套管钻井技术在煤矿采空区钻井中的应用
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摘要
煤矿采空区蕴藏着大量煤层气资源,但受采空区地层变化影响和钻井技术制约,常规钻井过程中极易发生井漏、卡钻、下套管遇阻等施工难题,造成采空区煤层气开发难度大。通过分析采空区顶板岩层分布特征和套管钻井技术背景,论述了该技术在煤矿采空区地层条件下的适用性。通过研制高强度套管、可钻式钻头及开发堵漏钻井液,可以将套管钻井技术转化应用于采空区地层钻井,为采空区煤层气开发提供了一种新的技术途径。
A large number of coal bed methane resources are contained in the goaf of coal mine,but it always occur some construction problem such as lost circulation,sticking and casing obstruction in the conventional drilling process which affected by goaf formation changes and drilling technology. It increase the difficulty of development of coal bed methane.By analyzing the distribution characteristics of roof strata and the background of casing drilling technology,discusses the applicability of this technology under the formation conditions of coal mine goaf. The transformation of casing drilling technique can be applied to the formation drilling in goaf through the development of high strength casing, drillable bit and the development of plugging drilling fluid. It provides a new technical way for the development of coalbed methane in goaf.
A large number of coal bed methane resources are contained in the goaf of coal mine,but it always occur some construction problem such as lost circulation,sticking and casing obstruction in the conventional drilling process which affected by goaf formation changes and drilling technology. It increase the difficulty of development of coal bed methane.By analyzing the distribution characteristics of roof strata and the background of casing drilling technology,discusses the applicability of this technology under the formation conditions of coal mine goaf. The transformation of casing drilling technique can be applied to the formation drilling in goaf through the development of high strength casing, drillable bit and the development of plugging drilling fluid. It provides a new technical way for the development of coalbed methane in goaf.
引文
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[11]张继峰.吉林油田套管钻井技术研究与应用[D].大庆:大庆石油学院,2008.
[2]申宝宏,刘见中,雷毅.我国煤矿区煤层气开发利用技术现状及展望[J].煤炭科学技术,2015,43(2):1-4.
[3]曹东风.大口径瓦斯钻孔穿越煤矿采空区钻井工艺[J].中国煤炭地质,2015,27(1):55-56+76.
[4]张军,王建鹏.采动覆岩“三带”高度相似模拟及实证研究[J].采矿与安全工程学报, 2014,31(2):249-254.
[5]王福厚.高位钻孔抽放瓦斯冒落带及裂隙带高度确定方法[J].煤炭技术, 2008(8):75-76.
[6]李焕,吕自伟,赵亮,等.高位钻孔瓦斯抽放冒落带与裂隙带高度的测定方法[J].现代矿业,2011,27(1):49-51.
[7]李俊峰.晋城矿区煤层气井完井工艺适应性分析[J].山西科技,2014,29(3):57-59+61.
[8]房超,陈贵峰.中国煤层气开发模式分析及开发技术研究[J].中国煤炭, 2011,37(3):72-75.
[9]陈军海,金衍,陈勉,等.套管钻井技术进展与应用前景分析[J].石油天然气学报, 2007,29(3):444-446+521.
[10]张凤民.套管钻井关键技术研究[D].大庆:大庆石油学院,2010.
[11]张继峰.吉林油田套管钻井技术研究与应用[D].大庆:大庆石油学院,2008.