Hydraulic control assembly for actuating a hydraulically controllable downhole device and method for use of same
First Claim
1. A hydraulic control assembly for actuating a hydraulically controllable downhole device comprising:
- a hydraulic fluid source located on a surface installation that supplies a low pressure hydraulic fluid;
an umbilical assembly coupled to the hydraulic fluid source that provides a supply fluid passageway for the low pressure hydraulic fluid; and
a subsea intensifier operably associated with a subsea wellhead and the umbilical assembly, the subsea intensifier operable to convert the low pressure hydraulic fluid into a high pressure hydraulic fluid that actuates the hydraulically controllable downhole device.
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Accused Products
Abstract
A hydraulic control assembly (80) for actuating a hydraulically controllable downhole device (100) comprises a hydraulic fluid source (82) located on a surface installation that supplies a low pressure hydraulic fluid, an umbilical assembly (88) coupled to the hydraulic fluid source (82) that provides a supply fluid passageway for the low pressure hydraulic fluid and a subsea intensifier (90) operably associated with a subsea wellhead. The subsea intensifier (90) is operable to convert the low pressure hydraulic fluid from the hydraulic fluid source (82) into a high pressure hydraulic fluid for actuating the hydraulically controllable downhole device (100).
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Citations
34 Claims
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1. A hydraulic control assembly for actuating a hydraulically controllable downhole device comprising:
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a hydraulic fluid source located on a surface installation that supplies a low pressure hydraulic fluid;
an umbilical assembly coupled to the hydraulic fluid source that provides a supply fluid passageway for the low pressure hydraulic fluid; and
a subsea intensifier operably associated with a subsea wellhead and the umbilical assembly, the subsea intensifier operable to convert the low pressure hydraulic fluid into a high pressure hydraulic fluid that actuates the hydraulically controllable downhole device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A hydraulic control assembly for actuating a hydraulically controllable downhole device comprising:
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a hydraulic fluid source located on a surface installation that supplies a low pressure hydraulic supply fluid and a hydraulic power fluid;
an umbilical assembly coupled to the hydraulic fluid source that provides a supply fluid passageway for the low pressure hydraulic fluid and a power fluid passageway; and
a subsea intensifier operably associated with a subsea wellhead and the umbilical assembly, the subsea intensifier having a hydraulic motor that is powered by the hydraulic power fluid and a hydraulic pump that is driven by the hydraulic motor, the hydraulic pump converts the low pressure hydraulic supply fluid into a high pressure hydraulic supply fluid to actuate the hydraulically controllable downhole device.
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14. A hydraulic control assembly for actuating a hydraulically controllable downhole device comprising:
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a subsea hydraulic fluid source that supplies a low pressure hydraulic fluid; and
a subsea intensifier operably associated with a subsea wellhead and in fluid communication with the hydraulic fluid source, the subsea intensifier operable to convert the low pressure hydraulic fluid from the hydraulic fluid source into a high pressure hydraulic fluid that actuates the hydraulically controllable downhole device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A hydraulic control assembly for actuating a hydraulically controllable downhole device comprising:
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a hydraulic fluid source operably associated with a subsea wellhead that supplies a low pressure hydraulic supply fluid; and
a subsea intensifier operably associated with the hydraulic fluid source the subsea intensifier having a hydraulic pump that is driven by an electric motor operable to receive electrical power conveyed on an electrical power conduit of an umbilical assembly that couples the subsea intensifier to a surface installation, the hydraulic pump converts the low pressure hydraulic supply fluid from the hydraulic fluid source into a high pressure hydraulic supply fluid to actuate the hydraulically controllable downhole device.
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22. A method of actuating a hydraulically controllable downhole device comprising the steps of:
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storing a hydraulic fluid in a reservoir located on a surface installation;
pumping the hydraulic fluid at a first pressure from the reservoir through a supply fluid passageway of an umbilical assembly to a subsea intensifier operably associated with a subsea wellhead;
intensifying the pressure of the hydraulic fluid from the first pressure to a second pressure; and
actuating the hydraulically controllable downhole device with the hydraulic fluid at the second pressure. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A method of actuating a hydraulically controllable downhole device comprising the steps of:
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storing a hydraulic fluid in a subsea hydraulic fluid reservoir at a first pressure;
intensifying the pressure of the hydraulic fluid with a subsea intensifier that is operably associated with a subsea wellhead; and
actuating the hydraulically controllable downhole device in response to the hydraulic fluid. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification