苏里格低渗致密气藏阈压效应

doi:10.7623/syxb201503009

石油学报 ›› 2015, Vol. 36 ›› Issue (3): 347-354.DOI: 10.7623/syxb201503009

苏里格低渗致密气藏阈压效应

杨朝蓬¹, 李星民¹, 刘尚奇¹, 高树生², 叶礼友², 刘剑¹

1. 中国石油勘探开发研究院北京 100083;
2. 中国石油勘探开发研究院廊坊分院河北廊坊 065007

收稿日期:2014-10-25 修回日期:2015-01-23 出版日期:2015-03-25 发布日期:2015-03-11
通讯作者: 杨朝蓬,男,1983年9月生,2006年获东北石油大学学士学位,2013年获中国科学院大学博士学位,现为中国石油勘探开发研究院油藏工程师,主要从事油气渗流机理与油气藏工程研究。Email:yangzhaopeng2006@126.com
作者简介:杨朝蓬,男,1983年9月生,2006年获东北石油大学学士学位,2013年获中国科学院大学博士学位,现为中国石油勘探开发研究院油藏工程师,主要从事油气渗流机理与油气藏工程研究。Email:yangzhaopeng2006@126.com
基金资助:
国家重大科技专项(2011ZX05013-002)资助

Threshold pressure effect of low permeability tight gas reservoirs in Sulige gas field

Yang Zhaopeng¹, Li Xingmin¹, Liu Shangqi¹, Gao Shusheng², Ye Liyou², Liu Jian¹

1. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
2. Langfang Branch, PetroChina Research Institute of Petroleum Exploration and Development, Hebei Langfang 065007, China

Received:2014-10-25 Revised:2015-01-23 Online:2015-03-25 Published:2015-03-11

摘要/Abstract

摘要：

低渗致密气藏孔吼细小,束缚水饱和度普遍较高,气-水关系复杂,存在阈压效应。采用苏里格低渗致密储层的岩样,开展了低渗致密气藏阈压效应的研究。实验采用气泡法与压差流量法相结合测试并研究了阈压梯度及其引起的气体非线性渗流特征。通过核磁共振和恒速压汞实验测试了赋存水的分布规律和岩样孔喉结构,分析了阈压效应产生的机理及其影响因素。实验结果表明可动水和孔喉特征是影响阈压效应的主要因素,可动水比例越高、孔喉越致密,阈压梯度越大,阈压效应越强。并得出了通过气藏的绝对渗透率和含水饱和度定量表征苏里格低渗致密气藏阈压梯度的公式,进一步建立了通过渗透率和含水饱和度预测存在阈压效应的气井产能数学模型。IPR曲线表明,阈压效应会降低气藏的储量动用程度,导致一定的产能损失,因此减少气藏含水饱和度是提高开发效果的有效途径。

关键词: 低渗致密气藏, 阈压, 含水饱和度, 渗透率, 产能模型

Abstract:

Threshold pressure effect exists in the low-permeability tight gas reservoirs with small pore throat, high irreducible water saturation and complicated gas-water relation. Rock samples of low-permeability tight gas reservoirs from Sulige gas field were used to study the threshold pressure effect of low-permeability tight gas reservoirs. The experiment was carried out in combination with gas bubble method and differential pressure flow method to test and investigate the threshold pressure gradient and the resulting gas non-linear percolation characteristics. The distribution law of occurring water and pore throat structure of rock samples were tested with the use of nuclear magnetic resonance and constant-rate mercury injection experiment, based on which the occurrence mechanism and influence factors of threshold pressure effect are analyzed in this study. The experimental results show that movable water and pore throat characteristics are primary controlling factors. The higher the percentage of movable water is, and the tighter the pore throat is, the greater the threshold pressure gradient will be, and the stronger the threshold pressure effect will be. Moreover, the absolute permeability and water saturation of gas reservoirs are used to characterize the threshold pressure gradient of low-permeability tight gas reservoirs in Sulige gas field, and the related function has been obtained. The mathematical model was further established to predict the gas well productivity under threshold pressure effect. IPR curves indicate that threshold pressure effect can decrease the producing degree of gas reservoirs, leading to a certain loss of productivity. Thus, development results can be effectively improved through the reduction of water saturation in gas reservoirs.

Key words: low permeability tight gas reservoirs, threshold pressure, water saturation, permeability, productivity model

中图分类号:

TE37

杨朝蓬, 李星民, 刘尚奇, 高树生, 叶礼友, 刘剑. 苏里格低渗致密气藏阈压效应[J]. 石油学报, 2015, 36(3): 347-354.

Yang Zhaopeng, Li Xingmin, Liu Shangqi, Gao Shusheng, Ye Liyou, Liu Jian. Threshold pressure effect of low permeability tight gas reservoirs in Sulige gas field[J]. Acta Petrolei Sinica, 2015, 36(3): 347-354.

参考文献

[1] 石玉江,时卓,张海涛,等.苏里格气田致密气层测井精细建模方法[J].西南石油大学学报:自然科学版,2012,34(5):71-77.
Shi Yujiang,Shi Zhuo,Zhang Haitao,et al.Fine logging interpretation method of tight gas reservoir in Sulige gas field[J].Journal of Southwest Petroleum University:Science & Technology Edition,2012,34(5):71-77.
[2] 邓灵,杨振军.苏里格气田低渗透砂岩储集层解水锁实验研究[J].辽宁化工,2011,40(3):307-311.
Deng Ling,Yang Zhenjun.Experimental study on water block removal of low permeability sand gas reservoir in Sulige[J].Liaoning Chemical Industry,2011,40(3):307-311.
[3] 陈霞,刘洪林,王红岩,等.沁水盆地含水煤层气藏的气体渗流特征[J].石油学报,2011,32(3):500-503.
Chen Xia,Liu Honglin,Wang Hongyan,et al.Gas-seepage characteristics of coalbed reservoirs with different water saturation in the Qinshui Basin[J]. Acta Petrolei Sinica,2011,32(3):500-503.
[4] 王晓冬,郝明强,韩永新.启动压力梯度的含义与应用[J].石油学报,2013,34(1):188-191.
Wang Xiaodong,Hao Mingqiang,Han Yongxin.Implication of the threshold pressure gradient and its application[J].Acta Petrolei Sinica,2013,34(1):188-191.
[5] 郭平,张茂林,黄全华,等.低渗透致密砂岩气藏开发机理研究[M].北京:石油工业出版社,2009.
Guo Ping,Zhang Maolin,Huang Quanhua,et al.Low permeability tight sandstone gas reservoir development mechanism[M].Beijing:Petroleum Industry Press,2009.
[6] 吴凡,孙黎娟,乔国安,等.气体渗流特征及启动压力规律的研究[J].天然气工业,2001,21(1):82-84.
Wu Fan,Sun Lijuan,Qiao Guoan,et al.A research on gas flow property and starting pressure phenomenon[J].Natural Gas Industry,2001,21(1):82-84.
[7] 章星,杨胜来,张洁,等.致密低渗气藏启动压力梯度实验研究[J].特种油气藏,2011,18(5):103-105.
Zhang Xing,Yang Shenglai,Zhang Jie,et al.Experimental study on threshold pressure gradient of tight and low permeability gas reservoirs[J]. Special Oil and Gas Reservoirs,2011,18(5):103-105.
[8] 王道成,李闽,乔国安,等.天然气启动压力梯度实验研究[J].钻采工艺,2007,30(5):53-55.
Wang Daocheng,Li Min,Qiao Guoan,et al.Experimental study of gas starting pressure gradient[J].Drilling & Production Technology,2007,30(5):53-55.
[9] 刘善华,廖伟,周辉.新场须家河组气藏气水两相渗流启动压力梯度实验研究[J].石油地质与工程,2011,25(6):115-117.
Liu Shanhua,Liao Wei,Zhou Hui.Experimental study of gas/water two-phase flow thresh-old pressure of Xinchang Xujiahe gas reservoir[J]. Petroleum Geology and Engineering,2011,25(6):115-117.
[10] 高树生,熊伟,钟兵,等.川中须家河组低渗砂岩气藏渗流规律及开发机理研究[M].北京:石油工业出版社,2011.
Gao Shusheng,Xiong Wei,Zhong Bing,et al.Study on percolation law and development mechanism of Xujiahe low permeability sandstone gas reservoirs in central Sichuan Basin[M].Beijing:Petroleum Industry Press,2011.
[11] 薛芸,石京平,贺承祖.低速非达西流动机理分析[J].石油勘探与开发,2001,28(5):102-104.
Xue Yun,Shi Jingping,He Chengzu.Analysis of low velocity non-Darcy flow mechanism [J].Petroleum Exploration and Development,2001,28(5):102-104.
[12] 陈志明,蔡雨桐,刘冰.低渗透油藏启动压力梯度的研究方法[J].石油化工应用,2012,31(7):7-10.
Chen Zhiming,Cai Yutong,Liu Bing.Research methods of studying starting pressure gradient for low permeability reservoir[J].Petrochemical Industry Application,2012,31(7):7-10.
[13] 王杨,杨胜来,吴彬,等.大庆特低渗砂岩单相水启动压力梯度实验研究[J].复杂油气藏,2010,3(1):62-65.
Wang Yang,Yang Shenglai,Wu Bin,et al.Experimental research of single phase water on threshold pressure gradient of ultra-low permeability sandstone cores of Daqing oil field[J].Complex Hydrocarbon Reservoirs,2010,3(1):62-65.
[14] 李爱芬,张少辉,刘敏,等.一种测定低渗油藏启动压力的新方法[J].中国石油大学学报:自然科学版,2008,32(1):68-71.
Li Aifen,Zhang Shaohui,Liu Min,et al.A new method of measuring starting pressure for low permeability reservoir[J].Journal of China University of Petroleum:Edition of Natural Science,2008,32(1):68-71.
[15] 杨正明,郭和坤,刘学伟,等.特低—超低渗透油气藏特色实验技术[M].北京:石油工业出版社,2012.
Yang Zhengming,Guo Hekun,Liu Xuewei,et al.Characteristic experimental technologies of extra-ultra low permeability oil & gas reservoirs[M].Beijing:Petroleum Industry Press,2012.
[16] 吕成远,王建,孙志刚.低渗透砂岩油藏渗流启动压力梯度实验研究[J].石油勘探与开发,2002,29(2):86-88.
Lü Chengyuan,Wang Jian,Sun Zhigang.An experimental study on starting pressure gradient of fluids flow in low permeability sandstone porous media[J].Petroleum Exploration and Development,2002,29(2):86-88.
[17] 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.
[18] 陶军,姚军,范子菲,等.一种确定低渗透油藏启动压力梯度的新方法[J].新疆石油地质,2008,29(5):626-628.
Tao Jun,Yao Jun,Fan Zifei,et al.A new method for determination of start-up pressure gradient in low permeability reservoir[J].Xinjiang Petroleum Geology,2008,29(5):626-628.
[19] 冯文光.非达西低速渗流的研究现状与展望[J].石油勘探与开发,1986,13(4):76-80.
Feng Wenguang.Progress of studies on the mechanism of non-Darcy low-velocity fluid flow [J].Petroleum Exploration and Development,1986,13(4):76-80.
[20] 闫庆来,何秋轩,尉立岗,等.低渗透油层中单相液体渗流特征的实验研究[J].西安石油学院学报,1990,5(2):1-5.
Yan Qinglai,He Qiuxuan,Wei Ligang,et al.A laboratory study on percolation characteristics of single phase flow in low-permeability reserviors[J].Journal of Xi’an Petroleum Institute,1990,5(2):1-5.
[21] 杨正明,苗盛,刘先贵,等.特低渗透油藏可动流体百分数参数及其应用[J].西安石油大学学报:自然科学版,2007,22(2):96-99.
Yang Zhengming,Miao Sheng,Liu Xiangui,et al.Percentage parameter of the movable fluid in ultra-low permeability reservoir and its application[J].Journal of Xi’an Shiyou University:Natural Science Edition,2007,22(2):96-99.
[22] 杨学云.基于启动压力梯度影响下的气井产能预测研究[D].青岛:中国石油大学,2008.
Yang Xueyun.Productivity prediction of gas well based on the affect of threshold pressure gradient[D].Qingdao:China University of Petroleum,2008.
[23] 杨小松,严谨,郑荣臣,等.致密低渗透气藏气井产能预测新方法[J].天然气工业,2009,29(6):77-79.
Yang Xiaosong,Yan Jin,Zheng Rongchen,et al.A new method to predict gas well productivity of tight (low permeability) gas reservoirs[J].Natural Gas Industry,2009,29(6):77-79.
[24] 张冬丽,王新海,宋岩.考虑启动压力梯度的煤层气羽状水平井开采数值模拟[J].石油学报,2006,27(4):89-92.
Zhang Dongli,Wang Xinhai,Song Yan.Numerical simulation of pinnate horizontal multilateral well for coal-bed gas development in consideration of strar-up pressure gradient[J].Acta Petrolei Sinica,2006,27(4):89-92.
[25] 王晓冬,侯晓春,郝明强,等.低渗透介质有启动压力梯度的不稳态压力分析[J].石油学报,2011,32(5):847-851.
Wang Xiaodong,Hou Xiaochun,Hao Mingqiang,et al.Pressure transient analysis in low-permeable media with threshold gradients [J].Acta Petrolei Sinica,2011,32(5):847-851.
[26] 孔祥言.高等渗流力学[M].合肥:中国科学技术大学出版社,1999.
Kong Xiangyan.Advanced mechanics of fluids in porous media[M].Hefei:Press of University of Science and Technology of China,1999.

苏里格低渗致密气藏阈压效应

Threshold pressure effect of low permeability tight gas reservoirs in Sulige gas field

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