Abstract: A deep water high capacity anchoring system in which the fixing of an anchor structure under compact layers of ocean soil is reached by jetting fluid in rising directions and, simultaneously in a radial and/or perpendicular direction to the external surfaces of said anchor structure injected from its lower extremity, thus guaranteeing anchoring of large size floating structures, related to the petroleum industry, such as stationary production units and oil drilling platforms.

Abstract: An apparatus and method for pre-installation of a petroleum wellhead on the seabed. The apparatus includes two principal components: a wellhead (1) and a ballast tube (9). The wellhead includes a tube in which are fixed guide fins (3) and structural fins (8). The ballast tube (9) includes a tube with a holding member (12) for its recovery after the wellhead (1) has been fixed on the seabed. The ballast tube (9) is placed inside the wellhead (1) and the assembly is launched towards the seabed, being embedded in it by the inherent weight of the assembly. After the wellhead (1) has been fixed, the ballast tube (9) is raised to the surface.

Abstract: A foundation system for tension leg platforms without use of foundation templates, wherein each tendon (5) is directly connected to a socket (9) inside the pile (8), said piles (8) being positioned for driving purpose by means of a pile-driving template (10) which is employed as a spacing device is described. The pile-driving template (10) is positioned with the aid of pins (11) that slot into guides (7) built into the well template (6). After the groups of piles (8) needed to anchor a corner of the platform (1) have been driven in, the pile-driving template (10) is withdrawn and repositioned so as to enable the piles for the other group of legs to be driven; this process continues until all of the pile-driving is finished. Alternatively one single pile-driving template (16) may be employed to guide the driving of all the piles (8) thus doing away with the need to reposition the template every time.

Abstract: A pile for anchoring a floating structure in deep water includes an elongated body provided with a tapered pointed tip at the lower end thereof and a closure disc at the upper end thereof. A plurality of radially and axially extending fins are secured to the pile adjacent the upper end thereof. The elongated body of the pile is filled with material having a high specific gravity distributed in such a manner that the center of gravity of the pile is located well below its center of buoyancy. The process for installing the pile uses the potential energy generated by the free fall of the pile from a vessel in order to ensure that the pile penetrates the ocean floor.