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    HYDRAULIC INTEGRITY ANALYSIS
    581.
    发明公开
    HYDRAULIC INTEGRITY ANALYSIS 审中-公开

    公开(公告)号：US20240287899A1

    公开(公告)日：2024-08-29

    申请号：US18657136

    申请日：2024-05-07

    Applicant: Conocophillips Company

    Inventor： David D. CRAMER

    IPC: E21B49/00 ,  E21B33/12 ,  E21B43/116 ,  E21B43/26 ,  E21B47/06

    CPC classification number: E21B49/008 ,  E21B33/12 ,  E21B43/116 ,  E21B47/06 ,  E21B43/26

    Abstract: An economical process in which cement sheath integrity, perforation cluster spacing and frac plug integrity can be assessed for every frac stage, potentially leading to improvements in stimulation, completion, cementing and drilling practices. It is based on analyzing wellbore pressure responses occurring at key segments of the wireline pump-down and perforating operation and correlating the results among multiple frac stages and wells in a field or play. A special requirement is that the frac ball (ball check) is inserted in the frac plug and pumped to seat prior to performing perforating operations. A complementary benefit of this process is that selectively establishing injectivity in the most distant perforation cluster can be used to establish inhibited HCl acid (wireline acid) coverage across all perforation intervals for uniform reduction in near-wellbore tortuosity.

    Hydraulic integrity analysis
    586.
    发明授权
    Hydraulic integrity analysis 有权

    公开(公告)号：US12006819B2

    公开(公告)日：2024-06-11

    申请号：US17577848

    申请日：2022-01-18

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： David D. Cramer

    IPC: E21B43/116 ,  E21B33/12 ,  E21B47/06 ,  E21B49/00 ,  E21B43/26

    CPC classification number: E21B49/008 ,  E21B33/12 ,  E21B43/116 ,  E21B47/06 ,  E21B43/26

    Abstract: An economical process in which cement sheath integrity, perforation cluster spacing and frac plug integrity can be assessed for every frac stage, potentially leading to improvements in stimulation, completion, cementing and drilling practices. It is based on analyzing wellbore pressure responses occurring at key segments of the wireline pump-down and perforating operation and correlating the results among multiple frac stages and wells in a field or play. A special requirement is that the frac ball (ball check) is inserted in the frac plug and pumped to seat prior to performing perforating operations. A complementary benefit of this process is that selectively establishing injectivity in the most distant perforation cluster can be used to establish inhibited HCl acid (wireline acid) coverage across all perforation intervals for uniform reduction in near-wellbore tortuosity.

    Dissolvable sleeve for hydrocarbon well completions
    587.
    发明授权
    Dissolvable sleeve for hydrocarbon well completions 有权

    公开(公告)号：US12006466B2

    公开(公告)日：2024-06-11

    申请号：US17832149

    申请日：2022-06-03

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： James Rutherford ,  Roy Middleton

    IPC: C09K8/40

    CPC classification number: C09K8/40

    Abstract: The invention relates to the use of a sleeve (9) installed in a liner or casing (1) prior to a cementing operation. Completion equipment in the liner/casing creates an irregular inner profile which can cause cement to get trapped. A wiper dart (3) passed down the casing/liner (1) may have difficulty removing all residual cement (5). By using a sleeve or insert (8) in the liner/casing (1), a smooth inner profile (9) may be created which can be cleaned relatively easily by a wiper dart. Once cementing and cleaning are complete, the sleeve (9) may be removed by wellbore fluid or acid if it is made from a dissolvable material such as aluminum or magnesium.

    Method and apparatus for milling a window in casing
    588.
    发明授权
    Method and apparatus for milling a window in casing 有权

    公开(公告)号：US12000226B2

    公开(公告)日：2024-06-04

    申请号：US17457341

    申请日：2021-12-02

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Kenneth Maribu ,  John Gary Eller ,  Anthony Ryan

    IPC: E21B29/06 ,  E21B29/04 ,  E21B29/12

    CPC classification number: E21B29/06 ,  E21B29/04 ,  E21B29/12

    Abstract: A process is described for milling a window in the casing (2) of an oil or gas producing well, for example in order to drill a lateral well branching off from the main well. A wireline milling tool is first used, in a relatively low cost operation, to create a small window (14) or notch in the casing (2). Provided a small window (14) or notch can be created successfully, an expensive heavy duty coil tubing milling operation can then be conducted to create the full window, some 4-6 feet in length. Previous attempts to create a full window using wireline tools have encountered difficulties due to there being no circulating drilling fluid to remove metal swarf and due to the need for the tool to be supported by casing during the milling operation, when the integrity of the casing is being compromised by drilling the window. The proposed wireline tool has an actuator (4) with relatively small stroke length and a relatively small container (8) to manage the swarf produced by the milling process.

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