Juan Carlos Mondelli

US Patent:

7472753, Jan 6, 2009

Filed:

Apr 24, 2006

Appl. No.:

11/409725

Inventors:

Juan Carlos Mondelli - Houston TX, US
Carlos H. Aguilera - Houston TX, US

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B 33/16

US Classification:

166291, 166383, 166155, 166317

Abstract:

The present invention provides a cementing system and method for wellbores by cementing an annulus between a wellbore casing and a wellbore. In at least one embodiment, the invention includes a landing collar defining a restricted passage, a wellbore casing defining a passage coupled to the landing collar, a top cementing plug for sealingly engaging the wellbore casing, a bottom cementing plug for sealingly engaging the wellbore casing, and a fluid injection assembly coupled to the wellbore casing for injecting fluidic materials into the wellbore casing and controllably releasing the top cementing plug and the bottom cementing plug into the wellbore casing. The bottom cementing plug includes a plug body defining a plug passage, a frangible membrane for sealing the plug passage, and a one-way valve for controlling the flow of fluidic materials through the plug passage. The invention also includes the bottom cementing plug and methods for operation.

US Patent:

20030062161, Apr 3, 2003

Filed:

Oct 1, 2001

Appl. No.:

09/968659

Inventors:

Juan Mondelli - Houston TX, US
Carlos Aguilera - Houston TX, US

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B033/13

US Classification:

166/291000, 166/292000, 166/075150, 166/153000, 166/177400

Abstract:

A cementing system for wellbores.

US Patent:

20130248206, Sep 26, 2013

Filed:

Mar 20, 2013

Appl. No.:

13/847729

Inventors:

JAMES G. MARTENS - HOUSTON TX, US
JEFFREY J. ARCEMENT - HOUMA LA, US
JUAN CARLOS MONDELLI - HOUSTON TX, US
JOHN E. HEBERT - HOUMA LA, US
SCOTTIE J. SCOTT - HOUMA LA, US
THOMAS A. DUPRE' - HOUMA LA, US

International Classification:

E21B 19/24

US Classification:

166381, 1662411, 29428

Abstract:

A centralizer assembly having a tubular body member with upper and lower channels extending around the external surface of said central tubular body member. A bow spring assembly having bow spring members is installed around the outer surface of the tubular body member and can rotate about the outer surface of the central tubular body member. Bow spring heel supports prevent the bow spring members from contacting the outer surface of the central tubular member when compressed. Non-abrasive materials prevent damage to wellhead or other polished bore receptacles. A robust bolster frame protects the centralizer assembly during shipping, storage or other periods of non-use.

US Patent:

20130292135, Nov 7, 2013

Filed:

May 1, 2013

Appl. No.:

13/875007

Inventors:

James G. Martens - Houston TX, US
Juan Carlos Mondelli - Houston TX, US
Brad Groesbeck - Houston TX, US
John E. Hebert - Houma LA, US
Joseph Boudreaux - Houma LA, US

International Classification:

E21B 23/00

US Classification:

166381, 166 53

Abstract:

An apparatus for launching objects, such as during casing cementing operations, in wells having dual gradient fluid systems or certain downhole internal diameter restrictions. A launching assembly is located below a dual gradient valve or other restriction. In one embodiment, control lines extend from the earth's surface to the launching assembly and control actuation of the launching assembly. In an alternative embodiment, a receptacle assembly is positioned above a dual gradient valve or other restriction, with control lines extending from the receptacle assembly to the launching assembly. A dart or other triggering object is launched from the earth's surface to the receptacle assembly in order to control actuation of the launching assembly.