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公开(公告)号：US10287868B2
公开(公告)日：2019-05-14
申请号：US15039800
申请日：2015-11-30
发明人： Darren Phillip Walters , Kevin Scott Harive , Thomas Earl Burky , Christopher Thaddeous Linsky , Iosif Hriscu
IPC分类号： E21B43/295 , E21B43/243 , E21B36/00
摘要： A system and a method for underground gasification comprising a downhole ignition device. The downhole ignition device may comprise a connection housing at a first end of the downhole ignition device. The connection housing may comprise an igniter and a first fire mix. The downhole ignition device may further comprise a body coupled to the connection housing. The body may comprise pyrotechnic modules arranged in series and additional first fire mix. A cap may be disposed at a second end of the connection housing. Additionally, the downhole ignition device may comprise a supply line and a recovery system. A method for igniting an underground energy source may comprise positioning a downhole ignition device adjacent an underground energy source in a wellbore, igniting a first fire mix in the downhole ignition device, and igniting a series of pyrotechnic modules arranged in the downhole ignition device.
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公开(公告)号：US10982512B1
公开(公告)日：2021-04-20
申请号：US16657216
申请日：2019-10-18
IPC分类号： E21B43/116 , E21B47/06 , E21B47/07 , E21B43/1185
摘要： A wellbore perforating apparatus and method according to which a perforating gun and a sensor sub are run into a wellbore toward a downhole location at which the wellbore is to be perforated. Detonable components of the perforating gun are energized to perforate the wellbore at the downhole location. An acceleration of the perforating gun and a pressure and a temperature of the wellbore are detected using the sensor sub during a time interval encompassing the energization of the detonable components. The detected acceleration, pressure, and temperature are compared to benchmark energetic responses for both detonation and deflagration events. Based on this comparison, a decision can be made as to whether an incubation period is needed to allow a reaction of the detonable components to weaken before retrieving the perforating gun from the wellbore.
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公开(公告)号：US20210062601A1
公开(公告)日：2021-03-04
申请号：US16961744
申请日：2018-04-06
摘要： A downhole tubular cutting system includes a cutter comprising an explosive material configured to cut a tubular. The system further includes a generator body coupled to the cutter on an end of the cutter such that the generator body will be oriented uphole or downhole of the cutter when the cutter is positioned with the tubular. A detonating cord or igniter fuse is disposed around the generator body.
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公开(公告)号：US10590746B2
公开(公告)日：2020-03-17
申请号：US15570921
申请日：2016-12-02
摘要： A thermal battery positioned in a wellbore can be force activated by a device. The device can include a body coupled to a thermal battery positioned in a wellbore. The body can include a piston retained at a first position in an inner area of the body. The piston can move from the first position to a second position in response to a force applied to the body. The thermal battery can be activated by moving the piston to the second position.
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公开(公告)号：US10415945B2
公开(公告)日：2019-09-17
申请号：US15510267
申请日：2014-10-10
IPC分类号： F42D1/05 , E21B43/1185 , F42D1/04
摘要： An assembly can include solid-state overvoltage firing switch operable to control an explosive device. The solid-state overvoltage firing switch can include a substrate layer. The solid-state overvoltage firing switch can also include a conductive anode and a conductive cathode positioned on the substrate layer. A gap can physically separate the conductive anode from the conductive cathode. The conductive anode can be operable to receive a voltage from a power source. The solid-state overvoltage firing switch can further include an insulator layer adjacent to the conductive anode and the conductive cathode. At least part of the insulator layer can fill the gap. The insulator layer can cover a first portion of the conductive anode and a second portion of the conductive cathode.
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公开(公告)号：US11920418B2
公开(公告)日：2024-03-05
申请号：US17603069
申请日：2019-04-24
IPC分类号： E21B29/02 , E21B33/134 , E21B43/117
CPC分类号： E21B29/02 , E21B33/134 , E21B43/117
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.
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公开(公告)号：US10677572B2
公开(公告)日：2020-06-09
申请号：US16171758
申请日：2018-10-26
IPC分类号： F42B1/024 , E21B43/117 , E21B43/1185 , E21B43/116
摘要： The disclosure relates to perforating systems for perforating the casing of a wellbore. The perforating systems contain insensitive high explosives. The disclosure also relates to shaped charges containing insensitive high explosives for use in such perforating systems. The disclosure further relates to methods of using such perforating systems to perforate the casing of a wellbore.
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公开(公告)号：US10590706B2
公开(公告)日：2020-03-17
申请号：US15573986
申请日：2015-07-02
IPC分类号： E21B7/00 , E21B43/117 , E21B33/13 , E21B43/119 , F42B1/028 , E21B29/02 , E21B7/06 , E21B47/024 , E21B7/04 , E21B41/00
摘要： In accordance with embodiments of the present disclosure, systems and methods for establishing hydraulic communication between a relief wellbore and a target wellbore during relief well applications are provided. Present embodiments include a perforating gun that uses an explosively formed penetrator (EFP) to establish hydraulic communication between a relief well and the target well for well kill operations. The EFP may be detonated downhole according to the Misznay-Schardin effect, thereby releasing a projectile toward the target well to form a relatively large hole through the casing/cement between the wellbores. The EFP may be positioned in a desired orientation with respect to the target well, in order that the projectile may be directed from the relief well directly into the target well. In some embodiments, the disclosed perforating gun may include several EFP charges positioned along one side of the gun at approximately 0 to 10 degree phasing from each other.
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公开(公告)号：US20200033101A1
公开(公告)日：2020-01-30
申请号：US15564472
申请日：2016-12-28
发明人： Thomas Earl Burky
IPC分类号： F42B3/04 , E21B43/117 , E21B43/1185 , F42B3/02
摘要： This disclosure provides a stackable propellant module for use inside of a gas generation canister. The modules are designed to enable them to be individually fired rather than as a unitary mass, as done in conventional configurations. This enables the generation of a controlled pressure profile rather than an uncontrolled pressure profile determined by the environmental conditions downhole, such as temperature and pressure.
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公开(公告)号：US20170241244A1
公开(公告)日：2017-08-24
申请号：US15501204
申请日：2014-09-03
IPC分类号： E21B43/116 , E21B43/1185 , E21B43/117
CPC分类号： F42B1/024 , E21B43/116 , E21B43/117 , E21B43/1185 , E21B43/11857
摘要： The disclosure relates to perforating systems for perforating the casing of a wellbore. The perforating systems contain insensitive high explosives. The disclosure also relates to shaped charges containing insensitive high explosives for use in such perforating systems. The disclosure further relates to methods of using such perforating systems to perforate the casing of a wellbore
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