In order to meet the needs of hydraulic reversecirculation continuous core drilling,the power head has been redesigned.
为了满足水力反循环连续取芯钻进工况的要求，重新设计制造了动力头。
Dual coring techniques were first successfully adopted in directional Well TZ436-16,Tarim Oilfield.
塔里木油田首次在ＴＺ４—３６—１６定向井斜井段采用双简取芯技术并获得成功。
5,Superpave19 and AC-16 was investigated compared with non-nuclear density gauge measure result and coring measure result.
介绍了无核密度仪的检测原理,论述了核子密度仪测试结果同现场取芯结果的对应性,并讨论了温度与压实度随碾压遍数的变化规律。
In this article,coring separate repairing technology is adopted to solve the problem.
介绍了采用二次灌浆层取芯隔离安全修复技术成功解决了工程难题。
Study on drill bit for large diameter core drilling of deep hole in hard rock
硬岩深孔大口径取芯钻进的钻头研究
THE COMPARISON BETWEEN SMALL-HOLE ROPE CORING AND COMMON CORING
小口径绳索取芯法与普通钻进取芯法比较
Drills the Core Method of Sampling about the Improvement Semi-rigid Basic Unit the Suggestion
关于改进半刚性基层钻芯取样方法的建议
Selection of Drill Tool of Testing in Mixing Pile with Core Drilling Method
水泥土搅拌桩钻芯法检测钻具的选取
Application of Flush Liquid to Diamond Drilling with Rope Getting Core Technique in Old Mining Area of Yunnan
绳索取芯金刚石钻进冲洗液在云南老厂矿区的应用
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。
Drilling Fluid Technology Research on Mirabilite Mine Core Drilling in Guyuan of Ningxia;
宁夏固原芒硝矿取芯钻探钻井液技术研究
Improvement and Development of Core Drilling Method in Scientific Drilling
科学钻探取心钻进方法的改进和发展
electrically driven rotary sidewall sampler
电动钻进式井壁取心器
Main Causes and Countermeasures of Mud Cake in Wire-line Coring Drilling
绳索取芯钻探中泥皮产生的原因和对策
Construction Method of Coring for Pore Forming Based on Water Drilling of Super-diameter Rock Pile
超大直径岩石桩水钻取芯成孔的施工技术
Application of Core Drilling Collecting Rate to Evaluate Seam Gas Content and Distribution
应用钻探岩芯采取率评价煤层瓦斯含量及分布
Research on Bionic Coupling Diamond Coring Bits in Drilling Hard Rock
硬岩钻进用仿生耦合金刚石取心钻头研究
Selection of Core Drilling Method for WFSD-2 of Wenchuan Earthquake Scientific Drilling Project
汶川地震科学钻探二号孔取心钻进方法的选择
Analysis of Dependence Relation of GPR and Core-drilling Used in Pavement Thickness Detection
探地雷达与钻孔取芯在路面厚度检测中的相关分析
DEVELOPMENT AND TESTS OF LOW-TEMPERATURE ELECTROPLATED81/2" PDC CORING OIL BITS
低温电铸8(1/2)″复合片取芯油井钻头的研制与试验
Analysis of forces on the graphite mold of core bit for oil during hot pressing
石油取芯钻头石墨模具在热压过程中的受力状况分析
A new type of thin-wall diamond core drill bit for replacing concrete sleeper bolts
铁路混凝土轨枕硫磺锚固螺栓拔出用金刚石取芯钻头