Polymer shell encapsulated gas as a cement expansion additive

Details Polymer shell encapsulated gas as a cement expansion additive Polymer shell encapsulated gas as a cement expansion additive

2003-01-23

2009-02-24

Zemel, Irina S (Department: 1796)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C106S677000, C106S713000, C106S724000, C521S056000, C166S387000, C166S292000

Reexamination Certificate

active

07494544

ABSTRACT:
Cement compositions containing an expandable material are disclosed. The compositions are suitable for use in oil and gas wells. An example of such an expandable material is a polymer encapsulated chemical that expands upon heating. Examples of cement compositions containing polymer encapsulated isobutane or isopentane are disclosed. The use of cement compositions containing an expandable material can reduce the formation of micro-annulus or other deleterious physical properties in the set cement.

REFERENCES:
patent: 3021291 (1962-02-01), Thiessen
patent: 3649317 (1972-03-01), Houseknecht
patent: 4057526 (1977-11-01), de Rook
patent: 4302549 (1981-11-01), Crowley
patent: 5124186 (1992-06-01), Wycech
patent: 5872189 (1999-02-01), Bett et al.
patent: 6508305 (2003-01-01), Brannon et al.
patent: 2001/0018072 (2001-08-01), Unger
patent: 2004/0097656 (2004-05-01), Nyhus et al.
patent: 2402434 (2001-09-01), None
patent: 743866 (1953-05-01), None
patent: 2 083 099 (1979-12-01), None
patent: 06313130 (1994-11-01), None
British Examination Report dated Apr. 6, 2006 for GB Application No. 0401476.7.
Website printout “The Product;” www.expancel.com; printed Apr. 21, 2003.
Website printout Boud Minerals & Polymers; Supplying Minerals and polymers to industry; printed Nov. 21, 2002; www.boud.com.
“Real-Time Cement Expansion/Shrinkage Testing Under Downhole Conditions for Enhanced Annular Isolation;” Virgilio C. Goboncan, SPE, Robert L. Dillenbeck, SPE, BJ Services; SPE/IADC; Feb. 2003.
“Chemical Resistance of Expancel; Unexpanded Microspheres;” Technical Bulletin No. 7; Oct. 1, 2001.

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