摘要:
The invention discloses a system and method for controlling a wellbore. The method comprises the steps of: providing a capping stack comprising a number of releasable modules, each module having a size and weight within predetermined limits, wherein said modules include at least one ram type blow out preventer module, and wherein said modules include a connector module for connecting the capping stack to an attachment point of the wellbore; transporting said modules by cargo airplane to a location near the wellbore; interconnecting the modules to provide the capping stack; and connecting the capping stack to the attachment point of the wellbore.
摘要:
A “HYDRAULIC PRESSURE GENERATION UNIT WITH PNEUMATIC ACTUATION” in particular a multifunction unit activated by low pressure air, consisting of at least one pump (1), preferably two pumps (1 and 2), which are pneumatically automated, comprising a pneumatic cylinder (5) with a medial plunger (7), in addition to two symmetrical and opposite hydraulic plungers (8 and 9) limiting an upper hydraulic chamber (1 A and 2 A) and another lower hydraulic chamber (1 B and 2 B) having different volumes, wherein since they work in parallel and out-of-phase a reduced oil volume is required and the pulsating movement thereof is removed.
摘要:
An accumulator for hydraulically actuating subsea equipment includes a hydraulic fluid chamber and a gas chamber. The hydraulic fluid chamber is in fluid communication with the subsea equipment and comprises a hydraulic piston slidably received, at least partially, within the hydraulic chamber. The gas chamber comprises a charge piston slidably received within the gas chamber, the charge piston dividing the gas chamber into a first portion and a second portion. The first portion of the gas chamber is configured to receive ambient hydrostatic pressure therein, and the second portion of the gas chamber is configured to receive precharge gas therein.
摘要:
A subsea system including a frame including an intensifier, the intensifier providing structural support to the frame and capable of providing pressurized delivery fluid. The intensifier includes an intensifier chamber and a delivery fluid chamber separated by a piston, the intensifier chamber capable of receiving ambient pressure to provide a pressure on the delivery fluid through the piston. Also, a regulation system regulates the amount of ambient pressure communicated to the intensifier chamber to maintain the delivery fluid pressure substantially constant as the delivery fluid is depleted.
摘要:
A system for reducing pressure in a subsea operator. In one embodiment, a subsea system includes an operator and a deintensifier. The operator includes a housing and a piston. The piston is movably disposed within the operator housing and divides an inner volume of the operator housing into a closing chamber and a second chamber. The deintensifier is fluidically coupled to the operator. The deintensifier includes a housing and a piston. The piston includes a closing surface and an opening surface. The closing surface is fluidically coupled to the second chamber of the operator housing. The opening surface is fluidically coupled to ambient pressure. The area of the closing surface is greater than an area of the opening surface so as to increase the pressure differential between the closing chamber and the second chamber and assist in moving the operator piston to the closed position.
摘要:
An accumulator for hydraulically actuating subsea equipment includes a hydraulic fluid chamber and a gas chamber. The hydraulic fluid chamber is in fluid communication with the subsea equipment and comprises a hydraulic piston slidably received, at least partially, within the hydraulic chamber. The gas chamber comprises a charge piston slidably received within the gas chamber, the charge piston dividing the gas chamber into a first portion and a second portion. The first portion of the gas chamber is configured to receive ambient hydrostatic pressure therein, and the second portion of the gas chamber is configured to receive precharge gas therein.
摘要:
Higher pressure exists at the bottom of deep water (including other fluids). This system utilizes machinery to compress a compressible fluid matter such as air with deep water high pressure so as to store the energy in the compressed air having a smaller compressed volume. The compressed air is subsequently injected into an expansion chamber in which it releases the stored energy and returns to its original volume. In constant temperature, a 10 m3 volume of water provides 10 times pressure to compress a single volume to 1/10 its volume. When the pressure is reduced 10 times, the compressed air would return to its original volume to release the stored energy which can be utilized to rotate a turbine and in turn a power generator to generate electric power.
摘要:
Systems and methods for efficiently operating a hydraulically actuated device/system are described herein. For example, systems and methods for efficiently operating a gas compression and expansion energy storage system are disclosed herein. Systems and methods are provided for controlling and operating the hydraulic actuators used within a hydraulically actuated device/system, such as, for example, a gas compression and/or expansion energy system, within a desired efficiency range of the hydraulic pump(s)/motor(s) used to supply or receive pressurized hydraulic fluid to or from the hydraulic actuators. In such a system, a variety of different operating regimes can be used depending on the desired output gas pressure and the desired stored pressure of the compressed gas. Hydraulic cylinders used to drive working pistons within the system can be selectively actuated to achieve varying force outputs to incrementally increase the gas pressure within the system for a given cycle.
摘要:
A pressure booster (1) for a die casting machine, comprises a pressure booster piston (4) having a valve seat (7), wherein the pressure booster piston (4) interacts with the valve seat (7) to form a shut-off or non-return valve (6). The valve body (24) is displaceable to a limited extent in the axial direction (a) and can be retained hydraulically in a starting position.
摘要:
In a pressure booster having a cylinder mechanism, a floating mechanism is disposed between pistons and a piston rod, the floating mechanism being capable of absorbing offset (off centered) loads that are imposed on the pistons from the piston rod. The floating mechanism is constituted from swing bolts connected to both ends of the piston rod, support plates mounted onto end surfaces of the pistons and which swingably support the swing bolts therein, and fixing plates disposed between the ends of the piston rod and the support plates.