Carlos L Aguilera

US Patent:

6752209, Jun 22, 2004

Filed:

Oct 1, 2001

Appl. No.:

09/968659

Inventors:

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

Assignee:

BJ Services Company - Houston TX

International Classification:

E21B 3313

US Classification:

166291, 166152, 1661774

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:

7032668, Apr 25, 2006

Filed:

May 17, 2004

Appl. No.:

10/847597

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, 166318

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:

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.