... Abstract The Prelude FLNG facility anchoring system is based on a turret with 16 anchor legs, each connected to driven anchor piles in generally very weak and variable carbonate soils. Driven piles have a chequered history offshore Australia, due to the very low skin friction that is typically...

... mooring system within the targeted boundary conditions. Introduction In the summer of 1998, an equally spaced 8 line mooring system consisting of studless chain, unsheathed spiral strand wire rope and impact driven anchor piles was installed at the Pierce Field (blocks 23/22a and 23/27 UKCS), central...

... conference prediction anchor pile OTC 23232 Improved Pile Driving Predictions in Carbonate Soils and Rock P. Brunning, Subsea 7, Singapore B. Ishak, SapuraAcergy, Kuala Lumpur Copyright 2012, Offshore Technology Conference This paper was prepared for presentation at the Offshore Technology Conference...

.... This was crucial because at the time of design it was not known which vessel(s) would install and hookup the mooring system. The end result was a mooring design that consisted of a twelve (12) point chain-polyester-chain semi-taut leg system where each mooring line is terminated with a driven anchor pile. H-link...

... of anchoring system for an FPSO. The anchoring system consists of few short to medium length (typically 15 to 25m) large diameter anchor piles, as shown in Figure 1. These piles experience the greatest combination of loading during the design storm, which represents the critical case for design. Typically...

... routinely used to provide detailed characterization of deepwater development sites. This paper describes the use and advantages of an AUV survey for effi- ciently and effectively characterizing details of shallow geol- ogy and soil stratification at proposed deepwater anchor-pile locations. Specifically...

... Abstract This paper will discuss a new design method (termed the CHIPPER method) that has been specially developed to assess the performance of laterally loaded anchor piles in soft rock (both carbonate and non-carbonate). The theoretical basis for the model will be presented along...

... compressive loads. For the most part, three distinct technologies are currently used in these new, uncharted waters, gaining more experience and confidence in their versatility and capacity; namely slender anchor piles, suction piles and Vertically Loaded Anchors (VLAs). This paper gives a snapshot...

.... Only minor DP equipment problems were experienced throughout the guying system installation. A long-baseline acoustic positioning system was used to measure the positions of the anchor piles, clump weights, and jacket during the Lena installation. The system provided relative position measurement...

... at each of the four corners of the jacket to resist base torque and shear loads. project team contractor strategic planning and management anchor pile guyed tower diameter guyline exxon company seafloor upstream oil & gas installation engineer construction supervisor water depth...

... ABSTRACT The guying system is the feature that most distinguishes the Lena guyed tower from a conventional fixed-bottom platform. Special equipment and procedures were required to handle and place 6-foot diameter anchor piles, 200-ton clump weights, and both 5-inch and 5 3/8-inch diameter...

... Summary This paper describes the design and installation of twelve large capacity suction anchor piles in the North Sea. Innovative both in concept and design, these piles were the first commercial application of the suction pile principle and its success proves that the suction on pi 1e...

... ABSTRACT The suction pile has proved to be an attractive alternative to a driven-in or drilled-in anchor pile or a gravity block and is intended to serve as a fixed seabed mooring point for floating platforms and surface buoys. The suction pile consists of a hollow steel cylinder with closed...

... anchor pile mooring system around the platform. PART ONE - DESIGN System Description. Eight anchor piles are positioned symmetrically around the Piper A platform so that they provide a suitable anchor pattern for a multiple service Construction Vessel to moor up alongside the platform in 'periods...

... suitable for subsea anchor piles. A "Puppet System" makes use of an underwater Hydroblok hammer. The system allows also the largest Hydroblok hammer to be used in combination with a very large pile. The hammer carries the pile during its downward travel from the surface vessel. It is a temporary...

... ABSTRACT Unique marine equipment and operating procedures were involved in the construction of the Cognac platform. A semi-permanent mooring system utilizing spring buoys and buried anchor piles was employed to control the derrick barges. The design and installation of the mooring system using...