Subsea ROV-Mounted Hot Water Injection Skid

Patent metadata

Field	Value
Publication number	US-2016258653-A1
Application number	US-201615061698-A
Country	US
Kind code	A1
Filing date	Mar 4, 2016
Priority date	Mar 6, 2015
Publication date	Sep 8, 2016
Grant date	—

Abstract

A remotely operated vehicle mountable hot water injection skid comprises skid frame, one or more floats, a power interface, one or more subsea power transformers, one or more electrical power interfaces, one or more data communication interfaces, one or more heater skid telemetry systems, a predetermined set of integration equipment, a water collection and heating container, a pumping and circulation system, and a hot seawater circulation flying lead or spray wand which allows delivery of heated fluid directly to a subsea asset using heated seawater delivered through a common hydraulic hot stab or directly to via a pressurized spraying wand.

First claim

1 . A remotely operated vehicle mountable hot water injection skid ( 1 ), comprising:
a. a skid frame ( 10 ); b. a float ( 18 ) disposed at least partially within the skid frame; c. a subsea power transformer ( 30 ) disposed at least partially within the skid frame; d. a power interface ( 11 ) disposed at least partially within the skid frame ( 1 ) and operatively in communication with the subsea power transformer ( 30 ); e. an electrical power interface ( 60 ) disposed at least partially within the skid frame, the electrical power interface operatively in communication with the subsea power transformer; f. a data communication interface ( 12 ) disposed at least partially within the skid frame; g. a heater skid telemetry system ( 20 ) disposed at least partially within the skid frame, the heater skid telemetry system operatively in communication with the subsea power transformer and the data communication interface; h. a predetermined set of integration equipment ( 25 ) disposed at least partially within the skid frame, the predetermined set of integration equipment operatively in communication with the subsea power transformer and the heater skid telemetry system ( 20 ); i. a water collection and heating container ( 40 ) disposed at least partially within the skid frame, the water collection and heating container ( 40 ) comprising:
i. an interior water chamber ( 43 );
ii. a water inlet ( 41 ) in fluid communication with the interior water chamber;
iii. a water outlet ( 42 ) in fluid communication with the interior water chamber; and
iv. a heating element ( 70 ) in fluid communication with the interior water chamber;
j. a pumping and circulation system ( 50 ) disposed at least partially within the skid frame, the hydraulically-powered pumping and circulation system ( 50 ) in fluid communication with the water collection and heating container ( 40 ), the pumping and circulation system ( 50 ) operatively in communication with the subsea power transformer and the heater skid telemetry system ( 20 ).

2 . The remotely operated vehicle mountable hot water injection skid of claim 1 , wherein the data communication port is operatively connected to the predetermined set of integration equipment.

3 . The remotely operated vehicle mountable hot water injection skid of claim 1 , wherein the skid frame comprises aluminum.

4 . The remotely operated vehicle mountable hot water injection skid of claim 1 , wherein the predetermined set of integration equipment ( 25 ) comprises hydraulic and electrical WROV-to-Skid integration equipment.

5 . The remotely operated vehicle mountable hot water injection skid of claim 1 , wherein the subsea power transformer ( 30 ) comprises a high power subsea power transformer.

6 . The remotely operated vehicle mountable hot water injection skid of claim 1 , wherein the heating element ( 70 ) comprises a high power immersion-style heating element.

7 . The remotely operated vehicle mountable hot water injection skid of claim 1 , wherein the pumping and circulation system ( 50 ) comprises a hydraulically-powered pumping and circulation system ( 50 ).

8 . A subsea heating fluid system ( 2 ), comprising:
a. a remotely operated vehicle mountable hot water injection skid ( 1 ), comprising:
i. a skid frame ( 10 );
ii. a power interface ( 11 ) disposed at least partially within the skid frame;
iii. a power transformer ( 30 ) disposed at least partially within the skid frame, the power transformer operatively in communication with the power interface;
iv. a data communication interface ( 12 ) disposed at least partially within the skid frame;
v. a heater skid telemetry system ( 20 ) disposed at least partially within the skid frame, the heater skid telemetry system operatively in communication with the power transformer and the data communication interface;
vi. a heating system ( 40 ), comprising:
1. a water collection and heating void container ( 40 ), comprising an interior chamber ( 43 );
2. a heating element ( 70 ) disposed at least partially within the water collection and heating void container;
3. a fluid inlet ( 41 ) in fluid communication with the water collection and heating void container; and
4. a fluid outlet ( 42 ) in fluid communication with the water collection and heating void container;

vii. a sensor ( 22 ) disposed at least partially within the skid frame and operatively in communication with the heating system and the heater skid telemetry system;
viii. a pumping and circulation system ( 50 ) in fluid communication with the heating system fluid inlet ( 41 ), the pumping and circulation system comprising a pump inlet ( 51 ) and a pump outlet ( 52 );
ix. a first valve ( 13 ) in fluid communication with the pumping and circulation system ( 50 ) and the fluid delivery wand ( 80 ); and
x. a fluid delivery conduit ( 80 ) in fluid communication with the first valve; and
b. a topside control and monitoring system ( 90 ) operatively in communication with the predetermined set of integration equipment via the data communication port ( 12 ).

9 . The heating system of claim 8 , wherein the heating element ( 70 ) comprises a high power immersion-style heating element.

10 . The heating system of claim 8 , wherein the power transformer ( 30 ) comprises a high power subsea transformer.

11 . The heating system of claim 10 , wherein the high power subsea transformer comprises a 3000 VAC high power subsea transformer.

12 . The heating system of claim 8 , wherein the pumping and circulation system ( 50 ) further comprises a hydraulically-powered pumping and circulation system ( 50 ).

13 . The heating system of claim 8 , further comprising a predetermined set of integration equipment ( 25 ) disposed at least partially within the skid frame.

14 . The heating system of claim 8 , wherein the fluid delivery conduit ( 80 ) comprises at least one of a hot seawater circulation flying lead ( 82 ) or a spray wand ( 81 ).

15 . The heating system of claim 8 , wherein the first valve ( 13 ) comprises a three way valve, the three way valve comprising:
a. a first inlet ( 13 a ) in fluid communication with an outside environment; b. a first outlet ( 13 b ) in fluid communication with the heating system fluid outlet ( 42 ) and with the first inlet; and c. a second outlet ( 13 c ) in fluid communication with the fluid delivery system ( 80 ) and the first inlet.

16 . The heating system of claim 8 , further comprising a set of sensors ( 22 ) operatively in communication with the heater skid telemetry system ( 20 ), the set of sensors comprising:
a. a pump inlet fluid sensor ( 23 ) operatively in communication with the pump inlet ( 51 ); b. a pump outlet fluid sensor ( 24 ) operatively in communication with the pump outlet ( 52 ); c. an outlet flow sensor ( 25 ) operatively in communication with the heating system fluid outlet ( 42 ); d. an outlet data sensor ( 26 ) operatively in communication with the heating system fluid outlet ( 42 ); and e. a power sensor ( 27 ) operatively in communication with the power transformer ( 30 ).

17 . The heating system of claim 16 , wherein:
a. the pump inlet fluid sensor ( 23 ) comprises a pressure-flow sensor; b. a pump outlet fluid sensor ( 24 ) comprises a pressure-flow sensor; c. the outlet data sensor ( 26 ) comprises a pressure-flow-temperature sensor; and d. the power sensor ( 27 ) comprises a voltage and/or current sensor.

18 . A method of applying a heated fluid to a subsea asset via heated seawater equipment through a common interface style

Assignees

• Oceaneering Int Inc

Inventors

• Papasideris Kosta

Classifications

• B63J2/12 Primary

  Heating; Cooling · CPC title

• F24H1/0018

  using electric energy supply · CPC title

• F24H9/2014 Primary

  using electrical energy supply · CPC title

• B63G2008/002

  unmanned · CPC title

• B63G8/001

  Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations (self-propelled or direction controlled diving chambers with mechanical link to a base B63C11/42) · CPC title