SUBSEA NAVIGATION SYSTEMS AND METHODS
    12.
    发明申请

    公开(公告)号:US20170284806A1

    公开(公告)日:2017-10-05

    申请号:US15087652

    申请日:2016-03-31

    Inventor: Andrew Jaffrey

    CPC classification number: G01C21/203 B63G2008/005

    Abstract: A navigation system includes a support structure configured to be positioned at a sea floor. The navigation system also includes multiple transducers coupled to the support structure at fixed locations and configured to emit multiple reference signals. The navigation system further includes a transducer coupled to a movable subsea vessel and configured to receive the plurality of reference signals. A controller includes a processor and a memory, and the processor is configured to determine a position of the movable subsea vessel relative to the support structure based on the multiple reference signals.

    Measurement system
    13.
    发明授权

    公开(公告)号:US09677573B2

    公开(公告)日:2017-06-13

    申请号:US14181185

    申请日:2014-02-14

    Inventor: Andrew Jaffrey

    Abstract: A system for determining the location of a piston within an accumulator is provided in which a short circuit is created between elements in the accumulator and the piston which is movable within the accumulator. As the piston moves along the longitudinal axis of the accumulator, the circuit's electrical characteristics (e.g., voltage, resistance, current) vary in accordance with the length of the circuit. Measurement of these electrical characteristics allows for precise determination of the piston location relative to the accumulator. In a commercial embodiment, the invention can be utilized to determine fluid volumes in an accumulator by monitoring the location of the piston. This invention overcomes prior art systems because, inter alia, it does not require electrical sensory equipment, enables remote monitoring, maintains system integrity and functions irrespective of container wall thickness.

    Blowout Preventer with Inflatable Element
    15.
    发明申请
    Blowout Preventer with Inflatable Element 有权
    带充气元件的防喷器

    公开(公告)号:US20170058624A1

    公开(公告)日:2017-03-02

    申请号:US14840490

    申请日:2015-08-31

    CPC classification number: E21B33/062 E21B33/06 F16J15/48 F16K7/10

    Abstract: An apparatus includes a blowout preventer housing comprising a bore extending through the blowout preventer housing and an inflatable element positionable within the blowout preventer housing and comprising an internal cavity. The internal cavity is configured to receive fluid pressure to expand the inflatable element and facilitate forming a seal within the blowout preventer housing.

    Abstract translation: 一种装置包括防喷器壳体,其包括延伸穿过防喷器壳体的孔,以及可定位在防喷器壳体内并包括内腔的可充气元件。 内部空腔构造成接收流体压力以膨胀可膨胀元件并且有助于在防喷器壳体内形成密封。

    System for communicating data via fluid lines

    公开(公告)号:US10246994B2

    公开(公告)日:2019-04-02

    申请号:US14850341

    申请日:2015-09-10

    Inventor: Andrew Jaffrey

    Abstract: The present disclosure relates generally to data communication in subsea oil and gas drilling and production operations. In particular, data communication from sensors located on a piece of subsea oil and gas drilling and/or production equipment to a remote location, such as to a demodulation system, is disclosed. The data communication system can include sensors for measuring various characteristics of the subsea equipment, for coding the measured data into a signal, for transmitting the signal, and for ultimately decoding the signal. The signal is transmitted along the structures which provide the containment for existing hydraulic fluid lines associated with the subsea equipment by a variety of methods, such as by pulse position modulation and/or reverse time pulse position modulation. The communication system can further include a local power generator assembly to power associated sensors and transmitters.

    Smart washer for pre-load monitoring

    公开(公告)号:US09964135B2

    公开(公告)日:2018-05-08

    申请号:US14971670

    申请日:2015-12-16

    CPC classification number: F16B31/028

    Abstract: A pre-load monitor is arranged for use between a washer face of a fastener and a bearing surface of a fixture arranged to receive a portion of a shank of the fastener. The pre-load monitor, which can be in the form of a washer, includes a piezoelectric generator which generates the electrical power to measure, monitor and report the pre-load. The resulting electrical power produced is proportional to the pre-load and can be stored to provide the energy required to function electrical, electronic and communication circuits included in the washer. Alternatively, the pre-load monitor can be a half- or split ring (or a C-ring) constructed similarly to that of the washer, or the ring can be a two-piece gasket construction that includes an array of the washers.

    Blowout preventer status assembly
    20.
    发明授权

    公开(公告)号:US09957771B2

    公开(公告)日:2018-05-01

    申请号:US14618430

    申请日:2015-02-10

    Abstract: A status assembly to provide visual and electronic indication of the position (open, closed, in-between) of the ram of a ram-type blowout preventer (BOP). The assembly is capable of coupling with a hydraulic motor that can be used to open and close the ram locks. The status assembly includes a rotatable element protruding from the BOP, a gear rotatable by the rotatable element, and an indicator that indicates the rotation position of the rotatable element and thus the linear position of the BOP ram. Some embodiments can also include a sensor that outputs an electronic signal to the system operator and can be incorporated into the main display for the BOP control system. This device is able to give immediate feedback to operators and to indicate whether each ram has achieved its intended travel.

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