元坝7井超深井高温高压小间隙尾管固井技术
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摘要
元坝7井完钻井深7 366m,具有超高温高压、油气活跃、地层易漏、尾管环空间隙小、顶替效率难以保证等诸多固井难点。通过优化固井方案,优选了抗高温防气窜加重胶粒水泥浆体系和冲洗型加重隔离液体系,制定配套防气窜、防漏等固井技术措施。现场应用结果表明,该井尾管固井质量良好,有效封固了气层,达到了预期目的,为后续进入试气作业奠定了井筒基础,同时也可为类似超深井高温高压高密度小间隙固井提供借鉴和参考。
The depth of well Yuanba-7 is 7366 m. Its cementing faces many complex problems, such as ultra-deep and HPHT, active oil and gas, easy leakage formation, small annular space of liner, unsure displacement ef-ficiency and so on. By optimizing the cementing scheme, high-temperature gas migration prevention coupledwith weighted gel particle cement slurry and flush type weighted spacer have been adopted, assorted cementingtechnology measures has been developed to meet the qualification of gas migration prevention, leak protection,etc. Field application result shows that the desired purpose that the quality of liner cementing is highly improved,and the gas reservoir is sealed effectively. It not only lays the wellbore foundation for the gas testing, but also pro-vides reference for small annular space cementing in ultra-deep, HPHT and high density well.
The depth of well Yuanba-7 is 7366 m. Its cementing faces many complex problems, such as ultra-deep and HPHT, active oil and gas, easy leakage formation, small annular space of liner, unsure displacement ef-ficiency and so on. By optimizing the cementing scheme, high-temperature gas migration prevention coupledwith weighted gel particle cement slurry and flush type weighted spacer have been adopted, assorted cementingtechnology measures has been developed to meet the qualification of gas migration prevention, leak protection,etc. Field application result shows that the desired purpose that the quality of liner cementing is highly improved,and the gas reservoir is sealed effectively. It not only lays the wellbore foundation for the gas testing, but also pro-vides reference for small annular space cementing in ultra-deep, HPHT and high density well.
引文
[1]张兴才.固井超高温水泥浆体系研究及应用[M].成都:西南石油大学,2016:2-5.
[2]郑建翔,季建华,李学清.深井小间隙尾管固井水泥浆体系研究与应用[J].石油钻探技术,2006,34(4):55-57.
[3]赵晓栋,武毅,杨建政,张文平,高德利,顾军.米桑油田储层段小井眼固井技术研究[J].新疆石油天然气,2015,11(1):32-36.
[4]刘崇建,刘孝良,刘乃震,王廷瑞.提高小井眼水泥浆顶替效率的研究[J].天然气工业,2003,23(2):46-49.
[5]孟庆拥,秦文革.小井眼固井工艺技术研究及现场应用[J].石油天然气学报,2005,27(1):217-218.
[6]陶世平,段保平,王学良,秦静,周芝琴,刘蕊华,杨小妹.吐哈小井眼固井完井技术的研究与实践[J].西部探矿工程,2003,81(2):67-69.
[7]刘德平,付华才,任清平,莫光文,罗勇,常仕兰,余兴云.提高小井眼固井质量研究[J].天然气工业,2004,24(10):75-77.
[8]何生辉,高俊奎,牛庆华.小井眼固井技术[J].钻采工艺,2006,29(4):12-13,7.
[9]黎亮.小井眼窄间隙尾管固井工艺[J].新疆石油天然气,2009,5(1):41-43.
[10]李坤,徐孝思,黄柏宗.紧密堆积优化水泥浆体系的优势与应用[J].钻井液与完井液,2002,19(1):1-9.
[11]张兴才.固井超高温水泥浆体系研究及应用[M].成都:西南石油大学,2016:30-32.
[12]王文斌,马海忠,魏周胜.抗冲击韧性水泥浆体系室内研究[J].钻井液与完井液,2004,,2(1):36-39.
[13]张铎远.浆体性能及井眼条件对顶替效率的影响研究[M].东营:中国石油大学(华东),2004:21-59.
[14]顾军.矿场固井技术[M].北京:石油工业出版社,1997.
[2]郑建翔,季建华,李学清.深井小间隙尾管固井水泥浆体系研究与应用[J].石油钻探技术,2006,34(4):55-57.
[3]赵晓栋,武毅,杨建政,张文平,高德利,顾军.米桑油田储层段小井眼固井技术研究[J].新疆石油天然气,2015,11(1):32-36.
[4]刘崇建,刘孝良,刘乃震,王廷瑞.提高小井眼水泥浆顶替效率的研究[J].天然气工业,2003,23(2):46-49.
[5]孟庆拥,秦文革.小井眼固井工艺技术研究及现场应用[J].石油天然气学报,2005,27(1):217-218.
[6]陶世平,段保平,王学良,秦静,周芝琴,刘蕊华,杨小妹.吐哈小井眼固井完井技术的研究与实践[J].西部探矿工程,2003,81(2):67-69.
[7]刘德平,付华才,任清平,莫光文,罗勇,常仕兰,余兴云.提高小井眼固井质量研究[J].天然气工业,2004,24(10):75-77.
[8]何生辉,高俊奎,牛庆华.小井眼固井技术[J].钻采工艺,2006,29(4):12-13,7.
[9]黎亮.小井眼窄间隙尾管固井工艺[J].新疆石油天然气,2009,5(1):41-43.
[10]李坤,徐孝思,黄柏宗.紧密堆积优化水泥浆体系的优势与应用[J].钻井液与完井液,2002,19(1):1-9.
[11]张兴才.固井超高温水泥浆体系研究及应用[M].成都:西南石油大学,2016:30-32.
[12]王文斌,马海忠,魏周胜.抗冲击韧性水泥浆体系室内研究[J].钻井液与完井液,2004,,2(1):36-39.
[13]张铎远.浆体性能及井眼条件对顶替效率的影响研究[M].东营:中国石油大学(华东),2004:21-59.
[14]顾军.矿场固井技术[M].北京:石油工业出版社,1997.