borehole wall
井壁
2025-06-26 02:20 浏览次数 3
井壁
shale stability coupling with mechanics and chemistry is a focus of attention in the field of borehole wall stability study.
泥页巖井壁失稳的化学与力学耦合作用是井壁稳定性研究中较为关注的问题。
seeing the borehole wall as the boundary, the heat transfer area of u-tube will be classified into inside part and outside part.
以鉆孔壁为界,将u型埋管的换热区域划分为内外两个部分。
and the laboratory test proves that the technique of high temperature artificial borehole wall can satisfy the needs of sand control in the field.
而通过室内试验证明,高温人工井壁完全能够满足现场防砂要求。
application of double-pipe protecting borehole wall blasting in development laneway of qingping phosphate mine;
本文介绍了护壁爆破原理和方法以及其在东峡煤矿、潍坊煤矿的应用情况。
the tool can provide us the 3d borehole wall images reflecting visual and accurate casing deformation, corrosion and faults.
该技术可提供井壁立体图,直观準确地反映套管状况,如套管变形、腐蚀穿孔和错断等。
the quantitative description of fractured zone with borehole wall unrolled images was studied; it is indicated that the percentage of image area is also applicable for fractured zone grading.
用数字鉆孔摄像孔壁展开图上破碎区域面积占图像总面积的百分比可定量描述破碎程度。
at present, the most popular trenchless pipeline installation method is guided boring, but in the guided boring cave-in of the borehole wall eternally are encountered in quicksand formation.
目前最流行的非开挖铺管技术为导向鉆进法,但这种施工法在流砂地层施工时容易发生塌孔。
the results show that:1)under a periodical pulsed heat generation, the temperature of borehole wall has a fluctuant rising tendency;
实验结果表明:1)在周期性脉沖热流的作用下,鉆孔壁温度呈周期性震蕩并逐渐升高;
the inside part and outside part are combined with the temperature of borehole wall directly.
内外两部分之间通过鉆孔壁温耦合连接。
the isochromatic fringes graphs of smooth blasting and cutting seam blasting of pipe protecting borehole wall were obtained upon dynamic photo-elasticity experiments on both kinds of blasting.
进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验,获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。
mechanism of smooth borehole wall protection blasting and calculation method of the charge are analyzed in this paper.
分析了光面护壁爆破的机理和装药量的计算方法。
a preliminary discussion is made on surface charge distribution on the borehole wall and volume charge distribution in the flushed zone in a borehole by using the theoretical results.
应用所得理论结果,对裸眼井井壁的面电荷分布和地层沖洗带内的体电荷分布情况作了初步的探讨。
meanwhile, the predicting method of stress is proposed based on bp's neural network by using the seismic interval velocity, in order to predict borehole wall stability.
同时给出了利用地震层速度预测地应力的bp神经网络模型,以在鉆前预测井壁稳定性。
the features and proportions of slurry and effect of borehole wall protection in different loose strata were mainly introduced.
重点介绍了松散地层不同地层泥浆特性、配比及护壁效果、措施。
in this member, because of mudstone water sensitive hydration and coarse-grained sandstone is easy to collapse, thus result in borehole wall very unstable, and drill pipe sticking is very often.
依兰矿区第三系上部的砂泥巖段,因泥巖的水敏水化作用及粗砂巖易坍塌等原因造成,区内鉆孔孔壁极不稳定,经常发生粘卡鉆具事故。
it can be concluded that cutting seam cartridge blasting has a distinct energy cavity effect and protecting borehole wall effect and its optimum decouple coefficient is 1.
通过理论和实验研究了切缝药包爆破机理和爆破参数,结果表明,切缝药包爆破有明显的聚能效应和护壁作用,其最佳装药不耦合系数为1。
the stability of rock debris is strong, it can prevent borehole wall from sloughing effectively.
稳定鉆屑的能力强,可以有效的防止井壁坍塌。
the results show that double-pipe protecting borehole wall blasting can be used to protect reserved rock by double-pipe, and to avoid blasting damnification under shock wave and burst gas.
分析认为:在沖击波和爆生气体準静压作用下,光面护壁爆破在产生定向爆裂巖石的同时,保留部分巖体得到药包外壳半圆管的保护,从而避免爆破损伤。
the contact and friction of a drill pipe string with borehole wall and its deformation are analyzed and calculated with modified newton iteration and approximate gradient increment of loading.
用修正的牛顿迭代法进行迭代运算和用近似梯度增量法修改载荷增量,并对鉆柱与井壁的接触摩擦和鉆柱变形进行了分析计算。