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193 条记录 (耗时 0.013 秒)

    Perforating gun system and method
    66.
    发明授权
    Perforating gun system and method 有权

    公开(公告)号：US10914143B2

    公开(公告)日：2021-02-09

    申请号：US15546876

    申请日：2015-03-26

    申请人： Halliburton Energy Services, Inc.

    发明人： Kevin S. Harive ,  Christopher M. Heering

    IPC分类号： E21B43/117 ,  E21B43/119 ,  E21B33/12 ,  E21B37/08 ,  E21B43/11 ,  E21B43/116 ,  F42B12/10

    摘要： A single-trip method and system for perforating casing allows displacement of a heavier completion fluid from the perforation zone by a lighter formation-compatible treatment fluid without the need for an extended rat hole or repositioning the working string. The perforating system includes bridge subs located above and below a perforating gun. The bridge subs bypass treatment fluid around the gun through one or more conduits located along the exterior of the gun into a discharge flow port located immediately below the lower bridge sub. The system may be hydrodynamically designed to maintain efficient fluid displacement characteristics of the discharge flow port. The external conduits are positioned to not interfere with perforation operations and may include parallel conjoined tubes. The perforating system may be lowered to a perforation position in the wellbore, and treatment fluid pumped through the discharge flow port to displace completion fluid prior to perforation operations.

    Method of sealing and securing a shaped charge
    67.
    发明授权
    Method of sealing and securing a shaped charge 有权

    公开(公告)号：US10859350B1

    公开(公告)日：2020-12-08

    申请号：US16209318

    申请日：2018-12-04

    申请人： Harry Arnon

    发明人： Harry Arnon

    IPC分类号： F42B12/82 ,  F42B1/028 ,  F42B3/26 ,  F42B3/10 ,  F42B1/036 ,  F42B12/10

    摘要： A method of sealing and securing of a shaped charge comprising a casing having a detonator, an explosive filler disposed within the casing having a cavity formed therein, and a liner disposed over the explosive filler. The method includes coating at least one portion of the shaped charge with a curable sealant, and exposing the curable sealant to radiation to cure the curable sealant. The radiation may be in the ultraviolet range and have a wavelength in a range of from about 200 to about 400 nanometers. In addition, the at least one portion of the shaped charge that is coated with the curable sealant may be a surface of the liner, a joint between the liner and the casing, over the detonator, or any combination thereof. The liner may comprise a metallic liner.

    Fragmentation sleeve for an ammunition body
    68.
    发明授权
    Fragmentation sleeve for an ammunition body 有权

    公开(公告)号：US10739119B2

    公开(公告)日：2020-08-11

    申请号：US16068184

    申请日：2016-01-15

    申请人： SAAB BOFORS DYNAMICS SWITZERLAND LTD.

    发明人： Bruno Grunder ,  Markus Conrad ,  Christian Herren

    IPC分类号： F42B12/32 ,  F42B12/10 ,  F42B12/28

    摘要： Fragmentation sleeve (1), for a generally circular cylindrically shaped ammunition body (2), whereby the sleeve (1) has an annular shape with an inner diameter at no place smaller than the outer diameter of the ammunition body (2), an outer diameter Da, an internal surface Si, an external surface Sa, and a height H, the sleeve is configured to be slid over and positioned on an outer surface (3) of the ammunition body (2) and comprises a plurality of fragments (4) embedded in a polymeric matrix (5).