COMPOSITIONS AND METHODS FOR TREATING LOST CIRCULATION
A composition for well cementing comprising water, cement and a blend of solid material wherein said material comprises a mixture of at least two additives selected from the list consisting of rubber, poly 2 2 1 bicyclo heptene (polynorbomene), alkylstyrene, crosslinked substituted vinyl acrylate co...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A composition for well cementing comprising water, cement and a blend of solid material wherein said material comprises a mixture of at least two additives selected from the list consisting of rubber, poly 2 2 1 bicyclo heptene (polynorbomene), alkylstyrene, crosslinked substituted vinyl acrylate copolymers and diatomaceous earth |
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