Shale-stabilizing drilling fluids and method for producing same
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United States of America Patent
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Jan 12, 1988
Issued Date -
N/A
app pub date -
Oct 16, 1986
filing date -
Nov 28, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Shale-stabilizing drilling fluids for use in connection with subterranean well drilling operations. The drilling fluids contain polyvalent metal/guanidine complexes, especially aluminum/guanidine complexes, and preferably contain guanidinium ion and aluminate ion accompanied by (a) cationic starches and (b) a glycol selected from the group consisting of polybutylene glycol, polyethylene glycol, polypropylene glycol and mixtures thereof.
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