Nano-thermite well plug
    431.
    发明授权

    公开(公告)号:US11480026B2

    公开(公告)日:2022-10-25

    申请号:US17075897

    申请日:2020-10-21

    Abstract: A composition and methods for setting a plug for well bores undergoing plugging and abandonment operations is described. Methods of setting the plug are also described include placing a blocking device below the plug location and creating a void space above the blocking device; placing a heat resistant base plate above the blocking device and introducing nano-thermite clusters and expandable bismuth alloy pellets into the void space; igniting the thermite and cooling the melted alloy to form a permanent plug in the void space.

    Marine deterministic notch compensation

    公开(公告)号:US11448791B2

    公开(公告)日:2022-09-20

    申请号:US16123763

    申请日:2018-09-06

    Abstract: A method of performing notch compensation and a system to perform notch compensation for a first seismic streamer are described. The method includes disposing the first seismic streamer at a first depth, where the seismic streamer includes a first set of sensors to receive reflections resulting from a seismic source, the reflections indicating a notch at a frequency. The method also includes disposing a second seismic streamer at a second depth, the second depth being less than the first depth and the second seismic streamer including a second set of sensors to receive reflections resulting from the seismic source. The method further includes processing the reflections received by the first set of sensors and the second set of sensors together to derive the match filter, and applying the match filter to the reflections received by the first set of sensors of the first seismic streamer to compensate for the notch.

    Wax deposit removal using aqueous surfactant

    公开(公告)号:US11427749B2

    公开(公告)日:2022-08-30

    申请号:US16921100

    申请日:2020-07-06

    Abstract: A method and system for removing wax deposits from a wellbore and other oil production and processing equipment using a wax removal surfactant having at least 1% alkyl polyglycoside (APG), at least 0.5% ethoxylated alcohol (AE) or alcohol ethoxysulfates (AES), and at least 1% saturated alcohol, and optionally comprising D-Limonene, wherein the wax removal surfactant solution forms a Winsor Type III or Type IV microemulsion with water and wax.

    Determination of rheology of fluid in an oil or gas well

    公开(公告)号:US11377918B2

    公开(公告)日:2022-07-05

    申请号:US16919277

    申请日:2020-07-02

    Inventor: Gunvald Nesheim

    Abstract: The invention relates to the measurement of the rheology of drilling fluid down a hydrocarbon well in real time during operations. A sensor device comprising a pipe rheometer with multiple diameters is installed in a bottom hole assembly tool, such that a portion of the total flow of drilling fluid passes through it. In this way the rheological properties of the drilling fluid can be determined under the high pressures and elevated temperatures encountered downhole.

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