查询词典 drilling stem

The result shows that the drainage of surface drilling well reduces the gas concentration of outtake air in working face to a great degree and the drainage effect is restricted by factors of coal seam and location of surface drilling well.

研究结果表明：地面钻井抽采将很大程度上减小工作面回风流的瓦斯含量，且抽采效果受到煤层条件和钻井位置的制约。

Automatic punching bending machine; full-gear transmission Desk / li drilling; automatic cutting table / li drilling; automatic profiling gas cutting machine; high

青海华鼎实业股份有限公司番禺石楼机械厂拥有固定资产3560万元，占地29488平方米，厂房面积14500平方米，加工机床150多台，员工280多人，产值5000万元。

In the maximal axial pulling-out force group, the hollow nails were directly implanted into 10 femoral neck samples after drilling at the axial center. The polymethyl methacrylate bone cement was inserted into other 10 femoral neck samples after drilling at the axial center, and the side-hole hollow nail were then implanted.

最大轴向拔出力实验分组，10个股骨颈在轴向正中钻孔后直接置入空心钉，另10个股骨颈在轴向正中钻孔后注入聚甲基丙烯酸甲酯骨水泥，然后置入带侧孔的空心钉。

The main products: geological accessories; drill, drill gear; mud pump, mud pump accessories; and drill pipe, joint locks, consisting mainly of drilling materials, to pull the drill pipe, casing pliers, Bocha, consisting mainly of drilling pad fork Tools; series of geological accessories ......

主要产品：地质配件；钻机，钻机齿轮；泥浆泵，泥浆泵配件；和以钻杆，锁接头，为主的钻探材料；以钻杆钳子，套管钳子，拨叉，垫叉为主的钻探工具；等系列地质配件。。。。。。

After reformation of drill pump, rotary table and drilling rod , the triple-men portable rig has a chieved good results when drilling is in breed zone by netting box and other land areas.

对三人钻机的压水泵、转盘、钻杆部件进行改进后，三人钻机在围网养殖区以及其它陆上钻井时，都取得了良好的效果。

Currently, the widespread adoption of a keel approach survey containing floor, the impact of drilling or Dianchui used in the drilling 50,730 holes 5-6 cm in wood cleat placement Kong Lane, then keel governor wooden wedge.

目前，普遍采用打龙骨的办法铺装实木地板，用冲击钻或电锤在楼板上钻5至6厘米的孔，在孔里安插木楔子，再将龙骨钉入木楔子。

Dongguan Exhibition Fenggang metal mold Fitch Dongguang Fenggang town, the company specialized EDM, Drilling Machine, EDM consumption and mold materials, such as precision room supplies, wire-cut filters, ion exchange resins, ion exchange resins , derusting water KC-12.K-200, RHV600, electrical conductors are flush Tsui, insulation board, wire guide pulley, tension wheels, drilling machine with diamond Introduction Tsui, VITOL processing fluid, and fast wire molybdenum wire with a bright, steel guide pulley, precious stones guide pulley, guide pulley components, guide pulley bushing, conductive block.

东莞市凤岗展誉模具五金位于东莞市凤岗镇，公司专业经营线切割机，打孔机，火花机消耗材及模房等精密用品，线切割用过滤器，离子交换树脂，离子交换树脂，除锈水KC-12.K-200，RHV600，导电体，冲水咀，绝缘板，引线导轮，张力轮，打孔机用钻石导咀，VITOL加工液，及快走丝用光明钼丝，钢导轮，宝石导轮，导轮组件，导轮衬套，导电块。

The paper introduces the technology of optimization design of wellbore proile, the casing window-opening technology, and the barefoot laterally drilling technology. In view of such problems as the poor wellbore stability of large hole, the easily collapsed "Shuangshi bed", the barefoot laterally drilling, the different depth of production formations, the frequent trajectory adjustment, the prediction of torque and drag, and window entry of branch wells, systematic reasonable technical measures are established.

介绍了该井井身剖面优化设计、套管开窗及裸眼侧钻等新技术，针对表层大井眼井壁稳定性差、&双石层&易垮塌、裸眼侧钻、气层深度不一、轨迹调整频繁、摩阻扭矩预测及分支井所面临窗口再入等一系列技术难题，制定了一整套合理的技术措施。

Thin under-saturated silicate brine drilling fluid is one of the well-proven technologies for drilling salts and gypsum rocks.

盐泥是盐化工业生产过程中产生的固体废物，稀硅酸盐欠饱和盐水钻井液是盐膏层钻井的成熟技术之一。

Operation time requirements and the short drilling season normally result in a rig drilling one well per season.

作业时间要求和钻井季节短，通常会导致一套钻机每季只钻一口井。

The Master of Science degree program in Economics features a curriculum that is flexibl...

在经济学理学硕士学位的课程计划的特点是灵活而全面的方法，在理论和应用课程培训工作。

This module is used for constructing and visualizing 3D models.

该模块是用于建设和可视化的三维模型。