收稿日期: 2014-11-26
修回日期: 2015-01-08
网络出版日期: 2015-07-10
基金资助
国家科技重大专项“致密砂岩气有效开发评价技术”(编号:2011ZX05013-002)资助.
The Difference between Constant-rate Mercury Injection and Constant-pressure Mercury Injection and the Application in Reservoir Assessment
Received date: 2014-11-26
Revised date: 2015-01-08
Online published: 2015-07-10
阐述了恒速压汞和恒压压汞的原理方法,通过实际岩样的测试分析,比较了2种不同方法的优缺点和适用范围,分析了实验压力对实验结果的影响。恒压压汞测试速度快、实验压力高、可测试孔隙介质的孔径范围广,适宜于大量的生产及科研样品测试;恒速压汞测试速度非常慢,可区分给出孔隙与喉道的不同参数,能更加精确地表征多孔介质的孔隙结构,但目前恒速压汞仪的实验压力相对较低,可测试样品的孔径范围有限,对致密岩样测试获取的参数信息不全面。建议研究者在选用不同方法时,需要提前了解岩样的孔隙分布范围,确定合理的实验压力,一般来说,致密砂岩基质渗透率低于1×10-3μm2以下,对恒速压汞就应慎重使用,而进行恒压压汞时则应增大实验压力,以获得更具代表性的孔隙特征参数。
朱华银,安来志,焦春艳 . 恒速与恒压压汞差异及其在储层评价中的应用[J]. 天然气地球科学, 2015 , 26(7) : 1316 -1322 . DOI: 10.11764/j.issn.1672-1926.2015.07.1316
The theory and method of constant-rate mercury injection and constant-pressure mercury injection is discussed in the paper.Through the testing and analysis of field rock sample,the difference between constant-rate mercury injection and constant-pressure mercury injection advantages and disadvantages and range of application was contrast,and the impact of experiment pressure on the experiment result is analyzed.The characteristics of constant-pressure mercury injection are fast speed,high experiment pressure and wind range pore radius.So it is suitable to test the majority of samples which are used in production and research.The testing speed of constant-rate mercury injection is very slow,and it can provide parameters of pore and throat and characterize the pore structure of porous medium.The experimental pressure of constant-rate mercury injection is low,so the testing sample pore radius range is small and tight rock parameters are incomplete.The scientific researcher should learn the pore radius range of rock sample and determine a reasonable experimental pressure before choosing the mercury injection method.In general,the permeability of tight rock sample is lower than 1×10-3μm2,so the constant-rate mercury injection should be used carefully.In order to acquire more representative pore characteristic parameters,the experimental pressure of constant-pressure mercury injection should be as big as possible.
[1]Yang Shenglai,Wei Junzhi.Reservoir Physics[M].Beijing:Petroleum Industry Press,2004:209-234.[杨胜来,魏俊之.油层物理学[M].北京:石油工业出版社,2004:209-234.]
[2]National Development and Reform Commission.SY/T 5346-2005 Rock Capillary Pressure Measurement[S].Beijing:Petroleum Industry Press,2005.[国家发展和改革委员会.SY/T5346-2005 岩石毛管压力曲线的测定[S].北京:石油工业出版社,2005.]
[3]Zhao Guoxin,Zhu Jiajun,Guan Li.Method of applying capillary pressure data to calculate initial oil saturation[J].Journal of China University of Petroleum:Edition of Natural Science,2008,32(4):38-41.[赵国欣,朱家俊,关丽.用毛管压力资料求取原始含油饱和度的方法[J].中国石油大学学报:自然科学版,2008,32(4):38-41.]
[4]Tian Shubao,Lei Gang,He Shunli,et al.Dynamic effect of capillary pressure in low permeability reservoirs[J].Petroleum Exploration and Development,2012,39(3):378-384.[田树宝,雷刚,何顺利,等.低渗透油藏毛细管压力动态效应[J].石油勘探与开发,2012,39(3):378-384.]
[5]Hu Yong,Yu Xinghe,Chen Gongyang,et al.Classification of the average capillary pressure function and its application in calculating fluid saturation[J].Petroleum Exploration and Development,2012,39(6):733-738.[胡勇,于兴河,陈恭洋,等.平均毛管压力函数分类及其在流体饱和度计算中的应用[J].石油勘探与开发,2012,39(6):733-738.]
[6]Kalaydjian F.Dynamic Capillary Pressure Curve for Water/Oil Displacement in Porous Media:Theory vs Experiment[C].SPE Annual Technical Conference and Exhibition,4-7 October,Washington,D.C.SPE 24813,1992.
[7]Hassanizadeh S,Celia M,Dahle H.Dynamic effect in the capillary pressure-saturation relationship and its impacts on unsaturated flow[J].Vadose Zone Journal,2002,(1):38.
[8]Mirzaei M,Das D B.Dynamic effects in capillary pressure saturations relationships for two-phase flow in 3D porous media:Implications of micro-heterogeneities[J].Chemical Engineering Science,2007,62(7):1927-1947.
[9]Xie Wuren,Yang Wei,Yang Guang,et al.Pore structure features of sandstone reservoirs in the Upper Triassic Xujiahe Formation in the central part of Sichuan Basin[J].Natural Gas Geoscience,2010,21(3):435-440.[谢武仁,杨威,杨光,等.川中地区上三叠统须家河组砂岩储层孔隙结构特征[J].天然气地球科学,2010,21(3):435-440.]
[10]Hao Qian,Zhang Ji,Lu Zhongqi,et al.Microscopic characteristic and its influences on reservoirs from the Su 48 block in the west Sulige Gasfield[J].Natural Gas Geoscience,2012,23(6):1011-1018.[郝骞,张吉,路中奇,等.苏里格气田西区苏48区块储层微观特征及其对储层的影响作用[J].天然气地球科学,2012,23(6):1011-1018.]
[11]He Wenxiang,Yang Le,Ma Chaoya,et al.Effect of micropore structure parameter on seepage characteristics in ultralow permeability reservoir:A case from Chang 6 reservoir of Ordos Basin[J].Natural Gas Geoscience,2011,23(3):477-481.[何文祥,杨乐,马超亚,等.特低渗透储层微观孔隙结构参数对渗流行为的影响——以鄂尔多斯盆地长6储层为例[J].天然气地球科学,2011,23(3):477-481.]
[12]Yang Jian,Kang Yili,Li Qiangui,et al.Characters of micro-structure and percolation in tight sandstone gas reservoirs[J].Advances in Mechanics,2008,38(2):229-236.[杨建,康毅力,李前贵,等.致密砂岩气藏微观结构及渗流特征[J].力学进展,2008,38(2):229-236.]
[13]Yuan H H.Advances in APEX technology determination of cementation exponent and absolute permeability[J].The Log Analyst,1991,32(5):557-570.
[14]Xie Wei,Zhang Chuang,Sun Wei,et al.Application of ASPE technology in pore structure study of Chang 2 reservoir[J].Fault-Block Oil & Gas Field,2011,18(5):549-551.[解伟,张创,孙卫,等.恒速压汞技术在长2储层孔隙结构研究中的应用[J].断块油气田,2011,18(5):549-551.]
[15]Cui Lianxun.Application of constant-rate intruding mercury and nuclear magnetic resonance method to low permeability reservoir evaluation[J].Journal of Chengdu University of Technology:Science & Technology Edition,2012,39(4):430-433.[崔连训.恒速压汞及核磁共振在低渗透储层评价中的应用[J].成都理工大学学报:自然科学版,2012,39(4):430-433.]
[16]Wu Xiaoyu,Luo Minggao,Nie Zhenrong,et al.Application of constant-velocity mercury-injection technology to studying porous structure of reservoir:An example from Kexiao Formation in 7 middle and east areas of Karamay Oilfield[J].Natural Gas Exploration & Development,2012,35(3):28-30.[伍小玉,罗明高,聂振荣,等.恒速压汞技术在储层孔隙结构特征研究中的应用——以克拉玛依油田七中区及七东区克下组油藏为例[J].天然气勘探与开发,2012,35(3):28-30.]
[17]Xu Ying,Pan Youjun,Zhang Zhongjin,et al.Study on pore structure characteristics of low permeability reservoir based on constant velocity mercury penetration experiment[J].Tuha Oil & Gas,2011,16(3):237-242.[徐赢,潘有军,张中劲,等.恒速压汞实验的低渗透储层孔隙结构特征研究[J].吐哈油气,2011,16(3):237-242.]
[18]Yu Junbo,Guo Dianjun,Wang Xinqiang.Study of microscopic of low permeable reservoir through constant velocity mercury injection technique[J].Journal of Daqing Petroleum Instiute,2006,30(2):22-25.[JP3][于俊波,郭殿军,王新强.基于恒速压汞技术的低渗透储层物性特征[J].大庆石油学院学报,2006,30(2):22-25.]
[19]Zhu Yongxian,Sun Wei,Yu Feng.Application of high pressure Hg injection and rate controlled Hg penetration experimental technique to studying reservoir microscopic pore structure:Taking Toutunhe Formation in Niuquanhu area of Santanghu Oilfield as an example[J].Natural Gas Geoscience,2008,19(4):553-556.[朱永贤,孙卫,于锋.应用常规压汞和恒速压汞实验方法研究储层微观孔隙结构——以三塘湖油田牛圈湖区头屯河组为例[J].天然气地球科学,2008,19(4):553-556.]
[20]Tian Wei,Zhu Weiyao,Zhu Huayin,et al.The micro-structure and seepage characteristics of condensate gas reservoir for tight sand stone[J].Natural Gas Geoscience,2014,25(7):1077-1084.[田巍,朱维耀,朱华银,等.致密砂岩凝析气藏微观结构及渗流特征[J].天然气地球科学,2014,25(7):1077-1084.]
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