INFLATABLE ELEMENT SYSTEM FOR DOWNHOLE TOOLS

    公开(公告)号:WO2023049536A1

    公开(公告)日:2023-03-30

    申请号:PCT/US2022/071232

    申请日:2022-03-21

    Inventor: BALL, David Earl

    Abstract: A straddle packer assembly for deployment in a wellbore in which the straddle packer assembly includes a mandrel on which is mounted a first inflatable element and a second inflatable element. A first end of the first inflatable element is fixed, while a second end slides on the mandrel. Both the first and second ends of the second inflatable element are slidable on the mandrel, and the first end of the second inflatable element is coupled to the second end of the first inflatable element. The inflatable elements are inflated separately, with the first inflatable element inflated first until it seats against the wellbore wall. As the first inflatable element expands radially and contracts axially, the second inflatable element moves in axial concert with the first inflatable element so as to maintain a fixed distance between the two inflatable elements.

    CORRECTION OF DISTORTED GRADIENT DISTRIBUTIONS IN NUCLEAR MAGNETIC RESONANCE LOGGING

    公开(公告)号:WO2023033811A1

    公开(公告)日:2023-03-09

    申请号:PCT/US2021/048493

    申请日:2021-08-31

    Abstract: Methods for correcting a gradient distribution in downhole NMR logging are described herein. NMR data is inverted using an effective gradient to obtain an apparent T2 distribution having a first main peak and a distortion caused by a second spurious peak. The first main peak corresponds to the effective gradient. The distortion in the apparent T2 distribution is then corrected by integrating the signal corresponding to the spurious peak into the signal corresponding to the main peak. The corrected apparent T2 distribution and the effective gradient are then used to interpret the NMR data. Thereafter, the interpreted data is used to determine one or more characteristics of the surrounding subsurface rock formation media.

    WELL FLOW CONTROL USING DELAYED SECONDARY SAFETY VALVE

    公开(公告)号:WO2022231635A1

    公开(公告)日:2022-11-03

    申请号:PCT/US2021/031154

    申请日:2021-05-06

    Abstract: A flow control system for a well includes a primary safety valve and a secondary safety valve for controlling flow from production tubing in the well. The primary safety valve includes a first valve body, a first flapper, a first control line port for receiving control fluid pressure from a control line, and a first actuator operable to open the first flapper in response to the control fluid pressure. The secondary safety valve is disposable within the valve body of the primary safety valve. The secondary safety valve also includes a second valve body, a second flapper, a second control line port for receiving control fluid pressure from the same control line as the primary safety valve when the secondary safety valve is disposed in the first valve body of the primary safety valve, and an actuator operable to open the second flapper in response to the control fluid pressure. A choke in fluid communication with the second control line port delays a closing of the second flapper relative to a closing of the first flapper in response to a decrease in the control fluid pressure.

    TRAVEL JOINT FOR TUBULAR WELL COMPONENTS
    7.
    发明申请

    公开(公告)号:WO2022115630A1

    公开(公告)日:2022-06-02

    申请号:PCT/US2021/060858

    申请日:2021-11-24

    Abstract: An apparatus for downhole connection of well components includes a first tubular component defining a through bore for receiving a second tubular component and a travel joint including an axially moveable inner sleeve and a coupling feature configured for coupling the second tubular component with the inner sleeve when received in the through bore of the first tubular component.

    ELECTRICAL TRANSMISSION IN A WELL USING WIRE MESH

    公开(公告)号:WO2022115629A1

    公开(公告)日:2022-06-02

    申请号:PCT/US2021/060857

    申请日:2021-11-24

    Abstract: A well system incorporates electrically conductive mesh providing robust, reliable electrical communication pathways along portions of tubular equipment. An example system comprises a tubular string disposed in a wellbore, such as a multilateral wellbore. The tubular string defines an internal fluid flow path for conveying fluids to or from a surface of a wellsite. The tubular string also includes a plurality of well components with tubular component bodies arranged along the tubular string. An electrical network along the tubular string interconnects the well components. The electrical network comprising a transmission path defined at least in part by a mesh sleeve disposed along the tubular string around the internal fluid flow path.

    DEEP LEARNING METHODS FOR ENHANCING BOREHOLE IMAGES

    公开(公告)号:WO2022086568A1

    公开(公告)日:2022-04-28

    申请号:PCT/US2020/058115

    申请日:2020-10-30

    Abstract: A method for enhancing a formation property image may include taking at least one set of formation property measurements with a borehole imaging device, arranging the at least one set of formation property measurements into a two-dimensional image with a buffer, feeding the two-dimensional image into a deep-learning neural network (DNN), and forming a corrected formation property image from the two-dimensional image. The method may further include inverting the at least one set of formation property measurements to form at least one set of inverted formation property measurements and arranging the at least one set of inverted formation property measurements into a two-dimensional image with a buffer.

    WORK METHOD TO DESIGN FOR THICKENING TIME BY TAILORING ADDITIVES

    公开(公告)号:WO2022010494A1

    公开(公告)日:2022-01-13

    申请号:PCT/US2020/042275

    申请日:2020-07-16

    Abstract: A method of designing a cement slurry may include: (a) selecting at least a cement and concentration thereof, a water and concentration thereof, and one or more chemical additives and a concentration thereof such that a cement slurry formed from the cement, water, and the one or more chemical additives meet a density requirement; (b) calculating a thickening time of the cement slurry using a thickening time model; (c) comparing the thickening time of the cement slurry to a thickening time requirement, wherein steps (a)-(c) are repeated if the thickening time of the cement slurry does not meet or exceed the thickening time requirement, wherein the step of selecting comprises selecting concentrations and/or different chemical identities for the one or more chemical additives, cement, or water, or step (d) is performed if the thickening time of the cement slurry meets or exceeds the thickening time requirement; and (d) preparing the cement slurry.

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