Abstract:
PROBLEM TO BE SOLVED: To provide a filter screen exactly manufactured in a given cylindrical shape and an easy manufacturing method for the same. SOLUTION: A plurality of wires 110 disposed in parallel orthogonal to rods are connected to the plurality of rods 120 disposed in parallel in the first direction, then adjacent ends of the rods are welded, a plurality of splice bars 140 are welded intermittently between the adjacent rods at the connection parts 130, and sides of the rods are connected to one another to form a long sheet, then the long sheet is wound into cylindrical steps to form a cylindrical screen. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a support grid appropriately intensified so as to support a media bed in the inside of a vessel body. SOLUTION: The media bed support grid comprises a filter panel 12 which is provided with a plurality of filter wires 18 forming a filter surface by parting parallel each other, a plurality of channels disposed under the filter wires, and a manifold 20. A plurality of the channels are disposed approximately vertical to the filter wires, each channel having a bottom wall disposed adjacent to the inner surface of a vessel 14, a side wall supporting the filter wires, an opening part facing the upside, and an opening end facing the direction parallel with a main axis in the lengthwise direction of the channels. The manifold has a manifold wall crossing the main axis in the lengthwise direction of the channels and covers the opening end of the channels. The inside of the manifold is communicated with each opening end of the channels through each opening part extending through the manifold wall. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a highly sensitive accelerometer for determining acceleration of a structure. SOLUTION: The highly sensitive accelerometer includes, within a housing 158, a main part 156 suspended by support members 150, 152 and 154. The support members 150, 152 and 154 alternately wind around a fixed stem 160 and the main part 156 in a push-pull arrangement. At least a portion of one of the support members constitutes a transducer for measuring displacement of the main part 156 within the housing. An embodiment of the invention employs optical fiber coils as the support members 150, 152 and 154 to use an interference detection processor. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To facilitate the connection between ends of outer capillary tubes in assembling, setting or repairing. SOLUTION: A fiber optical transmission cable splice protector includes a splice tube positioned so as to (cover) the (ends) of two fiber optic cables, and having an outer capillary tube 34 containing at least one optical fiber 32, 33 within an inner capillary tube 37. The cable splice protector includes a pair of optical fiber (strain) relief mechanisms positioned near the (ends) of the optical fibers 32, 33. The (strain) relief mechanisms are (captured) within a radiator tube inserted to each end of the outer capillary tubes 34. The splice tube is welded to the outer capillary tubes 34. Heat generated by the welding process is dissipated by the radiators 60 and 62 and gases generated during the welding process are vented through-holes in the outer capillary tubes 34 into the optical fiber splice area. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
An apparatus and method of cutting an object in a wellbore including a downhole cutting tool (10) having a source of abrasive material (24); a source of high pressure fluid (30) mixable with the abrasive material (23); a rotatable nozzle section (12), the nozzle section rotatable due to a source of low pressure fluid (40) acting on a piston surface (70) formed on a sleeve (65), the sleeve rotationally and axially movable in a body of the tool; whereby the sources of high and low pressure fluid and the abrasive material are housed in the tool.
Abstract:
A method for casing a subsea wellbore includes running a tieback casing string into the subsea wellbore using a workstring including first, second, and third wiper plugs. The method further includes: launching a first release plug or tag into the workstring; pumping cement slurry into the workstring, thereby driving the first release plug or tag along the workstring; after pumping the cement slurry, launching a second release plug or tag into the workstring; and pumping chaser fluid into the workstring, thereby driving the release plugs or tags and cement slurry through the workstring. The release plugs or tags engage and release the respective wiper plugs from the workstring. The first wiper plug or release plug ruptures, thereby allowing the cement slurry to flow therethrough. The method further includes: stabbing the tieback casing string into a liner string; and retrieving the workstring, the workstring still including the third wiper plug.
Abstract:
A system for fracturing a hydrocarbon bearing formation includes a valve including a tubular housing having a bore therethrough and one or more flow ports formed through a wall thereof. One or more locator tags are embedded in the housing, and a sleeve is disposed in the housing and movable relative thereto between an open and a closed position. The system also includes a shifting tool comprising a shifter movable between an extended position and a retracted position and operable to engage the valve sleeve. The shifting tool includes a lock that keeps the shifter extended in the locked position and allows the shifter to retract in the unlocked position. The shifting tool also includes an antenna for detecting the locator tags, and an electronics package in communication with the antenna and the actuator for operating the actuator in response to detection of the locator tags.
Abstract:
A fluid monitoring apparatus includes a housing and a tracer sensor attached to an exterior of the housing. The housing has at least one flow passage for a fluid sample and a port for the tracer sensor to monitor the fluid sample in the housing. In one example, the monitoring apparatus may include a plurality of tracer sensors attached to the housing, wherein the tracer sensors are interchangeably attached to the housing. In one embodiment, the monitoring apparatus may be attached to a first well for detecting the presence of a tracer in the first well, wherein the tracer is supplied from a second well.
Abstract:
Embodiments of the invention generally relate to a valve assembly (100) for use during a cementing operation. In one embodiment, a valve includes a housing (130) having a bore (140, 142). The valve further includes a piston member (125) movable between a first position permitting fluid passage through the bore and a second position obstructing the bore through the housing. Additionally, the valve includes a biasing member (175) configured to bias the piston member toward the second position. In another aspect, a method of using a valve in a cementing operation is provided.
Abstract:
A packer has a swellable element and has end rings and compressible elements at each end of the swellable element. The packer may be first set using internal bore pressure to compress one of the compressible elements against one of the end rings with a first hydraulic setting mechanism. The packer may then be set a second time using annulus pressure to compress against the other compressible element with a second hydraulic setting mechanism. Either way, the compressible elements are compressed to expand out to the borehole and to limit extrusion of the swellable element outside the compressed elements.