Swab and surge pressure fluctuations are decisive during drilling for oil. The axial
movement of the pipe in the wellbore causes pressure fluctuations in wellbore fluid; these …

The drilling industry has substantially improved performance based on knowledge from
physics-based, statistical, and empirical models of components and systems. However, most …

Assurance of well integrity is critical and important in all stages of operation of oil and gas
reservoirs. In this study, well integrity is modeled during casing and cementing operations …

Drilling fluids having a few ecological footprints are extremely desirable, particularly for
drilling in the highly complex shale formation zone. In the current work, an anionic surfactant …

The loadings which act on the wellbore are more frequently dynamic than static, such as the
surge/swab pressure caused by tripping operations. The changing rate of loading could …

At harsh conditions of high pressure high temperature (HPHT), polymers undergo thermal
degradation leading to serious loss in fluid rheological and filtration properties …

The aim of this paper is to present a new numerical model to study the drilling fluid flow
through eccentric annulus during tripping operations and to investigate the effect of the …

Drilling operations are the major cost factor for the oil industry. Appropriately designed
operations are essential for successful drilling. Optimized drilling operations also enhance …

Surge and swab pressures can be generated in different stages of well construction
including tripping operations and reciprocation of drillstring in the wellbore. Significant surge …

Drilling muds with less environmental impact are highly desired over conventional diesel-
based mud systems, especially in light of the emerging strict environmental laws. In this …