公开(公告)号：US08186437B2

公开(公告)日：2012-05-29

申请号：US12627273

申请日：2009-11-30

申请人： Zheng Rong Xu ,  Jorge A. Lozada Pazzi ,  Kevin Odom

发明人： Zheng Rong Xu ,  Jorge A. Lozada Pazzi ,  Kevin Odom

IPC分类号： E21B43/16

CPC分类号： E21B19/22 ,  E21B33/12 ,  E21B34/00 ,  E21B34/06

摘要： An assembly for delivery of treatment fluid at a target location downhole. The assembly is configured to avoid any substantial loss of treatment fluid in advance of reaching the target location in spite of low well pressure or a potentially excessive depth of the location. The assembly also allows for loading with treatment fluid from a downhole end thereof so as to avoid driving treatment fluid through the entirety of a tubular accommodating the assembly. The assembly may employ a spot valve to enhance filling with treatment fluid along with a backpressure valve coupled to the spot valve on-site so as to avoid premature loss of treatment fluid during a delivery application.

摘要翻译： 用于在井下的目标位置输送处理流体的组件。 组件被配置为尽管井压低或位置的潜在过度深度而在达到目标位置之前避免处理流体的任何实质性损失。 组件还允许从其井下端加载处理流体，以避免驱动处理流体穿过容纳组件的整个管状体。 组件可以采用点阀来增强与处理流体的填充以及现场连接到点阀的背压阀，以避免在输送应用期间处理流体的过早损失。

公开(公告)号：US20100186967A1

公开(公告)日：2010-07-29

申请号：US12627273

申请日：2009-11-30

申请人： Zheng Rong Xu ,  Jorge A. Lozada Pazzi ,  Kevin Odom

发明人： Zheng Rong Xu ,  Jorge A. Lozada Pazzi ,  Kevin Odom

IPC分类号： E21B34/06 ,  E21B34/00 ,  E21B33/12 ,  E21B19/22

CPC分类号： E21B19/22 ,  E21B33/12 ,  E21B34/00 ,  E21B34/06

摘要： An assembly for delivery of treatment fluid at a target location downhole. The assembly is configured to avoid any substantial loss of treatment fluid in advance of reaching the target location in spite of low well pressure or a potentially excessive depth of the location. The assembly also allows for loading with treatment fluid from a downhole end thereof so as to avoid driving treatment fluid through the entirety of a tubular accommodating the assembly. The assembly may employ a spot valve to enhance filling with treatment fluid along with a backpressure valve coupled to the spot valve on-site so as to avoid premature loss of treatment fluid during a delivery application.

摘要翻译： 用于在井下的目标位置输送处理流体的组件。 组件被配置为尽管井压低或位置的潜在过度深度而在达到目标位置之前避免处理流体的任何实质性损失。 组件还允许从其井下端加载处理流体，以避免驱动处理流体穿过容纳组件的整个管状体。 组件可以采用点阀来增强与处理流体的填充以及现场连接到点阀的背压阀，以避免在输送应用期间处理流体的过早损失。

公开(公告)号：US20100186949A1

公开(公告)日：2010-07-29

申请号：US12487376

申请日：2009-06-18

申请人： Zheng Rong Xu ,  Jorge A. Lozada Pazzi ,  Kevin Odom

发明人： Zheng Rong Xu ,  Jorge A. Lozada Pazzi ,  Kevin Odom

IPC分类号： E21B33/13 ,  E21B41/00 ,  E21B47/00 ,  E21B33/134

CPC分类号： E21B27/02 ,  E21B33/13

摘要： An assembly for delivery of treatment fluid at a target location downhole. The assembly is configured to avoid any substantial loss of treatment fluid in advance of reaching the target location in spite of low well pressure or a potentially excessive depth of the location. The assembly also allows for loading with treatment fluid from a downhole end thereof so as to avoid driving treatment fluid through the entirety of a tubular accommodating the assembly. The assembly may employ a spot valve to enhance filling with treatment fluid along with a backpressure valve coupled to the spot valve on-site so as to avoid premature loss of treatment fluid during a delivery application.