drilling centralizer

Aim To make the study by the method of paleomagnetic fabric analysis on samples from drilling cores of Yanchang formation in South of Tianhuan sag.

结论磁组构分析古水流方向与轻重矿物组合法判断的物源方向一致,表明应用磁组构分析钻井岩心古水流方向的方法是可行、可靠的,利用磁组构分析方法恢复古水流方向,判识物源具有较好的应用前景。

Design optimization of PDC bit based on core information of volcanic layer

基于火山岩地层钻井岩心资料的PDC钻头设计改进

Effect of Hailar basin cores and drilling fluid on carbon dioxide gas testing

海拉尔盆地岩心与钻井液对CO_2气测的影响

The Multi-functions of Micro-bubble Drilling Fluid for Core Drilling

微泡钻井液在岩芯钻探中的多重功效

electrically driven rotary sidewall sampler

电动钻进式井壁取心器

Promote the efficiency of drilling equipments in tunneling and drilling rocks

提高钻探设备在岩石中掘进钻井的效率

Application of Hydraulic Pressure System of Umbrella Drill to the Construction of Shaft in Hard Rock

液压伞钻在立井硬岩段施工中的应用

Study of mixed gas production simulation test for drilling fluid and sandstone

钻井液与砂岩混合产气模拟实验研究

Brief Study on the Rock Fragmentation Test Bed of Air Rotary Percussion Drilling

空气冲旋钻井破岩试验台架研制初探

DRILLING AND COMPLETION DAMAGE MODEL OF FRACTURED AND LOSS CARBONATE GAS RESERVOIR

裂缝漏失性碳酸盐岩气藏钻井完井损害模式

RESEARCH ON SAFETY DRILLING PERIOD OF HORIZONTAL WELL IN THE LOOSE SANDSTONE RESERVOIR

疏松砂岩储层水平井安全钻井周期确定研究

Calculation of Eccentric Wellbore Pressure Drop and Air Volume Requirements in Air Drilling

空气钻井偏心井筒压力及注气量计算

Experimental Studies of Rock Drillability and Rock Mechanics of Deep Well-bore

深部井眼岩石可钻性与岩石力学特性实验研究

Diamond core drilling equipment conventional system

GB/T16950-1997金刚石岩心钻探钻具设备

Traditionally, various subphase belts for irruptive rock body are studied and analyzed by mainly drilling well and coring.

传统上对侵入岩体各亚相带的研究和判断，主要通过钻井取心来认识。

To bore(a shaft) with a trepan.

钻用钻井机钻（矿井）

continuous sidewall core cutter

连续式井壁岩心切割器

hard rock coring tool

坚硬岩石井壁取心器

Bottom-Hole Dynamic Coring Assembly Analysis Using the Finite Element Method and Deviation Control Research of Chinese Continental Scientific Drilling No.1 Well;

科钻一井井下动力取心钻具组合有限元分析与井斜控制研究