An expandable tubing (12) for a well bore hole (14) in which selected length portions (24, 26, 28) are weakened by a slot configuration (FIGS. 2, 3, 4) to obtain predetermined expansion characteristics. The slot configurations are tailored or selected for a predetermined bore hole length and may be expanded to different radial diameters to conform generally to the peripheral contour of the bore hole. Tubing portions (29) between the slotted length potions (24, 26, 28) are unweakened.

A spar platform is disclosed having a deck supported by a buoyant tank assembly having a first buoyant section connected to the deck and defining a central moonpool and a second buoyant section disposed beneath and axially vertically aligned with the first buoyant section. A buoyant section spacing structure connects the first and second buoyant sections in a manner providing a horizontally extending vertical gap therebetween and a counterweight spacing structure connects the counterweight to th...

A lightweight intervention apparatus is described for use with a single bore intervention operation and which is suitable for use with a sub-sea horizontal tree with a tree cap and integral ball valve. The lightweight intervention apparatus is adapted to be coupled to the horizontal tree and that when so coupled the integral ball valve within the tree can be actuated via the intervention apparatus and cycled between an open and a closed position. The annulus line within the horizontal tree is ad...

A pneumatic/hydraulic shoring strut is disclosed for bracing walls in various situations. The shoring strut is provided with features that allow it to be infinitely adjustable and self-locking. In a preferred embodiment, the strut contains an internal biasing member that urges contraction when pneumatic pressure is released. More particularly, the pneumatic/hydraulic shoring strut of the present invention is composed of an inner and outer cylinder which form an annular recess therebetween. The c...

An extruded sheet piling (20) is disclosed. The sheet piling has a planar body panel (22) with a top end (23) and a spaced bottom end (24). A first continuous side edge (26) and a second spaced parallel continuous side edge (27) extend between the top end and the bottom end of the body panel, respectively. A first planar flat (29) extends away from the first side edge of the body panel, and has an elongate continuous male locking member (31) formed along an outside edge (30) thereof A second spa...

A method of monitoring of the level of compaction of a soil surface undergoing compaction by an impact compactor which includes a rotatable, multi-sided compactor mass that applies periodic impact blows to the soil surface when rolled over that surface. In accordance with the invention, data related to the level of compaction of the soil surface is derived, during compaction of the soil surface, from the deceleration of the compactor mass as it impacts the soil surface. This is achieved using on...

A sea wall able to diffuse sheets of wind borne water being blown over the sea wall by a strong wind. The sea wall has a vertically extending barrier, preferably topped by a cap, and wind diverting member mounted above the uppermost surface of the barrier, or cap, if the cap is provided and is disposed above the barrier. The wind diverting member has curved internal air passages gathering air from the water side of the sea wall and discharging air upwardly. The air passages optionally accelerate...

Sloping water tunnels and channels interconnect existing sources of water with dry land areas to form new water basins. Turbines are installed in rapidly flowing portions of the water tunnels and channels to generate electricity. Overflow tunnels connected to the sloping water tunnels by water gates communicate with wastewater treatment plants feeding into the sloping water tunnels to open the water gates when the outflow of treated wastewater starts to back up. The water tunnels and channels ar...

A method for connecting a subsea wellhead to a subsea manifold by an articulated flowline comprised of a plurality of flowline segments joined in series by adjustable ball joint connectors each of which comprises a plurality of bolts for clamping the joined segments in a fixed position and means for stretching the bolts by applying a force which does not exceed the yield strength of the bolts to loosen the connection. The method includes attaching one end of the flowline to an outlet of the well...

A subsea flowline (10) deployed onto the sea floor (S) has tie-in points for interfacing other subsea facilities. Mudmats (14A, 14B, 14C) support hubs (16A, 16B, 16C) at the tie-in points. One embodiment shown in FIG. 2 has a cradle (22) supporting flowline (10) for relative rotative movement. Hydraulic jacks (26) are connected to arms (24) to position and maintain hub (16) in a vertical orientation. Another embodiment, shown in FIG. 3, has an outer swivel sleeve (21A) which is mounted on mudmat...