Paulo Silva

Tubing Hanger

Application

#8256506 Sep 4, 2012

Filed

Aug 19, 2009

Inventor

Andy Dyson (Stonehaven, GB) · Charles Li (Spring, TX) · Oystein Mogedal (Oslo, NO) · Paulo Cezar Silva Paulo (Katy, TX) · Nick Newlands (Oslo, NO)

Appl. No.

12/543929

Assignee

Aker Subsea Inc. (Houston, TX)

International Classification

E21B 23/00, E21B 43/10

U.S. 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.

Subsea Actuator With Magnetic Return

Application

#2018029 Oct 11, 2018

Filed

Nov 30, 2017

Inventor

Paulo Cezar Silva PAULO (Katy, TX)

Appl. No.

15/827900

Assignee

CHEVRON U.S.A. INC. (San Ramon, CA)

International Classification

E21B 34/06, F16K 31/06

Abstract

The present invention is directed to a subsea actuator with magnetic return. The subsea actuator with magnetic return is assembled to a subsea valve. The subsea actuator with magnetic return allows subsea actuators to be designed with increased reliability and a reduction in size. The reduction in size also provides opportunities to reduce the size of the topsides hardware that supports the subsea valve function.

Low Profile Internal Tree Cap

Application

#2009026 Oct 29, 2009

Filed

Apr 21, 2009

Inventor

Glen H. Cuiper (Spring, TX) · Paulo Cesar Silva Paulo (Katy, TX) · Andre Smith (Lier, NO)

Appl. No.

12/427566

Assignee

Glen H. Cuiper (Spring, TX) · Paulo Cesar Silva Paulo (Katy, TX) · Andre Smith (Lier, NO)

International Classification

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

U.S. 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.

Variable Buoyancy Subsea Running Tool

Application

#8235124 Aug 7, 2012

Filed

Jul 2, 2009

Inventor

Glen H. Cuiper (Spring, TX) · Paulo Cezar Silva Paulo (Katy, TX)

Appl. No.

12/497250

Assignee

Aker Subsea Inc. (Houston, TX)

International Classification

E21B 7/21

U.S. 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.

Intrinsically Safe Circuit Design For An Optical System Interface In A Spectroscopic Analyzer

Application

#2016026 Sep 15, 2016

Filed

Mar 9, 2016

Inventor

Juergen Dessecker (Rancho Cucamonga, CA) · Harald Mueller (Rancho Cucamonga, CA) · Nikolai Fink (Rancho Cucamonga, CA) · William Boyle (Rancho Cucamonga, CA) · Peter Dorn (Rancho Cucamonga, CA) · Paulo Silva (Rancho Cucamonga, CA)

Appl. No.

15/065783

Assignee

Juergen Dessecker (Rancho Cucamonga, CA) · Harald Mueller (Rancho Cucamonga, CA) · Nikolai Fink (Rancho Cucamonga, CA) · William Boyle (Rancho Cucamonga, CA) · Peter Dorn (Rancho Cucamonga, CA) · Paulo Silva (Rancho Cucamonga, CA)

International Classification

G01N 21/31, G01N 33/00

Abstract

A laser spectrometer can be operated for analysis of one or more analytes present in a combustible gas mixture. The spectrometer can include one or more features that enable intrinsically safe operation. In other words, electrical, electronic, thermal, and/or optical energy sources can be limited within an hazardous are of the spectrometer where it is possible for an explosive gas mixture to exist. Methods, systems, articles and the like are described.

Directional Gate Valve

Application

#2010014 Jun 17, 2010

Filed

Dec 10, 2009

Inventor

Paulo Cezar Silva Paulo (Katy, TX)

Appl. No.

12/634964

Assignee

Paulo Cezar Silva Paulo (Katy, TX)

International Classification

F15D 1/00, F16K 3/00

U.S. 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.