PIPELINE PIG WITH RETRACTABLE SCRAPER
    12.
    发明公开

    公开(公告)号:US20240091827A1

    公开(公告)日:2024-03-21

    申请号:US17949686

    申请日:2022-09-21

    CPC classification number: B08B9/0553 F16L55/28 F16L2101/30

    Abstract: Systems and methods for cleaning an internal bore of a tubular member with a pipeline pig include a pipeline pig having a pig body with a fore end and an aft end opposite the fore end. A cup circumscribes the pig body, where an outer diameter lip of the cup engages a surface of the internal bore of the tubular member. A scraper assembly includes a scraper arm extending radially outward from the pig body and a spring biasing the scraper arm in a radially outward direction. A load cell is positioned to measure a movement of the scraper arm in a radially inward direction. A treatment trigger is actuated by a treatment signal from the load cell to deliver a treatment system to the internal bore of the tubular member, where the treatment signal is generated by the movement of the scraper arm in the radially inward direction.

    SELF-POWERED DOWNHOLE INJECTION SYSTEMS AND METHODS FOR OPERATING THE SAME

    公开(公告)号:US20240003233A1

    公开(公告)日:2024-01-04

    申请号:US18469277

    申请日:2023-09-18

    Inventor: Tao Chen Qiwei Wang

    CPC classification number: E21B43/12 E21B33/068 E21B34/02 E21B47/00

    Abstract: A downhole injection system in selective communication with a wellhead assembly and a wellbore, the downhole injection system including a pumping chamber in selective communication with the wellhead assembly, the pumping chamber defining a wellhead pressure portion defining a wellhead pressure inlet in selective communication with the wellhead assembly and a wellhead pressure outlet in selective communication with the wellhead assembly, where the wellhead pressure portion is maintained at a wellhead pressure, and a chemical portion in selective communication with the wellbore, and a movable plate positioned within the pumping chamber, where the chemical portion is separated from the wellhead pressure portion by the movable plate.

    Methods for targeted chemical treatment of well bores

    公开(公告)号:US11486242B2

    公开(公告)日:2022-11-01

    申请号:US17159787

    申请日:2021-01-27

    Abstract: A method for wellbore treatment. The method including preparing an encapsulated treatment agent via polymerization, feeding the encapsulated treatment agent into the wellbore, delivering the encapsulated treatment agent to a desired depth within a formation in the wellbore, activating an acoustic or an electromagnetic source at the desired depth within the formation, and generating an acoustic field or an electromagnetic field. The acoustic field or electromagnetic field activates the encapsulant thereby releasing the treatment agent into the wellbore and a desired depth.

    Iron sulfide inhibitor suitable for squeeze application

    公开(公告)号:US11466196B2

    公开(公告)日:2022-10-11

    申请号:US16804876

    申请日:2020-02-28

    Abstract: A polymeric scale inhibitor composition and a method for inhibiting metal sulfide scale formation in a well are provided. The composition includes 80-82 mol % of a first monomeric unit, where the first monomeric unit is 2-acrylamido-2-methylpropane sulfonic acid (AMPS). The composition also includes 2-18 mol % of a second monomeric unit selected from N-vinyl formamide, N-vinyl pyrrolidone, and diallyl dimethyl ammonium chloride. The composition further includes 2-18 mol % of a third monomeric unit selected from acrylic acid, methacrylic acid, esters of acrylic acid or methacrylic acid with an alcohol having 1 to 4 carbon atoms, and carboxyethyl acrylate. The polymeric scale inhibitors show superior adsorption characteristics on rocks and their subsequent release behavior allows for scale inhibition over extended time periods respectively at a significant volume of coreflood fluids. They are especially suited for downhole application via field scale squeeze treatments.

    SELF-POWERED DOWNHOLE INJECTION SYSTEMS AND METHODS FOR OPERATING THE SAME

    公开(公告)号:US20220259954A1

    公开(公告)日:2022-08-18

    申请号:US17174445

    申请日:2021-02-12

    Inventor: Tao Chen Qiwei Wang

    Abstract: A downhole injection system in selective communication with a wellhead assembly and a wellbore, the downhole injection system including a pumping chamber in selective communication with the wellhead assembly, the pumping chamber defining a wellhead pressure portion defining a wellhead pressure inlet in selective communication with the wellhead assembly and a wellhead pressure outlet in selective communication with the wellhead assembly, where the wellhead pressure portion is maintained at a wellhead pressure, and a chemical portion in selective communication with the wellbore, and a movable plate positioned within the pumping chamber, where the chemical portion is separated from the wellhead pressure portion by the movable plate.

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