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95results about How to "Reliability of mechanism" patented technology

Downhole surge reduction method and apparatus

A method and apparatus for use in the oil well industry for running in drilling/production liners and sub-sea casings down a borehole through drilling fluid on a drill pipe using a running tool with the benefits of surge pressure reduction are disclosed. In accordance with the present invention, a surge pressure reduction tool includes a diverter device having a housing with a set of flow holes formed therein and a sliding sleeve residing within the housing having a set of flow ports formed therein. By aligning the set of flow holes of the housing with the set of flow ports of the sleeve, the tool is set in a "surge pressure reduction" mode. By shifting, or axially indexing, the sleeve downward, the set of flow holes is blocked by the sleeve thus setting the tool in a "cementing" or "circulation" mode. This shifting or indexing is accomplished using an indexing mechanism. The indexing mechanism of the present invention includes a spring ring which is initially compressed and set in a circumferential groove formed around the top of the sleeve. As the sleeve is shifted downward from surge reduction mode to cementing/circulation mode, the spring ring decompresses radially outward to engage a circumferential groove formed in the housing. This effectively locks the sliding sleeve in the cementing/circulation mode. In accordance with the present invention, a surge pressure reduction tool further includes a volume compensation device which enables the diverter device to be shifted axially downward into the cementing/circulation mode even where the drilling/production liner or sub-sea casing is plugged with drill cuttings or downhole debris. In the cementing/circulation mode, a flow path is established for cement or drilling fluid to flow downward from the drill pipe, through the diverter device, volume compensation device, and running tool, and out into the borehole via the drilling/production liner or sub-sea casing. In the surge pressure reduction mode, an alternative flow path is established for drilling fluid to flow upward from the borehole into the drilling/production liner or sub-sea casing, through the running tool and volume compensation device, and into an annular space between the drill pipe and the borehole via the set of flow holes of the diverter device.
Owner:ALLAMON INTEREST +1

Downhole surge reduction method and apparatus

A method and apparatus for use in the oil well industry for running in drilling / production liners and sub-sea casings down a borehole through drilling fluid on a drill pipe using a running tool with the benefits of surge pressure reduction are disclosed. In accordance with the present invention, a surge pressure reduction tool includes a diverter device having a housing with a set of flow holes formed therein and a sliding sleeve residing within the housing having a set of flow ports formed therein. By aligning the set of flow holes of the housing with the set of flow ports of the sleeve, the tool is set in a "surge pressure reduction" mode. By shifting, or axially indexing, the sleeve downward, the set of flow holes is blocked by the sleeve thus setting the tool in a "cementing" or "circulation" mode. This shifting or indexing is accomplished using an indexing mechanism. The indexing mechanism of the present invention includes a spring ring which is initially compressed and set in a circumferential groove formed around the top of the sleeve. As the sleeve is shifted downward from surge reduction mode to cementing / circulation mode, the spring ring decompresses radially outward to engage a circumferential groove formed in the housing. This effectively locks the sliding sleeve in the cementing / circulation mode. In accordance with the present invention, a surge pressure reduction tool further includes a volume compensation device which enables the diverter device to be shifted axially downward into the cementing / circulation mode even where the drilling / production liner or sub-sea casing is plugged with drill cuttings or downhole debris. In the cementing / circulation mode, a flow path is established for cement or drilling fluid to flow downward from the drill pipe, through the diverter device, volume compensation device, and running tool, and out into the borehole via the drilling / production liner or sub-sea casing. In the surge pressure reduction mode, an alternative flow path is established for drilling fluid to flow upward from the borehole into the drilling / production liner or sub-sea casing, through the running tool and volume compensation device, and into an annular space between the drill pipe and the borehole via the set of flow holes of the diverter device.
Owner:ALLAMON INTEREST +1

Seismic support and reinforcement systems

InactiveUS20090025308A1Reliable and simple and inexpensiveReliability of mechanismBuilding roofsCeilingsOperating energyStructural engineering
The present invention includes a set of reinforcement and support devices for existing or new roof, ceiling and/or floor systems together with numerous variations that may be installed into existing buildings or new buildings to help prevent separation of wood or metal roof, ceiling and/or floor systems from the concrete, masonry or other types of walls supporting these systems in commercial, industrial and/or residential buildings. One embodiment includes a set of three brackets that are installed in a triangularly shaped arrangement along a side of a primary support beam and to the wall underneath a ledger, thus anchoring the support beam to the wall of the structure and stabilizing the roof, ceiling or floor it supports. Another embodiment includes a single integrated unit that attaches to the wall underneath the ledger and to an adjacent support board, thus anchoring the support board (and the system it supports) to the wall of the structure. Another embodiment includes an angle iron with predrilled holes that attaches through the ledger directly to the wall to reinforce the ledger and extend the area of horizontal support provided by the ledger. Other embodiments provide support structures that may be attached and arranged to provide specific structural support at designated locations, and/or to provide wall-to-wall structural support across the span of a roof, ceiling or floor. All embodiments may be adapted for use with ceilings, roofs or floors.
Owner:DEANS BRIAN W +1
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