Anionic Polyacrylamide APAM with 0.05% Max Residual Monomer for Borehole Wall Stability in 25kg Kraft Paper Bag

Product overview

Borehole instability can arise from chemical interaction with shale, mechanical stress, erosion or a combination of factors. Where water sensitivity and cuttings dispersion are relevant, a compatible anionic polymer may be evaluated as part of the fluid's inhibition and solids-management program.

Bluwat approaches this application through grade selection and representative testing. A low residual-monomer specification is an important purchasing characteristic, but it does not establish wellbore-stabilization performance. Mud density, hydraulics, formation conditions and the complete additive package must remain part of the engineering assessment.

Product benefits

Technical specifications

Grade selection for this application

Describe the instability symptoms and provide shale information, fluid composition, water chemistry and expected temperature exposure. Separate hydration-related behavior from mechanically driven collapse or erosion so the chemical screening addresses the actual problem.

Choose candidate grades using both shale-response tests and fluid-property limits. The pH of a 1% product solution is not a borehole operating-pH recommendation. Likewise, the 0–35°C storage range describes powder storage and does not define the polymer's downhole temperature capability.

Application evaluation and use

Solution preparation and dosing

Use clean, compatible make-up water and add the powder gradually into an established mixing flow. Avoid dumping powder in one location, which can create lumps with dry cores. The TDS gives 0.1–0.5% as general solution-preparation guidance. If specified on an as-supplied powder mass basis, this corresponds to 1–5 kg of powder per 1,000 kg of final solution; agree the concentration basis for the project.

Allow approximately one hour of agitation as a starting reference, then confirm complete hydration. Water quality, temperature, grade and equipment affect the required time. The TDS’s 200–400 rpm reference is equipment dependent and should not be scaled to a different tank solely by rpm. Avoid severe shear after hydration. Determine the final treatment dosage through the application tests described above.

Packaging storage and handling

The featured packaging is a 25 kg kraft paper bag with an inner plastic liner. The TDS also lists 25 kg kraft paper or PE bags and 750 kg net big bags. Store powder dry, protected from direct sunlight and at 0–35°C. Keep opened packaging tightly closed. Consult the current SDS for handling, spill control and personal protection.

Why choose Bluwat Chemicals

Frequently asked questions