Microencapsulated oil field chemicals and process for their use

Details Microencapsulated oil field chemicals and process for their use Microencapsulated oil field chemicals and process for their use

E - Fixed Constructions

21

B

E21B 43/25 (2006.01) B01J 13/00 (2006.01) C09K 8/536 (2006.01) C09K 8/54 (2006.01) C09K 8/92 (2006.01) E21B 37/06 (2006.01) E21B 41/02 (2006.01)

Patent

CA 2134980

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.

Des capsules gélatineuses contenant des produits chimiques provenant de champs pétrolifères, lestés de préférence par un composé de métaux lourds, sont rendues plus solides dans certaines conditions, par l'incorporation d'un agent à fort pouvoir de chélation. Les microcapsules peuvent assurer une période de traitement prolongée étant donné que plusieurs matières risquant d'altérer les microcapsules sont maîtrisées par l'agent de chélation.

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