Semi-autonomous downhole taxi with fiber optic communication

    公开(公告)号:US11002093B2

    公开(公告)日:2021-05-11

    申请号:US16266352

    申请日:2019-02-04

    摘要: A semi-autonomous downhole taxi with fiber optic communication is described. The taxi includes a housing configured to travel within a horizontal section of a wellbore. A docking station is detachably attached to the housing. The docking station is configured to couple to a wireline to pass the taxi through a vertical section of the wellbore. The docking station is configured to be detached from and re-attached to the housing. A fiber optic cable spool is attached to and carried by the housing. A fiber optic cable is wound on the fiber optic cable spool. The fiber optic cable mechanically connects the docking station and the housing. The fiber optic cable is configured to unspool from the fiber optic cable spool as the housing, detached from the docking station, travels through the horizontal section of the wellbore. The fiber optic cable is configured to pass data between the docking station and the housing. The data is associated with wellbore operations to be performed by the taxi in the horizontal section of the wellbore.

    Untethered near-wellbore stimulation

    公开(公告)号:US12000227B1

    公开(公告)日:2024-06-04

    申请号:US18092831

    申请日:2023-01-03

    IPC分类号: E21B37/00 E21B31/00 E21B43/26

    CPC分类号: E21B31/005 E21B43/26

    摘要: A stimulation tool for dislodging material from a perforation formed through a tubular disposed in a wellbore includes a main body formed at least in part from a material that is buoyant in a wellbore fluid, a ballast, a magnet, and a pressure pulse generator. The tool is configured to descend downhole by force of gravity when the ballast is attached and couple, by the magnet, to an interior surface of the tubular upon arrival at a downhole location proximate the perforation. When the tool is coupled by the magnet to the interior of the tubular, the tool transmits pressure pulses from the pressure pulse generator into the perforation, thereby dislodging material from the perforation. The tool de-couples from the interior surface and releases the ballast, thereby permitting the tool to ascend uphole, driven at least partially by a buoyant force exerted by the wellbore fluids.

    Automated production optimization technique for smart well completions using real-time nodal analysis including real-time modeling

    公开(公告)号:US11441395B2

    公开(公告)日:2022-09-13

    申请号:US16414630

    申请日:2019-05-16

    摘要: Systems and methods include a method providing automated production optimization for smart well completions using real-time nodal analysis including real-time modeling. Real-time well rates and flowing bottom-hole pressure data are collected by a multilateral well optimizing system at various choke settings for multiple flow conditions for each lateral of a multilateral well during regular field optimization procedures. Surface and downhole pressures and production metrics for each of the laterals are recorded for one lateral at a time. A multilateral well production model is calibrated using the surface and downhole pressures and the production metrics for each of the laterals. Flowing parameters of individual laterals are estimated using the multilateral well production model. An optimum pressure drop across each downhole valve is determined using the multilateral well production model. A productivity of each lateral is estimated using the model during the commingled production at various choke valves settings.