考虑应力敏感性的低渗气藏压裂气井产能模型

候勇; 汤睿

doi:10.3981/j.issn.1000-7857.2016.2.024

科技导报 >

2016 , Vol. 34 >Issue 2: 152 - 155

DOI: https://doi.org/10.3981/j.issn.1000-7857.2016.2.024

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考虑应力敏感性的低渗气藏压裂气井产能模型

候勇 ,
汤睿

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1. 长江大学地球科学学院, 武汉 430100;
2. 非常规油气湖北省协同创新中心, 武汉 430100;
3. 中海油(中国)有限公司上海分公司, 上海 200030

候勇,实验师,研究方向为计算机应用,电子信箱:877752174@qq.com

收稿日期: 2015-09-17

修回日期: 2015-10-11

网络出版日期: 2016-02-04

基金资助

国家油气重大专项(2011ZX05007-001)

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Productivity model of fractured gas well considering stress sensitivity in low permeability gas reservoirs

HOU Yong ,
TANG Rui

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1. School of Geosciences, Yangtze University, Wuhan 430100, China;
2. Hubei Cooperarive lnnovation Center of Unconventional Oil and Gas, Wuhan 430100, China;
3. Shanghai Branch of CNOOC Ltd., Shanghai 200030, China

Received date: 2015-09-17

Revised date: 2015-10-11

Online published: 2016-02-04

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摘要

渗透气藏孔喉致密存在应力敏感性,而且气井投产前普遍进行压裂,因此建立考虑应力敏感性的气井产能模型具有一定的意义。选用塔里木低渗透气藏的岩心开展应力敏感性实验,实验表明低渗透气藏存在较强的应力敏感性,渗透率越低,应力敏感性系数越大,应力敏感性越强。将压裂气井的渗流区域划分为裂缝两端的径向流和裂缝两边的线性流推导了考虑应力敏感性的压裂气井产能模型。应力敏感对压裂气井产能有较大影响,应力敏感性越强的气藏,产能损失率越高,随着井底流压的降低,应力敏感性引起的产能损失增加。压裂是改善受应力敏感性影响的低渗气藏气井产能的有效途径。

关键词： 低渗透气藏; 应力敏感性; 压裂; 产能模型; 产能损失率

本文引用格式

候勇 , 汤睿 . 考虑应力敏感性的低渗气藏压裂气井产能模型[J]. 科技导报, 2016 , 34(2) : 152 -155 . DOI: 10.3981/j.issn.1000-7857.2016.2.024

Abstract

The low permeability gas reservoir exists stress sensitivity due to the tight pore throat, and the gas well is generally fractured before starting production. It is essential to establish the productivity model of gas well considering stress sensitivity in low permeability gas reservoirs. The cores from Tarim low permeability gas field were adopted for stress sensitivity experiments. The experiment results show that the low permeability cores present strong stress sensitivity. With the decline of permeability, the stress sensitivity coefficient rises, and the stress sensitivity becomes strongly. The seepage area of fractured gas well is divided into two parts: One part is the radial flow around the two ends of fractures; The other part is the linear flow along fractures. Then the gas well productivity model considering stress sensitivity is deduced. The stress sensitivity has a significant impact on the productivity of fractured gas well. The stronger the stress sensitivity of gas reservoirs is, the higher the productivity loss rate is. With the decline of flowing bottom hole pressure, the productivity loss increases due to the stress sensitivity. Fracturing is an effective method for improving the productivity of gas well affected by stress sensitivity in low permeability reservoirs.

Key words： low permeability gas reservoir; stress sensitivity; well fracturing; productivity model; productivity loss rate

参考文献

[1] 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): 229-235. 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): 229-235.
[2] 伊怀建, 朱维耀, 张明江, 等. 低渗透致密储层气体低速非达西渗流地层压力分布及产能分析[J]. 复杂油气藏, 2012, 19(1): 70-73. Yi Huaijian, Zhu Weiyao, Zhang Mingjiang, et al. Analysis of formation pressure distribution and productivity of low permeability tight gas reser-voirs with low-velocity non-Darcy flow[J]. Special Oil and Gas Reser-voirs, 2012, 19(1): 70-73.
[3] 叶礼友, 高树生, 熊伟, 等. 储层压力条件下低渗砂岩气藏气体渗流特征[J]. 复杂油气藏, 2011, 4(1): 59-63. Ye Liyou, GaoShusheng, Xiong Wei, et al. Percolation characteristics of gas in sandstone gas reservoir with low permeability under reservoir pres-sure[J].Complex Hydrocarbon Reservoirs, 2011,4(1):59-63.
[4] 茹婷, 刘易非, 范耀, 等. 低渗砂岩气藏开发中的压敏效应问题[J]. 断块油气田, 2011, 18(1): 94-96. Ru Ting, Liu Yifei, Fan Yao, et al. Pressure-sensitive effect in development of low permeability sandstone gas reservoir[J]. Fault-block Oil & Gas Field, 2011, 18(1): 94-96.
[5] 杨波, 黄万书, 朱洪涛, 等. 压敏效应对低渗透砂岩气藏产能的影响[J]. 天然气技术, 2009, 3(5): 18-21. Yang Bo, Huang Wanshu, Zhu Hongtao, et al. Influence of pressure-sen-sitive effect on deliverability in low-permeability sandstone gas reservoir [J]. Natural Gas Technology, 2009, 3(5): 18-21.
[6] 熊健, 黄亮, 崔玲. 非线性流下井筒压降影响的水平井产能分析[J]. 科技导报, 2012, 30(35): 33-38. Xiong Jian, Huang Liang, Cui Ling. Effect of wellbore pressure drop on the horizontal well productivity with non-linear seepage[J]. Science & Technology Review, 2012, 30(35): 33-38.
[7] 肖勇, 郭建春. 低渗透非均质油藏油井压裂裂缝参数优化研究[J]. 科学技术与工程, 2012, 12(33): 9019-9022. Xiao Yong, Guo Jianchun. Optimization of fracturing parameters for low permeability and heterogeneous reservoir oil well[J]. Science Technology and Engineering, 2012, 12(33): 9019-9022.
[8] 才博, 丁云宏, 卢拥军, 等. 提高改造体积的新裂缝转向压裂技术及其应用[J]. 油气地质与采收率, 2012, 19(5): 108-110. Cai Bo, Ding Yunhong, Lu Yongjun, et al. Study and application of new in-fissure fracturing technique for improving stimulated reservoir volume [J]. Petroleum Geology and Recovery Efficiency, 2012, 19(5): 108-110.
[9] 张学文, 方宏长, 裘怿楠, 等. 低渗透率油藏压裂水平井产能影响因素 [J]. 石油学报, 1999, 20(4): 51-55. Zhang Xuewen, Fang Hongchang, Qiu, et al. A study on factors affecting the performance of hydraulically fractured horizontal well in low permea-bility reservoirs[J]. ActaPetroleiSinica, 1999,20(4):51-55.
[10] 宋传真, 郑荣臣. 致密低渗气藏储层应力敏感性及其对单井产能的影响[J]. 大庆石油地质与开发, 2006, 25(6): 47-49. Song Chuanzhen, ZhengRongchen. Stress sensitivity of low permeability tight gas reservoir and its effect on single well productivity[J]. Petroleum Geology and Oilfield Development in Daqing, 2006, 25(6): 47-49.
[11] 郑维师, 刘易非, 何秋轩. 压敏效应对低渗透砂岩气藏产能的影响[J]. 新疆石油地质, 2006, 26(2): 191-193. ZhengWeishi, Liu Yifei, He Qiuxuan. Effect of stress sensitivity on pro-ductivity of low-permeability sandstone gas pool[J]. Xinjiang Petroleum Geology, 2006, 26(2): 191-193.
[12] 蒋艳芳, 张烈辉, 刘启国, 等. 应力敏感影响下低渗透气藏水平井产能分析[J]. 天然气工业, 2011, 31(10): 54-56. Jiang Yanfang, Zhang Liehui, Liu Qiguo, et al. Productivity analysis of horizontal wells in low-permeability gas reservoirs considering stress sensitivity[J]. Natural Gas Industry, 2011, 31(10): 54-56.
[13] 廉培庆, 同登科, 程林松, 等. 垂直压裂水平井非稳态条件下的产能分析[J]. 中国石油大学学报: 自然科学版, 2009, 33(4): 98-102. LianPeiqing, Tong Dengke, Cheng Linsong, et al. Analysis of productivi-ty in unsteady state of vertical fractured horizontal well[J]. Journal of Chi-na University of Petroleum, 2009, 33(4): 98-102.
[14] 岳建伟, 段永刚, 陈伟, 等. 含多条垂直裂缝的压裂气井产能研究[J]. 大庆石油地质与开发, 2004, 23(3): 46-48. Yue Jianwei, Duan Yonggang, Chen Wei, et al. Study on productivity performances of horizontal fractured gas well with many vertical fractures [J].Petroleum Geology & Oilfield Development in Daqing, 2004, 23(3): 46-48.
[15] 熊健, 王小军, 吕雷. 低渗油藏不对称垂直裂缝井产能模型[J]. 科技导报, 2013, 31(22): 40-43. XiongJian, Wang Xiaojun, Lv Lei. Productivity model for asymmetrical vertical fracture well in low-permeability oil reservoirs[J]. Science & Technology Review, 2013, 31(22): 40-43.
[16] 张晓亮, 李娣, 孙君书, 等. 低渗透油藏压裂井产能分析[J]. 科技导报, 2011, 29(19): 58-61. Zhang Xiaoliang, Li Di, Sun Junshu, et al. Fractured well productivity of low permeability reservoir[J]. Science & Technology Review, 2011, 29 (19): 58-61.
[17] 田冷, 常铁龙, 郑荣臣, 等. 低渗油藏垂直裂缝油井产能计算新模型 [J]. 科技导报, 2012, 30(28-29): 33-37. TianLeng, Chang Tielong, ZhengRongchen, et al. A new production cal-culation model for vertical fractured well in the low permeable reservoir [J]. Science & Technology Review, 2012, 30(28-29): 33-37.
[18] 于忠良, 熊伟, 高树生, 等. 致密储层应力敏感性及其对油田开发的影响[J]. 石油学报, 2007, 28(4): 95-98. Yu Zhongliang, Xiong Wei, Gao Shusheng, et al. Stress sensitivity of tight reservoir and its influence on oilfield development[J]. Acta Petrolei Sinica, 2007, 28(4): 95-98.
[19] 王新海, 宋岩, 王玮, 等. 塔里木油田砂岩储层压力敏感系数变化规律研究[J]. 钻采工艺, 2008, 31(1): 66-67. Wang Xinhai, Songyan, Wangwei, et al. Variation law of coeeficient of sensitivity to pressure in sandstone reservoir in tarmoilfield[J]. Drilling & Production Technology, 2008, 31(1): 66-67.
[20] 赵明跃, 王新海, 雷霆, 等. 储层参数压力敏感性研究[J]. 油气井测试, 2001, 10(4): 3-4. Zhao Mingyue, Wang Xinhai, Lei Ting, et al. Study on sensitivity to pres-sure on reservoir factors[J]. Well Testing, 2001, 10(4): 3-4.

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