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 …

Research on down-hole tubular mechanics has been more than 70 years so far. Many
breakthrough research results have been obtained, and they have been successfully …

关于井下管柱力学的研究迄今已有七十多年的历程, 取得了许多重要的研究成果,
并主要在油气井工程中获应用实效. 然而, 由于井眼约束和作业工况的复杂性 …

Drilling automation is the control of the drilling process by automatic means, ultimately
reducing human intervention to a minimum. The concept of automating the drilling process …

Drilling operations for oil or gas wells are very expensive. Optimizing the drilling efficiency
and increasing the rate of penetration (ROP) will reduce the overall cost of the drilling …

The process of drilling a borehole is very complex, involving surface and downhole drilling
systems, which interact with the drilling fluid and the surrounding rocks. Modeling and …

A real-time method is presented to predict impending stuck pipe with sufficient warning to
prevent it. The new method uses automated analysis of real-time modeling coupled with real …

Running casing in extended-reach well (ERW) can be extremely difficult because of high
drags. Once running casing is hindered by high drags, a special operation, aggressively …

The drilling industry has substantially improved performance based on knowledge from
physics-based, statistical, and empirical models of components and systems. However, most …

The high friction of a drill string against a wellbore is a concern during directional and
horizontal drilling. An axial oscillation tool (AOT) is typically used to reduce drag and torque …