There is an upcoming" P&A wave" of wells that need to be permanently plugged and
abandoned, especially in mature, offshore areas such as the North Sea and Gulf of Mexico …

The cuttings transport efficiency of various drilling fluids has been studied in several
approaches. This is an important aspect, since hole cleaning is often a bottleneck in well …

Barite settling in the annulus behind the casing is an undesired yet common occurrence
during the life of a well. Over time, the drilling fluid left in the annulus settles, leaving behind …

Barite is added to drilling fluids as weight material to increase its density. Over time, when
the drilling fluids are left static in the annulus, gravitational forces will make the barite settle …

The focus on permanent Plug and Abandonment (P&A) has increased the last few years,
due to aging infrastructure of many of the fields on the Norwegian Continental Shelf (NCS) …

Drilling and completion fluids (muds) are complex suspensions that typically contain weight
material (such as barite) to increase the density, and clay particles to increase the viscosity …

Wells are essential in oil and gas production and construction of them is one of the main cost
drivers for field development. It is normally needed to drill and construct new wells from …

During the lifetime of an oil or gas well, the weighting material, barite, will eventually settle
out. Viscoelastic measurements of such laboratory barite sediments from a bentonite mud …

As more and more wells reach the end of their production life, the focus on permanent plug
and abandonment has increased in interest. Cost-efficient abandonment of wells with …