郑浩然;

• 1:中国石油大学(北京)石油工程学院

摘要(Abstract)：

为了研究煤岩压裂后裂缝导流能力的变化特征,进行煤层气井压裂裂缝导流能力实验,分别考虑裂缝闭合压力、时间、铺砂浓度、煤岩天然裂缝及煤岩性质对煤岩压裂裂缝导流能力的影响.结果表明:裂缝闭合压力是影响煤岩裂缝导流能力的重要因素;在一定闭合压力下,裂缝导流能力随着时间的推移而呈现下降的趋势;高铺砂浓度下的导流能力明显高于低铺砂浓度下的;煤岩中天然裂缝对导流能力的影响不容忽视;在较高闭合压力作用下,支撑剂的嵌入和煤粉的产生对质软的煤岩裂缝导流能力伤害更为严重.煤岩裂缝导流能力表现出与砂岩裂缝不同的一些特征,在煤层气开发中需要考虑煤岩裂缝的特性,从而获得较高导流能力的煤层气井压裂裂缝.

关键词(KeyWords)：煤层气井;压裂;支撑剂;导流能力;闭合压力;铺砂浓度

Abstract:

Keywords:

基金项目(Foundation):

作者(Author):郑浩然;

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参考文献(References)：

• [1]刘振宇,刘洋,贺丽艳,等.人工压裂水平井研究综述[J].大庆石油学院学报,2002,26(4):96-99.Liu Zhenyu,Liu Yang,He Liyan,et al.Research on horizontal well fracturing[J].Journal of Daqing Petroleum Institute,2002,26(4):96-99.

• [2]Penny G S.An evaluation of the effects of environmental conditions and fracturing fluids upon long term conductivity of proppants[C].SPE 16900,1987:220-236.

• [3]Cobb S L,Farrell J J.Evaluation of long term proppant stability[C].SPE 14133,1986:483-492.

• [4]Parker M A,McDaniel B W.Fracturing treatment design improved by conductivity measurements under in situ conditions[C].SPE16901,1987:245-255.

• [5]温庆志,张士诚,王秀宇,等.支撑裂缝长期导流能力数值计算[J].石油钻采工艺,2005(4):68-70.Wen Qingzhi,Zhang Shicheng,Wang Xiuyu,et al.Numerical calculation of long-term conductivity of propping fractures[J].OilDrilling&Production Technology,2005(4):68-70.

• [6]卢聪,郭建春,王文耀,等.支撑剂嵌入及对裂缝导流能力损害的实验[J].天然气工业,2008(2):99-101.Lu Cong,Guo Jianchun,Wang Wenyao,et al.Experiment research on proppant embedment and its damage to fracture conductivity[J].Natural Gas Industry,2008(2):99-101.

• [7]温庆志,张士诚,王雷,等.支撑剂嵌入对裂缝长期导流能力的影响研究[J].天然气工业,2005(5):65-68.Wen Qing zhi,Zhang Shicheng,Wang Lei,et al.Influnce of proppant embedment on fracture long-term flow conductivity[J].Natu-..ral Gas Industry,2005(5):65-68.

• [8]刘远亮.低伤害压裂液室内评价及其应用[J].大庆石油学院学报,2010,34(4):57-61.Liu Yuanliang.Laboratory evaluation of low damage fracturing fluid and its application[J].Journal of Daqing Petroleum Institute,2010,34(4):57-61.

• [9]Awoleke O,Romero J,Zhu D,et al.Experimental investigation of propped fracture conductivity in tight gas reservoirs using factorialdesign[C].SPE 151963,2012:1-15.

• [10]金智荣,郭建春,赵金洲,等.支撑裂缝导流能力影响因素实验研究与分析[J].钻采工艺,2007(5):36-38.Jin Zhirong,Guo Jianchun,Zhao Jinzhou,et al.Experimental study and analysis for the influnce factors on flow conductivity of frac-ture proppants[J].Drilling&Production Technology,2007(5):36-38.

• [11]肖勇军,郭建春,王文耀,等.不同粒径组合支撑剂导流能力实验研究[J].断块油气田,2009(3):102-104.Xiao Yongjun,Guo Jianchun,Wang Wenyao,et al.Study on flow conductivity of proppant with different size combination[J].Fault-block Oil&Gas Field,2009(3):102-104.

• [12]金智荣,郭建春,赵金洲,等.不同粒径支撑剂组合对裂缝导流能力影响规律实验研究[J].石油地质与工程,2007(6):88-90.Jin Zhirong,Guo Jianchun,Zhao Jinzhou,et al.Experimental study on the influence of different particle size proppants on fractureconductivity[J].Petroleum Geology and Engineering,2007(6):88-90.

• [13]王雷,张士诚,张文宗,等.复合压裂不同粒径支撑剂组合长期导流能力实验研究[J].天然气工业,2005(9):64-66.Wang Lei,Zhang Shicheng,Zhang Wenzong,et al.Conductivity of the proppant combination with different grain sizes in complexfracturing[J].Natural Gas Industry,2005(9):64-66.

• [14]Rivers M,Zhu D,Hill A D.Proppant fracture conductivity with high proppant loading and high closure stress[C].SPE 151972,2012:1-15.

• [15]孙海成,胥云,蒋建方,等.支撑剂嵌入对水力压裂裂缝导流能力的影响[J].油气井测试,2009(3):8-10.Sun Haicheng,Xu Yun,Jiang Jianfang,et al.The influence of proppant embedment on hydraulic fracture conductivity[J].WellTesting,2009(3):8-10.

• [16]吴柏志.支撑裂缝导流能力实验研究[J].油气田地面工程,2011(8):42-44.Wu Bozhi.Experimental study of propped fracture conductivity[J].Oil-gas Field Surface Engineering,2011(8):42-44.

• [17]郭布民,张士诚,李艳丽,等.支撑剂嵌入对煤岩水力裂缝导流能力的影响[J].大庆石油地质与开发,2010,29(5):121-124.Guo Bumin,Zhang Shicheng,Li Yangli,et al.Impact of proppant embedment on flow conductivity of coalbed rock hydraulic fracture[J].Petroleum Geology and Oilfield Development in Daqing,2010,29(5):121-124.

• [18]李志刚,付胜利,乌效鸣,等.煤岩力学特性测试与煤层气井水力压裂力学机理研究[J].石油钻探技术,2000(3):10-13.Li Zhigang,FuShengli,WuXiaoming,et al.Research on mechanical property test and mechanism of hydraulic fracture of gas well incoal beds[J].Petroleum Drilling Techniques,2000(3):10-13.

• [19]邹雨时,马新仿,王雷,等.中、高煤阶煤岩压裂裂缝导流能力实验研究[J].煤炭学报,2011(3):473-476.Zou Shiyu,Ma Xinfang,Wang Lei,et al.Experimental evaluation of conductivity of fracturing in medium and high-rank coal beds[J].Journal of China Coal Society,2011(3):473-476.

• [20]张士诚,牟善波,张劲,等.煤岩对压裂裂缝长期导流能力影响的实验研究[J].地质学报,2008(10):1444-1449.Zhang Shicheng,Mou Shanbo,Zhang Jin,et al.Experimental evaluation of long-term conductivity of fracturing in coal beds[J].Ac-ta Geologica Sinica,2008(10):1444-1449.

• [21]SY/T6302-1997,压裂支撑剂充填层短期导流能力评价推荐方法[S].SY/T 6302-1997,Recommended practices for evaluating short term proppant pack conductivity[S].