欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
针对偏轴钻具在窿9井中的轨迹控制问题,采用非线性动力学分析方法,综合考虑钻具与井壁的不确定性边界条件、井底对钻头的反向激励、钻柱的屈曲等力学要素,建立了偏轴钻具组合的动力学模型,对模型进行了求解,获得了钻头运动轨迹。计算结果表明,原有钻井参数下,偏轴钻具组合的钻头多在第四象限运动,使切削该方位井底岩石的力度加大,即钻头将朝向该方向偏斜,从而使井斜增加;调整钻井参数后,显著提高了偏轴钻具的防斜能力,也提高了钻头运动的平稳性。
英文摘要：
In light of the trajectory control problem with offset-axes assembly in Well Long 9, the dynamic model of offset-axes assembly was established adopting the nonlinear dynamic analysis which took into consideration the indeterminate boundary conditions of the assembly and the sidewall, the bottomhole reverse excitation to the drill bit and the drill stem buckling. The model was solved and the movement path of the bit was obtained. The calcula- tion shows that under the original drilling parameters the bit of the assembly tends to move within the fourth quad- rant, causing the force become greater which cuts the bottomhole rocks of the direction. In other words the bit de- flects to the direction so as to increase hole deviation. The anti-deflection capacity of the assembly has been im- proved remarkably after regulating drilling parameters and the stability of the bit movement has also been improved.
同期刊论文项目
同项目期刊论文
The parameter sensibility analysis for fishing box tap based on the overall process of elastoplastic
Mechanism analysis and process optimization of sand and plug removal with rotating jet in horizontal
期刊信息
位置：