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Oil and gas production chemicals

Encapsulated inhibitor

Product features
This product is a kind of polyacrylamide copolymer, which can maintain the stable drilling fluid performance, inhibit the shale hydration expansion and keep the drilling cuttings from dispersive, easy to remove. This series of polymers has a molecular weight of 2-8 million, and has a good coating effect on cuttings in fresh water and salt water as well as saturated salt water, with a temperature tolerance of more than 130℃.

Technical indicators





White or light yellow free flowing powder

Solid content


Heat resisting performance



Salt resistance

Saturated brine

Saturated brine

Degree of hydrolysis


Sieve allowance


Apparent viscosity

≤20 mPa·s


Method of application
 The added amount is adjusted according to the field conditions to obtain the desired dispersion effect. The added amount is generally 0.1-0.4% in clear water and 0.4-1% in saturated brine. It is recommended to prepare 1-2% aqueous polymer solution before adding to drilling fluid as needed.

Store the product in a dry and cool place to avoid exposure to the sun. Shelf life is two years.

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