... considerations include the increased thermal conductivity of the water-saturated seabed compared to dry land and the need to isolate the instruments from noise generated by water currents. Based on these concerns, the experience of the operator's work developing torpedo anchor systems ( O'Laoughlin, Randolph...

... system in hole can lead to distractions and complacency resulting in injuries due to lack of focus. The system can prevent failed runs and reduced trips with its combination of redundant activated anchor and mill to whipstock interface, the anchor being configurable in either hydraulic or annular...

... Abstract BOP tethering is a system installed around the wellhead with the purpose of stabilizing laterally the top of the BOP Stack through the action of cables, anchors, and other devices. This system, which significantly reduces loads on the wellhead, have been used in the last decade...

... for future opportunities. During the operations, many opportunities for improvement were identified, such as: the ideal drilling schedule to launch the anchors with the Anchor Handling Tug Supply Vessel (AHTS); the imprisonment of the cables by the cement of the surface casing in the mud line; the knots...

... Abstract This paper presents the mooring system supply and management model and the design of anchors for a semi-commercial Floating Offshore Wind Farm (FOWF): WindFloat Atlantic. A Project Management and Engineering (PME) model has been developed and employed for effective delivery of various...

... Abstract Suction embedded plate anchors (SEPLAs) are an economic solution for the mooring system of a floating production platform and have been deployed both in the Gulf of Mexico (GoM) and around the globe with excellent field performance records. The design of SEPLAs has gradually matured...

... much smaller. As the industry ramps up to projects with as many as 30 or more turbines and turbines as large as 15 MW, mooring system designs must evolve to meet the demands for efficiency and high load capacity. Supply-chain demands for hundreds of mooring legs and anchors per project must...

...) of both substation platforms for a 200 MW farm is estimated by including the electrical substation, platform hull, mooring lines, anchors, integration, installation and commissioning costs. Installed CAPEX costs of the platforms show that the semi-type substation platform cost is lower than the TLP-type...

... down and ramp up operations Several mitigation measures for pipeline walking as a results of these mechanisms have been developed and studied over the years with the most common being the use of hold-back anchors installed either at the middle or the end of a pipeline, the latter being...

... Abstract An anchor penetration model is an important aspect of a cable burial risk assessment as the model is there to predict the depth a given anchor will penetrate to, once deployed. There are a number of variables that influence the penetration depth of anchor, which are as follows: Anchor...

... Abstract As development concepts for the Johan Castberg Field matured, new locations required soil data. A harder layer has been identified from previous soil data and mapped on seismic profiles as Seismic Unit II. This layer may cause refusal of suction anchor penetration and should ideally...

... anchoring, the paper also attempts at showing this concept could be used more extensively in full field developments. Indeed, the novel approach proposed in this paper opens the door to a completely novel collaboration model between contractors and operators, establishing continuity of construction during...

... Hansteen marine operations. offshore technology conference offshore marine operation platform upstream oil & gas scr mooring system steel catenary riser inshore spar fpso subsea system pull-in winch installation anchor water depth flowline operation requirement marine operation...

... It is now recognized that seabed trenching in taut deep water moorings can reach the suction anchor and the chain padeye depth, with the safety of the mooring system becoming a concern. However, the actual formation of such trenches and their development with time are still largely unknown...

... Abstract Recently there has been significant interest in the development of seabed trenches associated with anchor chains in front of suction anchors. The issue was first highlighted by Bhattacharjee et al . (2014 ) in relation to the Serpentina FPSO located offshore Equatorial Guinea...

... Abstract An analytical methodology for estimating walking anchor force is presented. Currently, anchor force calculation requires substantial FEA which is not compatible with early phase design schedules. At such stage, anchor force is typically assumed to correspond to full pipeline length...

... Abstract This paper proposes a novel dynamically installed ‘fish’ anchor, adopting a geometry taken from nature, for economic and safer tethering of floating facilities in deep water. Every cross section of the fish anchor shaft is elliptical, leading to very low drag resistance during free...

... This paper presents the development and the testing of a new anchor for hard seabed conditions. The anchor development involved computer modelling, laboratory scale model testing, and eventually the full scale anchor testing offshore. The goal of the development was to expand the suitability...

... pulling assembly enables operations to overcome these limitations and increase efficiencies. The hydraulic-activated assembly uses a pressure differential to anchor into the casing above the section to be removed while pulling as much as 1.8 million pounds through a casing spear that is engaged in the cut...

... or conservatism as the renewable industry moves forward with the installation of offshore energy converters. anchor mec consequence class ocean energy tidal current offshore technology conference oil and gas renewable energy selection return period application installation requirement anchor...