Immense oil and gas reserves exist in the deepwater of the South China Sea, and the first
priority for implementing successful drilling and completion operations without reservoir …

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 …

Biopolymers are potential flooding agents that can tolerate high temperatures and salinity.
The screening of biopolymers has always followed the same rules based on viscosity and …

Significant formation damage can occur during drilling operations because of the invasion of
drilling fluid fines and filtrates that lead to pore blocking and saturation alteration …

Hydroxyethyl cellulose (HEC) is widely used in water‐base drilling fluid as tackifier because
of its good fluidity, stability, prop‐carrying capacity, and good reservoir protection, while it …

The “Smear Effect” observed during a casing-while-drilling operation helps reduce lost
circulation, provides wellbore strengthening, and improves the fracture gradient so we can …

Bentonite is a clay widely used–among others–as a low-cost additive in the drilling fluids to
impart the desired plastic rheological properties to the mud. As drilling progresses, the clay …

Las operaciones de perforación para la extracción de recursos naturales como el petróleo y
el gas suelen estar acompañadas de grandes retos y problemáticas debido al cambio de …

The formation damage caused by drilling fluid invasion around the wellbore reduces well
productivity and changes the reservoir's original characteristics. In this context, drilling fluids …