Nanotechnology remains a relatively new innovation for the oil and gas industry. However,
many applications have now become an integral part of some of its key technological …

When drilling in fractured oil and gas formations, drilling fluid loss is prevalent, and polymer
gels are commonly utilized as lost circulation materials to plug fractures in loss zones. A high …

In deep geological drilling processes, the geological environment becomes more complex
with the increasing of the drilling depth; consequently, the risks of downhole incidents get …

Oil and gas operators worldwide are expecting service companies to deliver integrated
techniques to minimize, if not prevent, drilling problems. Drilling fluids perform vital functions …

Lost circulation (LC) is a serious problem in drilling operations, as it increases
nonproductive time and costs. It can occur due to various complex factors, such as …

One major obstacle in well construction and drilling is the problem of lost circulation. Large
amounts of non-productive time (NPT) are caused by the unintentional flow of fluids into the …

Lost circulation is a common problem during drilling and completion, and it contributes much
to the nonproductive time of the operation. The Brazilian pre-salt is composed of highly …

Numerous wells worldwide encounter significant, costly, and time-consuming lost circulation
issues during drilling or while deploying tubulars across naturally fractured or induced …

During the drilling process, the complicated geological environment makes drilling
operations more difficult as the drilling depth increases, leading to a greater susceptibility to …

The friction coefficient of lost circulating materials (LCMs) and rock is a key parameter to
determine the stability of the plugging zone in the lost circulation control. However, the …