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AP-1 Polyamine Shale Inhibitor
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Shale Inhibitor


Product Description

AP-1 is a new type of shale inhibitor used in high-performance water based drilling fluid, which is a poly-amine-modified polyether polyols shale inhibitor. AP-1 possesses good cationic absorbability, inhibitory capacity and a long duration of action. It has overcome the problems which caused by cation, such as serious flocculation, increase water loss and so on. Since the introduction of amines compounds to molecular chain, which give it greater shale inhibition and its anti-collapse mechanism is different from the ordinary polyether products. It mainly depends on the special structure which firmly absorbs on the clay to reduce the clay layer spacing to prevent water from invading into the formation in order to stabilize the borehole. The product can be directly added to all kinds of water-base drilling. The recommend dosage is 0.5-1.0% (v/v).

Technical Specification:




Light yellow viscous liquid

pH (2% water soluble solution)


Freezing point, ℃


Fluorescence grade


The increased ratio of the third time shale recovery, %


Note: The ratio of first time shale cuttings recovery in distilled water shall be 20 - 40%.



Inhibit shale effectively with minimal viscosity and filtration loss increasing, control the clays dispersing, prevent bit balling. It’s especially suitable for soft mud stone formation, salt gypsum formation and water-sensitive formation and other complex formation.

Resist salt, calcium and magnesium and can be applied to freshwater, saltwater and seawater drilling and completion fluids.

Resist high temperature up to 200 ℃, can be applied to deep well and ultra-deep wells.

Freezing point is low, has cold-resistance, can be used for cold areas. 

Protect oil and gas reservoirs.

Package and Storage

It is a liquid packaged in 5 gal cans and 55 gal drums. International packaging may vary. And they shall be stored in a shady and dry place with good ventilation.


They shall be avoided contact with eyes, skins and clothes, otherwise flush it with water. Handling methods and dangerous data shall be referred to MSDS.

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