公开(公告)号：US08360751B2

公开(公告)日：2013-01-29

申请号：US11852052

申请日：2007-09-07

Applicant: Grant Duncan

Inventor： Grant Duncan

IPC: F04B35/02 ,  F04B53/12 ,  E21B33/00 ,  E21B27/00 ,  F01B31/00

CPC classification number: F04B49/22 ,  E21B43/129 ,  F04B5/00 ,  F04B47/04 ,  F04B47/08

Abstract: A pump has a pump barrel formed from a larger diameter section and a smaller diameter section. Each section has a biased piston moveable within the section and the pistons are connected together to form a variable volume chamber between the pistons. As the connected pistons move toward the larger diameter section, a volume of fluid is moved through an inlet valve into the variable volume chamber of increasing volume. When the pistons are moved toward the smaller diameter section, a differential volume of fluid is discharged from the variable volume chamber of decreasing volume through a discharge valve into a discharge conduit. The pistons are actuated to move within the pump barrel by application and release of pressure at a remote end of the discharge conduit.

Abstract translation: 泵具有由较大直径部分和较小直径部分形成的泵筒。 每个部分具有在该部分内可移动的偏置活塞，并且活塞连接在一起以在活塞之间形成可变容积室。 随着连接的活塞朝向较大直径部分移动，一定体积的流体通过入口阀移动到增加体积的可变容积室中。 当活塞向较小直径部分移动时，不同体积的流体通过排放阀从减小体积的可变容积室排出到排放管道中。 通过在排出管道的远端施加和释放压力来致动活塞以在泵筒内移动。

公开(公告)号：US4111262A

公开(公告)日：1978-09-05

申请号：US829603

申请日：1977-09-01

Applicant: Grant Duncan

Inventor： Grant Duncan

IPC: E21B27/00 ,  E21B31/08

CPC classification number: E21B27/00

Abstract: A tubular, flexible rubber-like junk boot is positioned on the lower end of a drill string, blade-type stabilizer to catch small but dense particles of debris which are not removed from the hole by the drilling fluid. The boot has means on its lower end for clamping the boot in place.

公开(公告)号：US08011901B2

公开(公告)日：2011-09-06

申请号：US11530848

申请日：2006-09-11

Applicant: Grant Duncan

Inventor： Grant Duncan

IPC: F04B9/08

CPC classification number: F04B5/00 ,  F04B9/10

Abstract: A pump has a pump barrel formed from a larger diameter section and a smaller diameter section. Each section has a biased piston moveable within the section and the pistons are connected together to form a variable volume chamber between the pistons. As the connected pistons move toward the larger diameter section, a volume of fluid is moved through an inlet valve into the variable volume chamber of increasing volume. When the pistons are moved toward the smaller diameter section, a differential volume of fluid is discharged from the variable volume chamber of decreasing volume through a discharge valve into a discharge conduit. The pistons are actuated to move within the pump barrel by application and release of pressure at a remote end of the discharge conduit.

Abstract translation: 泵具有由较大直径部分和较小直径部分形成的泵筒。 每个部分具有在该部分内可移动的偏置活塞，并且活塞连接在一起以在活塞之间形成可变容积室。 随着连接的活塞朝向较大直径部分移动，一定体积的流体通过入口阀移动到增加体积的可变容积室中。 当活塞向较小直径部分移动时，不同体积的流体通过排放阀从减小体积的可变容积室排出到排放管道中。 通过在排出管道的远端施加和释放压力来致动活塞以在泵筒内移动。

公开(公告)号：US20080080990A1

公开(公告)日：2008-04-03

申请号：US11530848

申请日：2006-09-11

Applicant: Grant Duncan

Inventor： Grant Duncan

IPC: F04B35/02

CPC classification number: F04B5/00 ,  F04B9/10

Abstract: A pump has a pump barrel formed from a larger diameter section and a smaller diameter section. Each section has a biased piston moveable within the section and the pistons are connected together to form a variable volume chamber between the pistons. As the connected pistons move toward the larger diameter section, a volume of fluid is moved through an inlet valve into the variable volume chamber of increasing volume. When the pistons are moved toward the smaller diameter section, a differential volume of fluid is discharged from the variable volume chamber of decreasing volume through a discharge valve into a discharge conduit. The pistons are actuated to move within the pump barrel by application and release of pressure at a remote end of the discharge conduit.

Abstract translation: 泵具有由较大直径部分和较小直径部分形成的泵筒。 每个部分具有在该部分内可移动的偏置活塞，并且活塞连接在一起以在活塞之间形成可变容积室。 随着连接的活塞朝向较大直径部分移动，一定体积的流体通过入口阀移动到增加体积的可变容积室中。 当活塞向较小直径部分移动时，不同体积的流体通过排放阀从减小体积的可变容积室排出到排放管道中。 通过在排出管道的远端施加和释放压力来致动活塞以在泵筒内移动。

公开(公告)号：US20080063544A1

公开(公告)日：2008-03-13

申请号：US11852052

申请日：2007-09-07

Applicant: Grant Duncan

Inventor： Grant Duncan

IPC: F04F7/00

CPC classification number: F04B49/22 ,  E21B43/129 ,  F04B5/00 ,  F04B47/04 ,  F04B47/08

Abstract: A pump has a pump barrel formed from a larger diameter section and a smaller diameter section. Each section has a biased piston moveable within the section and the pistons are connected together to form a variable volume chamber between the pistons. As the connected pistons move toward the larger diameter section, a volume of fluid is moved through an inlet valve into the variable volume chamber of increasing volume. When the pistons are moved toward the smaller diameter section, a differential volume of fluid is discharged from the variable volume chamber of decreasing volume through a discharge valve into a discharge conduit. The pistons are actuated to move within the pump barrel by application and release of pressure at a remote end of the discharge conduit.

Abstract translation: 泵具有由较大直径部分和较小直径部分形成的泵筒。 每个部分具有在该部分内可移动的偏置活塞，并且活塞连接在一起以在活塞之间形成可变容积室。 随着连接的活塞朝向较大直径部分移动，一定体积的流体通过入口阀移动到增加体积的可变容积室中。 当活塞向较小直径部分移动时，不同体积的流体通过排放阀从减小体积的可变容积室排出到排放管道中。 通过在排出管道的远端施加和释放压力来致动活塞以在泵筒内移动。