Two line operation of two hydraulically controlled downhole devices

Patent metadata

Field	Value
Publication number	US-9051830-B2
Application number	US-201414313509-A
Country	US
Kind code	B2
Filing date	Jun 24, 2014
Priority date	Aug 22, 2013
Publication date	Jun 9, 2015
Grant date	Jun 9, 2015

Abstract

A downhole hydraulic control system includes a hydraulic control module positioned in a well. First and second hydraulically controlled devices are positioned in the well. The first hydraulically controlled device has a first actuator and the second hydraulically controlled device has a second actuator. First and second hydraulic control lines extend uphole of the hydraulic control module in the well. In a first configuration of the hydraulic control module, pressure variations in the first and second hydraulic control lines are operable to independently shift the first and second actuators in respective first directions. In a second configuration of the hydraulic control module, pressure variations in the first and second hydraulic control lines are operable to shift the first and second actuators in respective second directions.

First claim

What is claimed is:

1. A downhole hydraulic control system comprising:
a hydraulic control module positioned in a well;
first and second hydraulically controlled devices positioned in the well, the first hydraulically controlled device having a first actuator, the second hydraulically controlled device having a second actuator; and
first and second hydraulic control lines extending uphole of the hydraulic control module in the well;
wherein, in a first configuration of the hydraulic control module, pressure variations in the first and second hydraulic control lines are operable to independently shift the first and second actuators in respective first directions;
wherein, in a second configuration of the hydraulic control module, pressure variations in the first and second hydraulic control lines are operable to shift the first and second actuators in respective second directions; and
wherein the hydraulic control module further comprises a release assembly and a piston, wherein a high pressure signal in the second hydraulic control line is operable to unlock the release assembly and wherein a high pressure signal in the first hydraulic control line is operable shift the piston from a first position to a second position.

2. A downhole hydraulic control system comprising:
a hydraulic control module positioned in a well;
first and second hydraulically controlled devices positioned in the well, the first hydraulically controlled device having a first actuator, the second hydraulically controlled device having a second actuator; and
first and second hydraulic control lines extending uphole of the hydraulic control module in the well;
wherein, in a first configuration of the hydraulic control module, pressure variations in the first and second hydraulic control lines are operable to independently shift the first and second actuators in respective first directions;
wherein, in a second configuration of the hydraulic control module, pressure variations in the first and second hydraulic control lines are operable to shift the first and second actuators in respective second directions;
wherein, the first actuator is operated in the first direction of the first actuator responsive to a high pressure signal in the first hydraulic control line ported through the hydraulic control module to a first side of the first actuator and a low pressure signal in the second hydraulic control line ported to a second side of the first actuator;
wherein, the second actuator is operated in the first direction of the second actuator responsive to a high pressure signal in the second hydraulic control line ported to a first side of the second actuator and a low pressure signal in the first hydraulic control line ported through the hydraulic control module to a second side of the second actuator; and
wherein, the first and second actuators are operated in respective second directions responsive to a high pressure signal in the first hydraulic control line ported through the hydraulic control module to the second sides of the first and second actuators, a low pressure signal in the second hydraulic control line ported through the hydraulic control module to the first side the first actuator and the low pressure signal in the second hydraulic control line ported to the first side the second actuator.

3. A downhole hydraulic control method comprising:
positioning a downhole hydraulic control system in a well, the system including a hydraulic control module, first and second hydraulically controlled devices, the first hydraulically controlled device having a first actuator, the second hydraulically controlled device having a second actuator and first and second hydraulic control lines extending uphole of the hydraulic control module;
independently shifting the first and second actuators in respective first directions responsive to pressure variations in the first and second hydraulic control lines when the hydraulic control module is in a first configuration; and
shifting the first and second actuators in respective second directions responsive to pressure variations in the first and second hydraulic control lines when the hydraulic control module is in a second configuration;
wherein operating the hydraulic control module from the first configuration to the second configuration further comprises unlocking a release assembly of the hydraulic control module responsive to a high pressure signal in the second hydraulic control line and shifting a piston of the hydraulic control module from a first position to a second position responsive to a high pressure signal in the first hydraulic control line.

4. A downhole hydraulic control method comprising:
positioning a downhole hydraulic control system in a well, the system including a hydraulic control module, first and second hydraulically controlled devices, the first hydraulically controlled device having a first actuator, the second hydraulically controlled device having a second actuator and first and second hydraulic control lines extending uphole of the hydraulic control module;
independently shifting the first and second actuators in respective first directions responsive to pressure variations in the first and second hydraulic control lines when the hydraulic control module is in a first configuration;
shifting the first and second actuators in respective second directions responsive to pressure variations in the first and second hydraulic control lines when the hydraulic control module is in a second configuration;
shifting the first actuator in the first direction of the first actuator responsive to a high pressure signal in the first hydraulic control line ported through the hydraulic control module to a first side of the first actuator and a low pressure signal in the second hydraulic control line ported to a second side of the first actuator;
shifting the second actuator in the first direction of the second actuator responsive to a high pressure signal in the second hydraulic control line ported to a first side of the second actuator and a low pressure signal in the first hydraulic control line ported through the hydraulic control module to a second side of the second actuator; and
shifting the first and second actuators in respective second directions responsive to a high pressure signal in the first hydraulic control line ported through the hydraulic control module to the second sides of the first and second actuators, a low pressure signal in the second hydraulic control line ported through the hydraulic control module to the first side the first actuator and the low pressure signal in the second hydraulic control line ported to the first side the second actuator.

5. A hydraulic control module for use in a downhole hydraulic control system having first and second hydraulic control lines for operating first and second hydraulically controlled devices having first and second actuators, respectively, the hydraulic control module comprising:
a housing having a plurality of first ports in fluid communication with the first hydraulic control line, a plurality of second ports in fluid communication with the second hydraulic control line, a third port and a fourth port;
a release assembly disposed within the housing; and
a piston slidably disposed within the housing, the piston having a first position relative to the housing in which at least one of the first ports is in fluid communication with the third port, the piston having a second position relative to the housing in which at least one of the first ports is in fluid communication with the fourth port and at least one of the second ports is in fluid communication with the third port, the piston selectively retained in the first position by the release assembly;
wherein, the release assembly is unlocked responsive to a high pre

Assignees

• Halliburton Energy Services Inc

Inventors

• Tips Timothy R

Classifications

• E21B23/042

  using a single piston or multiple mechanically interconnected pistons · CPC title

• E21B43/25 Primary

  Methods for stimulating production {(by vibrating earth formations E21B43/003)} · CPC title

• E21B34/10 Primary

  operated by control fluid supplied from outside the borehole · CPC title

• E21B43/00

  Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (applicable only to water E03B) · CPC title