Paulo Lopez Silva

US Patent:

8235124, Aug 7, 2012

Filed:

Jul 2, 2009

Appl. No.:

12/497250

Inventors:

Glen H. Cuiper - Spring TX, US
Paulo Cezar Silva Paulo - Katy TX, US

Assignee:

Aker Subsea Inc. - Houston TX

International Classification:

E21B 7/21

US Classification:

166365, 166366, 166368

Abstract:

A variable buoyancy subsea running tool for use with subsea transportable devices, such as a tree cap. The buoyancy of the running tool may be varied through fluid or gas displacement in one or more containers. Alternatively, the running tool may be configured with a buoy that has static buoyancy, with the buoyancy of the running tool being varied through the addition of a counterweight. The running tool can be used to install or uninstall a tree cap on a subsea tree. Installation of a tree cap may be actuated by a remotely operated vehicle. Additionally, the running tool may be moved by a remotely operated vehicle and may have additional features such as a position locator device.

US Patent:

8256506, Sep 4, 2012

Filed:

Aug 19, 2009

Appl. No.:

12/543929

Inventors:

Andy Dyson - Stonehaven, GB
Charles Li - Spring TX, US
Oystein Mogedal - Oslo, NO
Paulo Cezar Silva Paulo - Katy TX, US
Nick Newlands - Oslo, NO

Assignee:

Aker Subsea Inc. - Houston TX

International Classification:

E21B 23/00
E21B 43/10

US Classification:

166 851, 166382

Abstract:

A tubing hanger for use in a wellhead. The wellhead includes a throughbore, a landing seat positioned in the throughbore, a landing groove positioned above the landing seat in the throughbore, and a locking groove in the throughbore. The tubing hanger comprises an expandable landing ring positioned on the tubing hanger for engaging the landing groove and a landing mechanism for expanding the landing ring radially outward from the tubing hanger. A locking ring for engaging the locking groove can be positioned on the tubing hanger. The tubing hanger can further include a locking mechanism for expanding the locking ring radially outward from the tubing hanger body and locking it into the locking groove.

US Patent:

8376057, Feb 19, 2013

Filed:

Aug 19, 2009

Appl. No.:

12/543912

Inventors:

Andy Dyson - Scotland, GB
Charles Li - Spring TX, US
Oystein Mogedal - Oslo, NO
Paulo Cezar Silva Paulo - Katy TX, US
Nick Newlands - Oslo, NO

Assignee:

Aker Subsea Inc. - Houston TX

International Classification:

E21B 23/00

US Classification:

166382, 166348, 166208, 166 7514, 277339, 277340

Abstract:

A wellhead assembly including a wellhead housing. The wellhead housing comprises a throughbore having a recessed sealing area and a tubing hanger positioned in the throughbore. A seal is positioned between the wellhead housing and the tubing hanger, the seal being positioned so as to form a gap between the seal and the wellhead housing. The wellhead assembly can further include a seal energizer capable of moving relative to the seal in a manner that forces the seal against the wellhead housing to bridge the gap. A method of installing a tubing hanger into a throughbore of a wellhead housing is also disclosed.

US Patent:

8464795, Jun 18, 2013

Filed:

Aug 19, 2009

Appl. No.:

12/544011

Inventors:

Andy Dyson - Stonehaven, GB
Charles Li - Spring TX, US
Oystein Mogedal - Oslo, NO
Paulo Cezar Silva Paulo - Katy TX, US
Casey Russell - Cypress TX, US
Nick Newlands - Oslo, NO

Assignee:

Aker Solutions Inc. - Houston TX

International Classification:

E21B 34/02

US Classification:

1663341, 1663321, 166386, 166 861, 137496

Abstract:

An annulus isolation valve comprises a valve actuation bore and a flow passage capable of providing fluid communication between an upper annulus and a lower annulus. The flow passage comprises a first flow path and a portion of the valve actuation bore. Further, the first flow path has a second longitudinal axis that is different from a first longitudinal axis. The annulus isolation valve further includes a plug gate positioned in the valve actuation bore. The plug gate is configured so that in the open position it allows fluid communication between the upper annulus and the lower annulus. The annulus isolation valve further includes a biasing mechanism positioned in the valve actuation bore. The biasing mechanism is capable of forcing the plug gate into the closed position when the actuation force is not applied.

US Patent:

20090266551, Oct 29, 2009

Filed:

Apr 21, 2009

Appl. No.:

12/427566

Inventors:

Glen H. Cuiper - Spring TX, US
Paulo Cesar Silva Paulo - Katy TX, US
Andre Smith - Lier, NO

International Classification:

E21B 33/035
E21B 33/03
E21B 33/076

US Classification:

166338, 166368

Abstract:

An internal tree cap having a running configuration and a latched configuration to be selectively secured to a tree spool. The tree cap may include an inner sleeve movable between upper and lower positions. The movement of the inner sleeve to the lower position may simultaneously engage a locking profile within the tree spool and energize a sealing element around the exterior of the tree cap. The tree cap may be a low profile tree cap that is flush with the top of the tree spool when installed. The tree cap may provide a collateral beneficial locking means to secure a tubing hanger within the tree spool. A lower housing may be attached to the tree cap to seal on the exterior of the upper neck of the tubing hanger. The tree cap may include a profile to accept a wireline plug.

US Patent:

20100147388, Jun 17, 2010

Filed:

Dec 10, 2009

Appl. No.:

12/634964

Inventors:

Paulo Cezar Silva Paulo - Katy TX, US

International Classification:

F15D 1/00
F16K 3/00

US Classification:

137 1, 251326

Abstract:

A directional gate valve is disclosed. The gate valve comprises a valve body. A first flow path, a second flow path and a third flow path are positioned in the valve body. The second and third flow paths are capable of fluidly communicating with the first flow path through a connecting flow configuration. A gate is positioned within the gate valve at a location separate from the connecting flow configuration. The gate is configured to move back and forth between a first position and a second position in the valve body. When the gate is in the first position the gate provides fluid communication through the second flow path and simultaneously blocks fluid communication through the third flow path. When the gate is in the second position the gate provides fluid communication through the third flow path and simultaneously blocks fluid communication through the second flow path.

US Patent:

20100147527, Jun 17, 2010

Filed:

Dec 10, 2009

Appl. No.:

12/634957

Inventors:

PAULO CEZAR SILVA PAULO - Katy TX, US

International Classification:

E21B 43/01
E21B 41/00

US Classification:

166339, 166351

Abstract:

A subsea boosting cap system is disclosed. The system comprises an anchor assembly capable of attaching to the sea floor. The anchor assembly comprises a pump cavity capable of receiving a removable pump assembly. A valve system is attached to the anchor assembly. The valve system comprises an inlet flow path and an outlet flow path. A boosting cap covers the pump cavity. The boosting cap comprises a first flow path configured to provide fluid communication between the inlet flow path and the removable pump assembly. A second flow path provides fluid communication between the removable pump assembly and the outlet. A crossover flow path provides fluid communication between the inlet flow path and the outlet flow path, the crossover flow path bypassing the pump cavity.

US Patent:

20120292038, Nov 22, 2012

Filed:

Jul 24, 2012

Appl. No.:

13/556954

Inventors:

Glen H. Cuiper - Spring TX, US
Paulo Cezar Silva Paulo - Katy TX, US

International Classification:

E21B 41/04

US Classification:

166344

Abstract:

A variable buoyancy subsea running tool for use with subsea transportable devices, such as a tree cap. The buoyancy of the running tool may be varied through fluid or gas displacement in one or more containers. Alternatively, the running tool may be configured with a buoy that has static buoyancy, with the buoyancy of the running tool being varied through the addition of a counterweight. The running tool can be used to install or uninstall a tree cap on a subsea tree. Installation of a tree cap may be actuated by a remotely operated vehicle. Additionally, the running tool may be moved by a remotely operated vehicle and may have additional features such as a position locator device.