Conventional drilling fluid (DF) technologies commonly fail to meet many of the
requirements of modern drilling under various harsh subsurface conditions, particularly …

The number of deep wells and ultra-deep wells drilled worldwide is gradually increasing,
and the problem of deep well leakage has become one of the challenges in drilling. The …

Loss circulation is one of the major concerns in drilling and well construction. The
uncontrolled flow of fluids into formation while drilling or primary cementing lead to …

Background: Open Access Editor's Choice Review Polymer Gels Used in Oil–Gas Drilling
and Production Engineering by **liang Han 1, 2, **sheng Sun 1,*, Kaihe Lv 1, **gbin …

Research progress of self-healing hydrogels based on both reversible covalent and
reversible non-covalent bonds are systematically reviewed. The preparation methods …

One of the most challenging issues during drilling operations is lost circulation, which can
cause several problems that could lead to increasing the non-productive time (NPT) and …

Drilling fluid loss in fractured formations hinders the progress of oil and gas exploration and
its development worldwide. Improving the success rate of lost circulation control in fractured …

This research presents a comprehensive review of lost circulation and wellbore instability
challenges in geothermal drilling, complemented by an original case study demonstrating …

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 …

The viscosity of cement slurry decreases when the temperature rises, resulting in bleeding
and sedimentation issues caused by high temperatures. The available viscosity modifying …