With the growth of deep drilling and the complexity of the well profile, the requirements for a
more complete and efficient exploitation of productive formations increase, which increases …

The forthcoming future of environmental protection mandates the utilization of naturally
abundant, biodegradable, sustainable and ecofriendly materials for a wide variety of …

Lost circulation in fractured formation is the first major technical problem that restricts
improvements in the quality and efficiency of oil and gas drilling engineering. Improving the …

An important aspect of hydrocarbon drilling is the usage of drilling fluids, which remove drill
cuttings and stabilize the wellbore to provide better filtration. To stabilize these properties …

Drilling fluids are the core of drilling operations, and they are responsible for many roles,
such as lubricating drill string, cooling down drilling equipment, maintaining wellbore …

Polyvinyl alcohol (PVA) and okra polysaccharide (OP) are biodegradable polymers with
high hydrophilicity and good biocompatibility with potential for use as flexible humidity …

To control the fluid loss of water-based drilling fluids (WBDFs) in salt-gypsum formations, a
nano-SiO2 graft copolymer was prepared by inverse emulsion polymerization. The polymer …

Drilling issues such as shale hydration, high-temperature tolerance, torque and drag are
often resolved by applying an appropriate drilling fluid formulation. Oil-based drilling fluid …

Drilling fluids have rheological and filtration properties, and controlling these properties is
essential for the effectiveness of the drilling process. Polymers are developing as one of the …

Drilling fluids with high suspending capacity without high viscosity are required in drilling
operations, such as horizontal wells and highly deviated wells, with the “cutting bed”. Non …