石油钻探技术
石油鑽探技術
석유찬탐기술
PETROLEUM DRILLING TECHNIQUES
2014年
2期
112-116
,共5页
火成岩%PDC钻头扭转冲击工具%复合钻井%准噶尔盆地%哈山3井
火成巖%PDC鑽頭扭轉遲擊工具%複閤鑽井%準噶爾盆地%哈山3井
화성암%PDC찬두뉴전충격공구%복합찬정%준갈이분지%합산3정
igneous rock%PDC bit%torsional impact tool%compound drilling%Junggar Basin%Well Hashan 3
为解决准噶尔盆地火成岩地层岩石坚硬、可钻性差、井斜问题突出等技术难点，进行了火成岩地层“PDC钻头＋扭转冲击工具”复合钻井技术研究。针对火成岩地层岩性特点和钻井技术难点，通过研制具有较强耐磨性的φ311.1 mm PK6245M JD型PDC钻头，与适合PDC钻头机械剪切破岩机理的SL T IT型扭转冲击工具配合形成了“高效PDC钻头＋SLTIT型扭转冲击工具”复合钻井技术，并在哈山3井火成岩地层取得了较好的应用效果。现场应用发现，“φ311.1 mm PK6245MJD型PDC钻头＋SLTIT型扭转冲击工具”一次入井连续工作649 h ，单趟钻进尺457.50m，平均机械钻速1.0m/h，行程钻速0.7m/h，与相邻上部火成岩井段相比，至少节约了11趟起下钻的时间与钻头费用；同时井斜角由入井前的4.2°（井深2882.00 m ）降至1.2°（井深3310.00 m ），纠斜效果明显。现场应用表明，“φ311.1 mm PK6245MJD型PDC钻头＋SLTIT型扭转冲击工具”复合钻井技术是实现准噶尔盆地火成岩地层优快钻井的一种有效技术手段。
為解決準噶爾盆地火成巖地層巖石堅硬、可鑽性差、井斜問題突齣等技術難點，進行瞭火成巖地層“PDC鑽頭＋扭轉遲擊工具”複閤鑽井技術研究。針對火成巖地層巖性特點和鑽井技術難點，通過研製具有較彊耐磨性的φ311.1 mm PK6245M JD型PDC鑽頭，與適閤PDC鑽頭機械剪切破巖機理的SL T IT型扭轉遲擊工具配閤形成瞭“高效PDC鑽頭＋SLTIT型扭轉遲擊工具”複閤鑽井技術，併在哈山3井火成巖地層取得瞭較好的應用效果。現場應用髮現，“φ311.1 mm PK6245MJD型PDC鑽頭＋SLTIT型扭轉遲擊工具”一次入井連續工作649 h ，單趟鑽進呎457.50m，平均機械鑽速1.0m/h，行程鑽速0.7m/h，與相鄰上部火成巖井段相比，至少節約瞭11趟起下鑽的時間與鑽頭費用；同時井斜角由入井前的4.2°（井深2882.00 m ）降至1.2°（井深3310.00 m ），糾斜效果明顯。現場應用錶明，“φ311.1 mm PK6245MJD型PDC鑽頭＋SLTIT型扭轉遲擊工具”複閤鑽井技術是實現準噶爾盆地火成巖地層優快鑽井的一種有效技術手段。
위해결준갈이분지화성암지층암석견경、가찬성차、정사문제돌출등기술난점，진행료화성암지층“PDC찬두＋뉴전충격공구”복합찬정기술연구。침대화성암지층암성특점화찬정기술난점，통과연제구유교강내마성적φ311.1 mm PK6245M JD형PDC찬두，여괄합PDC찬두궤계전절파암궤리적SL T IT형뉴전충격공구배합형성료“고효PDC찬두＋SLTIT형뉴전충격공구”복합찬정기술，병재합산3정화성암지층취득료교호적응용효과。현장응용발현，“φ311.1 mm PK6245MJD형PDC찬두＋SLTIT형뉴전충격공구”일차입정련속공작649 h ，단쟁찬진척457.50m，평균궤계찬속1.0m/h，행정찬속0.7m/h，여상린상부화성암정단상비，지소절약료11쟁기하찬적시간여찬두비용；동시정사각유입정전적4.2°（정심2882.00 m ）강지1.2°（정심3310.00 m ），규사효과명현。현장응용표명，“φ311.1 mm PK6245MJD형PDC찬두＋SLTIT형뉴전충격공구”복합찬정기술시실현준갈이분지화성암지층우쾌찬정적일충유효기술수단。
A drilling technique combining PDC bit and torsional impact tool has been developed and applied in drilling through the igneous rocks of Junggar Basin w hich solves the technical difficulties such as high hard-ness ,poor drillability and serious well deviation ,etc in drilling through igneous rock formation .In view of the li-thologic characteristics and technical difficulties of igneous rocks ,PK6245MJD PDC bit for φ311.1 mm diame-ter borehole with strong wear resistance was developed ,which combined with SLTIT type torsional impact tool suitable for PDC’ s rock shear breaking mechanism ,forming a composite drilling technique .The technique showed effective performance in drilling igneous rocks in Well Hashan 3 .In field application ,φ311.1 mm PK6245MJD PDC bit and SLTIT type torsional impact tool reached a continuous working time of 649 h with 457.50 m of drilling footage in one trip .The ROP was 1.0 m/h ,and its roundtrip ROP was 0.7 m/h .Com-pared with the drilling situation of adjacent upper igneous rocks ,at least 11 trip times and bit cost were saved . At the same time well deviation dropped from 4.2° at 2 882 m down to 1.2° at 3 310 m .So the composite drilling technique with φ311.1 mm PK6245MJD PDC bit and SLTIT type torsional impact tool is an effective way to realize optimal and fast drilling in igneous rock formations of Junggar Basin .
