A pumping unit base and methods for producing oil and gas with the pumping unit base. The pumping unit base may include a plurality of driven piles installed in the ground, and a metal platform fixedly attached to the plurality of driven piles, wherein the metal platform is positioned above the ground. The metal platform may be removed from the driven piles and reinstalled to the driven piles.

A double-acting hydraulic impact hammer includes a drop weight and an inner hydraulic piston. The drop weight is arranged to be driven in an upward and downward direction and the drop weight acts on a pile during its downward motion. The piston has a voided internal area defining a piston volume which is arranged to receive a piston rod and along which the piston extends and retracts axially. The piston volume is in sealed hydraulic communication with the hollow rod volume to form a first volume which changes size as the piston moves along the piston rod whereby the application of hydraulic pressure to the first volume biases the piston towards its extended position. The hammer includes a bore and a collar. The collar forms an outer piston having a working surface which when exposed to hydraulic fluid has sufficient surface area to lift the piston and the drop weight.

A double-acting hydraulic impact hammer includes a drop weight and an inner hydraulic piston. The drop weight is arranged to be driven in an upward and downward direction and the drop weight acts on a pile during its downward motion. The piston has a voided internal area defining a piston volume which is arranged to receive a piston rod and along which the piston extends and retracts axially. The piston volume is in sealed hydraulic communication with the hollow rod volume to form a first volume which changes size as the piston moves along the piston rod whereby the application of hydraulic pressure to the first volume biases the piston towards its extended position. The hammer includes a bore and a collar. The collar forms an outer piston having a working surface which when exposed to hydraulic fluid has sufficient surface area to lift the piston and the drop weight.

A percussion device that includes: an input side; an output side; at least one drive transmitter; a drive transmitter pathway; a percussion impactor; and a percussion anvil; where: the drive transmitter pathway is a circumferential pathway around a longitudinal axis of the percussion device; the drive transmitter pathway includes at least one tooth section including a lift section and a lead section; the at least one tooth section is essentially one wavelength of a sawtooth wave; the lift section is inclined away from a base of the drive transmitter pathway; the lead section is a section of the tooth section which abruptly returns to the base of the drive transmitter pathway; the input side is rotationally isolated from the percussion impactor; the percussion anvil is attached to, or forms part of, the output side; the percussion impactor includes an impact end and a force input end which are longitudinally opposite terminal ends of the percussion impactor; and the impact end faces the percussion anvil; such that: when in use, and the output section is free to rotate, the at least one drive transmitter and the drive transmitter pathway are configured to act co operatively to transfer the rotational motion of the input side to the output side; and when in use and limited or no rotation of the output side is possible, the at least one drive transmitter and the drive transmitter pathway are configured to act co-operatively to increase, maintain or decrease the distance between the percussion impactor and the percussion anvil; wherein the at least one drive transmitter and the drive transmitter pathway are configured to act co-operatively to accept rotational motion from the input side and transmit a percussive and/or rotational motion to the output side.

A percussion device that includes: an input side; an output side; at least one drive transmitter; a drive transmitter pathway; a percussion impactor; and a percussion anvil; where: the drive transmitter pathway is a circumferential pathway around a longitudinal axis of the percussion device; the drive transmitter pathway includes at least one tooth section including a lift section and a lead section; the at least one tooth section is essentially one wavelength of a sawtooth wave; the lift section is inclined away from a base of the drive transmitter pathway; the lead section is a section of the tooth section which abruptly returns to the base of the drive transmitter pathway; the input side is rotationally isolated from the percussion impactor; the percussion anvil is attached to, or forms part of, the output side; the percussion impactor includes an impact end and a force input end which are longitudinally opposite terminal ends of the percussion impactor; and the impact end faces the percussion anvil; such that: when in use, and the output section is free to rotate, the at least one drive transmitter and the drive transmitter pathway are configured to act co operatively to transfer the rotational motion of the input side to the output side; and when in use and limited or no rotation of the output side is possible, the at least one drive transmitter and the drive transmitter pathway are configured to act co-operatively to increase, maintain or decrease the distance between the percussion impactor and the percussion anvil; wherein the at least one drive transmitter and the drive transmitter pathway are configured to act co-operatively to accept rotational motion from the input side and transmit a percussive and/or rotational motion to the output side.

A pile anchor reinforcing system includes a pile anchor having an end penetrating a seafloor, and a mudmat positionable on the seafloor and defining a reinforcing pile aperture or a surface area to receive a gravity anchor or both, and a pile anchor aperture sized to receive the pile anchor. A reinforcing pile is extendable through the reinforcing aperture and penetrates the seafloor. The mudmat and the reinforcing pile and/or the gravity anchor cooperatively reinforce the pile anchor against lateral and vertical loading.

A pile anchor reinforcing system includes a pile anchor having an end penetrating a seafloor, and a reinforcing pile penetrating the seafloor past the end of the pile anchor and being operatively coupled to the pile anchor to reinforce the pile anchor against lateral and vertical loading.

The invention relates to a construction device and to a method for operating this construction device, comprising a carrier device, an approximately vertical mast, which is mounted on the carrier device, a movement element, which is vertically movable along a linear guide on the mast, and at least one GPS receiving unit, which is arranged in the region of the mast. According to the invention, it is provided that the at least one GPS receiving unit is attached to the movement element and that the at least one GPS receiving unit can be moved between an upper, first measuring position and a lower, second measuring position by means of the movement element.

Extensible shells and related methods for constructing a support pier are disclosed. An extensible shell can define an interior for holding granular construction material and define a first opening at a first end for receiving the granular construction material into the interior and a second opening at a second end. The extensible shell can be flexible such that the shell expands when granular construction material is compacted in the interior of the shell. A method may include positioning the extensible shell in the ground and filling at least a portion of the interior of the shell with the granular construction material. The granular construction material may be compacted in the interior of the extensible shell to form a support pier.

The rapid consolidation and compaction method comprises (i) first driving a hollow pipe, (ii) driving a pipe with a removable end plate after filling and compacting the sandy material in it, through the hollow pipe, to required depth, creating high excess pore-water pressures in the range of 50 to 300 KPa in clayey soils, (iv) pulling out the pipe section leaving behind the removable end plate and thereby installing porous displacement piles which allows dissipation of the excess pore-water pressures horizontally to the porous displacement pile, in which the excess water flows out vertically to the ground surface, and (v) the length of the drainage path is reduced to half the spacing between adjoining porous displacement piles, allowing rapid consolidation resulting in increase in density. Installing the porous displacement piles in the layer of loose to medium dense sand layer results in the instantaneous increase in its density.