity of reservoir rocks[J].Oil Drilling & Production Technology,2006,28(6):86-88.
[8] SY/T 5336-2006 岩心分析方法[S]. SY/T 5336-2006 Practices for core analysis[S].
[9] 刘建军,刘先贵.有效压力变化对低渗透多孔介质孔隙度、渗透率的影响[J].地质力学学报,2001,7(1):41-44. Liu Jianjun,Liu Xiangui.The effect of effective pressure on porosity and permeability on low permeability porous media[J].Journal of Geomechanics,2001,7(1):41-44.
[10] 秦积舜.变围压条件下低渗砂岩储层渗透率变化规律研究[J].西安石油学院学报:自然科学版,2002,17(4):28-35. Qin Jishun.Variation of the permeability of the low-permeability sandstone reservoir under variable confined pressure[J].Journal of Xi’an Petroleum Institute:Natural Science Edition,2002,17(4):28-35.
[11] 孙广忠.岩体结构力学[M].北京:科学出版社,1994:109-182. Sun Guangzhong.Rock structural mechanics[M].Beijing:Science Press,1994:109-182.
[12] 李忠兴,韩洪宝.特低渗油藏启动压力梯度新的求解方法及应用[J].石油勘探与开发,2004,30(3):109-111. Li Zhongxing,Han Hongbao.The new calculated method and the application of starting pressure gradient in low permeability reservoir[J].Petroleum Exploration and Development,2004,30(3):109-111.
[13] Farquhar R A, Smart B G D, Todd A C,et al. Stress sensitivity of low permeability sandstones from the rotliegendes sandstone. SPE 26501,1993.
[14] 阮敏,王连刚.低渗透油田开发与压敏效应[J].石油学报,2002,23(3):73-76. Ruan Min,Wang Liangang.Low-permeability oilfield development and pressure-sensitive effect[J]. Acta Petrolei Sinica,2002,23(3):73-76.
[15] 陈明强,蒲春生.变形介质低渗透油藏油井真实产能计算与分析[J].西安石油大学学报:自然科学版,2006,21(2):18-22. Chen Mingqiang,Pu Chunsheng.Calculation and analysis of the true productivity of a well of low permeable reservoirs of deformation medium[J].Journal of Xi’an Shiyou University:Natural Science Edition,2006,21(2):18-22.

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[9]田 冷,何顺利,李秀生.低渗透气田砂岩储层应力敏感试井模型研究[J].石油钻探技术,2007,35(06):89.
[10]文 华,刘义坤,孙 娜,等.低渗透压敏油藏油井流入动态方程及其应用[J].石油钻探技术,2007,35(06):105.

备注/Memo

备注/Memo:
收稿日期:2011-5-27;改回日期:2012-3-27。
基金项目:国家自然科学基金项目"MES胶束/纳米TiO2自组装体系流变动力学研究"(编号:50904076)资助
作者简介:曲占庆(1963-),男,山东莱州人,1986年毕业于华东石油学院采油工程专业,2006年获得中国石油大学(华东)油气田开发工程专业博士学位,教授,博士生导师,主要从事油气田开发方面的教学及科研工作.
更新日期/Last Update: 1900-01-01