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- hole wall collapse 孔壁坍塌
- hole wall collapsed 孔壁坍塌
- The wall collapsed under the strain. 墙壁因承受不了重压而坍塌了。
- The contact between drillstring and bore hole wall in the process of horizontal drilling is of large area and geometrically nonlinear. 长中半径水平井钻柱与井壁的接触问题是大面积接触的几何非线性问题。
- At this time, she is extremely grieved , disobeys to cry dark all round, make Great Wall collapse unexpectedly more than 800 li. 这时,她悲痛欲绝,拗哭得天昏地暗,竟使长城倒塌八百多里。
- Dry and solidify the wet film , liquid light sensitive resistance welding, dry the net board and hole wall, etc. 湿膜、液态感光阻焊的干燥和固化;也可用于网版的干燥;板材和孔壁的干燥等等。
- "Is PTH and small via hole wall quality checked by cross-section and followed by a closed loop corrective action? 是否通过切片检验PTH与小导通孔孔壁状况,并有相应的改善对策跟踪?"
- The calculation and analysis of the damage failure of the plunger hole wall for the aeroplunger pump ZB-16D are presented. 对航空柱塞式液压泵ZB-16D的柱塞腔壁贯穿故障进行了结构和受力分析及计算。
- As a typical example, the contact-impact problem between the drillstring and the bore hole wall in oil field has been calculated and analysed. 文中针对石油工程中钻柱这类典型的细长杆与圆形井壁的接触碰撞问题进行了求解。
- Three spiraled ribs designed to minimize downhole torque, reduce damage to the hole wall and ensure maximum fluid circulation. 产品说明 : 稳定器的三个螺旋叶片能有效地降低井下扭矩,减轻对井壁的损害并确定最大量的泥浆循环。
- North W12-1 Oilfield in Zhanjiang of Guangdong province has drilling problems of borehole wall collapse and stripping, which had often caused accidents of well and instrument burial. 摘要广东湛江W12-1北油田开发过程中遇到了钻井中井壁易垮塌、易剥落的难题,易造成井壁坍塌、掩埋钻井及仪器事故。
- Polymer anti-caving drilling fluid was used to deal with hole wall instability in constriction of directional geothermal well in Tianjin. 针对天津市地热定向井施工中存在的孔壁不稳的问题,经过摸索,采用聚合物防塌钻井液进行护壁堵漏,取得了良好的效果。
- The results show that the contact -impact problem between the slender rod and the wall of a round hole, such as the drillstring and the bore hole wall, can be solved better. 结果表明,动力间隙元能较好地解决细长杆(如钻柱)与圆孔孔壁(如井壁)的接触碰撞问题。
- The low pressure-sealing plug is installed by pressing the plug into a tapered hole. The surface hardened, but flexible plug achieves anchorage by gripping with the hole wall. 该系列为低压力密封堵头。安装时由工具压入锥形孔,软性堵头被压入孔壁表面。该系列有以下特点:
- Officials say the accident may have been caused by a tunnel wall collapsing. 官员说,事故可能是因隧道墙倒塌。
- The influence of stocking upon ground surrounding the borehole on the stability of hole wall and the influence of nearby foundation drilling on the building are also analyzed. 同时,文中分析了孔周地面堆载对孔壁稳定性的影响和临近基础钻孔对建筑物的影响。
- The wall collapsed when a group of children were playing next to it. 当一群孩子正在下一个墙玩耍时,这个墙倒塌了。
- Its filling is surface eluvium material and cavity wall collapsed material. 地下水主要沿着岩层中的裂缝向下渗流,以垂向岩溶为主,主要为高角度的溶蚀裂缝、溶蚀缝合线缝、近于垂直的串珠状中小型溶蚀孔洞沿溶缝、缝合线分布,多为方解石、泥、和其它不同来源成因的渗流砂混合充填。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- The Berlin Wall collapsed,the Soviet Union was crumbling,and she was part of team that developed U.S.policy. 随着柏林墙倒塌和苏联解体,她就成了制订美国政策的小组成员之一。