阿克纠宾超低压长水平段水平井钻井关键技术
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摘要
北特鲁瓦及让那诺尔油田位于哈萨克斯坦阿克纠宾州滨里海盆地东缘,其复杂的碳酸盐油气藏普遍存在地质构造复杂、目的层边界和厚度变化大、储层压力亏空严重、钻遇率低及下部高研磨性灰泥岩机械钻速低等突出问题。为了攻克以上技术难题,通过开展井身结构优化、个性化钻头、旋转地质导向工具及钻井液体系优选,形成了适用于该地区长水平段水平井的钻完井关键技术。该技术在北特鲁瓦油田H814井进行了首次试验应用,截至2017年12月,已在现场应用了8口井,平均完钻井深4 143. 0 m,平均水平段长度987. 69 m,平均机械钻速提高约45%,平均储层钻遇率由原来的38. 00%提高到79. 95%,证明了该技术在该地区的适用性。由于滨里海盆地具有很强的地层规律性,所以该长水平段水平井钻井关键技术对提高机械钻速和储层钻遇率具有积极的指导和借鉴意义。
The North Tluwa Oilfield and Zhanazhol Oilfield are located on the eastern edge of Pre-Caspian Basin in Kazakhstan,where complex carbonate oil and gas reservoirs present many problems like complex geological structure,large boundary and thickness change of target layer,serious reservoir pressure depletion,low reservoir drilling rate and low mechanical drilling speed in deep abrasive limestone. In order to address the above problems,by the casing program optimization,fit-in-purpose drill bit,rotary geosteering tool and drilling fluid system selection,the key technologies for drilling and completion of horizontal wells with long lateral section in the area have been established. The technologies were first tested in Well H814 in the North Tluwa. As of December 2017,8 wells have been applied with the average increased drilling rate about 45% and the average increased reservoir drilling rate of 41. 95%,proving the feasibility of the technologies in the region. In view of the strong stratigraphic regularity of Pre-Caspian Basin,the established key technologies for horizontal well drilling could provide guidance and references for enhancing drilling speed and improving reservoir drilling rate.
The North Tluwa Oilfield and Zhanazhol Oilfield are located on the eastern edge of Pre-Caspian Basin in Kazakhstan,where complex carbonate oil and gas reservoirs present many problems like complex geological structure,large boundary and thickness change of target layer,serious reservoir pressure depletion,low reservoir drilling rate and low mechanical drilling speed in deep abrasive limestone. In order to address the above problems,by the casing program optimization,fit-in-purpose drill bit,rotary geosteering tool and drilling fluid system selection,the key technologies for drilling and completion of horizontal wells with long lateral section in the area have been established. The technologies were first tested in Well H814 in the North Tluwa. As of December 2017,8 wells have been applied with the average increased drilling rate about 45% and the average increased reservoir drilling rate of 41. 95%,proving the feasibility of the technologies in the region. In view of the strong stratigraphic regularity of Pre-Caspian Basin,the established key technologies for horizontal well drilling could provide guidance and references for enhancing drilling speed and improving reservoir drilling rate.
引文
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[2]戴勇,郝力博,康克利,等.北特鲁瓦油田H814井钻完井及储层改造一体化设计及应用[J].新疆石油天然气,2017,13(1):45-48.DAI Y,HAO L B,KANG K L,et al.Integrated design&application of drilling&completion and reservoir reconstruction for north Tluwa oilfield H814 well[J].Xinjiang Oil&Gas,2017,13(1):45-48.
[3]黄松伟,张献丰,刘自广,等.希望油田优快钻井综合配套技术应用研究[J].断块油气田,2010,17(3):379-381.HUANG S W,ZHANG X F,LIU Z G,et al.Application research of integrated matching drilling technique with high quality and speed in Hope Oilfield[J].FaultBlock Oil&Gas Field,2010,17(3):379-381.
[4]常领,陈华忠.PDC钻头在胜利油田深井钻井中的应用[J].石油钻探技术,2007,35(4):92-93.CHANG L,CHEN H Z.Application of PDC bits to deep wells in Shengli Oilfield[J].Petroleum Drilling Techniques,2007,35(4):92-93.
[5]豆宁辉,杨顺辉.锥形PDC齿破岩机理仿真研究[J].石油矿场机械,2015,44(11):12-17.DOU N H,YANG S H.Simulation research of conical PDC cutter rock-breaking mechanism[J].Oil Field E-quipment,2015,44(11):12-17.
[6]孙源秀,邹德永,侯绪田,等.锥形PDC齿犁切破岩受力试验研究[J].石油机械,2014,42(9):23-26.SUN Y X,ZOU D Y,HOU X T,et al.Test of force of conical PDC cutter during rock plow-breaking[J].China Petroleum Machinery,2014,42(9):23-26.
[7]张程光,吴千里,王孝亮,等.塔里木深井薄油层旋转地质导向钻井技术应用[J].石油勘探与开发,2013,40(6):747-751.ZHANG C G,WU Q L,WANG X L,et al.Application of rotary geosteering drilling in deep and thin reservoirs of Tarim Basin[J].Petroleum Exploration and Development,2013,40(6):747-751.
[8]万学鹏,欧瑾,钟楚荣,等.PeriScope随钻成像测井技术在水平井中的应用[J].国外测井技术,2009,26(1):45-47.WAN X P,OU J,ZHONG C R,et al.Application of LWD periscope imaging well logging technology in horizontal wells[J].World Well Logging Technology,2009,26(1):45-47.
[9]张卫平,邓强,赵国权.PeriScope随钻边界测量仪渤海油田应用状况[J].石油科技论坛,2011,30(5):30-32.ZHANG W P,DENG Q,ZHAO G Q.Application of PeriScope boundary surveying instrument in Bohai Oilfield[J].Petroleum Science and Technology Forum,2011,30(5):30-32.
[10]成艳,白玉洪.PeriScope随钻测井技术在海上高含水油藏挖潜中的应用[J].海洋石油,2015,35(2):87-90.CHENG Y,BAI Y H.PeriScope LWD applied in taping the remaining oil of high water cut in offshore field[J].Offshore Oil,2011,35(5):30-32.
[11]霍进,宋渝新,张一军,等.PeriScope随钻测井技术在克拉玛依油田水平井开发中的应用[J].新疆石油地质,2008,29(2):238-239.HUO J,SONG Y X,ZHANG Y J,et al.Application of LWD periscope to horizontal well development in karamay oil field[J].Xinjiang Petroleum Geology,2008,29(2):238-239.
[12]杨锦舟,马哲,林楠.PeriScope 15方位定向电阻率测量仪的功能与特点[J].录井工程,2009,20(4):53-56,63.YANG J Z,MA Z,LIN N.Functions and features of PeriScope 15 azimuthal orientation resistivity measuring instrument[J].Mud Logging Engineering,2009,20(4):53-56,63.
[13]章增光,陆成和,李忠明.北特鲁瓦油田复杂地层PDC钻头的优选及应用[J].油气开采,2016,42(10):16-17,25.ZHANG Z G,LU C H,LI Z M.Optimization and application of PDC bit in complicated stratum of North Troy Oilfield[J].Oil and Gas Production,2016,42(10):16-17,25.
[14]李忠慧,张春阳,楼一珊,等.钻头优选新方法及其应用[J].天然气工业,2008,28(12):54-56.LI Z H,ZHANG C Y,LOU Y S,et al.New method of bit selection and its application[J].Natural Gas Industry,2008,28(12):54-56.
[15]李贵宾,冯京海,李朝阳,等.堡古1井高温复杂地层PDC钻头的研究与应用[J].钻采工艺,2011,34(2):18-21.LI G B,FENG J H,LI C Y,et al.Study and application of PDC bits in high temperature and complex formation in well Pugu-1[J].Drilling&Production Technology,2011,34(2):18-21.