Treatment Technology and Method of Low-to-Moderate Production Coalbed Methane Wells in Hancheng Mining Area

SHAO Xian-jie，DONG Xin-xiu，TANG Da-zhen，WU Ze，LI Shi-cai，SUN Yu-bo，XU Hao

doi:10.11764/j.issn.1672-1926.2014.03.435

Natural Gas Geoscience >

2014 , Vol. 25 >Issue 3: 435 - 443

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.03.435

Treatment Technology and Method of Low-to-Moderate Production Coalbed Methane Wells in Hancheng Mining Area

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1.Department of Petroleum Engineering,Yanshan University,Qinhuangdao 066004,China;
2.China University of Geosciences (Beijing),Beijing 100083,China

Received date: 2013-06-10

Revised date: 2013-07-18

Online published: 2014-03-10

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Abstract

Hancheng mining area has a great number of coal seams and abundant reserves.However,faults are widely developed,the single layer is thin,and the porosity and permeability are low.The drainage time is long,the production fluctuated seriously during the producing process.There is a high ratio of low-to-moderate production wells in Hancheng mining area.It is an urgent subject to improve single well production,which faces the current coalbed methane development in China.The influencing factors that affect low production wells are analyzed according to geological and engineering aspects.Firstly,the production layer is thin and the reserve controlled by single well is limited.Secondly,the physical property is poor and the production is low.Thirdly,the faults communicate with fracturing fractures,and water has channeling between adjacent layers.Fourthly,the cementing quality is poor or even has no well cementation in shallow layers,causing cement channeling outside casing.Fifthly,the fracturing measure does not meet the designed scale,and the effective seepage radius is small and the stable production period is short.Sixthly,the draining and producing system is unreasonable,leading to stress sensitivity of permeability,and the production declines sharply.According to the research results,corresponding adjustment plan and measures are put forward,including optimizing perforated layers to increase production layer thickness;using multiple fracturing technology in the appropriate production stage to improve seepage area;plugging workover for channeling wells;drilling sidetracking horizontal wells after plugging old wells for well channeling along faults;establishing a reasonable draining and producing system to prolong the stable production period through permeability project intervention.The results have achieved good results in practical application and provide reference for the development of the same type of mining area.

Key words： Hancheng mining area; Coalbed methane; Treatment of low-to-moderate production well; Stress sensitivity; Fracturing measures

Cite this article

SHAO Xian-jie，DONG Xin-xiu，TANG Da-zhen，WU Ze，LI Shi-cai，SUN Yu-bo，XU Hao . Treatment Technology and Method of Low-to-Moderate Production Coalbed Methane Wells in Hancheng Mining Area[J]. Natural Gas Geoscience, 2014 , 25(3) : 435 -443 . DOI: 10.11764/j.issn.1672-1926.2014.03.435

References

［1］]Liu Honglin,Li Guizhong,Wang Guangjun,et al.Geological Characteristics and Development Prospect of Coalbed Methane in Qinshui Basin［M］.Beijing:Petroleum Industry Press,2009:1-2.［刘洪林,李贵中,王广俊,等.沁水盆地煤层气地质特征与开发前景［M］.北京：石油工业出版社,2009：1-2.］

［2］Zhang Qun,Feng Sanli,Yang Xilu.Basic reservoir characteristics and development strategy of coalbed methane resource in China［J］.Journal of China Coal Society,2001,26(3):34-39.［张群,冯三利,杨锡禄.试论我国煤层气的基本储层特点及开发策略［J］.煤炭学报,2001,26(3):34-39.］

［3］Wang Hongyan,Li Jingming,Liu Honglin,et al.Progress of basic theory and accumulation law and development technology of coalbed methane［J］.Petroleum Exploration and Development,2004,31(6):14-16.［王红岩,李景明,刘洪林,等.煤层气基础理论、聚集规律及开采技术方法进展［J］.石油勘探与开发,2004,31(6):14-16.］

［4］Ye Jianping,Shi Baosheng,Zhang Chuncai.Coal reservoir permeability and its controlled factors in China［J］.Journal of China Coal Society,1999,24(2):118-122.［叶建平,史保生,张春才.中国煤储层渗透性及其主要影响因素［J］.煤炭学报,1999,24(2):118-122.］

［5］Lv Yumin,Tang Dazhen,Li Zhiping,et al.Fitting and predicting models for coalbed methane wells dynamic productivity［J］.Journal of China Coal Society,2011,36(9):1481-1485.［吕玉民,汤达祯,李治平,等.煤层气井动态产能拟合与预测模型［J］.煤炭学报,2011,36（9）:1481-1485.］

［6］Enoh M E.A Tool to Predict the Production Performance of Vertical Wells in a Coalbed Ethane Reservoir［D］.West Virginia:West Virginia University,2007.

［7］Zhang Peihe.Study on CBM well capacity grading scheme［J］.China Coalbed Methane,2007,4(1):28-30.［张培河.煤层气井产能分级方案研究［J］.中国煤层气,2007,4(1):28-30.］

［8］Yao Yanbin,Liu Dameng,Huang Wenhui,et al.Research on the pore-fractures systen properties of coalbed methane reservoirs and recovery in Huainan and Huaibei Coal-fields［J］.Journal of China Coal Society,2006,31(2):163-166.［姚艳斌,刘大锰,黄文辉,等.两淮煤田煤储层孔—裂隙系统与煤层气产出性能研究［J］.煤炭学报,2006,31(2):163-166.］

［9］Shao Xianjie,Wang Caifeng,Tang Dazhen,et al.Productivity mode and control factors of coalbed methane wells［J］.Journal of China Coal Society,2013,38(2):271-276.［邵先杰,王彩凤,汤达祯,等.煤层气井产能模式及控制因素［J］.煤炭学报,2013,38(2):271-276.］

［10］Chen Zhenhong,Wang Yibin,Yang Jiaosheng,et al.Influencing factors on coal-bed methane production of single well:A case of Fanzhuang block in the south part of Qinshui Basin［J］.Acta Petrolei Sinica,2009,30(3):409-416.［陈振宏,王一兵,杨焦生,等.影响煤层气井产量的关键因素分析——以沁水盆地南部范庄区块为例［J］.石油学报,2009,30(3):409-416.］

［11］Wang Bo,Jiang Bo,Wang Hongyan,et al.The coalbed methane reservoir physical simulation study of coal seam physical variational rule［J］.Natural Gas Geoscience,2005,16(5):684-686.［王勃,姜波,王红岩,等.煤层气储层渗透率变化规律的物理模拟实验研究［J］.天然气地球科学,2005,16(5):684-686.］

［12］Furati K M.Effects of relative permeability history dependence on two-phase flow in porous media［J］.Transport in Porous Media,2004,28:181-203．

［13］Li Qiangui,Kang Yili,Luo Pingya.Analyses influencing factors on coal seam methane desorption-diffusion-seepage process［J］.Coal Geology & Exploration,2003,31(4):26-29.［李前贵,康毅力,罗平亚.煤层甲烷解吸—扩散—渗流过程的影响因素分析［J］.煤田地质与勘探,2003,31(4):26-29.］

［14］Zhao Qun,Wang Hongyan,Li Jingming,et al.Study on mechanism of harm to CBM well capability in low permeability seam with Quick Drainage Method［J］.Journal of Shandong University of Science and Technology,2008,27(3):27-31.［赵群,王洪岩,李景明,等.快速排采对低渗透煤层气井产能伤害的机理研究［J］.山东科技大学学报,2008,27(3):27-31.］［15］Duan Pinjia,Wang Zhiyin,Zhai Yuyang,et al.Research on reasonable depressurization rate in initial stage of exploitation to coalbed methane［J］.Journal of China Coal Society,2011,36(10):1689-1692.［段品佳,王芝银,翟雨阳,等.煤层气排采初期阶段合理降压速率的研究［J］.煤炭学报,2011,36(10):1689-1692.］

［16］Ni Xiaoming,Su Xianbo,Li Guangsheng.Feasibility of multi-layer drinaga for No.3 and No.15 coal seams in the Fanzhuang area［J］.Natural Gas Geoscience,2010,21(1):144-149.［倪小明,苏现波,李广生.樊庄地区3^#、15^#煤层合层排采的可行性［J］.天然气地球科学,2010,21(1):144-149.］

［17］Jiang Houshun,Bai Yanhua,Ran Jianli.Production of horizontional well deliverability and optimization of perforation parameters［J］.Natural Gas Geoscience,2007,18(6):891-893.［江厚顺,白燕华,冉建立.水平井产能预测及射孔参数优选系统研究［J］.天然气地球科学,2007,18(6):891-893.］

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