摘要:
Apparatus and methods are provided for reducing drilling vibration during drilling with casing. In one embodiment, an apparatus for reducing vibration of a rotating casing includes a tubular body disposed concentrically around the casing, wherein tubular body is movable relative to the casing. Preferably, a portion of the tubular body comprises a friction reducing material. In operation, the tubular body comes into contact with the existing casing or the wellbore instead of the rotating casing. Because the tubular body is freely movable relative to the rotating casing, the rotating casing may continuously rotate even though the tubular body is frictionally in contact with the existing casing.
摘要:
An apparatus for use in a wellbore. The apparatus includes a body and a blade assembly. The blade assembly is movable between a collapsed position whereby the expandable apparatus has a smaller outer diameter and an expanded position whereby the expandable apparatus has a larger outer diameter. The apparatus further includes a pressure activated member for selectively allowing the blade assembly to move from the closed position to the open position. A method for using the apparatus, wherein a drill string with an expandable bit at the end thereof is lowered into the wellbore. Thereafter, the pressure activated member is activated to allow the cutting members to move from the collapsed position to the expanded position. Subsequently, the expandable bit is rotated to form a portion of the wellbore. Next, the expandable bit is deactivated and the cutting members are moved from the expanded position to the collapsed position.
摘要:
A system including a battery system to provide additional power during peak operating conditions is described. The system may avoid or reduce the need for extensive infrastructure associated with a power delivery system capable of providing peak power, but may instead, rely on infrastructure that need only provide power needed on an average basis.
摘要:
A water display is described having a lighting array emanating light that travels through a wall. Water flows down the wall to vary the appearance of the light that shines through the wall. The flow of water and particular lights being turned on and off may be controlled. Dramatic visual effects are provided including the appearance of moving art.
摘要:
A device to shoot water into the air for a water display is described. The configuration of the shooter allows a stream of water to be shot out that contains reduced or no air exiting the device with the water, which provides a non-frothy appearance. The device may control the velocity of the water being shot by the device so that unique visual effects may be achieved, including an effect where a volume of water is suspended in the air.
摘要:
A multimedia presentation system a projector to project images toward an audience. A plurality of nozzles are partially submerged in a body of water at locations between the projector and the audience. The plurality of nozzles are located at different distances from the projector. Each of the plurality of nozzles is arranged to produce a fan like water mist onto which the projector projects images. A controller is coupled to the projector and the plurality of nozzles. The controller causes the projector to project images and at least one of the plurality of nozzles to produce a water mist in a synchronized sequence such that the images appear at different distances from the projector at different times. The controller may further control the orientation of each nozzle to vary the distance by inclining the plane of the water mist relative to the surface of the body of water.
摘要:
A removable thumbturn core assembly which replaces a key core assembly after removing a key cylinder with a control key. The control key feature is preserved for removing the key cylinder.
摘要:
An integrated manufacture and design system and a database translator that allows use of a subset of data directly from a CAD database to provide the necessary control data for use in a CAM assembly system. A database translator according to the present invention can examine the CAD data specifying a product, determine which of the component parts of that product are unknown to the CAM assembly system, and can insert into the CAM assembly system's database whatever new information the CAM system requires to manufacture the product. The invention may be embodied as a number of software modules on a fixed medium such as a computer readable disk or computer memory.