龙26-平25长水平段水平井钻井技术

Drilling Technology of L26-P25 Horizontal Well with Long Horizontal Section

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4045.00 m，水平段长2033.00 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 trajectory profile, the difficulties in drilling construction are analyzed and the technical measures adopted in this well are elaborated in detail in well trajectory control, rotary geo-steering drilling technology, friction and torque monitoring, hole cleaning and some other aspects. L26-P25 long well is 4045.00m in total depth and 2033.00m in horizontal section; all the indexes 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.