Microencapsulated oil field chemicals

Details Microencapsulated oil field chemicals Microencapsulated oil field chemicals

1992-05-05

1999-07-13

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507131, 507133, 507902, 264 43, 4284022, C09K 700

Patent

active

059226528

ABSTRACT:
Gelatin capsules containing oil field chemicals, preferably weighted with a heavy metal compound, are made more stable under certain conditions by the incorporation of a strong chelating agent. The microcapsules can provide an extended treatment period since many materials that would damage the microcapsules are controlled by the chelating agent.

REFERENCES:
patent: 2800457 (1957-07-01), Green et al.
patent: 3676363 (1972-07-01), Mosier
patent: 3697437 (1972-10-01), Fogel et al.
patent: 3965033 (1976-06-01), Matsukawa et al.
patent: 4010038 (1977-03-01), Iwasaki et al.
patent: 4917893 (1990-04-01), Okaka et al.
patent: 5068042 (1991-11-01), Hen
patent: 5112505 (1992-05-01), Jacobs et al.

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