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    Segment Pressing Of Shaped Charge Powder Metal Liners
    2.
    发明公开
    Segment Pressing Of Shaped Charge Powder Metal Liners 审中-公开

    公开(公告)号：US20230364673A1

    公开(公告)日：2023-11-16

    申请号：US17741209

    申请日：2022-05-10

    申请人： Halliburton Energy Services, Inc.

    发明人： Christopher C. Hoelscher ,  Joseph Todd MacGillivray ,  James M. Barker

    IPC分类号： E21B43/117 ,  F42B1/028 ,  F42B33/02

    CPC分类号： E21B43/117 ,  F42B1/028 ,  F42B33/025

    摘要： A shaped charge liner may include a plurality of liner segments for a shaped charge configured to perforate a sidewall of a wellbore upon detonation. The plurality of liner segments may include a tip liner segment comprising a first group of compacted metal powder having a hollow cone shape with a trailing interface end disposed opposite a tip end. The tip liner segment is configured to be disposed in a shaped charge casing of the shaped charge. The plurality of liner segments may also include a base liner segment comprising a second group of compacted metal powder having a truncated hollow cone shape with a trailing base end disposed opposite a leading base interface end. The trailing base end has a larger diameter than the leading base interface end, and the base liner segment is configured to be disposed at least partially within the shaped charge casing.

    PERFORATOR HAVING MOVABLE CLUSTERS OF PERFORATOR GUNS
    4.
    发明申请
    PERFORATOR HAVING MOVABLE CLUSTERS OF PERFORATOR GUNS 审中-公开

    公开(公告)号：US20190271214A1

    公开(公告)日：2019-09-05

    申请号：US16348900

    申请日：2017-02-03

    申请人： Halliburton Energy Services, Inc.

    发明人： Richard Ellis Robey ,  Christopher C. Hoelscher

    IPC分类号： E21B43/117

    摘要： An apparatus comprises a first cluster of perforator guns positioned circumferentially around a central longitudinal axis at a first axial position. The apparatus includes a second cluster of perforator guns positioned circumferentially around the central longitudinal axis at a second axial position. The first and second clusters are configured in a closed position while the apparatus is being lowered to a perforator position in a wellbore. After the apparatus is lowered to the perforator position, the first and second clusters are to move to an expanded position and the first cluster is to move axially such that the first cluster and the second cluster at least partially overlap.

    APPARATUS AND METHOD FOR BEHIND CASING WASHOUT
    6.
    发明申请
    APPARATUS AND METHOD FOR BEHIND CASING WASHOUT 有权

    公开(公告)号：US20220178218A1

    公开(公告)日：2022-06-09

    申请号：US17603069

    申请日：2019-04-24

    申请人： Halliburton Energy Services, Inc.

    发明人： Thomas Earl Burky ,  Christopher C. Hoelscher ,  James Marshall Barker

    IPC分类号： E21B29/02 ,  E21B43/117 ,  E21B33/134

    摘要： Provided is a casing washout perforating gun assembly for use in a wellbore. The casing washout perforating gun assembly, in one example, includes a carrier gun body, an uphole plurality of charges supported within the carrier gun body, and a downhole plurality of charges supported within the carrier gun body. According to this example, the uphole plurality of charges have an uphole size or uphole explosive design to perforate uphole openings having uphole opening areas within a wellbore casing, and the downhole plurality of charges have a different downhole size or different downhole explosive design to perforate downhole openings having downhole opening areas within the wellbore casing, and furthermore the downhole opening areas are at least 20 percent less than the uphole opening areas.

    Pressure activated firing heads, perforating gun assemblies, and method to set off a downhole explosion
    7.
    发明授权
    Pressure activated firing heads, perforating gun assemblies, and method to set off a downhole explosion 有权

    公开(公告)号：US11346192B2

    公开(公告)日：2022-05-31

    申请号：US16862268

    申请日：2020-04-29

    申请人： Halliburton Energy Services, Inc.

    发明人： Christopher C. Hoelscher ,  Mark D. Macek

    IPC分类号： E21B43/1185

    摘要： The disclosed embodiments include pressure-activated firing heads, perforating gun assemblies, and methods to set off a downhole explosion. A pressure-activated firing head includes a first chamber and a second chamber having an energy storage element disposed within the second chamber. The pressure-activated firing head also includes a port fluidly connecting the first chamber and the second chamber. The pressure-activated firing head further includes a flow restrictor that restricts fluid flow from the second chamber to the first chamber. The pressure-activated firing head further includes a firing pin shiftable from a first position to a second position to strike an initiator. The pressure-activated firing head further includes a shear pin that holds the firing pin in the first position and configured to shear in response to a threshold pressure applied to the shear pin to release the firing pin from the first position.

    Self-sealing perforating apparatus
    9.
    发明授权
    Self-sealing perforating apparatus 有权

    公开(公告)号：US10329885B2

    公开(公告)日：2019-06-25

    申请号：US15315055

    申请日：2014-07-22

    申请人： HALLIBURTON ENERGY SERVICES, INC.

    发明人： Jeffery Richard Acker ,  Christopher C. Hoelscher

    IPC分类号： E21B43/119 ,  E21B33/138 ,  E21B43/117 ,  E21B33/13 ,  E21B43/10 ,  E21B43/11

    摘要： A perforating apparatus incorporating a selective self-sealing material is disclosed for sealing exit holes in a wall of the apparatus resulting from perforation operations. The perforating apparatus traps debris produced during downhole perforation operations and prevents the debris from entering the wellbore which avoids the need for remedial operations to remove debris from the wellbore. The self-sealing material may be disposed within the perforating apparatus adjacent to an interior surface of the wall or the self-sealing material may be disposed outside the perforating apparatus adjacent to an exterior surface of the wall. The self-sealing material may include an expandable polymer material, a swelling elastomer, a rubber and combinations thereof.

    Low-debris low-interference well perforator
    10.
    发明授权
    Low-debris low-interference well perforator 有权

    公开(公告)号：US10151180B2

    公开(公告)日：2018-12-11

    申请号：US15736455

    申请日：2015-07-20

    申请人： Halliburton Energy Services, Inc.

    发明人： Richard E. Robey ,  Christopher C. Hoelscher

    IPC分类号： E21B43/117

    摘要： A low-debris low-interference semi-solid well perforator having selectively variable free volume and method for providing such is disclosed according to one or more embodiments. The perforator may include a charge tube holding an independently floating axial stack of selectively variable divider segments, each having one or more concavities formed in upper and lower sides. The segments are arranged so that concavities of adjacent segments form sockets, into which shaped charges are located. The segments provide support to minimize deformation of shaped charge cases yet provide less than 360 degrees circumferential contact about the shaped charges to form selectively variable voids for collecting debris and spall resulting from detonation. The voids and floating segments attenuate detonation shock interference. A debris guard prevents debris from entering the wellbore. Relieving slots in the debris guard attenuates transmission of shock interference through the debris guard.