Special Oil & Gas Reservoirs >

2021 , Vol. 28 >Issue 1: 142 - 147

DOI: https://doi.org/10.3969/j.issn.1006-6535.2021.01.021

Reservoir Engineering

Research and Application of Denoising and Processing Technology for Oscillation Pressure Data when Stopping Pump during Tight Gas Reservoir Fracturing

  • Li Yueli ,
  • Xu Tonghao ,
  • Gong Yufeng
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  • 1. Sinopec North China Oil & Gas Company, Zhengzhou, Henan 450006, China;
    2. Cheng du University of techrwlogy,Sichuan,Chengdu,610059

Received date: 2020-04-17

  Revised date: 2020-11-03

  Online published: 2021-04-27

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Abstract

In the fracturing process of tight gas reservoirs, due to the high fracturing displacement, water hammer is prone to occur when stopping pump during fracturing , which causes obvious low-frequency oscillations in the surface pressure data, leading to problems such as poor quality of double logarithmic curve for injection pressure drop, difficulties in applying analysis methods in the field, and etc. Due to the pressure dropping data shows a typical characteristic of low-pass filtering signal when stopping pump, the pump-stopping data can be denoised and processed with three kinds of methods, namely Savitzky-Golay filtering, fast Fourier transform and wavelet transform. Apply this method to some well in Daniudi. The on-site analysis results showed that the data quality improved significantly after denoising and processing with wavelet transform, and the fracture parameters could be obtained accurately with processed data. The research method has a very important guiding significance for improving the speed and accuracy of the effect evaluation after fracturing.

Key words： fracturing effect evaluation; pump-stopping pressure dropping data; water hammer denoising; injection pressure drop; unconventional gas field

Cite this article

Li Yueli , Xu Tonghao , Gong Yufeng . Research and Application of Denoising and Processing Technology for Oscillation Pressure Data when Stopping Pump during Tight Gas Reservoir Fracturing[J]. Special Oil & Gas Reservoirs, 2021 , 28(1) : 142 -147 . DOI: 10.3969/j.issn.1006-6535.2021.01.021

References

[1] 刘艳艳,刘大伟,刘永良,等.水力压裂技术研究现状及发展趋势[J].钻井液与完井液,2011,28(3):75-78.
LIU Yanyan,LIU Dawei,LIU Yongliang,et al.Study progresses of hydraulic fracturing technology[J].Drilling Fluid & Completion Fluid,2011,28(3):75-78.
[2] 叶登胜,尹丛彬,蒋海,等.四川盆地南部页岩气藏大型水力压裂作业先导性试验[J].天然气工业,2011,31(4):48-50.
YE Dengsheng,YIN Congbin,JIANG Hai,et al.A pilot test of large-scale hydraulic fracturing in shale gas reservoir of the southern Sichuan Basin[J].Natural Gas Industry,2011,31(4):48-50.
[3] 温杰雄.基于水锤和信号降噪的压裂数据分析方法研究[D].北京:中国科学技术大学,2017.
WEN Jiexiong.A study of fracturing data analysis method based on water hammer theory and signal noise reduction[D].Beijing:University of Science and Technology of China,2017.
[4] 朱红运,王长龙,王建斌,等.基于奇异值分解和Savitzky-Golay滤波器的信号降噪方法[J].计算机应用,2015,35(10):3004-3007,3012.
ZHU Hongyun,WANG Changlong,WANG Jianbin,et al.Signal denoising method based on singular value decomposition and Savitzky-Golay filter[J].Journal of Computer Applications,2015,35(10):3004-3007,3012.
[5] 李亢, 杨绍清. 基于Savitzky-Golay算法的图像平滑去噪[J].数据采集与处理, 2010,26(37):72-74.
LI Kang, YANG Shaoqing.Image smooth denoising based on Savitzky-Golay Algorithm[J].Journal of Data Acquisition & Processing, 2010,26(37):72-74.
[6] 郑宇凡. 浅谈FFT(快速傅立叶变换)算法及其应用[J]. 科技展望, 2015, 25(29):144.
ZHENG Yufan. On FFT algorithm and its application [J]. Technology Outlook, 2015, 25(29):144.
[7] 邹长春,杨欣德,潘令枝,等.一种基于小波变换的测井曲线去噪新方法[J].物探与化探, 1999 ,22(6): 462-466.
ZOU Changchun, YANG Xinde, PAN Lingzhi, et al. A new technique for denoising log curve on the basis of wavelet transform [J].Geophysical and Geochemical Exploration, 1999 ,22(6): 462-466.
[8] 田胜利, 徐东强, 葛修润. 大坝水平位移监测数据的小波变换去噪处理[J]. 水电与抽水蓄能, 2004,28(1):49-53.
TIAN Shengli, XU Dongqiang, GE Xiurun. Wavelet transform analysis and denoising of monitoring data of horizontal dam displacement[J].Hydropower automation and dam monitoring, 2004,28(1):49-53.
[9] 雷林平.基于Savitzky-Golay算法的曲线平滑去噪[J].电脑与信息技术,2014,22(5):30-31.
LEI Linping.Curve smoothing denoising based on Savitzky-Golay algorithm[J].Computer and Information Technology,2014,22(5):30-31.
[10] 王宝华.基于Savitzky-Golay算法的录井气测曲线滤波技术[J].西部探矿工程,2017,29(6):30-31.
WANG Baohua.The filtering technique of gas logging curve based on Savitzky-Golay algorithm[J].West-China Exploration Engineering,2017,29(6):30-31.
[11] 陈桂秀.用程序求解最小二乘拟合多项式的系数[J].青海师范大学学报(自然科学版),2010,26(3):14-17.
CHEN Guixiu.Solve the least square curve fitting polynomial coefficient with program[J].Journal of Qinghai Normal University(Natural Science Edition),2010,26(3):14-17.
[12] 晁晓洁.基于提升小波的故障诊断方法研究[D].沈阳:沈阳理工大学,2013.
CHAO Xiaojie.The research of fault diagnosis method based on lifting wavelet[D].Shengyang:Shenyang Ligong University,2013.
[13] 师栋锋, 叶伟, 贾鑫. 匹配傅里叶变换及其应用[J]. 装备学院学报, 2005,16(3):90-93.
SHI Dongfeng, YE Wei, JIA Xin.Match Fourier Transform and its applications[J].Journal of Academy of Equipment, 2005,16(3):90-93.
[14] 高倩,陈晓英,孙丽颖.基于稀疏表示的TQWT在低频振荡信号去噪中应用[J].电力系统保护与控制,2016,44(13):55-60.
GAO Qian,CHEN Xiaoying,SUN Liying.Low frequency oscillating signals denoising based on TQWT via sparse representation[J].Power System Protection and Control,2016,44(13):55-60.
[15] 衡彤.小波分析及其应用研究[D].成都:四川大学,2003.
HENG Tong.Wavelet analysis and its application[D].Chengdu:Sichuan University,2003.
[16] 金瑞佳,滕斌,吕林.应用两次展开法求解系泊柱体慢漂运动方程[J].海洋工程,2016,34(5):11-19.
JIN Ruijia,TENG Bin,LYU Lin.Large drift motion of mooring cylinder by applying twice expansion method[J].The Ocean Engineering,2016,34(5):11-19.
[17] 孙雷, 周芳芳, 夏静,等.基于遗传算法建立的凝析气藏露点压力改进模型[J].油气藏评价与开发, 2018, 8(3): 12-17.
SUN Lei, ZHOU Fangfang, XIA Jing,et al.An improved dew point pressure model for condensate gas based on genetic algorithm[J].Reservoir Evaluation and Development,2018,8(3): 12-17.
[18] 熊钰, 叶海峰, 蔡明金,等.大尺度串联双缝洞碳酸盐岩油藏的压力响应分析[J].油气藏评价与开发[J], 2018, 8(2): 22-29.
XIONG Yu, YE Haifeng, CAI Mingjin,et al.Pressure response analysis of large scale series double fracture-cavity carbonate reservoir[J].Reservoir Evaluation and Development,2018, 8(2): 22-29.
[19] 殷代印,贾江芬,康红庆. 低渗透油藏微乳液驱启动压力梯度研究[J]. 石油化工高等学校学报, 2018, 38(5): 38-44.
YIN Daiyin,JIA Jiangfen,KANG Hongqing. Start-up pressure gradient research of microemulsion applied on low permeability reservoir[J]. Journal of Petrochemical Universities, 2018, 38(5): 38-44.
[20] 王爽.葡萄花油田压力系统评价方法研究——以葡北地区为例[J].石油化工高等学校学报,2018,31(4):94-100.
WANG Shuang. Evaluation method of pressure system in putaohua oilfield:a case study in the north of Pubei Area[J]. Journal of Petrochemical Universities, 2018, 31(4): 94-100.
[21] 曾杨,康晓东,唐恩高,等. 存在有限导流断层的复合油藏试井模型及井底压力动态分析[J]. 东北石油大学学报,2018,42(2):103-108.
ZENG Yang,KANG Xiaodong,TANG Engao,et al. Well testing model and pressure dynamics for wells located near a finite-conductivity fault in composite reservoirs[J].Journal of Northeast Petroleum University,2018,42(2):103-108.
[22] 姜瑞忠,黄磊,崔永正,等. 考虑应力敏感效应的裂缝性复合油藏水平井压力动态分析[J]. 东北石油大学学报,2018,42(3):84-91.
JIANG Ruizhong,HUANG Lei,CUI Yongzheng,et al. Transient pressure analysis of a horizontal well in fractured composite reservoirs with stress sensitivity effect[J].Journal of Northeast Petroleum University,2018,42(3):84-91.
[23] 陈建华, 楚鹏, 汪来潮,等.海上高温高压气井关井井底恢复压力计算与应用[J].油气藏评价与开发, 2018, 8(2): 41-46.
CHEN Jianhua, CHU Peng, WANG Laichao,et al.Calculation and application of bottom hole pressure buildup during shut-in period in high temperature and high pressure offshore gas well[J].Reservoir Evaluation and Development,2018, 8(2): 41-46.
[24] 胡国强,胡书勇,李勇凯,等.低渗油藏注水开发五点井网有效驱替压力系统研究[J].油气藏评价与开发,2017,7(3):20-22.
Hu Guoqiang, HU Shuyong, LI Yongkai, et al. Effective displacement pressure of five-spot pattern by waterflood development in low permeability reservoir[J]. Reservoir Evaluation and Development, 2017, 7(3): 20-22.
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