OGJ FOCUS: Experiments illuminate reasons for casing wear

A large number of simulation tests helped determine the causes of casing wear problems in Tarim oil field.The tests determined casing wear mechanisms and the effect of wear parameters such as lateral forces, rubber protectors, antifriction agents, and drill pipe wear-resistant belts.The tests used the Maurer physical wear testing machine and related software and determined that antifriction agents could reduce and control casing wear in deep wells in Tarim oil field.Tarim casing wearTarim oil field, in western China, had experienced casing wear problems in several wells since 1989. Wells with problems included Keshen-1 and well Yangxia-1 in 1996; Yaken-3 in 1997; Kela-202 in 2000; and Que...

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