FLOW VELOCITY METER AND METHOD OF MEASURING FLOW VELOCITY OF A FLUID

    公开(公告)号:US20190226325A1

    公开(公告)日:2019-07-25

    申请号:US16312679

    申请日:2017-06-30

    Abstract: A flow velocity meter, for measuring flow velocity of a fluid, has a distributed acoustic sensor along aq longitudinal direction, which has a distributed sensing element. The distributed sensing element is acoustically coupled to a distributed fluid-contact surface via a distributed acoustic path extending between the distributed fluid-contact surface and the distributed sensing element. Moreover the distributed acoustic path is fully bypassing the fluid. At least a part of the fluid-contact surface is provided with a flow-disturbing surface texture having a surface relief with a pre-determined pattern in said longitudinal direction. Acoustic flow noise, emitted as a result of the fluid flowing along and in contact with the flow-disturbing surface texture, is picked up by the distributed sensing element as a distributed acoustic signal.

    USE OF A SPINDLE TO PROVIDE OPTICAL FIBER IN A WELLBORE

    公开(公告)号:US20190024482A1

    公开(公告)日:2019-01-24

    申请号:US16066244

    申请日:2016-12-22

    Abstract: A method of providing optical fiber in a wellbore may include lowering a spindle holding the optical fiber through the wellbore and anchoring a distal end of the optical fiber in the wellbore. The method may also include drawing the optical fiber from the spindle by pulling the spindle back through the wellbore. A device for providing optical fiber in a wellbore may include a spindle configured to hold at least a portion of the optical fiber as the spindle moves through the wellbore. The optical fiber is drawn from the spindle as the spindle passes through the wellbore.

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