公开(公告)号：US07309163B2

公开(公告)日：2007-12-18

申请号：US10543225

申请日：2004-01-22

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: F16C17/04 ,  F16C17/26

CPC classification number: F16C17/04 ,  F16C17/26

Abstract: A thrust bearing configuration for rotary applications includes a shaft (12) having an external surface (14) and a housing (16) having an internal surface (18). The housing and the shaft are adapted for relative rotational movement. Inner bearing support members (22) extend radially outwardly from the external surface of the shaft in axially spaced relation. Outer bearing support members (26) extend radially inwardly from the internal surface of the housing. A bearing pad (24, 28) is disposed between each one of the inner bearing support members and an adjacent one of the outer bearing support members. With the described configuration an axial force exerted upon the shaft is transmitted from the shaft through each of the inner bearing support members and bearing pads to the outer bearing support members and the housing. This thrust bearing acts like a bearing stack. It is possible to stack any number of these bearing pads to withstand anticipated axial loads.

Abstract translation: 用于旋转应用的止推轴承配置包括具有外表面（14）的轴（12）和具有内表面（18）的壳体（16）。 壳体和轴适于相对旋转运动。 内轴承支撑构件（22）以轴向间隔的关系从轴的外表面径向向外延伸。 外轴承支撑构件（26）从壳体的内表面径向向内延伸。 轴承座（24,28）设置在每个内轴承支撑构件和相邻的一个外轴承支撑构件之间。 利用所述构造，施加在轴上的轴向力从轴穿过每个内部轴承支撑构件和支承垫传递到外部轴承支撑构件和壳体。 该推力轴承的作用就像轴承座。 可以堆叠任何数量的这些轴承垫以承受预期的轴向载荷。

公开(公告)号：US07093665B2

公开(公告)日：2006-08-22

申请号：US10811772

申请日：2004-03-29

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: E21B43/00

CPC classification number: E21B43/121 ,  E21B43/129 ,  F04C13/008 ,  F04C2210/24

Abstract: A method of adapting a downhole multi-phase twin screw pump (10) for use in wells having a high gas content. A first step involves positioning a supplementary liquid channel (22,122) in a housing (12) of the pump in fluid communication with a pumping screw near an intake end (14) of the pump. A second step involves feeding supplementary liquid through the supplementary liquid channel to the pumping screw, thereby enhancing a liquid seal around the pumping screw.

Abstract translation: 一种适应井下多相双螺杆泵（10）的方法，用于具有高气体含量的井中。 第一步涉及将辅助液体通道（22,122）定位在泵的壳体（12）中，与泵的进气端（14）附近的泵送螺杆流体连通。 第二步涉及将辅助液体通过辅助液体通道供给到泵送螺杆，从而增强了泵送螺杆周围的液体密封。

公开(公告)号：US20110147005A1

公开(公告)日：2011-06-23

申请号：US13035869

申请日：2011-02-25

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: E21B43/00 ,  F04B19/00

CPC classification number: E21B43/126 ,  F04C2/1073 ,  F04C14/08 ,  F04C15/0061

Abstract: A method of running a down hole rotary pump using a top drive, sucker rod or any drive shaft from surface. A first step involves providing a gear box having an input end and an output end. The gear box is being capable of receiving an input of a first speed at the input end and producing an output of a second speed which is one of either faster or slower than of the first speed at the output end. A second step involves positioning the gear box down hole with the input end coupled to a remote lower end of a sucker rod and the output end coupled to a rotary activated pump. A third step involves applying a driving force to the sucker rod to rotate the sucker rod at the first speed, with the rotational force being transmitted to the rotary activated pump through the gear box which rotates the rotary activated pump at the second speed.

Abstract translation: 使用顶部驱动器，抽油杆或任何驱动轴从表面运行井下旋转泵的方法。 第一步涉及提供具有输入端和输出端的齿轮箱。 齿轮箱能够在输入端接收第一速度的输入并产生与输出端的第一速度相比更快或慢的速度的第二速度的输出。 第二步涉及将齿轮箱向下孔定位，其输入端连接到抽油杆的远端下端，并且输出端连接到旋转激活泵。 第三步涉及对抽油杆施加驱动力以使第一速度旋转抽油杆，旋转力通过齿轮箱传递至旋转启动泵，该齿轮箱以第二速度转动旋转活塞泵。

公开(公告)号：US20050002812A1

公开(公告)日：2005-01-06

申请号：US10811772

申请日：2004-03-29

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: E21B43/12 ,  F04C13/00 ,  F03C2/00

CPC classification number: E21B43/121 ,  E21B43/129 ,  F04C13/008 ,  F04C2210/24

Abstract: A method of adapting a downhole multi-phase twin screw pump (10) for use in wells having a high gas content. A first step involves positioning a supplementary liquid channel (22, 122) in a housing (12) of the pump in fluid communication with a pumping screw near an intake end (14) of the pump. A second step involves feeding supplementary liquid through the supplementary liquid channel to the pumping screw, thereby enhancing a liquid seal around the pumping screw.

Abstract translation: 一种适应井下多相双螺杆泵（10）的方法，用于具有高气体含量的井中。 第一步涉及将辅助液体通道（22,122）定位在泵的壳体（12）中，与泵的进气端（14）附近的泵送螺杆流体连通。 第二步涉及将辅助液体通过辅助液体通道供给到泵送螺杆，从而增强了泵送螺杆周围的液体密封。

公开(公告)号：US20060210403A1

公开(公告)日：2006-09-21

申请号：US11409488

申请日：2006-04-21

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: F04B49/06

CPC classification number: E21B43/126 ,  F04C2/1073 ,  F04C14/08 ,  F04C15/0061

Abstract: A method of running a down hole rotary pump using a top drive, sucker rod or any drive shaft from surface. A first step involves providing a gear box having an input end and an output end. The gear box is being capable of receiving an input of a first speed at the input end and producing an output of a second speed which is one of either faster or slower than of the first speed at the output end. A second step involves positioning the gear box down hole with the input end coupled to a remote lower end of a sucker rod and the output end coupled to a rotary activated pump. A third step involves applying a driving force to the sucker rod to rotate the sucker rod at the first speed, with the rotational force being transmitted to the rotary activated pump through the gear box which rotates the rotary activated pump at the second speed.

Abstract translation: 使用顶部驱动器，抽油杆或任何驱动轴从表面运行井下旋转泵的方法。 第一步涉及提供具有输入端和输出端的齿轮箱。 齿轮箱能够在输入端接收第一速度的输入并产生与输出端的第一速度相比更快或慢的速度的第二速度的输出。 第二步涉及将齿轮箱向下孔定位，其输入端连接到抽油杆的远端下端，并且输出端连接到旋转激活泵。 第三步涉及对抽油杆施加驱动力以使第一速度旋转抽油杆，旋转力通过齿轮箱传递至旋转启动泵，该齿轮箱以第二速度转动旋转活塞泵。

公开(公告)号：US20060104557A1

公开(公告)日：2006-05-18

申请号：US10543225

申请日：2004-01-22

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: F16C17/04

CPC classification number: F16C17/04 ,  F16C17/26

Abstract: A thrust bearing configuration for rotary applications includes a shaft (12) having an external surface (14) and a housing (16) having an internal surface (18). The housing and the shaft are adapted for relative rotational movement. Inner bearing support members (22) extend radially outwardly from the external surface of the shaft in axially spaced relation. Outer bearing support members (26) extend radially inwardly from the internal surface of the housing. A bearing pad (24, 28) is disposed between each one of the inner bearing support members and an adjacent one of the outer bearing support members. With the described configuration an axial force exerted upon the shaft is transmitted from the shaft through each of the inner bearing support members and bearing pads to the outer bearing support members and the housing. This thrust bearing acts like a bearing stack. It is possible to stack any number of these bearing pads to withstand anticipated axial loads.

Abstract translation: 用于旋转应用的止推轴承配置包括具有外表面（14）的轴（12）和具有内表面（18）的壳体（16）。 壳体和轴适于相对旋转运动。 内轴承支撑构件（22）以轴向间隔的关系从轴的外表面径向向外延伸。 外轴承支撑构件（26）从壳体的内表面径向向内延伸。 轴承座（24,28）设置在每个内轴承支撑构件和相邻的一个外轴承支撑构件之间。 利用所述构造，施加在轴上的轴向力从轴穿过每个内部轴承支撑构件和支承垫传递到外部轴承支撑构件和壳体。 该推力轴承的作用就像轴承座。 可以堆叠任何数量的这些轴承垫以承受预期的轴向载荷。

公开(公告)号：US20230340930A1

公开(公告)日：2023-10-26

申请号：US18025373

申请日：2021-09-08

Applicant: Pradeep DASS

Inventor： Pradeep DASS

IPC: F02K7/16 ,  F02C7/141 ,  F02C9/18

CPC classification number: F02K7/16 ,  F02C7/141 ,  F02C9/18 ,  F05D2260/213 ,  F05D2220/10 ,  F05D2300/133 ,  F05D2300/125

Abstract: A turboramjet has a housing with an intake and an exhaust. The housing houses a heat exchanger, a turbojet section and a ramjet section downstream of the turbojet section. The heat exchanger has an air path and a coolant path. The air path is configured to receive air from the air intake. The heat exchanger has a first section made from a first material and a second section made from a second material, the second material having a lower melting point and a lower density relative to the first material. A bypass air passage selectively bypasses the turbojet section to supply air to the ramjet section, and the coolant path uses fuel as a coolant and is configured to supply the fuel to the turbojet section.

公开(公告)号：US08714935B2

公开(公告)日：2014-05-06

申请号：US13035869

申请日：2011-02-25

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: E21B43/00 ,  F04B19/00

CPC classification number: E21B43/126 ,  F04C2/1073 ,  F04C14/08 ,  F04C15/0061

Abstract: A method of running a down hole rotary pump using a top drive, sucker rod or any drive shaft from surface. A first step involves providing a gear box having an input end and an output end. The gear box is being capable of receiving an input of a first speed at the input end and producing an output of a second speed which is one of either faster or slower than of the first speed at the output end. A second step involves positioning the gear box down hole with the input end coupled to a remote lower end of a sucker rod and the output end coupled to a rotary activated pump. A third step involves applying a driving force to the sucker rod to rotate the sucker rod at the first speed, with the rotational force being transmitted to the rotary activated pump through the gear box which rotates the rotary activated pump at the second speed.

Abstract translation: 使用顶部驱动器，抽油杆或任何驱动轴从表面运行井下旋转泵的方法。 第一步涉及提供具有输入端和输出端的齿轮箱。 齿轮箱能够在输入端接收第一速度的输入并产生与输出端的第一速度相比更快或慢的速度的第二速度的输出。 第二步涉及将齿轮箱向下孔定位，其输入端连接到抽油杆的远端下端，并且输出端连接到旋转激活泵。 第三步涉及对抽油杆施加驱动力以使第一速度旋转抽油杆，旋转力通过齿轮箱传递至旋转启动泵，该齿轮箱以第二速度转动旋转活塞泵。

公开(公告)号：US07896624B2

公开(公告)日：2011-03-01

申请号：US11409488

申请日：2006-04-21

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: F04B39/00

CPC classification number: E21B43/126 ,  F04C2/1073 ,  F04C14/08 ,  F04C15/0061

Abstract: A method of running a down hole rotary pump using a top drive, sucker rod or any drive shaft from surface. A first step involves providing a gear box having an input end and an output end. The gear box is being capable of receiving an input of a first speed at the input end and producing an output of a second speed which is one of either faster or slower than of the first speed at the output end. A second step involves positioning the gear box down hole with the input end coupled to a remote lower end of a sucker rod and the output end coupled to a rotary activated pump. A third step involves applying a driving force to the sucker rod to rotate the sucker rod at the first speed, with the rotational force being transmitted to the rotary activated pump through the gear box which rotates the rotary activated pump at the second speed.

Abstract translation: 使用顶部驱动器，抽油杆或任何驱动轴从表面运行井下旋转泵的方法。 第一步涉及提供具有输入端和输出端的齿轮箱。 齿轮箱能够在输入端接收第一速度的输入并产生与输出端的第一速度相比更快或慢的速度的第二速度的输出。 第二步涉及将齿轮箱向下孔定位，其输入端连接到抽油杆的远端下端，并且输出端连接到旋转激活泵。 第三步涉及对抽油杆施加驱动力以使第一速度旋转抽油杆，旋转力通过齿轮箱传递至旋转启动泵，该齿轮箱以第二速度转动旋转活塞泵。

公开(公告)号：US06413065B1

公开(公告)日：2002-07-02

申请号：US09280557

申请日：1999-03-30

Applicant: Pradeep Dass

Inventor： Pradeep Dass

IPC: F01C116

CPC classification number: F04C13/008 ,  F04C2/16

Abstract: A modular downhole pump includes a gear module for transferring power to the pump from a sucker rod or a downhole motor and a rotor module. The rotor module includes a pair of counter-rotating, interleaved rotors split into an upper pair and a lower pair which pump fluids in opposite directions within the rotor module. The rotor modules may be configured to increase the pressure capacity or the volume capacity of the pump and may be connected in series to achieve the desired volume and pressure output.

Abstract translation: 模块化井下泵包括用于从抽油杆或井下电动机和转子模块向泵输送动力的齿轮模块。 转子模块包括一对反向旋转的交错的转子，其分成上部对，并且在转子模块内沿相反方向泵送流体。 转子模块可以被配置为增加泵的压力容量或体积容量，并且可以串联连接以实现所需的体积和压力输出。