Cesar Garcia

20120055684, Mar 8, 2012

Sep 8, 2010

12/877215

Patrick J. Zimmerman - Houston TX, US
David Ward - Houston TX, US
Cesar G. Garcia - Katy TX, US

WEATHERFORD/LAMB, INC. - Houston TX

E21B 33/12
E21B 34/00

166386, 166318

For wellbore fluid treatment, sliding sleeves deploy on tubing in a wellbore annulus. Operators deploy a plug down the tubing to a first sleeve. The plug seats in this first sleeve, and pumped fluid pressure opens the first sleeve and communicates from the tubing to the wellbore annulus. In the annulus, the fluid pressure creates a pressure differential between the wellbore annulus pressure and a pressure chamber on second sleeves on the tubing. The resulting pressure differential opens the second sleeves so that fluid pressure from the tubing can communicate through the second open sleeves. Using this arrangement, one sleeve can be opened in a cluster of sleeves without opening all of them at the same time. The deployed plug is only required to open the fluid pressure to the annulus by opening the first sleeve. The pressure chambers actuate the second sleeves to open up the tubing to the annulus.

20130043042, Feb 21, 2013

Aug 7, 2012

13/568774

Antonio B. Flores - Houston TX, US
David Ward - Houston TX, US
Cesar G. Garcia - Katy TX, US

Weatherford/Lamb, Inc. - Houston TX

E21B 23/02
E21B 34/06

166373, 166194

A system of sliding valves wherein the inserts of multiple sliding valves may be shifted to an open position using a single shifting ball. Each individual sliding valve has a movable insert that, depending upon the position of the insert within the sliding valve, may either block or permit fluid to radially flow between the interior and exterior of the sliding valve. The insert has a profile about the interior of the movable insert allowing a shifting tool to connect to and move the insert so that fluid may be prevented from entering the interior portion of the sliding sleeve.

20190218888, Jul 18, 2019

Mar 22, 2019

16/361754

- Houston TX, US
Cesar G. Garcia - Houston TX, US
Matthew Priesmeyer - Houston TX, US
Dick S. Gonzalez - Houston TX, US

E21B 34/14
E21B 34/10
E21B 43/14

A completion apparatus for a wellbore includes several flow tools and an actuation mechanism. The flow tools have a piston defining first and second chambers with a housing. The chambers communicate with hydraulics so the piston are movable in response to the communicated hydraulics. A sleeve disposed in the housing is movable with the piston between first, second, and third positions. The sleeve can have a seat movable between two conditions for passing/engaging plugs. The sleeve in the first position closes off communication through the first and second ports, and the sleeve in the second position permits communication through the first port and closes off communication through the second port. The sleeve in the third position closes off communication through the first port and permits communication through the second port. The actuation mechanism is operable to communicate the hydraulics respectively with the chambers of the flow tools.

20170241238, Aug 24, 2017

Feb 21, 2017

15/437492

- Houston TX, US
Cesar G. Garcia - Houston TX, US
Matthew Priesmeyer - Houston TX, US
Dick S. Gonzalez - Houston TX, US

E21B 34/14
E21B 43/14
E21B 34/10

A completion apparatus for a wellbore includes several flow tools and an actuation mechanism. The flow tools have a piston defining first and second chambers with a housing. The chambers communicates with hydraulics so the piston are movable in response to the communicated hydraulics. A sleeve disposed in the housing is movable with the piston between first, second, and third positions. The sleeve can have a seat movable between two conditions for passing/engaging plugs. The sleeve in the first position closes off communication through the first and second ports, and the sleeve in the second position permits communication through the first port and closes off communication through the second port. The sleeve in the third position closes off communication through the first port and permits communication through the second port. The actuation mechanism is operable to communicate the hydraulics respectively with the chambers of the flow tools.

20150152714, Jun 4, 2015

Nov 26, 2014

14/555087

- Houston TX, US
Alison GROGAN - The Woodlands TX, US
Jason BRASSEAUX - Cypress TX, US
Cesar G. GARCIA - Katy TX, US

E21B 34/14
E21B 43/26

The present invention generally concerns the treatment of hydrocarbon-bearing formations adjacent a wellbore. In one embodiment, fracturing jobs are performed through the use of subs disposed in a casing string having profiles that interact with profiles formed on retractable keys of a tool.

20140166292, Jun 19, 2014

Dec 12, 2013

14/104367

- Houston TX, US
David Ward - Houston TX, US
Cesar G. Garcia - Katy TX, US
Iain M. Greenan - Houston TX, US

Weatherford/Lamb, Inc. - Houston TX

E21B 34/14
E21B 43/26

1663081, 166319, 166374, 166194

A sliding sleeve opens with a deployed ball. The sleeve has a seat disposed in the housing, and the seat has segments biased outward from one another with a C-ring or other biasing element. Initially, the seat has an expanded state in the sliding sleeve so that the seats segments expand outward against the housing's bore. When an appropriately sized ball is deployed downhole, the ball engages the expanded seat. Fluid pressure applied against the seated ball moves the seat into the inner sleeve's bore. As this occurs, the seat contracts, which increases the engagement area of the seat with the ball. Eventually, the seat reaches the shoulder in the inner sleeve so that pressure applied against the seated ball now moves the inner sleeve in the housing to open the sliding sleeve's flow port.