Sentence examples for casing failure from inspiring English sources
As such, research on the factors that can prevent casing failure is necessary.
Rupture model and Fracture model for casing failure crossing fault are established by ADINA.
To alleviate or even avoid casing failure issues, proper casings should be selected to be used for well completion.
Increasing casing thickness and decreasing casing outer diameter are in favor of reducing the casing failure in shale gas wells.
Using Monte-Carlo random sampling method, a probability of casing failure with different pressure and a relationship between safety coefficient and probability of casing failure have been obtained by simulating a random distribution regularity of casing strength.
The effects of local loads and casing dimension on the casing failure are illustrated by the sensitivity analysis.
Numerical modeling is applied to analyze the mechanism of casing failures in such a formation.
The downhole observation results show that casing failures primarily occurred in unconsolidated sandstones, and were caused by sanding-induced cavities.
Land subsidence might result in different problems containing damages to linear structures, well casing failures, reduction or elimination of groundwater storages, desertification, flooding, deluging and sinkholes [21, 25].
In particular, wells in mining areas where the longwall mining technique is used for the extraction of coal could be subject of wellbore casing failures caused by substantial ground movement due to removal of the large panels.
In the absence of subsidence indications including well protrusion and casing failures, it is almost impossible to recognize occurrence of subsidence in absence of periodic ground-surface level measurements are conducted using surveying, extensometers, InSAR methods, etc. [11].
