Combined Effects of Wellbore Curvature, Connector, and Friction Force on Tubular Buckling Behaviors
- Wenjun Huang (China University of Petroleum, Beijing) | Deli Gao (China University of Petroleum, Beijing)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- May 2019
- Document Type
- Journal Paper
- 2019.Society of Petroleum Engineers
- connector, wellbore curvature, friction force, tubular string, helical buckling
- 17 in the last 30 days
- 67 since 2007
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A tubular buckling model is built, while considering the combined effects of wellbore curvature, tubular connector, and friction force. On the basis of certain assumptions, the expressions of critical helical-buckling loads are deduced with the equivalent beam-column model and energy method and the amendment factors of critical buckling loads because of relevant factors are obtained. The results from the new model are compared with those from previous models and experiments. The roles of relevant factors in tubular mechanical behaviors are discussed. It is indicated that wellbore curvature affects equivalent tubular-string weight, the connectors affect potential energy, and friction force leads to dissipative energy in the buckling-initiation process. Critical helical-buckling loads are most likely underestimated if the combined effects are not considered.
|File Size||640 KB||Number of Pages||14|
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