In modern deep well and extended-reach drilling operations, “stick-slip” type intense torsional vibration remains one of the main causes of increased non-productive time (NPT) and failure of downhole tools. When the bit becomes stuck intermittently and suddenly released downhole (i.e., alternating between “stick” and “slip”), it generates destructive torque peaks that can damage PDC cutters…
Well logging is critical in oil and gas drilling. It gives teams data about what lies below the ground. That includes rock types, how hard the rocks are, how fluids are spread out, and what the wellbore conditions look like. While drilling is underway, crews have to choose the drilling path and drilling pace. They…
With the increasing popularity of clustered well drilling and multi-branch well development in modern oil and gas operations, the underground space has become increasingly crowded and its complexity has reached an unprecedented level. Relying solely on pre-drilling static trajectory models is no longer sufficient to prevent catastrophic wellbore collisions. This article explores a variety of…
Oil transportation across long distances before it reaches consumers. That process links oil fields, refineries, storage sites and end users. However, crude and finished oil don’t transport without risk. Pipelines, tank trucks, rail tank cars, and oil tankers all carry their own hazards. Equipment failures, human errors, poor maintenance, and accidents can cause oil spills. When…
Establishing a petroleum engineering training center requires a reasonable allocation of simulation systems, teaching tools, and supporting facilities. The required equipment depends on the training objectives, the size of the trainees, the available space, and the budget. For universities, vocational schools, and oil and gas enterprises, the key equipment usually includes drilling simulators, well control…
The equivalent circulating density (ECD) is an important parameter in drilling operations as it reflects the effective density of the drilling fluid as it circulates within the wellbore. Unlike the static mud density, ECD takes into account the additional pressure generated by friction when the drilling fluid flows through the annulus. Mastering the methods for calculating,…
Oil transportation is a key link in the world energy system. It moves oil from fields to refineries, then to storage sites, ports, and finally to end users. Crude and finished fuels can travel by pipeline, ship, train, or truck. Transportation efficiency and safety directly affect operating costs, delivery reliability, environmental protection, and overall supply…
A fire on an oil drilling platform can escalate rapidly within seconds. Flames, smoke, toxic gases, equipment failures, and high-pressure systems can all turn an initially manageable incident into a life-threatening emergency. For oil and gas companies, effective emergency preparedness is not just about creating a paper-based emergency plan. Relevant personnel must possess skills such…
Improving oil and gas production efficiency is now a key target for many operators. The aim is to get more output, spend less on daily work, and keep oil and gas assets producing longer. As reservoirs age, problems during production often get harder. Because of that, companies lean more on advanced technologies, optimized workflows, and…
In the process of stratigraphic evaluation, gamma-ray (GR) logging is a commonly used method for quickly identifying rock types and determining changes in shale content. However, when interpreting the logging curves, it should not be simply assumed that “high GR values indicate shale and low GR values indicate sandstone”. More importantly, what geological features do the…