Rapid release emergency disconnect system incorporating an integrated hydraulic skid

Patent metadata

Field	Value
Publication number	US-9482378-B2
Application number	US-201414496336-A
Country	US
Kind code	B2
Filing date	Sep 25, 2014
Priority date	Sep 27, 2013
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

In various embodiments, fluid conduits such as high pressure hoses deployed in-between two sea-fairing vessels may be released during an emergency by using a rapid release emergency disconnect system as described herein, where the rapid release emergency disconnect system may engage with a hanger such as an industry standard frac hanger and be used in-line with fluid conduits such as high-pressure lines. Various skid embodiments are described which can be configured to interface with one or more of the described rapid release emergency disconnect systems.

First claim

We claim:

1. A skid, comprising:
a. a directional control valve, the motor quick release comprising a fluid input;
b. a first valve in fluid communication with the fluid input;
c. a hydraulic motor in fluid communication with the fluid valve, the motor further comprising a fluid feedback;
d. a fluid reservoir in fluid communication with the hydraulic motor;
e. a quick connect disposed intermediate and in fluid communication with the hydraulic motor and the fluid reservoir;
f. a hydraulic power unit (HPU) in fluid communication with the fluid reservoir, the HPU comprising an adjustable pressure relief valve;
g. an intensifier in fluid communication with the HPU;
h. a second valve in fluid communication with the three stage intensifier, the second valve comprising a lock-out;
i. a pressure regulator valve in fluid communication with the second valve;
j. an electrically actuated valve in fluid communication with the pressure regulator valve and the hydraulic motor;
k. a third valve in fluid communication with the second valve, the third valve comprising a lock-out;
l. a hydraulic accumulator in fluid communication with the third valve; and
m. a second fluid tank in fluid communication with the hydraulic accumulator, the second fluid tank further comprising:
i. a dry gauge in fluid communication with the hydraulic accumulator;
ii. a fluid tank;
iii. a fourth valve disposed intermediate and in fluid communication with the hydraulic accumulator and the fluid tank, the fourth valve comprising a lock-out and configured as a fluid isolation valve with respect to the fluid tank;
iv. a pressure relief valve;
v. a fifth valve disposed intermediate and in fluid communication with the fluid tank and the pressure relief valve, the fifth valve comprising a lock-out and configured as a fluid isolation valve with respect to the fluid tank; and
vi. a pressure vent in fluid communication with the pressure relief valve.

2. The skid of claim 1 , further comprising a motor quick release disposed intermediate and in fluid communication with the first valve and the electrically actuated valve, the motor quick release in further fluid communication with the hydraulic motor.

3. The skid of claim 1 , wherein the first valve comprises a ball valve.

4. The skid of claim 1 , wherein the second valve comprises a ball valve.

5. The skid of claim 1 , wherein the third valve comprises a ball valve.

6. The skid of claim 1 , wherein the fourth valve comprises a ball valve.

7. The skid of claim 1 , wherein the fifth valve comprises a ball valve.

8. The skid of claim 1 , wherein the pressure vent is configured to vent fluid into the surrounding atmosphere.

9. The skid of claim 1 , wherein the fluid tank is configured as a tank for containing nitrogen at a pressure of around 3000 psi.

10. The skid of claim 1 , wherein the hydraulic accumulator comprises a plurality of hydraulic accumulators.

11. The skid of claim 1 , wherein each of the hydraulic accumulators is configured to accumulate around 15 gallons of fluid.

12. The skid of claim 1 , wherein the pressure regulator valve is configured to regulate pressures of from around 3000 to 5000 psi.

13. The skid of claim 1 , wherein the electrically actuated valve comprises a non-proportioning valve.

14. The skid of claim 1 , wherein the HPU comprises an adjustable pressure relief valve.

15. The skid of claim 1 , wherein the intensifier comprises a multistage intensifier in fluid communication with the HPU.

16. The skid of claim 15 , wherein the multistage intensifier comprises a three stage intensifier.

17. The skid of claim 1 , wherein directional control valve comprises:
a. a first fluid input in fluid communication with the first valve; and
b. a second fluid input in fluid communication with the fluid reservoir.

18. The skid of claim 17 , wherein the second fluid input is also in fluid communication with the hydraulic motor.

19. The skid of claim 17 , further comprising a sixth valve disposed intermediate and in fluid communication with the second fluid input and the hydraulic motor.

20. The skid of claim 19 , wherein the sixth valve comprises a ball valve.

Assignees

• Oceaneering Int Inc

Inventors

• Spexarth Gary R
• Myers Richard Allan
• Gebhardt Kyle William
• Voss Alexander Robert
• Carter Jordan Ashley

Classifications

• F16L37/30

  with fluid cut-off means in each of two pipe-end fittings · CPC title

• F15B2211/214

  the pressure sources being hydrotransformers · CPC title

• F15B2211/212

  the pressure sources being accumulators · CPC title

• F15B11/032

  by means of fluid-pressure converters · CPC title

• F15B1/024

  used as a supplementary power source, e.g. to store energy in idle periods to balance pump load · CPC title