Abstract: A method of clamping elongate elements in a parallel piggybacked arrangement during subsea laying of the elements is disclosed. The method includes opposed reciprocating jaws which force together clamp segments around the elongate elements to assemble a piggybacking clamp. The piggybacking clamp applies clamping forces to the elongate elements.

Abstract: A portable ground deployed flood barrier for the protection of a structure against tidal or ground surface flooding provides a lower cylindrical ground tube placed on the ground against the structure base, an upper cylindrical float tube and an intermediate sheet material attaching between the ground tube and the float tube which is presented as folded but readily spread vertically as the flood waters rise, causing the float tube to rise to the water level while leaving the ground tube in contact with the ground surface forming a water proof barrier for the structure against the flood waters.

Abstract: A marine barrier has a plurality of column modules, each having a vertical column, and an impact net attached to and extending between the column modules. Each of the columns has four buoyant horizontal legs extending from its lower portion. A distal end of each of the legs is attachable to a distal end of a corresponding leg of an adjacent column module to form a series of diamond-shaped supports between the columns to support the columns and the impact net. When the barrier is floating in a body of water and a moving vessel impacts the impact net, the impact net deflects to transfer a force of the impact to one or more of the column modules, which in turn engage the water to transfer the force of the impact to the water, to arrest the motion of the vessel.

Abstract: A reinforced helical pile system suitable for use in seismically active areas incorporates steel fibers in the grout and a fiber reinforced polymer sleeve (casing). A low-friction driving assembly and low-friction sleeve couplings enable the sleeve to be drawn into the soil substantially without rotation, reducing power consumption and preserving the integrity of the casing.

Abstract: A shoreline protection system comprising a first barrier assembly, which comprises a first pile extending into a bottom of a body of water, a second pile extending into the bottom of the body of water, wherein the first pile and the second pile are spaced apart and essentially parallel relative to each other, and a first screen having an upper edge, a lower edge, and a plurality of apertures extending therethrough, wherein the first screen extends between the first pile and the second pile, wherein the lower edge of the first screen is spaced from the bottom of the body of water.

Abstract: A modular soil treatment system and apparatus for treating soils contaminated by petroleum hydrocarbons such as gasoline, diesel and heating oil, chlorinated hydrocarbons and volatile organic compounds is disclosed which can be transported to any site and reused.

Abstract: A longitudinally yieldable support for underground roof support includes an elongate outer shell filled with a solid compressible filler material. At least one air ventilation tube extends between opposite sides of the support to allow a flow of air through the support as the support yields.

Abstract: A substantially rectangular trench shoring sheeting panel made primarily of polyethylene includes at least one pair of hand holes. In some embodiments, the sheeting panel includes a plurality of buttons protruding outwardly from one of the sheeting panel's surfaces. As compared to three-quarter inch FinnForm, the polyethylene sheeting panel typically has (i) equivalent or superior structural properties and (ii) a significantly lower useful-life cost.

Abstract: A ram or shutter device includes rams operable between an open position withdrawn from a bore to a closed position to contact a tubular disposed in the bore, the rams may not seal the bore. A well system in accordance to an aspect of the disclosure includes an assembly providing a bore in communication with a wellbore, a device operable to shear a tubular disposed in the bore, and a shutter device having rams operable between an open position withdrawn from the bore to a closed position contacting the tubular in the bore.

Abstract: A floating flap gate to prevent water from overflowing into underground spaces, with ease in raising or lowering the door body when water level changes. The floating flap gate comprises a door body with a forward end which swings upwards or downwards in a same direction following a rise or a drop in water level, wherein an opposite end serves as a fulcrum. A rod is attached to the forward end of the door body. One end of a wire rope is attached to the rod, and the other end is attached to a counterweight via fixed pulleys. The fixed pulleys are arranged so that the counterweight is at its lowest point when the angle of inclination of the door body with respect to a horizontal plane reaches within a range from 10° to 80° during raising or lowering of the door body.

Abstract: An apparatus, system and method capable of spacing a vortex induced vibration (VIV) suppression device from a tubular. The apparatus, system and method including a collar capable of facilitating suppression of VIV of a high temperature tubular; suppressing VIV of multiple tubulars covered by a single suppression device; or allowing for functioning of the tubular cathodic protection system.

Abstract: An equipment for installing silt fencing includes a motive vehicle with an attached trencher to cut a trench having a predetermined depth and width. The trencher includes a cutting wheel and a trenching foot having a predetermined width for determining a width of a trench cut with the trenching assembly. The trencher is vertically positionable and a gauge is provided to the operator for controlling the depth of the trench as terrain and soil condition varies. The cutting wheel and trenching foot are also rotatable to control the orientation of the trench with respect to plumb. The equipment may also include a silt fence installation station including a power hammer on a positionable boom for another operator to use to drive the silt fence stakes into the ground. The equipment may also include a back filler on a side opposite the trencher for backfilling the trench.

Abstract: A fresh water transportation system is disclosed that takes advantage of the buoyancy of fresh water in salt water to transport fresh water through a body of salt water. The fresh water flows from an above-water vessel through a down pipe supported on the sea bed, and through a curved pipe that redirects the fresh water flow upwardly. In an embodiment a gas, for example air or natural gas, is injected into the fresh water in the upwardly directed portion of the flow. An inclined compliant pipe receives the upwardly directed flow, such that the hydrostatic pressure is communicated to the fresh water, whereby the fresh water is urged through the compliant pipe.

Abstract: A static sealing device for a wheel hub comprising an inner ring associated with an outer ring of a constant velocity joint coupled with the wheel hub. A first sealing assembly is integrated between the inner ring and an outer ring of the wheel hub to protect respective rolling bodies. A second sealing assembly is integrated between the wheel hub and the outer ring of the joint. The first sealing assembly includes a shield fitted to the inner ring with a sleeve portion thereof and a flange portion extending towards the joint carrying an annular signal generating element and a tubular support element which projects axially from the flange portion. The second sealing assembly includes a tubular core having opposite ends embedded in an elastomeric material forming a sealing lip towards the joint and an elastically deformable annular tooth for engaging with a complimentary feature of the tubular support element.

Abstract: Disclosed is a piston ring for engine that includes chromium (Cr) coating layer coated on the surface of a base material of the piston ring of an engine; a chromium nitride (CrN) coating layer; and a silicon-incorporated diamond-like carbon (Si-DLC) coating layer, which is formed on the CrN coating layer, and contains Si component of about 3˜10 at %, and a method for manufacturing thereof.

Abstract: The invention relates to a sealing system, in particular for sealing pump shafts of vertically arranged pumps for conveying liquefied natural gas (LNG) or other cryogenic fluids below ?80° C. The sealing system has a mechanical seal arrangement. A barrier fluid flows through the mechanical seal arrangement at a barrier fluid pressure. The mechanical seal arrangement prevents a sealing fluid from exiting a sealing chamber. The barrier fluid pressure is higher than a sealing fluid pressure in the sealing chamber.

Abstract: A recovery underwater base for handling an autonomous underwater vehicle (AUV) equipped with seismic sensors for recording seismic signals during a marine seismic survey. The recovery underwater base includes a storing part configured to store the AUV; an inlet part configured to control access to the storing part; a control part configured to control the inlet part; and a support part configured to support the control part, the storing part and the inlet part and to prevent a burial of the recovery underwater base if deployed on the ocean bottom. The control part is further configured to guide the AUV from the ocean bottom to the inlet part.

Abstract: Methods and apparatus are disclosed for deploying one or more plate anchors on the seafloor prior to later installation (embedment) of the plate anchors using an installation tool such as a suction follower. The methods and apparatus may be used for batch-setting multiple plate anchors on the seafloor for a drilling vessel mooring in which the plate anchors and an installation tool are subsequently engaged for subsequent suction embedment of the plate anchors to design penetration depth.

Abstract: A seal holder for retaining a sealing arrangement (119,121), said sealing arrangement (119,121) being adapted to seal against a facing seal surface (209) in a bore (203), said seal holder having an intermediate section (117a) encircled by a peripheral section (117b) arranged for carrying said seal arrangement (119,121), wherein said intermediate section (117a) is convex shaped towards the pressure side and is adapted to exert radial pressure on said peripheral section (117b) in the event of exposure to pressure on its convex side. The invention also relates to a method for sealing a bore by applying an apparatus equipped at its lower end with a seal holder (117) retaining a sealing arrangement (119,121).

Abstract: Compaction aid compositions and methods for compacting soils, sands, and other aggregates are described herein. In particular, the compaction aid compositions can comprise at least one synthetic fluid that was previously derived from a Gas-to-Liquids process. The compactions aids can be used to efficiently and effectively compact various soils, sands, and other aggregates at temperatures below the freezing point of water, thereby making such compaction aids highly useful in arctic and subarctic environments.