First, the use of products
Drilling fluid with the emulsion polymer inhibitor ds-301 is "K" with acrylamide (AM) and hydroxyethyl trimethyl ammonium chloride copolymer. The product of shale were more strongly adsorbed, especially of mud in harmful ingredients, the mud node cured high valence metal ions with selective adsorption and flocculation. Therefore, inhibition of shale hydration, controlled the formation mud making, reducing filter loss, achieve strongly inhibited at the same time, does not weaken the stability of the colloid system, improve sidewall stability, reduce the damage of oil and gas reservoir. This product also has certain anti - collapse and increasing viscosity, can optimize the drilling fluid rheological properties.

Two, technical requirements

 

Table 1 physicochemical performance index

Project	Index
Appearance	White or pale yellow emulsion
Average molecular weight	≥6.0×106
Solid content，%	≥28.0
pH Value	5.0～8.0

Table 2 drilling fluid performance index

Project	Pulp performance index	Detection index
Apparent viscosity of fresh water slurry，mPa·s	7～10	≥25
Apparent viscosity of compound salt water slurry，mPa·s	4～6	≥15

Three, the use of methods
This product is directly added to the slurry mixed preparation, mixing should not be added too fast, generally not more than 1kg/min, to prevent excessive feeding, colloidal aggregation.

Four, storage and transportation
1 products stored in ventilated, dry place, prevent direct sunlight, far away from the fire source.
2 in the process of transportation and handling to prevent violent collision, extrusion, inversion, so as to avoid leakage.

Five, matters needing attention
In the use process, the staff shall wear labor protection supplies, to prevent products splashed into the eyes or contact to the skin, once the occurrence of the above phenomenon, immediately wash with plenty of water, in serious cases, timely medical treatment. Sprinkle on the ground should be as far as possible, for a small number of products with soil landfill, you can also use a large amount of water to wash, wash water into the waste water system.