Tubular strings in oil and gas wells are the backbone and central nervous system of oil and
gas drilling and production operations. Tubular mechanics in oil and gas wells is the most …

As a new drilling technology, the ultra-high-speed diamond drilling can exhibit great
superiority in drilling deep hard rock, which can achieve high rates of penetration (ROP) with …

Abstract The estimation of Polycrystalline Diamond Compact (PDC) cutters wear has been
an area of concern for the drilling industry for years now. The cutter's wear has been …

为应对深地探测工程对特深孔地质钻探装备提出的新要求,“十三五” 国家重点研发计划立项开展
5000 m 地质岩心钻机的研发. 作为钻机核心部件的主绞车, 需要满足自动化, 智能化钻探需求 …

Rotary-percussive drilling technique is an efficient rock-breaking method and can be applied
in geothermal drilling. The rock's fragmentation mechanism was investigated using the …

The failure of oil well drillstrings due to torsional and longitudinal stresses caused by stick-
slip phenomena during the drilling operation causes great expense to industry. Due to the …

Drilling is one of the important aspects in the oil and gas industry due to the high demand for
energy worldwide. Drilling time is considered as the major part of the operations time where …

To be able to predict how a certain process will happen before it happens is the trend in all
the industry, enables one to be prepared for the future. In this line of thinking the current …

To be able to predict how a certain process will happen before it happens is the trend in all
the industry, enables one to be prepared for the future. In this line of thinking the current …

Excessive drill-string vibration leads to loss of the drilling process effectiveness and
premature damage to the equipment. Due to the drill-string slenderness, torsional vibration …