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浅层水平井油层埋深浅、地层疏松、直井段短、水平段长、摩阻扭矩大,钻压传递困难,造斜段及水平段钻进摩阻大,导致后期滑动钻进困难,很难实现轨迹控制。为此,研制一种工具通过轴向震动,可有效消除或缓解钻具屈曲,并把钻具与井壁之间的静摩擦力转化为动摩擦力,使钻压更有效地传递到钻头,并且工具的不断振动避免了井下钻具发生粘卡的可能性。为满足现场试验要求,在试验室开展浅层水平井振动减阻工具性能测试,并对试验结果进行分析。
Shallow horizontal wells have shallow burial depth, loose strata, short straight section, long horizontal section, large frictional torque and difficult transmission of weight-boring pressure, large drilling friction in the inclined section and the horizontal section, which makes it difficult to slip-drill in the later stage. Achieve trajectory control. Therefore, the development of a tool through the axial vibration, which can effectively eliminate or ease the buckling of the drill, and the static friction between the drill and shaft wall into dynamic friction, the WOB more effectively transmitted to the drill, and tools The constant vibration avoids the possibility of sticking down in a downhole drill. In order to meet the requirements of field test, the performance test of the tool for vibration reduction and drag reduction in shallow horizontal wells was carried out in the laboratory and the test results were analyzed.