CAJ | 학술논문

为在大牛地气田盒1段储层安全、经济和高效地进行水平井施工,开展了小井眼水平井钻井技术的研究和应用。DP25H三开水平段（2 692~3 492m）长达800m,井径Φ152.4mm,钻井液体系为钾铵基聚合醇。水平段平均机械钻速为6.79m/h,高于本地区常规水平井Φ215.9mm水平段的平均水平（2.76 m/h）;在水平段中共使用钻头5只,其中锐石M1652C钻头4只,一只钻头钻速为7.96 m/h;整个施工过程未曾发生井眼坍塌和埋钻等复杂情况,摩阻保持在200kN左右,而扭矩始终控制在10kN.m以下。
위재대우지기전합1단저층안전、경제화고효지진행수평정시공,개전료소정안수평정찬정기술적연구화응용。DP25H삼개수평단（2 692~3 492m）장체800m,정경Φ152.4mm,찬정액체계위갑안기취합순。수평단평균궤계찬속위6.79m/h,고우본지구상규수평정Φ215.9mm수평단적평균수평（2.76 m/h）;재수평단중공사용찬두5지,기중예석M1652C찬두4지,일지찬두찬속위7.96 m/h;정개시공과정미증발생정안담탑화매찬등복잡정황,마조보지재200kN좌우,이뉴구시종공제재10kN.m이하。
Slim-hole horizontal drilling technique has been deliberated and implemented in order to drill horizontal well at the He-1 formation in the Daniudi gasfield safely,economically and efficiently.The well DP-25H,of which horizontal interval totaled at 800m and hole at 215.9mm,has been drilled with drilling fluid system of potassium amino polyalcohol.The average penetration rate along the horizontal interval is 6.79m/h,which is greater than the average level of normal horizontal well in this gasfield.There are five bits in total being used,comprising four bits of Ruishi M1652C,and the penetration rate of one such bit is 7.96 m/h.During the whole construction of horizontal interval,there is no wellbore collapse and drillstring buried.And drag has been kept in 200kN approximately,meanwhile torque is below 10kN·m all along.