Heavy-weight materials such as barite (BaSO 4) is used in mud formulations to increase
density. In deeper formations where a higher hydrostatic pressure of the mud column is …

Drilling in deep unconventional shale formations is one of the most complex and
challenging tasks. The success of the drilling operation in these formations is greatly reliant …

The ester-based drilling fluids has been emerged as an alternative to diesel and mineral oil-
based drilling fluids and are preferred due to their high biodegradability and low toxicity. In …

The oil-based mud is preferred to drill highly technical and challenging formations due to its
superior performance. However, the inadequate chemical and thermal stability of …

The effect of barite particle mass fraction and of particle size distribution on the settling and
sag potential in oil-based drilling fluid samples is investigated for four fluids with densities of …

In the processes of oil and gas drilling, gas easily invades wellbores and adversely
influences the safety in high-pressure gas reservoir drilling activities. In this study, a polymer …

Drilling fluids for oilfield use consist of complex mixtures of natural and synthetic materials.
The viscous properties along with the particle size distribution of the applied weight …

This study focuses on developing an efficient and environment-friendly drilling fluid using
biodiesel as an alternative to the conventional diesel-based drilling fluid for drilling highly …

The occurrence of barite sag in drilling fluids has relatively often been the cause for gas
kicks in oilwell drilling. The subsequent absorption of gas into drilling fluid could lower the …

In this paper, we present the results of the rheometric properties of a guar-based fracturing
fluid containing amino-acid clay stabilizers. Four amino acids, glycine, proline, alanine, and …