A surface section of the Fatha Formation (Middle Miocene) was studied in the Shaqlawa
area, Erbil, Northern Iraq. It consists of siliciclastic silt, evaporates, and carbonates in a …

The Nahr Umr Formation (Albian) was studied in the Rumaila oil field, southern Iraq. It
consists of sandstone with high porosity and permeability, and contains a few shale overlaps …

he Mishrif Formation is an important succession that was deposited during the Cenomanian–
Early Turonian. More than 79 thin sections of core in addition to well log data for the Mishrif …

Tanuma and Zubair formations are known as the most problematic intervals in Zubair
Oilfield, and they cause wellbore instability due to possible shale-fluid interaction. It causes …

The Mishrif Formation is among southern Iraq's most important reservoirs, which contains a
third of the oil in the Cretaceous reservoirs, which is a broad carbonaceous succession in …

Drilling fluid is one of the crucial parts of the drilling operation and has a significant role in
carrying rock cuttings to the surface, stabilizing the wall of the borehole and controlling …

Wellbore instability has become an increasing concern for horizontal and extended-reach
wells, especially through shale cap rocks. This paper presents a comprehensive analysis of …

The oil and gas industry, wellbore instability plays an important role in financial losses and
stops the operations while the drilling which leads to extra time known as non-productive …

The Nahr Umr Formation, which is Albian-Early Turonian in age, was investigated in the
Nahr Umr Formation succession at two wells of the Luhais oil field in southern Iraq. The …

The Cretaceous period is renowned for the substantial oil reservoirs that were deposited
during the Barremian epoch. The Zubair Formation is typified by sandstones, shales, and …