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公开(公告)号：US10954761B2
公开(公告)日：2021-03-23
申请号：US16908053
申请日：2020-06-22
IPC分类号： E21B43/117 , E21B43/263
摘要： A perforating tool assembly may be modularized by providing modular charge segments to provide for multiple configurations of shaped charges without the requirement of excess inventory. The modular charge segments may comprise any number of modular charge holder segments and modular charge spacer segments which are configured to provide for different spacings and offsets of shaped charges disposed within the modular charge holder segments. The modular charge holder segments include slots and locking tabs to allow for the differing offsets between charges. The modular charge holder segments may comprise a slit that allows the modular holder segment to be flexed or deflected to permit the loading and downloading of shaped charges. The modular charge segments may comprise a plastic or rubber material to provide for safer deployment of shaped charges downhole.
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公开(公告)号：US10941632B2
公开(公告)日：2021-03-09
申请号：US15781577
申请日：2016-01-27
IPC分类号： E21B43/116 , E21B34/06 , E21B47/06 , E21B43/119 , E21B21/08 , E21B36/00 , E21B43/117 , F16K31/00 , F15B15/19
摘要： A system and method of controlling a dynamic time-pressure profile associated with a perforation event that includes extending a perforation assembly within a casing string; firing a perforation gun of the perforation assembly; measuring, using a sensor of the perforation assembly, pressure within the casing string, wherein the measured pressure forms the dynamic time-pressure profile; identifying a first measured pressure within the dynamic time-pressure profile; identifying, using a controller of the perforation assembly, a first difference between the first measured pressure and a first reference pressure; and adjusting, using a first pressure generator of the perforation assembly, the pressure in response to the first difference to control the dynamic time-pressure profile; wherein the sensor, the controller, and the first pressure generator provide a feedback control loop.
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公开(公告)号：US20190271214A1
公开(公告)日：2019-09-05
申请号：US16348900
申请日：2017-02-03
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.
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公开(公告)号：US20180306010A1
公开(公告)日：2018-10-25
申请号：US15565556
申请日：2016-12-30
IPC分类号： E21B43/117
CPC分类号： E21B43/117 , E21B43/263
摘要： A perforating tool assembly may be modularized by providing modular charge segments to provide for multiple configurations of shaped charges without the requirement of excess inventory. The modular charge segments may comprise any number of modular charge holder segments and modular charge spacer segments which are configured to provide for different spacings and offsets of shaped charges disposed within the modular charge holder segments. The modular charge holder segments include slots and locking tabs to allow for the differing offsets between charges. The modular charge holder segments may comprise a slit that allows the modular holder segment to be flexed or deflected to permit the loading and downloading of shaped charges. The modular charge segments may comprise a plastic or rubber material to provide for safer deployment of shaped charges downhole.
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公开(公告)号：US11174690B2
公开(公告)日：2021-11-16
申请号：US16590578
申请日：2019-10-02
IPC分类号： E21B23/00 , E21B34/10 , E21B23/04 , E21B43/116
摘要： Provided is a pressure cycle actuation assembly. The pressure cycle actuation assembly, in one aspect, includes a housing, a reciprocating piston located within the housing and defining first and second fluid chambers, and a check valve positioned between the first and second fluid chambers, the check valve permitting fluid flow from the first fluid chamber to the second fluid chamber but preventing fluid flow from the second fluid chamber to the first fluid chamber. The A pressure cycle actuation assembly, according to this aspect, further includes a flow restrictor positioned between the first and second fluid chambers, the flow restrictor restricting fluid flow between the first fluid chamber and the second fluid chamber, and a rotating collet coupled to the reciprocating piston, the rotating collet translating reciprocal axial motion of the reciprocating piston into one-direction rotation and axial lengthening or shortening of the rotating collet relative to the reciprocating piston.
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公开(公告)号：US11136867B2
公开(公告)日：2021-10-05
申请号：US16639504
申请日：2017-11-15
IPC分类号： E21B43/119 , E21B43/117 , F42D1/02
摘要： A perforating gun including a carrier having a longitudinal length, one or more energetic devices received within the carrier configured to produce one or more mechanical waves, and one or more wave manipulators disposed along the longitudinal length of the carrier. The one or more wave manipulators generate an altered wave in an opposite travel direction of one or more mechanical waves traveling along the longitudinal length of the carrier.
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公开(公告)号：US10920541B2
公开(公告)日：2021-02-16
申请号：US15774483
申请日：2017-01-06
IPC分类号： E21B43/112 , E21B43/117
摘要： The present disclosure provides an perforating device for use within a wellbore. The perforating device comprises a center member having a length, an expansion tool positioned about the center member along at least a portion of the length, and a plurality of perforating guns positioned about the expansion tool, each of the plurality of perforating guns configured to carry one or more explosive shaped charges. The expansion tool is configured to move the plurality of perforating guns radially outward toward a wellbore target of a wellbore it is configured to be positioned within.
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公开(公告)号：US20200284125A1
公开(公告)日：2020-09-10
申请号：US15774483
申请日：2017-01-06
IPC分类号： E21B43/112 , E21B43/117
摘要： The present disclosure provides an perforating device for use within a wellbore. The perforating device comprises a center member having a length, an expansion tool positioned about the center member along at least a portion of the length, and a plurality of perforating guns positioned about the expansion tool, each of the plurality of perforating guns configured to carry one or more explosive shaped charges. The expansion tool is configured to move the plurality of perforating guns radially outward toward a wellbore target of a wellbore it is configured to be positioned within.
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公开(公告)号：US20200088013A1
公开(公告)日：2020-03-19
申请号：US16509806
申请日：2019-07-12
IPC分类号： E21B43/116
摘要： An apparatus and method according to which a perforating gun includes a volume fill body. The volume fill body is positioned in the space between a charge tube and a carrier tube. The fill body occupies at least part, and sometimes all, of the free volume space between the charge tube and carrier tube thereby reducing the free volume space. In certain downhole applications, large free volume space can lead to significant reductions in wellbore pressure, causing dynamic underbalance, which is undesirable. The presence of the volume fill body prevents, or at least reduces, dynamic underbalance and its effects. Also, the volume fill body aligns the charge tube with the carrier tube, further assisting perforation.
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公开(公告)号：US10082008B2
公开(公告)日：2018-09-25
申请号：US15323921
申请日：2014-08-06
IPC分类号： E21B43/117 , F42B1/032 , F42B3/28
CPC分类号： E21B43/117 , F42B1/032 , F42B3/28
摘要： In accordance with embodiments of the present disclosure, a perforating system for perforating a subterranean formation includes a carrier gun body having a cylindrical sleeve. The perforating system also includes a charge holder disposed in the cylindrical sleeve and a plurality of charges disposed on the charge holder. The charge holder is dissolvable in at least one wellbore fluid delivered through the carrier gun body after detonation of the charges. The charges may also be dissolvable during or after detonation. In some embodiments, the carrier gun body is dissolvable wellbore fluid delivered through the carrier gun body. By including dissolvable parts, the disclosed perforating gun yields relatively lower amounts of debris in the wellbore after detonation. In addition, the dissolving portions of the perforating gun allow the remaining portions of the gun to be used to perform wellbore operations downhole without pulling the perforating gun.
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