Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2007-07-24
2007-07-24
Suchfield, George (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
C166S292000, C166S300000, C175S072000, C106S685000, C106S686000, C507S140000, C507S145000
Reexamination Certificate
active
10837804
ABSTRACT:
The present invention relates to settable compositions that comprise magnesium oxide and at least one divalent salt and associated methods of use. In some embodiments, the present invention discloses methods of a forming a hardened mass comprising providing a settable composition comprising magnesium oxide, and a brine comprising water and a divalent salt; placing the settable composition into a desired location; and allowing the settable composition to set to form the hardened mass. In other embodiments, the present invention discloses methods of forming a hardened mass in a subterranean formation comprising placing a brine comprising water and a divalent salt into the subterranean formation; contacting the brine with magnesium oxide; and allowing the brine and the magnesium oxide to react to form the hardened mass. In other embodiments, the present invention discloses methods forming a casing in a well bore, and converting a drilling fluid to a settable composition.
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Foreign communication from a related counterpart application dated Sep. 9, 2005.
Paper Entitled “Acid-Soluble Magnesia Cement: New Applications in Completion and Workover Operations”, By Ronald E. Sweatman et al.
Almond Stephen W.
Foster Ryan M.
Baker Botts, LLC.
Halliburton Energy Service,s Inc.
Roddy Craig W.
Suchfield George
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