公开(公告)号：US5633475A

公开(公告)日：1997-05-27

申请号：US613128

申请日：1996-03-08

Applicant: Manmohan S. Chawla

Inventor： Manmohan S. Chawla

IPC: E21B43/116 ,  F42B1/00 ,  F42B1/02 ,  F42B12/10

CPC classification number: E21B43/116 ,  F42B1/00

Abstract: An apparatus for generating a large perforation in a target such as a wellbore casing. A recess in a housing has a closed end and an open end facing the target. A shaped liner in the recess has an apex facing the recess open end, and has a base end facing the closed end of the recess. The shaped liner defines an interior volume filled with explosive material. The explosive material is detonated and expands the liner against the recess wall and forms a perforating jet which moves toward the recess open end. If the recess open end is circular, the perforating jet exits the recess as an annular jet which impacts the target and cuts a plug section from the target. The penetrating power of the jet is confined to the annular cutting area instead of being focused into a conventional jet shape. Multiple shaped liners can be placed in the recess, and the shape of the perforating jet can be modified by the liner shape and recess dimensions.

Abstract translation: 用于在诸如井筒壳体的靶中产生大的穿孔的装置。 壳体中的凹部具有封闭端和朝向目标的开口端。 凹槽中的成形衬垫具有面向凹部开口端的顶点，并且具有面向凹部的封闭端的基端。 成型的衬垫限定了充满爆炸材料的内部容积。 爆炸性材料被引爆并使衬套相对于凹口壁膨胀并且形成朝向凹口开口端移动的穿孔射流。 如果凹口开口端是圆形的，则穿孔喷射器作为环形喷射器离开凹部，该喷嘴冲击目标并从目标切割塞部分。 射流的穿透力限于环形切割区域，而不是聚焦成常规喷射形状。 多个形状的衬垫可以放置在凹槽中，并且穿孔射流的形状可以通过衬垫形状和凹槽尺寸来改变。

公开(公告)号：US5565644A

公开(公告)日：1996-10-15

申请号：US508335

申请日：1995-07-27

Applicant: Manmohan S. Chawla

Inventor： Manmohan S. Chawla

IPC: F42B1/024 ,  F42B1/02 ,  F42B12/10

CPC classification number: F42B1/024 ,  Y10S102/701

Abstract: An improved shaped charge for generating a jet. A lens shaped waveshaper is positioned within the explosive material of a shaped charge to modify the shape of the divergent detonation wave into a planar wave or a converging wave. The waveshaper is formed with a low sound speed material having a high index of refraction. By reshaping the detonation wave, the acceleration of the shaped charge liner is increased, and the penetration depth and hole size of the jet can be increased. The shaped charge operates more efficiently, thereby requiring less explosive material than a conventional shaped charge.

Abstract translation: 用于产生射流的改进的成形电荷。 透镜形状的波形器位于成形电荷的爆炸材料内，以将发散的爆震波的形状改变为平面波或会聚波。 波形形成有具有高折射率的低声速材料。 通过重构爆震波，成形的充气衬垫的加速度增加，并且可以增加射流的穿透深度和孔尺寸。 成形的电荷更有效地操作，因此比常规成形电荷需要更少的爆炸性材料。

公开(公告)号：US4860654A

公开(公告)日：1989-08-29

申请号：US736742

申请日：1985-05-22

Applicant: Manmohan S. Chawla ,  William A. McPhee

Inventor： Manmohan S. Chawla ,  William A. McPhee

IPC: E21B43/117 ,  F42B1/02 ,  F42B3/113

CPC classification number: E21B43/117 ,  F42B1/02 ,  F42B3/113

Abstract: An implosion shaped charge device for jet perforating. In its overall concept, the implosion shaped charge perforator comprises a liner of implosive geometry, a primary explosive contiguous to the liner for providing implosion impulse to such and means for detonating the primary explosive. In a first embodiment the detonating means is an explosively actuated impact detonator. In a second embodiment the detonating means is a laser initiated explosive detonator. Both embodiments may be utilized in a perforating gun for perforating subsurface earth formations. In the operation of the embodiments the primary explosive is detonated with the resulting detonation wave approximately constantly accelerating the liner to radially converge to a small volume, from which a jet is propagated in the direction of the maximum pressure gradient.

公开(公告)号：US08242447B1

公开(公告)日：2012-08-14

申请号：US12862719

申请日：2010-08-24

Applicant: Manmohan S. Chawla

Inventor： Manmohan S. Chawla

IPC: G01J1/00

CPC classification number: G01J3/42 ,  G01N21/3581 ,  G01N33/22

Abstract: An apparatus and method designed for generating and detecting reflected Terahertz waves using high-transition temperature (Tc) superconducting quantum devices (Josephson junctions) is described and the spectral response of reflected Terahertz radiation is mathematically analyzed to positively identify explosives strapped on a human or animal subject. This embodiment is well-suited for high traffic physical locations currently under surveillance such as security check points and also venues demanding significantly less obtrusive surveillance such as revolving entry doors, moving walkways, and entry gates of an airplane. The apparatus and method detects explosives through clothing without raising privacy concerns.

Abstract translation: 描述了使用高转变温度（Tc）超导量子器件（约瑟夫逊结）来产生和检测反射的太赫兹波的装置和方法，并且数学地分析反射的太赫兹辐射的光谱响应，以肯定地识别捆绑在人或动物上的爆炸物 学科。 该实施例非常适用于当前正在监视的高交通物理位置，例如安全检查点，以及要求显着较少的突击监视（例如旋转进入门，移动人行道和进入门）的场所。 该装置和方法通过服装检测爆炸物而不引起隐私问题。

公开(公告)号：US4669384A

公开(公告)日：1987-06-02

申请号：US814819

申请日：1985-12-30

Applicant: Manmohan S. Chawla ,  William A. McPhee

Inventor： Manmohan S. Chawla ,  William A. McPhee

IPC: C06B45/12 ,  F42B1/02

CPC classification number: C06B45/12 ,  F42B1/02

Abstract: A shaped charge perforating unit includes a housing having a cavity formed therein. An explosive charge of high explosive material is retained within the cavity by a liner of non-explosive material. The explosive charge consists of quantities of two explosive materials having different detonation sensitivities.

Abstract translation: 成形电荷穿孔单元包括其中形成有空腔的壳体。 高爆炸物质的爆炸物通过非爆炸物质的衬里保留在腔体内。 炸药包含两种具有不同爆震灵敏度的爆炸物质。

公开(公告)号：US4638712A

公开(公告)日：1987-01-27

申请号：US690701

申请日：1985-01-11

Applicant: Manmohan S. Chawla ,  Junius L. Speights

Inventor： Manmohan S. Chawla ,  Junius L. Speights

IPC: E21B43/116

CPC classification number: E21B43/116

Abstract: A bullet perforating apparatus for perforating subsurface formations traversed by a borehole. The bullet perforating apparatus comprises a gun body with a plurality of bullet perforating gun assemblies. The individual gun assemblies further comprise a gun barrel, a cartridge tube with propellant, means for igniting propellant, a projectile, and a seal at the well bore end of the barrel. The barrel further comprises an outer member and a replaceable wear member securely retained within the outer member.

Abstract translation: 用于穿孔钻孔的子弹穿孔装置。 子弹穿孔装置包括具有多个子弹穿孔枪组件的枪体。 单独的枪组件还包括枪筒，具有推进剂的筒管，用于点燃推进剂的装置，射弹和在筒的井眼端部处的密封件。 筒还包括外部构件和可固定地保持在外部构件内的可更换的磨损构件。

公开(公告)号：US08357902B2

公开(公告)日：2013-01-22

申请号：US13236990

申请日：2011-09-20

Applicant: Manmohan S. Chawla

Inventor： Manmohan S. Chawla

IPC: G01J5/10 ,  G01J3/28

CPC classification number: G01J1/08 ,  G01J3/10 ,  G01J3/2823 ,  G01J3/42 ,  G01N21/3563 ,  G01N21/3581 ,  G01S13/887

Abstract: An apparatus designed for generating and detecting reflected Terahertz waves using a single pixel Complementary Metal Oxide Semiconductor (CMOS) or Charge Couple Device (CCD) camera is described. Optical alignment between the components is not necessary since the Terahertz waves can propagate from the source to a collimating lens using a metal wire that can be bent obviating the need to have a clear line of sight from the lens to the source or to the camera. The present invention is well-suited for high traffic physical locations currently under surveillance such as security check points and also venues demanding significantly less obtrusive surveillance such as revolving entry doors, moving walkways, and entry gates for airplanes.

Abstract translation: 描述了使用单个像素互补金属氧化物半导体（CMOS）或电荷耦合器件（CCD）相机来产生和检测反射的太赫兹波的装置。 组件之间的光学对准不是必需的，因为太赫兹波可以使用可以弯曲的金属线从源传播到准直透镜，从而避免需要从透镜到源或相机具有清晰的视线。 本发明非常适合目前正在监控的高交通物理位置，例如安全检查点，以及要求显着较少的突击监视的场所，例如旋转进入门，移动人行道和飞机入口。

公开(公告)号：US4862804A

公开(公告)日：1989-09-05

申请号：US736741

申请日：1985-05-22

Applicant: Manmohan S. Chawla ,  Nicholas Collier ,  Steven D. Sehnert

Inventor： Manmohan S. Chawla ,  Nicholas Collier ,  Steven D. Sehnert

IPC: F42B1/02 ,  F42B3/113

CPC classification number: F42B3/113 ,  F42B1/02

Abstract: An implosion shaped charge device for jet perforating. In its overall concept, the implosion shaped charge perforator comprises a liner of implosive geometry, a primary explosive contiguous to the liner for providing implosion impulse to such and means for detonating the primary explosive. In a first embodiment the detonating means is an explosively actuated impact detonator. In a second embodiment the detonating means is a laser initiated explosive detonator. Both embodiments may be utilized in a perforating gun for perforating subsurface earth formations. In the operation of the embodiments the primary explosive is detonated with the resulting detonation wave approximately constantly accelerating the liner to radially converge to a small volume, from which a jet is propagated in the direction of the maximum pressure gradient.

Abstract translation: 一种用于喷射穿孔的内爆式充电装置。 在其整体概念中，内爆形状的充气穿孔器包括内爆的几何形状的衬套，与衬套相邻的主要爆炸物，用于向其提供内爆脉冲以及用于引爆主炸药的装置。 在第一实施例中，引爆装置是爆炸致动的冲击雷管。 在第二实施例中，引爆装置是激光起动的爆炸雷管。 两个实施例可以用于穿孔地下地层的射孔枪。 在实施例的操作中，初级爆炸物被引爆，所得到的爆炸波大体上不断地加速衬套以径向会聚到一小体积，喷射沿着最小压力梯度的方向传播。

公开(公告)号：US4627353A

公开(公告)日：1986-12-09

申请号：US791634

申请日：1985-10-25

Applicant: Manmohan S. Chawla

Inventor： Manmohan S. Chawla

IPC: F42B1/02

CPC classification number: F42B1/02

Abstract: A shaped charge perforating unit includes a housing having a cavity formed therein. An explosive charge of high explosive material is retained within the cavity by a liner of non-explosive material. The explosive charge consists of quantities of two explosive materials having different detonation rates.

Abstract translation: 成形电荷穿孔单元包括其中形成有空腔的壳体。 高爆炸物质的爆炸物通过非爆炸物质的衬里保留在腔体内。 炸药包含两种具有不同爆震率的爆炸物质。

公开(公告)号：US20120175521A1

公开(公告)日：2012-07-12

申请号：US13236990

申请日：2011-09-20

Applicant: Manmohan S. Chawla

Inventor： Manmohan S. Chawla

IPC: G01J5/10 ,  G01J3/28

CPC classification number: G01J1/08 ,  G01J3/10 ,  G01J3/2823 ,  G01J3/42 ,  G01N21/3563 ,  G01N21/3581 ,  G01S13/887

Abstract: An apparatus designed for generating and detecting reflected Terahertz waves using a single pixel Complementary Metal Oxide Semiconductor (CMOS) or Charge Couple Device (CCD) camera is described. Optical alignment between the components is not necessary since the Terahertz waves can propagate from the source to a collimating lens using a metal wire that can be bent obviating the need to have a clear line of sight from the lens to the source or to the camera. The present invention is well-suited for high traffic physical locations currently under surveillance such as security check points and also venues demanding significantly less obtrusive surveillance such as revolving entry doors, moving walkways, and entry gates for airplanes.

Abstract translation: 描述了使用单个像素互补金属氧化物半导体（CMOS）或电荷耦合器件（CCD）相机来产生和检测反射的太赫兹波的装置。 组件之间的光学对准不是必需的，因为太赫兹波可以使用可以弯曲的金属线从源传播到准直透镜，从而避免需要从透镜到源或相机具有清晰的视线。 本发明非常适合目前正在监控的高交通物理位置，例如安全检查点，以及要求显着较少的突击监视的场所，例如旋转进入门，移动人行道和飞机入口。