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Keywords: mudmat
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30795-MS
... expansion wallerand foundation jumper connection point startup embedment offshore technology conference upstream oil & gas installation mudmat behavior mudmat flowline piping simulation seafloor piping design proceedings line expansion mechanism interaction mudmat size...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30790-MS
...://dx.doi.org/10.1680/jgeot.16.P.137 ]. DNV CN 34 Foundations . DNVGL RP F114 Pipe-soil interaction for submarine pipelines . Feng , X. , Randolph , M.F. , Gouvernec , S. , Wallerand , R. 2014 . Design Approach for Rectangular Mudmats Under Fully Three-Dimensional Loading...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29464-MS
... focused on evaluating the direct impact loads generated by the flowing sediment mass in contact with the analyzed infrastructure component, such as a pipeline or a mudmat. In this study, the mass gravity flow impact on offshore infrastructure is addressed from a different perspective by investigating the...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-29059-MS
... is subjected to substantial lateral loads, vertical loads and overturning moments that cannot be effectively resisted by a typical shallow (mudmat) foundation. A new HSF design methodology was established and a pile head locking system was developed by the project team. This is the first offshore...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27601-MS
... Abstract Rectangular mudmat foundations for subsea structures are commonly designed according to ISO and API guidelines. However, the modern trend towards deeper waters and heavier structures is currently challenging traditional approaches to foundation design, especially in presence of...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27760-MS
... spectrum analysis ground model model analysis pipeline system deformation interaction tie-in spool offshore pipeline project definition acceptance criteria level earthquake mudmat midstream oil & gas displacement subsea structure upstream oil & gas Presentation of OTC-27760-MS...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27786-MS
... effective measures and continued expansion of offshore developments, a hybrid subsea foundation, typically consisting of a mudmat and corner pin-piles, can offer significant fabrication and installation cost savings, compared to traditional large diameter suction piles, as flowline restraint anchors. Since...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27295-MS
... is the combination of a skirted shallow foundation (so called mudmat) and pin-piles added at each corner of the mudmat. The adjunction of pin-piles increases the holding capacity of the single skirted mudmat by a factor of about 3, which falls then within the range of the anchoring forces required at...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27289-MS
..., the contribution to scour interaction from the different components is more difficult to assess. Large-scale mobile bed laboratory experiments evaluated scour for a surface laid pipeline, with a spur and valves, and a generic subsea protection structure with mudmats and a perimeter skirt. Bathymetry...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25906-MS
... system wellhead mudmat test tool drill pipe pad eye guidebase lockdown wear subsea wellhead lockdown sleeve drilling equipment drilling operation hanger protector iron roughneck upstream oil & gas conductor housing casing and cementing casing design rotary table conductor pipe...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25978-MS
... mudmat or hybrid foundation with pin piles would lead to excessive foundation sizes when axial expansions are large. Allowing the foundation to slide over the seabed as a whole could lead to a more economical solution ( Bretelle & Wallerand, 2013 ). A study has been initiated to develop a design...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25124-MS
... , OTC 19329 , 2008 . Bullock II. , J.D ,. Geertse , E.M. and Landwehr , M.M. , "Versatility in answering the Challenge of Deepwater Field Developments" , Offshore Technology Conference , OTC 21821 , 2011 . OTC-25124-MS Post-installed Mudmat Emmanuel Fontaine, and Steven...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19217-MS
... installation of two fixed jacket structures. In order to optimize project delivery a standardized design approach was employed; this included the temporary foundations. For Phase 1 and 2, temporary jacket seabed support was provided by glass fibre reinforced mudmats in each corner of the jacket base, each...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19218-MS
... template skidway upstream oil & gas mudmat construction gripper production chemistry jacket design installation configuration assembly OTC 19218 ACG Jackets Design and Fabrication Richard T. Ciezarek, Kellogg Brown and Root Energy and Chemicals; Archie M. Cormack and Allan D. Penman, BP...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18923-MS
..., 400te) and Locator Arm (LA, 275te) used together to accurately locate and drive pin piles into the seabed. Pin piles are typically used as alternatives to mudmats for temporary support of jacket structures in deep water soft clay sites, where the required mudmat area would be prohibitively large. The...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16632-MS
... mudmats. PLETs were designed with hinged mudmats for 'first-end' installation lay-away, but also had to be capable of second-end recovery to surface for repair and re-installation, if necessary. Introduction BP and its partners are developing several deepwater prospects in the Gulf of Mexico. These...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16181-MS
... Abstract "Mudmats" are large structures used to temporarily prevent offshore platforms or "jackets" from sinking into soft unconsolidated soil on the seabed. The functional life span of these mudmats is limited, as they are essentially redundant after installation of the foundation piles...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15147-MS
... considered in the analysis fordeployment are subsea trees and mudmats. These packages have very different characteristics, and it will be shown that this can have a large impact on their ability to be deployed. This study focuses primarily on deploying the equipment with rope overboard the vessel. The...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15306-MS
... soil water content to the Liquid Limit were 0.84, 0.79 and 1.19, with undrained shear strength values of 8, 6 and 4 kPa. The seafloor soils are turbidite deposits that range from sandy at the FPSO to silty clays at the wellhead locations. paragon engineering service saddle mudmat flowline...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15336-MS
... 1200 T. The combination of the J-lay tower with the two main cranes of the DCV Balder allows for handling of large structures such as PLETs and in-line sleds complete with mudmats. Maintaining its existing heavy lifting capacity results in the following main benefits: The ability to use one vessel...

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