Numerical Simulation Research of Fractured Horizontal Well Production Performance
Received date: 2014-08-14
Revised date: 2015-01-29
Online published: 2015-04-10
According to the seepage characteristics of fractured horizontal wells,a constant production mathematic model was established for the fractured horizontal wells in low permeability gas reservoirs.The model takes into account the stress sensitive effect and the influence of water saturation.Through the numerical simulation,the influence of the permeability,water saturation,fracture number,fracture semi-length,horizontal section length on the productivity of fractured horizontal gas wells is analyzed.The dynamic variation curves of gas production rate and recovery degree under different parameters are obtained,and the influence of different parameters on the dynamic change curve was analyzed.The results show that the smaller the permeability and water saturation,the greater the effects on recovery degree.Permeability is less than 0.1×10-3μm2.There is a significant reduction in the stable time and recovery degree,so reservoir permeability less than 0.1×10-3μm2 is the focus of the horizontal well parameter optimization.For the known fracture number,the lower the permeability,the shorter of the proper length of the horizontal well.For the known horizontal well length,the lower the permeability,the more reasonable the fracture number and the greater the reasonable fracture semi-length.For a specific gas reservoir,under the given condition of reservoir basic parameters,the fracture number,the fracture length and the horizontal section length are not the bigger the better.There should be an optimal matching.
Key words： Low Permeable; Horizontal well; Crevice; Numerical modeling; Dynamic production
SHAO Zhao-yuan，NING Ning，LIU Hua-xun，GAO Shu-sheng，ZHAO Fang . Numerical Simulation Research of Fractured Horizontal Well Production Performance[J]. Natural Gas Geoscience, 2015 , 26(4) : 737 -743 . DOI: 10.11764/j.issn.1672-1926.2015.04.0737
［1］Brown J E,Economides M J.An Analysis of Hydraulically Fractured[JP] Horizontal Wells［C］.SPE 24322,1992.
［2］Giger F M.Low-Permeability Reservoirs Development Using Horizontal Wells［C］.SPE 16406,1985.
［3］Chen Zhihai,Ma Xinfang,Lang Zhaoxin.Deliverability prediction of horizontal gas well[J].Natural Gas Industry,2006,26(2):98-99.［陈志海,马新仿,郎兆新.气藏水平井产能预测方法[J].天然气工业,2006,26(2):98-99.］
［4］Mu Lin,Wang Lili.Numerical simulation of fractured horizontal well in tight low-permeability gas reservoir[J].Oil Drilling ＆ Production Technology,2011,32(supplementⅠ):127-129.［穆林,王丽丽.致密低渗气藏压裂水平井数值模拟[J].石油钻采工艺,2011,32(增刊Ⅰ):127-129.］
［5］Zeng Fanhui,Guo Jianchun,Xu Yanbo,et al.Factors affecting production capacity of fractured horizontal well[J].Petroleum Exploration and Development,2007,34(4):474-477.［曾凡辉,郭建春,徐严波,等.压裂水平井产能影响因素[J].石油勘探与开发,2007,34(4):474-477.］
［6］Dong Jiaxin,Tong Min,Zhang Jin,et al.Optimization of hori-zontal well parameter based on orthogonal test method[J].Natural Gas Geoscience,2012,23(3):584-589.［董家辛,童敏,张金,等.基于正交试验方法的气藏水平井参数优选[J].天然气地球科学,2012,23(3):584-589.］
［7］Gao Haihong,Qu Zhanqing,Zhao Mei.Experimental study on the factors affecting the productivity of fractured horizontal well[J].Journal of Southwest Petroleum University:Science & Technology Edition,2008,30(4):73-76.［高海红,曲占庆,赵梅.压裂水平井产能影响因素的实验研究[J].西南石油大学学报:自然科学版,2008,30(4):73-76.］
［8］Zeng Fanhui,Guo Jianchun,He Songgen,et al.Optimization of fracture parameters of fractured horizontal wells in tight sandstone gas reservoirs[J].Natural Gas Industry,2012,32(11):54-57.［曾凡辉,郭建春,何颂根,等.致密砂岩气藏压裂水平井裂缝参数的优化[J].天然气工业,2012,33(11):54-57.］
［9］Zhang Yuguang.Optimization analysis of the fracture parameters of fractured horizontal well in gas reservoir[J].Science Technology and Engineering,2010,10(12):2861-2864.［张玉广.气藏压裂水平井裂缝参数优化分析[J].科学技术与工程,2010,10(12):2861-2864.］
［10］Sheng Ruyan,Liu Hua,Xiang Xiyong,et al.Fractured horizontal well of tight gas reservoir′s dynamic analysis[J].Oil and Gas Geology and Recovery,2003,10(1):40-42.［生如岩,刘华,项希勇,等.致密气藏中压裂水平井的动态分析[J].油气地质与采收率,2003,10(11):40-42.］
［11］Wang Junlei,Jia Ailin,He Dongbo,et al.Rate decline of multiple fractured horizontal well and influence factors on productivity in tight gas reservoir[J].Natural Gas Geoscience,2014,25(2):278-285.［王军磊,贾爱林,何东博,等.致密气藏分段压裂水平井产量递减规律及影响因素[J].天然气地球科学,2014,25(2):278-285.］
［12］Yuan Bin,Gu Yonghong,Li Hongying,et al.Factors influencing the productivity of fractured horizontal wells in the tight gas reservoir of eastern Sulige Gasfield and the optimization of them[J].Journal of Xi′an Shiyou University:Natural Science Edition,2013,28(2):46-48.［袁彬,古永红,李红英,等.苏里格东区致密气藏压裂水平井产能影响因素及其优化设计[J].西安石油大学学报:自然科学版,2013,28(2):46-48.］
［13］Li Qin,Chen Cheng,Xun Xiaoquan.A new method of predicting gas wells′productivity of fractured horizontal well of low-permeability tight gas reservoir[J].Natural Gas Geoscience,2013,24(3):633-638.［李琴,陈程,荀小全.低渗致密气藏压裂水平井产能预测新方法[J].天然气地球科学,2013,24(3):633-638.］
［14］Yang Zhaopeng,Gao Shusheng,Guo Lihui,et al.Effect of stresssensitivity on well productivity in tight gas reservoir[J].Drilling & Production Technology,2013,36(2):58-61.［杨朝蓬,高树生,郭立辉,等.致密砂岩气藏应力敏感性及其对产能的影响[J].钻采工艺,2013,36(2):58-61.］
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号