Long term assurance of the integrity of wellbores is a key objective in well designs. Over
long periods of time, subsurface reactions are inevitable and could compromise the integrity …

Leakage is one of the most serious challenges for the safe production of high‐pressure gas
wells for its high risks, including abnormal annular pressure, natural gas accumulation, and …

Abstract Sustained Casing Pressure (SCP) has become a serious problem in the
development of shale gas fields, which is believed to relate to the multistage fracturing …

Sustained annular pressure caused by tubing leakage seriously threatens the safe
production of deep gas wells. Therefore, it is necessary to fully understand the …

Volume fracturing of shale gas wells has been observed to lead to the failure of cement
sheath and to sustained casing pressure (SCP). This paper presents a new numerical …

In HPHT gas wells, thermal expansion annulus pressure might threaten the mechanical
integrity of the cement sheath. To analyze the effect of the thermal expansion annulus …

In shale gas development, the problem of sustained casing pressure has become more and
more prominent. A major cause of sustained casing pressure is the debonding of cement …

Tubing leakage is one of the main reasons to cause annular pressure in HPHT gas wells.
This kind of annular pressure is called “sustained” because it is long-lasting and can not be …

Sustained Casing Pressure (SCP) is a condition in oil and gas wells where continuous
pressure buildup in the well casing over a long period of time occurs. Several factors might …

Gas migration behind casings can occur in wells where the annular cement barrier fails to
provide adequate zonal isolation. A direct consequence of gas migration is annular pressure …