1. Product characteristics

Anionic polyacrylamide is a kind of White or yellow powder,non-toxic,non-corrosive,easily solubale in water,mainly used as a selective flocculant for non-dispersed,low solid phase water-based drilling fluid.itcan help to reduce water losses,improve drilling fluid rheological properities and reduce the friction resistance as well. 

2.specifications

 3. Application

In oil exploitation, anionic polyacrylamide is mainly used for drilling mud as well as Enhanced Oil Recovery, etc., which is widely used in drilling, completion, cementing,fracturing, enhanced oil recovery and other mining operations in the oil field. ZL’s products have been used successfully for many years as drilling mud additives for flocculant , dispersants, blocking agent , lubricants , fluid loss additive, and shale inhibition agent etc. With the continues progress, ZL devotes to develop the products with optimum performance to meet the increased requirement of water based drilling fluid.

Flocculant The polarity gene adsorbs the solid particles dispersed in water, bridges between the particles and formats the large aggregates, sedimentation and separates of water, flocculates detritus and clay in drilling fluid.

Dispersant In the drilling mud treatment, anionic polyacrylamide can improve the lubricity and stability of the mud to reduce the water loss, prevent sticking effectively, increase drilling efficiency.

Blocking Agent anionic polyacrylamide can generate cross linking under the effect of Al3+, Fe 3+, Ca2+ and other ions, a part of high molecular compound is changed from linear shape into body shapes. The product is not water-soluble, and can be adsorbed on the borehole to block ground layer gaps and to prevent the leakage of drilling fluid.

Lubricant anionic polyacrylamide can be absorbed on the surface of metal or clay particles to form liquid film to change friction on the solid surface into liquid frication, thereby lubricating drill bits and drills, lowering the mud cake frication coefficient, and reducing underground accidents.

Fluid Loss Additive The hydrolysis degree is higher, the hydration group on the molecular chain is more, the hydration is better, and it changes from flocculant into fluid loss additive. Drilling mud should be treated to keep cake’s permeability as low as possible in order to maintain a stable borehole and to minimize filtrate invasion, and damage to the pay zone.

Shale Inhibition Agent The multi-point adsorption of polymer formats to the criss-cross membrane macromolecules, plays a role of enhancing the stability of borehole.

4.Useing Instruction

1. Powdered polyacrylamide is unfavorable to be used directly. It must be dissolved by clean water (such as tap water) before using. Then add according to certain proportion.

2. It is recommended that the concentration during dissolving keeps 0.1%-0.3% and do the second attenuation before using.

3. Add the polyacrylamide slowly and evenly into the water tank with stirrer while the mixing speed should not be strong (stirring speed is advisable to 100-300 rm) to avoid decreasing of polyacrylamide shear force. It is easy to clump together and form “fish eye” if feed too fast.

4. The water temperature should not exceed 60 and room temperature is fine.

5. The storage of configured polyacrylamide solution: cationic PAM should not be more than a day and anionic PAM should not be more than two days to avoid degradation.

6. Keep the solution far away from iron ion because the iron ion is catalyst which is easy to make the polyacrylamide resolve.

7.  It is recommended to use diaphragm or vacuum pump or low pressure centrifugal pump when pump the materials (because the high speed rotary pumps make polyacrylamide degradation).

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