Drilling Technology of L26 -P25 Horizontal Well with Long Horizontal Section
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摘要: 为了高效开发低渗透油藏,在大庆油田龙26区块部署了龙26-平25长水平段水平井。介绍了井身结构与井眼轨迹剖面设计特点,分析了钻井施工中的难点,从井眼轨迹控制、旋转地质导向钻井技术、摩阻与扭矩监测、井眼清洁等几个方面对该井采用的技术措施进行了详细阐述。龙26-平25井完钻井深4045畅00 m,水平段长2033畅00 m,各项指标均符合设计要求,创出了大庆油田应用水基钻井液施工水平井水平段最长的记录,为今后施工同类型长水平段水平井积累了宝贵的施工经验。Abstract: In order to develop the low permeability reservoir, the horizontal well with L26-P25 long horizontal section was deployed in Long 26 block of Daqing oil field.Based on the introduction of casing program and design features of well traj-ectory profile, the difficulties in drilling construction are analyzed and the technical measures adopted in this well are elabo-rated in detail in well trajectory control, rotary geo-steering drilling technology, friction and torque monitoring, hole clean-ing and some other aspects.L26-P25 long well is 4045.00m in total depth and 2033.00m in horizontal section;all the in-dexes meet the design requirements.It is a record of the longest horizontal section in horizontal well with water-base drilling fluid in Daqing oilfield, the construction experience is accumulated for the same type horizontal well with long horizontal section in future.
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