Results 1 to 10 of about 89 (86)
Surface Casing Buckling Effect on the Wellhead Movement of a Subsea Well
Mathematical Problems in Engineering, 2022 In this work, the wellhead axial movement of a subsea well was predicted with a previously presented multi-string model modified to account for a possible buckling of the well’s surface casing. This model represented the structural casing with a nonlinear spring that considers the casing-soil interaction using t-z curves with hysteretic behavior.
Charlton O. de Souza +3 more
openaire +2 more sources
Geophysical Research Letters, Volume 50, Issue 24, 28 December 2023., 2023 Abstract Most marine gas hydrate systems follow a vertical pattern with hydrate overlying free gas. Here we document the discovery of a gas to hydrate system in a horizontal sand layer in the Qiongdongnan Basin of the South China Sea. Eight wells were drilled by the Guangzhou Marine Geological Survey in 2021–2022 to investigate the occurrence and ...
Zenggui Kuang +5 more
wiley +1 more source
Systems Engineering, Volume 26, Issue 2, Page 177-198, March 2023., 2023 Abstract This article explores conceptual modeling to support system‐level decision‐making during concept evaluation. The system‐level decisions made in the concept phases decide most of the systems' value and cost. The context for our research is the Norwegian energy domain.
Siv Engen, Gerrit Muller, Kristin Falk
wiley +1 more source
Temperature Field Study of Offshore Heavy Oil Wellbore with Coiled Tubing Gas Lift‐Assisted Lifting
Geofluids, Volume 2023, Issue 1, 2023., 2023 Offshore heavy oil resources are abundant, but they have greater difficulty and higher costs compared to onshore extraction. When crude oil flows through the seawater section, the temperature of the crude oil decreases faster, making it susceptible to solidification in the wellbore and resulting in lower well production.
Kechao Gao +11 more
wiley +1 more source
Electronics Letters, Volume 58, Issue 15, Page 597-599, July 2022., 2022 Abstract Optical and acoustic stereo imaging has great potential for the precise and consistent localization of intervention underwater robots; however, it is still being explored due to its sensing limitations and various technical challenges. This study presents a novel localization method by combining an inertial navigation system and an optical and
Jisung Park, Jinwhan Kim
wiley +1 more source
Offshore platforms as novel ecosystems: A case study from Australia’s Northwest Shelf
Ecology and Evolution, Volume 12, Issue 2, February 2022., 2022 We assessed the marine communities at the Wandoo offshore oil platform in northwest Australia, and compared these communities with natural habitats. We found that the marine community at Wandoo more closely resembles that of a natural reef than the community that would have been present prior to the installation of the platform. The Wandoo platform can
Sean van Elden +2 more
wiley +1 more source
Study on annular pressure buildup phenomenon in subsea wells considering the effect of cement
Energy Science &Engineering, Volume 10, Issue 1, Page 81-95, January 2022., 2022 This paper studied the effect of cement on annular pressure buildup (APB) and conducted experiments with a radial full‐size tri‐annuli setup to make the analysis. This work provides valuable reference and guidance for the engineering study of APB phenomena.
Hao Wang, Hui Zhang, Jun Li, Tengfei Sun
wiley +1 more source
Ecological Solutions and Evidence, Volume 2, Issue 1, January–March 2021., 2021 Harbour porpoises were attracted within a radius of 800 m of North Sea oil and gas platforms. Despite elevated underwater noise, increased prey density and 500 m fishery ban are likely to be attracting porpoise to platforms. Data provides important input for future decommissioning strategies.
Karin Tubbert Clausen +5 more
wiley +1 more source
Geofluids, Volume 2021, Issue 1, 2021., 2021 Due to the difference in oil and water density, the wellhead pressure continues to decrease with water‐cut rising in deep‐water volatile oilfields. Once it is close to the lower limit, the production well will stop flowing. This phenomenon seriously affects the production and recoverable reserves.
Botao Kang +6 more
wiley +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 This paper studies the in‐line and cross‐flow coupling vibration response characteristics of a marine viscoelastic riser subjected to two‐phase internal flow and affected by the combined effects of several parameters including the volume fraction of gas phase, sea water flow velocity, viscoelastic coefficient of the marine riser, axial tension ...
Xueping Chang +4 more
wiley +1 more source