Drilling a horizontal well is more difficult than a vertical well.
水平井比垂直井更难钻。
Study shows that horizontal well is better than vertical well for improving production result.
研究表明：水平井比直井更利于改善和提高油田开采效果。
The research result has a guiding significance about preventive inclination of vertical well and wellbore trajectory control of inclined well.
研究结果对直井的防斜打直、斜井的井眼轨迹控制具有指导意义。
With consideration of start up pressure gradient and media deformation, this paper studies vertical well production in low permeable reservoirs.
考虑启动压力梯度和介质变形的影响，研究低渗透油藏中直井产量的变化规律。
A mechanical model for installing tubing stabilizer in vertical well is established, and a method of calculating axial force in tubing is presented.
建立了竖直井安装扶正器的油管力学模型，给出了油管任意横截面轴力的计算方法，导出了相邻扶正器之间油管失稳的临界状态方程。
The making principle of horizontal well synthetic seismograms is the same as that of vertical well synthetic seismograms, but the making methods are different.
水平井人工合成记录的制作原理与垂直井相同，但具体的制作方法有所区别。
Two dimensional non equilibrium sorption pseudo steady state model of coalbed methane for vertical well is derived in combination of an American model with the filed situation.
借鉴美国现有模型，结合我国现场实际情况，建立了二维煤层气垂直井的非平衡拟稳态井底渗流数学模型。
There exists the optimal value of space between side laterals, which is similar to the existence of the optimal well pattern and pattern well spacing in vertical well section production mode.
与直井区块开采方式存在最优井网和井距类似，在井的基本结构确定之后，存在最优的分支间距；
Taking into account the rotating effect of the drillstring, this paper presents a bifurcating differential equation for the rotating slender drillstring being in tension in vertical well section.
考虑到垂直井中钻柱受拉段在旋转时的转动效应，建立了顶部悬挂、受分布浮重作用的旋转细长钻柱的分岔微分方程。
Various bending causes occurred during production of aluminum alloy slab are analyzed combined with the actual situation of using vertical well to cast 3003, 1100 aluminum alloy slab in certain plant.
结合某厂竖井铸造生产3003、1100等铝合金扁锭的实际情况，对铝合金扁锭生产过程中出现弯曲现象的各种原因进行分析，提出了合理的预防及控制措施。
Various bending causes occurred during production of aluminum alloy slab are analyzed combined with the actual situation of using vertical well to cast 3003, 1100 aluminum alloy slab in certain plant.
结合某厂竖井铸造生产3003、1100等铝合金扁锭的实际情况，对铝合金扁锭生产过程中出现弯曲现象的各种原因进行分析，提出了合理的预防及控制措施。
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