During large-scale multistage hydraulic fracturing in shale-gas wells, the cement sheath
loses its integrity easily because of repeated temperature and pressure variations in the …

Cement sheaths are among the most important barrier elements in petroleum wells.
However, the cement may lose its integrity due to repeated pressure variations in the …

During large-scale hydraulic fracturing in shale gas horizontal wells, a cement sheath easily
loses its integrity due to the fluctuation and continuous change of wellbore temperature and …

Cement sheaths undergo extreme loading conditions in wells during subsurface operations.
A damaged cement sheath may lead to fluid communication between different formation …

Debonding at the cement-casing interface is recognized as a principal failure mechanism
leading to CO 2 leakage in wells. This detachment gives rise to a microannulus, which …

Leakages of greenhouse gases, such as methane and carbon dioxide from wells, may have
considerable environmental consequences. Although much emphasis is currently put on …

Cement sheaths are among the most important well barrier elements and cement sheath
integrity is thus important to maintain zonal isolation. Repeated pressure cycling in a well …

In recent years (and for years to come), tremendous attention has been given to the integrity
of thousands of wells drilled around the world for different purposes ranging from oil and gas …

页岩气井大规模水力压裂过程中, 因井筒内的温度, 压力波动及持续变化, 循环加卸载引发的水泥
环完整性问题将威胁到井筒的完整性. 为了弄清强交变热载荷下水泥环完整性失效机理 …

Oilfield wellbore integrity relies on a good well cement formulation, placement, and
resistance to solicitations when aging, either due to chemical or stress changes …