2004•Journal of Jianghan Petroleum InstituteRequires access
Factors of Fracturing Influencing on Casing Failure
Shuqing Chen
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Abstract
A 3D simulating model for calculating casing in fracturing wells is established based on the casing force-summing analysis. The laws of casing stress changes caused by inner casing pressure changes are calculated by simulation. According to the calculation the factors of fracturing influencing on casing failure are analyzed. It is considered that the casing failure is the result of combined action caused by many factors. Through analyzing the data of casing failure wells, the causes of casing failure in the fracturing wells are compared analytically, by which theoretical bases are provided for preventing casing failure under special operation condition.