... Abstract This paper proposes an alternative design of small wellhead platforms in shallow water that require permanent manning due to operational requirements. The proposed structure is a combination of two monopods of moderate diameter (54″) connected rigidly by structural members. Multiple...

... in operations in the North Sea and other locations around the world to mitigate wellhead fatigue. In Brazil, it was proposed to enable the use of dynamically positioned (DP) drilling rigs in shallow waters, where the loads imposed by the riser-BOP on the wellhead during a drift-off/drive-off event...

... This paper presents the design challenges encountered in a flexible riser application with an external turret moored FSO in a shallow water depth around 55m, and the solutions obtained for an improved lazy wave flexible riser system. Extensive dynamic analyses were performed with parametric...

... Abstract This paper presents the technical analysis, simulation and work carried out in planning and executing an open sea workover riser operation for decommissioning a well from a dynamically positioned (DP) vessel in shallow waters, on southeastern Brazil. The main challenge in using a DP...

... Abstract Most drilling operations in deep water are performed in Dynamic Positioning (DP) mode. In harsh environments and shallow water conditions, thruster assisted position mooring configurations are often the preferred choice as the mooring lines provide an extra help to counteract...

... methodology. However, this method is limited in obstructed areas or in areas with very shallow water where streamer vessels cannot be used. We present two field tests of autonomous marine vehicles (AMVs) equipped with 3D seismic sensor arrays to record marine seismic data concurrently with OBC seismic...

... For oil and gas development projects in shallow waters in the tropic areas the water temperature is usually high (above 16°C all year around). Low fluid temperature is possible during operations due to Joule-Thompson cooling in early life when reservoir pressure is high. The nature of hydrate...

... We present a seismic processing workflow that significantly improves subsurface images of hydrocarbon targets in shallow water. Our workflow is dependent on an integrated velocity model building toolkit, which works well for salt geometry and sediment velocity model building. The workflow...

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... shallow water free surface elevation horizontal load otc 24146 subsea system offshore structure relative height solitary wave wave impact vertical load wave crest upstream oil & gas interaction runup wave theory wave height analytical result wave loading peak load...

... shallow water calculation boundary condition loading cargo configuration subsea system operation boundary floating production system fpso upstream oil & gas htv offshore discharge operation discharge operation otc 23329 deadweight capacity hydrodynamic behavior offshore...

... Abstract Shallow water mooring for an FPSO system is a challenge for offshore engineers.TUMSAS - Turret Mooring with Self Adjusting Stiffness system is invented toprovide a new and effective solution. The work presented here includes thedevelopment of TUMSAS and supporting model tests results...

... percent of shipwrecks in shallow and deep waters, combined, have wooden hulls. In shallow water the proportion of wooden shipwrecks is 9 percent, and in deep water it is 23 percent. Thirty-one wrecks, all of which are visible on sonar, are confirmed as metal by the BOEMRE database. Another 60 are presumed...

... equipment and practices developed for shallow water are applied to deepwater environments. The paper will review the elements of deepwater mooring with particular reference to the integrity of deepwater mooring connectors and the excessive complexity of mooring line interconnectivity, resulting...

... OTC 20578 Challenges of Flexible Riser Systems in Shallow Waters D. Hanonge, Technip; and A. Luppi, SEAL Engineering SA. Copyright 2010, Offshore Technology Conference This paper was prepared for presentation at the 2010 Offshore Technology Conference held in Houston, Texas, USA, 3 6 May 2010...

... or EM) technology for shallow water marine pipelines. Introduction: Conventional pipeline engineering surveys collect high-density, high-resolution information to characterize the seabed and sub-seabed environment. Typical survey goals include: establish seafloor morphology, establish the seabed...

... satisfied for most parts of the mooring systems in deep water. However, this is not the case for LNG terminals moored in shallow water. Unlike the Newman approximation, the FullQTF formulation to compute the low frequency wave loads is more accurate but requires much longer time of computation, which...

... dissimilar habitats in shallow water. Deep patterns of zonation, diversity, and abundance are all different than encountered in shallow water. Settling of shallow regulations drew heavily from considerable prior factual and conceptual information as well as an established pattern of usage. By contrast...

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... facilites with some types of damage not anticipated. The shallow water facilities dominated by fixed platforms exhibited much more damage, not unexpected, than did the deepwater facilities. The relatively good performance of the deepwater facilities will be highlighted here with an overview the damage...