Method of generating gas bubbles in oleaginous liquids

Patent 6649571 Issued on November 18, 2003. Estimated Expiration Date:

April 4, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventor

Morgan, Julie Benedetta Maria Aline

Application

No. 09/542817 filed on 04/04/2000

US Classes:

507/102, Contains intended gaseous phase at entry into wellbore507/127, Organic component contains silicon attached directly or indirectly to carbon by nonionic bonding507/202, Contains intended gaseous phase at entry into wellbore507/233, Organic component contains silicon attached directly or indirectly to carbon by nonionic bonding516/13The agent contains organic compound containing phosphorus or silicon

Examiners

Primary: Tucker, Philip

Attorney, Agent or Firm

International Classes

B01F 3/04 (20060101)
C09K 8/02 (20060101)
C09K 8/32 (20060101)

Abstract

Disclosed is a method of generating microbubbles in oleaginous liquids which comprises adding a silicone oil to the oleaginous liquid and thereafter subjecting the liquid to mechanical forces in the presence of a gas. Also disclosed are oil base well drilling and servicing fluids having a low shear rate viscosity as measured with a Brookfield Viscometer at 0.5 rpm of at least 10,000 centipoise and having incorporated therein microbubbles generated by the disclosed method, and a method of drilling a well wherein there is circulated within the wellbore during drilling the oil base, microbubble-containing fluid disclosed.

Other References

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