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Title: Cementing a wellbore using cementing material encapsulated in a shell

Patent ·
OSTI ID:1346966
; ; ; ; ; ;

A system for cementing a wellbore penetrating an earth formation into which a pipe extends. A cement material is positioned in the space between the wellbore and the pipe by circulated capsules containing the cement material through the pipe into the space between the wellbore and the pipe. The capsules contain the cementing material encapsulated in a shell. The capsules are added to a fluid and the fluid with capsules is circulated through the pipe into the space between the wellbore and the pipe. The shell is breached once the capsules contain the cementing material are in position in the space between the wellbore and the pipe.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC
Patent Number(s):
9,593,552
Application Number:
15/226,512
OSTI ID:
1346966
Resource Relation:
Patent File Date: 2016 Aug 02
Country of Publication:
United States
Language:
English

References (12)

Use of radiation-induced polymers in cement slurries patent February 1976
Method for primary cementing a well with a drilling mud which may be converted to cement using chemical initiators with or without additional irradiation patent August 1988
Method for primary cementing a well using a drilling mud composition which may be converted to cement upon irradiation patent September 1988
Melamine/formaldehyde cross-linking of polymers for profile control patent November 1988
Enhanced oil recovery profile control with crosslinked anionic acrylamide copolymer gels patent January 1992
High temperature stable gels patent September 1993
Enhancing gel strength patent January 2000
Well cementing methods using compositions containing liquid polymeric additives patent July 2001
Hydrocapsules and method of preparation thereof patent August 2004
Crosslinkable polymer compositions and associated methods patent October 2007
Casing strings and methods of using such strings in subterranean cementing operations patent December 2007
Radiation-induced thickening for set-on-command sealant compositions and methods of use patent April 2012

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