The conventional design configuration of nested liners does not always allow for meeting the Bureau of Ocean Energy Management, Regulation, and Enforcement’s worst-case-discharge (WCD) criteria, and the long-string configuration presents operational limitations. Tieback casings and liners, on the other hand, enable reaching the well objective while meeting the WCD criteria. However, tieback casings and liners present several operational challenges during the well-construction phase. This paper focuses on cementing-design challenges and discusses the engineering techniques used to approach them.
Well-Construction Design Changes
To meet WCD criteria, existing well-construction designs for the deepwater Gulf of Mexico must be modified significantly.
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