Methods and compositions for preventing high density well completion fluid loss
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United States of America Patent
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Dec 7, 1999
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N/A
app pub date -
Nov 20, 1997
filing date -
Nov 20, 1997
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Abstract
Methods and compositions for preventing high density well completion fluid loss are provided. The methods basically comprise the steps of preparing a high density cross-linked aqueous gelled composition having the rigidity required to resist entry into a permeable subterranean formation penetrated by a well bore, placing the high density cross-linked aqueous gelled composition in the portion of the well bore within the permeable subterranean formation and placing a high density completion fluid in the well bore behind the high density cross-linked gelled composition.
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