Data from around the world (Australia, Austria, Bahrain, Brazil, Canada, the Netherlands,
Poland, the UK and the USA) show that more than four million onshore hydrocarbon wells …

This paper focus on factors attributing to casing failure, their failure mechanism and the
resulting failure mode. The casing is a critical component in a well and the main mechanical …

A total of 101 wells in the Changning-Weiyuan shale gas play (Sichuan Basin of China) had
been drilled and stimulated by the end of March 2016, including 11 vertical wells and 90 …

Casing deformation is the most significant problem while developing Longmaxi shale gas
formation in Sichuan Basin, southwest China. In one of the operating acreages with 72 …

A series of thick-wall cylinder tests were performed on Bentheim sandstone to investigate
the nucleation and propagation of borehole breakouts. Isotropic compression tests showed …

Casing deformation is one of the common problems encountered when developing weakly
consolidated sandstone reservoirs. This study analyzes the types, causes, and influencing …

Wellbores are comprised by a steel casing surrounded by a cement sheath. The
microannulus is the typically very small annular or degraded space that may develop …

The exposure of oil wells to extreme conditions may lead to numerous problems associated
with the loss of integrity of the cement sheath. A damaged cement sheath may result in fluid …

Slip of nearly vertical faults or horizontal stratigraphic joints has provoked the shearing of at
least 16 well casings in a period of over 10 years in the Valley of Queretaro aquifer, Mexico …

The interface failure (micro-annulus and de-bonding) at the first interface between cement
sheath and formation, or at the second interface between cement sheath and casing can be …