Earth boring – well treating – and oil field chemistry – Well treating – Contains intended gaseous phase at entry into wellbore
Reexamination Certificate
2005-02-22
2005-02-22
Tucker, Philip C. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Well treating
Contains intended gaseous phase at entry into wellbore
C507S269000, C507S239000, C507S244000, C507S247000, C166S293000, C166S309000, C106S672000, C106S673000, C106S677000, C106S678000
Reexamination Certificate
active
06858566
ABSTRACT:
The present invention relates to methods of generating gas in and forming cement compositions that may be introduced into a subterranean zone. A method of the present invention provides a method of generating gas in a cement composition that comprises providing the cement composition comprising a hydraulic cement and water; providing an oxidizing agent; providing at least one gas generating chemical; and contacting the cement composition with the oxidizing agent and/or the gas generating chemical downstream of at least one cement pump so that a gas is generated in the cement composition downstream of at least one cement pump. Methods of foaming cement compositions are also provided.
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Paper entitled “Specification for Materials and Testing for Well Cement” by American Petroleum Institute, dated Jul. 2001.
Cromwell Roger S.
Luke Karen
Reddy B. Raghava
Waugh Bryan K.
Halliburton Energy Service,s Inc.
Roddy Craig W.
Tucker Philip C.
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