Study on Load Bearing Characteristics of Novel Expandable Deepwater Drilling Conductor Based on Laboratory Experiment and Field Test

Zhang, Minghe; Yang, Jin; Yang, Yuxiang; Xu, Dongsheng; Zhou, Yisu

doi:10.1007/s13344-023-0002-x

Cited by 1 publication

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, some scholars, taking into account the characteristics of deepwater environmental loads and the operational conditions of unsegregated water pipes, have developed a design approach primarily based on axial static loads. This approach focuses on the static strength design and dynamic verification of the deepwater unsegregated water pipe descent riser, leading to the acquisition of certain regular insights [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Load Calculation and Strength Analysis of the Deepwater Landing Drill Pipe-Lowering Operation

He,

Wang,

Wang

et al. 2024

Energies

View full text Add to dashboard Cite

A landing string is directly exposed to seawater and subjected to significant stresses and complex deformations due to environmental loads such as wind, waves, and ocean currents during the phase in which the drill string carries the casing to the wellhead. Meanwhile, as the water depth increases, the weight of the drill string increases, leading to an increase in the tensile loads borne by the drill string, which can easily cause a risk of failure. Therefore, a quasi-static load calculation model for the deepwater insertion of the pipe column was established. Using the Ansys platform, simulations were conducted for average wind, wave, and ocean current conditions during different months throughout the year. The ultimate loads and stress distributions of the string were derived from theoretical analyses and numerical simulations for different operational sea states, and the suggested safe operating window and desired BOP trolley restraining reaction force for landing strings’ lowering are given according to the existing industry standards. The research findings can help in identifying the potential risks and failure modes of the deepwater landing string under different working conditions.

show abstract

Section: Introductionmentioning

confidence: 99%