深层页岩气钻井技术难点与对策
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摘要
深层页岩气埋藏深,岩石强度、温度和压力高,钻进中钻遇层系多,机械钻速低,周期长,成本高,制约了其经济有效开发。针对该问题,对国内外深层页岩气钻井技术进行了对比分析,总结了川东南深层页岩气地质特征和钻井面临的技术难点,结合前期深层页岩气钻井实践,从井身结构优化、钻井参数优化、提速工具优选、轨迹控制、控压降密度、高密度油基钻井液和套管柱设计等方面提出了深层页岩气钻井技术对策。
Deep burial depth,high rock strength,high temperature,high pressure and multiple formation systems leads shale gas drilling to low ROP,long drilling cycle and high drilling cost,which restricts the economic and effective development of the deep shale gas. In view of this problem,comparative analysis of the deep shale gas drilling technology at home and abroad is carried out,and the geological characteristics and the technical difficulties faced by drilling deep shale gas in southeast Sichuan is summarized. Technical countermeasures for deep shale gas drilling are put forward in aspects of casing program optimization,drilling parameters optimization,ROP-improving tool optimization,trajectory control,pressure control,high density oil-based drilling fluid and casing string design,etc.
Deep burial depth,high rock strength,high temperature,high pressure and multiple formation systems leads shale gas drilling to low ROP,long drilling cycle and high drilling cost,which restricts the economic and effective development of the deep shale gas. In view of this problem,comparative analysis of the deep shale gas drilling technology at home and abroad is carried out,and the geological characteristics and the technical difficulties faced by drilling deep shale gas in southeast Sichuan is summarized. Technical countermeasures for deep shale gas drilling are put forward in aspects of casing program optimization,drilling parameters optimization,ROP-improving tool optimization,trajectory control,pressure control,high density oil-based drilling fluid and casing string design,etc.
引文
[1]中华人民共和国地质矿产行业标准. DZ/T 0254-2014页岩气资源储量计算与评价技术规范[S].北京:中国标准出版社.
[2]蒋廷学,卞晓冰,王海涛,等.深层页岩气水平井体积压裂技术[J].天然气工业,2017,37(1):90-96.
[3] Pope C,Peters B,Benton T&Palisch T. Haynesville shale-one operator’s approach to well completions in this evolving play[C]//SPE 125079-MS.
[4] Wood D D,Schmit B E,Riggins L,Johnson B J&Talley C A. Cana Woodford stimulation practices-A case history[C]//SPE 143960-MS.
[5]杨金华,田洪亮,郭晓霞,等.美国页岩气水平井钻井提速提效案例与启示[J].石油科技论坛,2013,32(6):44-48.
[6]路保平.中国石化页岩气工程技术进步及展望[J].石油钻探技术,2013,41(5):1-8.
[7]曾义金.页岩气开发的地质与工程一体化技术[J].石油钻探技术,2014,42(1):1-6.
[8]牛新明.涪陵页岩气田钻井技术难点及对策[J].石油钻探技术,2014,42(4):1-6.
[9]艾军,张金成,臧艳彬,等.涪陵页岩气田钻井关键技术[J].石油钻探技术. 2014,42(5):9-14.
[10]许京国,陶瑞东,郑智冬,等.牙轮-PDC混合钻头在迪北103井的应用试验[J].天然气工业,2014,34(10):71-74.
[11]王显光,李雄,林永学.页岩水平井用高性能油基钻井液研究与应用[J].石油钻探技术,2013,41(2):17-22.
[12]刘伟,陶谦,丁士东.页岩气水平井固井技术难点分析与对策[J].石油钻采工艺,2012,34(3):40-43.
[2]蒋廷学,卞晓冰,王海涛,等.深层页岩气水平井体积压裂技术[J].天然气工业,2017,37(1):90-96.
[3] Pope C,Peters B,Benton T&Palisch T. Haynesville shale-one operator’s approach to well completions in this evolving play[C]//SPE 125079-MS.
[4] Wood D D,Schmit B E,Riggins L,Johnson B J&Talley C A. Cana Woodford stimulation practices-A case history[C]//SPE 143960-MS.
[5]杨金华,田洪亮,郭晓霞,等.美国页岩气水平井钻井提速提效案例与启示[J].石油科技论坛,2013,32(6):44-48.
[6]路保平.中国石化页岩气工程技术进步及展望[J].石油钻探技术,2013,41(5):1-8.
[7]曾义金.页岩气开发的地质与工程一体化技术[J].石油钻探技术,2014,42(1):1-6.
[8]牛新明.涪陵页岩气田钻井技术难点及对策[J].石油钻探技术,2014,42(4):1-6.
[9]艾军,张金成,臧艳彬,等.涪陵页岩气田钻井关键技术[J].石油钻探技术. 2014,42(5):9-14.
[10]许京国,陶瑞东,郑智冬,等.牙轮-PDC混合钻头在迪北103井的应用试验[J].天然气工业,2014,34(10):71-74.
[11]王显光,李雄,林永学.页岩水平井用高性能油基钻井液研究与应用[J].石油钻探技术,2013,41(2):17-22.
[12]刘伟,陶谦,丁士东.页岩气水平井固井技术难点分析与对策[J].石油钻采工艺,2012,34(3):40-43.