slim hole

基本解释

Technical measures are put forward to improve economic benefit in the case of slim hole filling pile construction.
通过科学、合理的施工，可提高小口径钻孔灌注桩工程的经济效益。
Considering small annular clearance and large hole curvature in slim hole, the nonlinear mechanics analysis of BHA is carried out by gap-element method.
针对小井眼水平井环空间隙小、曲率大的特点，应用间隙元法对下部钻具组合进行了非线性静力学分析；
Slim hole drilling technology can be used to recover the low permeability poor reservoirs efficiently, as the conventional development method costs too much and produces little profits.
为解决我国大量低渗透、低丰度储量无法动用的问题，近年来分别在大庆、吉林和长庆等油田分公司开展了小井眼钻井技术的研究与试验工作。

Next come slim-hole wells, which help determine the economic viability of a project and define indicated resources.
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小井眼
The annulus pressure-loss of slim-hole drilling is higher than general drilling due to its narrow annulus. During calculating pressure-loss, the effects of drilling pipe joints, drilling string rotation, eccentricity and borehole wall roughness must be considered.
小井眼的窄间隙几何特性决定了小井眼环空压耗大,钻柱偏心、钻柱旋转、钻具接头和井壁粗糙度等对环空压耗的影响有其特殊性,使得常规的水力参数优化设计方法不能完全适用。