Well treating compositions for slow release of treatment...

C - Chemistry – Metallurgy – 09 – K

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C09K 8/60 (2006.01) C09K 8/52 (2006.01) C09K 8/54 (2006.01)

Patent

CA 2530239

A composite of a well treatment agent adsorbed onto a water-insoluble adsorbent is useful in the treatment of oil and gas wells and may be introduced, as a well treatment fluid, with a carrier fluid. The water-insoluble adsorbent may be activated carbon, silica particulate, precipitated silica, zeolite, diatomaceous earth, ground walnut shells, fuller's earth and organic synthetic high molecular weight water-insoluble adsorbents. Suitable as the well treatment agent are scale inhibitors, corrosion inhibitors, paraffin inhibitors, salt inhibitors, gas hydrate inhibitors, asphaltene inhibitors, oxygen scavengers, biocides, foaming agent, emulsion breakers and surfactants.

Un composite d'un agent de traitement de puits adsorbé sur un adsorbant insoluble dans l'eau est utile dans le traitement de puits de pétrole et de gaz et peut être introduit, en tant que fluide de traitement de puits, avec un fluide porteur. L'adsorbant insoluble dans l'eau peut être du charbon actif, de la silice particulaire, de la silice précipitée, de la zéolite, de la terre de diatomées, des coques de noix moulues, de la terre à foulon et des adsorbants insolubles dans l'eau organiques synthétiques à poids moléculaire élevé. Ceci est approprié, étant donné que les agents de traitement de puits sont des antitartres, des inhibiteurs de corrosion, des inhibiteurs de paraffine, des inhibiteurs de sel, des inhibiteurs d'hydrate de gaze, des inhibiteurs d'asphaltene, désoxygénants, des biocides, des moussants, des briseurs d'émulsion et des agents de surface.

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