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Borehole collapse during drilling operations in shale formations is a well-known and costly problem within the petroleum industry. Recently it has become evident that shales may also form sealing barriers around the casing, reducing the need for cement jobs on new wells, and reducing costs for...

Water-flooding is a widely used technique for pressure maintenance or improving sweep efficiency. Incremental recovery of water-flooding ranges from 15 to 25%. Nonetheless, water-flooding is an energy-intensive activity. Water injection systems typically consume 30 to 50% of field total power...

To investigate the effects of wettability on multiphase flow in porous media, glass bead packs or micromodels are commonly used. Their wettability can be altered by the surface treatment method–silanization. Although silanization is widely used for glass wettability modification, comparable...

Fluid production from or injection into a subsurface reservoir leads to stress pressure changes inside and outside the reservoir. The overburden often consists of low permeability shale, and the undrained pore pressure response may be estimated from Skempton’s empirical equations. The key parameters...

Pore pressure reduction, caused by reservoir fluid production, will alter the stresses in the vicinity of a producer. These stress alterations affect the propagation of hydraulic fractures that originate e.g. during water or polymer injection into injector wells as part of enhanced oil recovery (EOR...

In many oil and gas wells, long sections of the annulus between casing and rock are left open during completion. These are potential pathways for leakage, and may need to be sealed off in critical places. In numerous field cases in shale formations it has been found that the rock has crept in and...

We present the results of the displacement flows of different Newtonian and Herschel–Bulkley non-Newtonian fluids in a new-developed eccentric Hele–Shaw cell with dynamic similarly to real field wellbore annulus during primary cementing. The possibility of tracking the interface between the fluids...

The Norwegian "Longship" full-scale carbon capture and storage (CCS) project was defined over the Norwegian Continental Shelf (NCS) following the successful Sleipner CO₂ storage operation. The Northern Lights project is part of the Longship project, responsible for transporting CO₂ captured from...