Method of identifying a material and/or condition of a material in a borehole

    公开(公告)号:US10697286B2

    公开(公告)日:2020-06-30

    申请号:US15570085

    申请日:2016-04-29

    Abstract: A method of identifying a material and/or condition of a material in a borehole is described, together with related apparatus. The material may either be between first and second tubulars or between a first tubular and a wall of the borehole. The method may include providing a reference quality factor (Qreference) for one or more known materials in one or more known conditions and measuring a downhole quality factor (Qmeasured) of the material and/or material condition to be identified. A spectral ratio α=(Qmeasured/Qreference) may then be computed for one or more known materials under one or more known conditions followed by an analysis of the spectral ratios to identify the material and/or condition of the material in the borehole.

    Pipeline method and apparatus
    42.
    发明授权

    公开(公告)号:US10520112B2

    公开(公告)日:2019-12-31

    申请号:US15546225

    申请日:2016-02-22

    Abstract: A method and apparatus are provided for laying pipelines. The apparatus is attached to a portion of a pipeline and includes a tensioning member and a buoyancy element attached to a mid-portion of the tensioning member. When the buoyancy element is submerged, the buoyancy force tensions the tensioning member, and the pipeline will take the intended deflected shape to follow seabed depressions.

    P/S WAVE MEASUREMENT AND COMPENSATION
    44.
    发明申请

    公开(公告)号:US20190250297A1

    公开(公告)日:2019-08-15

    申请号:US16393681

    申请日:2019-04-24

    Abstract: A method for use in surveying a subsurface region beneath a body of water by detecting compressional, P, waves propagating through the body of water includes locating one or more sensor systems in the water at or close to the subsurface region, using the or each sensor system to detect P waves in the water, and translating all or a portion of the data representing the detected P waves to a higher level above the subsurface region. In the method, the effects of S waves, propagating in the subsurface and converted at the water/subsurface interface into P waves propagating in the water or along the seabed interface, in the translated data is reduced.

    P/S wave measurement and compensation

    公开(公告)号:US10365388B2

    公开(公告)日:2019-07-30

    申请号:US15309043

    申请日:2015-05-06

    Abstract: A method for use in surveying a subsurface region beneath a body of water by detecting S waves propagating through the subsurface region. The method comprises using a first sensor configuration to detect mixed S and P waves on or in the subsurface region, using a second sensor configuration located on or in relatively close proximity to the subsurface region to detect P waves in the water, and using the P waves detected in the water to compensate the detected mixed S and P waves, and thereby attenuate the effects of P waves in the mixed S and P waves.

    Evaluation of downhole installation

    公开(公告)号:US10344582B2

    公开(公告)日:2019-07-09

    申请号:US15539299

    申请日:2015-12-21

    Abstract: A downhole installation includes a first pipe layer, a second pipe layer about the first pipe layer, an annulus between the first and second pipe layers, and a geological formation outside of the second pipe layer. A method for evaluating the downhole installation includes: exciting a flexural wave in the first pipe layer using an angled acoustic transmitter; receiving third interface echo data using a plurality of angled acoustic receivers at different locations along the longitudinal extent of the pipe layers; generating acoustic resonance across the thickness of the first and second pipe layers by use of full waveform excitation; receiving the acoustic response wave field generated by the full waveform; identifying a suitable component of the acoustic response wave field; determining if the material outside the second pipe layer is fluid or solid; and analyzing the third interface echo data to thereby evaluate material conditions in the annulus.

    METHOD OF PLUGGING A WELL
    47.
    发明申请

    公开(公告)号:US20190128093A1

    公开(公告)日:2019-05-02

    申请号:US16218286

    申请日:2018-12-12

    Abstract: A method of plugging a well in a plug and abandonment procedure includes providing a tubing in a wellbore, in a location for a well plug, the tubing is provided with an internal cable section placed inside of the tubing, and forming a plug in the well in said location for the well plug across the width of the tubing and a surrounding wellbore annulus to create a permanent barrier without pulling the tubing from the wellbore. The step of forming the plug includes substantially removing the internal cable section inside the tubing and forming a fluid-tight seal in the tubing where the internal cable section has been removed, for separating, on either side of the seal, first and second fluid volumes of the tubing.

    System for fluid redistribution
    50.
    发明授权

    公开(公告)号:US10179299B2

    公开(公告)日:2019-01-15

    申请号:US15106531

    申请日:2013-12-20

    Abstract: A combined fluid collector and redistributor for a process engineering column, including a fluid collector for collecting a first fluid; a fluid redistributor arranged below the fluid collector to define a space between the fluid collector and the fluid redistributor; at least one pipe passing through the space to connect the fluid collector to the fluid redistributor; and at least one conduit extending through the fluid collector to permit a second fluid to flow through the fluid collector. There is at least one deflector in the space, wherein the at least one deflector is set at an angle relative to a central axis of the device whereby flow of the second fluid within the space is displaced angularly around the central axis.

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