Wellbore leakage is complicated to understand due to the range of potential leakage
pathways and uncertainties regarding their capacities. In this study we present a novel …

In this experimental study, two different cementitious materials, including (i) a class of
expansive cement currently used for plug and abandonment (P&A) operations and (ii) a non …

The loss of well integrity in oil and gas and CO 2 injection wells provokes leaks that
potentially pollute underground water reservoirs and the surrounding environment. The …

Cement sheath interfaces, which are potential gas leakage channels, play an important role
in the safe operation of salt cavern underground gas storage (UGS) because the wellbore …

Methane gas leaks from shallow gas zone have been reported in some areas in the North
Sea. In the North Sea, shallow gas zones can have temperatures below 25° C with relatively …

Wellbore leakage, which indicates a failure to provide hydraulic isolation downhole, is an
issue facing many wells currently in production in BC. Wellbore leakage is a complex issue …

Izbash's law, which has a simpler form and exhibits narrower variations of coefficients than
Forchheimer's law, has been successfully used to describe nonlinear flow in rough fractures …

Maintaining sealing integrity of cement sheath is essential to oil and gas well completion.
The development of large-scale hydraulic fracturing reservoir stimulation technology in …

The long-term durability of the wellbore system has become an important topic in recent
decades. Specifically in a CO 2 underground storage system, both the ingress of chloride …

The integrity of cement–salt rock interfaces (CSI) in salt cavern gas storage wells may be
damaged during circulating gas injection, production, and long-term gas pressure …