PHPA Polymer for Water Based Drilling Fluid with High Molecular Weight and Shale Stabilization Performance
Product Overview
BLUFLOC PHPA Polymer is a high molecular weight partially hydrolyzed polyacrylamide designed for water based drilling fluid systems. It is used as a drilling mud polymer additive where shale stabilization, borehole protection, cuttings encapsulation and mud performance improvement are required.
In oil and gas drilling, water based drilling mud is widely used because it is practical and cost effective. However, when water based mud contacts shale and clay rich formations, water may enter the formation and cause shale swelling, dispersion and borehole instability. These problems can lead to sloughing shale, poor hole cleaning, stuck pipe risk, higher solids loading and unstable drilling fluid performance.
BLUFLOC PHPA Polymer helps improve the stability of water based mud by forming a high molecular weight polymer structure in the fluid system. It can help encapsulate cuttings, reduce shale dispersion, support viscosity control, improve lubrication and protect the borehole wall.
This product is suitable for oilfield drilling contractors, mud service companies, drilling chemical suppliers and distributors who need a high molecular weight PHPA polymer for water based drilling fluid and shale stabilization applications.

Key Product Features
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | PHPA Polymer |
| Full Name | Partially Hydrolyzed Polyacrylamide |
| Brand | BLUFLOC |
| Product Type | High Molecular Weight Anionic PAM Powder |
| Ionic Type | Anionic |
| Appearance | Off White Granular Powder |
| Particle Size | 20 to 100 Mesh |
| Molecular Weight Range | 5 to 25 Million for Anionic Type |
| Anionic Degree Range | 5 to 100 Percent |
| Solid Content | Minimum 89 Percent |
| Bulk Density | About 0.8 |
| Residual Monomer | Max 0.05 Percent |
| Recommended Working Concentration | 0.1 to 0.5 Percent |
| pH of 1 Percent Solution | Around 6 to 8 for Anionic Type |
| Storage Temperature | 0 to 35 Degree C |
| Shelf Life | 2 Years |
| Package | 25 kg Bag or 750 kg Big Bag |
| Available Documents | TDS, MSDS and COA |
Main Applications in Water Based Drilling Fluid
Shale Stabilization
BLUFLOC PHPA Polymer is used to improve shale stabilization in water based drilling mud. It helps reduce shale hydration, swelling and dispersion, supporting more stable borehole conditions.
Cuttings Encapsulation
PHPA can help coat and encapsulate drilling cuttings. This reduces the tendency of cuttings to disperse into fine solids and helps maintain better drilling fluid quality during circulation.
Borehole Stability
Unstable shale formations may cause borehole enlargement, wall collapse and drilling interruptions. PHPA helps improve the mud system and supports borehole wall protection in sensitive formations.
Water Based Drilling Mud Additive
PHPA is suitable for water based drilling fluid systems where a high molecular weight anionic polymer is needed. It can be used as a shale control polymer, mud stabilizer and rheology support additive.
Drilling Fluid Viscosity Control
High molecular weight PHPA can help improve drilling mud viscosity and support better rheological control. Proper viscosity helps carry cuttings and maintain stable mud circulation.
Lubrication Support
The polymer solution formed by PHPA can support lubrication in water based drilling mud. Better lubrication helps reduce friction between drilling tools, borehole wall and drilling fluid.
Fluid Loss Control Support
PHPA can help improve mud structure and support fluid loss control when used in a suitable drilling fluid formulation. Better filtration behavior helps reduce water invasion into sensitive formations.
Solids Control Support
By reducing shale dispersion and improving cuttings encapsulation, PHPA helps limit the generation of fine solids in the mud system. This supports solids control and mud system stability.
Why PHPA Polymer Is Important in Water Based Mud
Water based drilling fluid is widely used in oilfield drilling, but shale control is often a major challenge. Active shale and clay formations can absorb water, swell, break apart and disperse into the mud system.
When this happens, the drilling fluid may become overloaded with fine solids, viscosity may become difficult to control and the borehole may become unstable.
PHPA polymer helps solve this problem by improving shale inhibition and cuttings encapsulation. It supports more stable water based mud performance and helps reduce formation related drilling problems.
Shale Stabilization Performance
The shale stabilization performance of PHPA comes from its high molecular weight polymer chains and anionic functional groups. After proper dissolution, PHPA can interact with shale and clay surfaces, helping reduce dispersion and improve cuttings integrity.
In practical drilling fluid systems, PHPA helps support:
Why High Molecular Weight Matters
High molecular weight is important because longer polymer chains can provide better viscosity building, stronger cuttings encapsulation and more effective solids suspension.
For water based drilling fluid, high molecular weight PHPA can help improve:
The suitable molecular weight should be selected according to water quality, salinity, temperature, mud formulation, shale activity and field performance target.
Working Mechanism in Drilling Fluid
After the PHPA powder is fully dissolved in water, it forms a viscous polymer solution. When added into a water based drilling mud system, the polymer chains disperse throughout the mud and interact with shale, clay particles and drilling cuttings.
This helps encapsulate cuttings, reduce shale hydration, improve mud viscosity and support better drilling fluid stability. In suitable formulations, PHPA can also improve lubrication and support fluid loss control.
Typical Problems This Product Can Help Improve
Recommended Solution Preparation
General Dosing Guidance
The actual dosage depends on drilling mud formulation, water salinity, temperature, mud density, shale activity, target viscosity, required inhibition performance and compatibility with other additives.
Laboratory testing or field trial is recommended before large scale application.
PHPA should be tested with the existing mud system to confirm compatibility with salts, fluid loss reducers, lubricants, weighting agents, pH adjusters and other drilling fluid additives.
Bluwat can provide product selection advice and dosing recommendations according to customer mud formulation and field conditions.
Suggested Application Process
Product Advantages for Oilfield Buyers
Packaging and Storage
Bluwat Factory Supply Capability
Bluwat Chemicals is a professional manufacturer and exporter of polyacrylamide and water treatment chemicals with more than 25 years of manufacturing experience.
Bluwat supplies anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide and emulsion polyacrylamide for oilfield drilling, EOR, oilfield wastewater treatment, mining, papermaking, municipal sewage treatment, industrial wastewater clarification and sludge dewatering.
For oilfield customers, Bluwat can provide technical support, sample support, TDS, MSDS, COA, product selection recommendations and customized PHPA grades according to water based drilling fluid requirements.
Available Documents
FAQ
PHPA Polymer is used for shale stabilization, cuttings encapsulation, borehole stability, drilling mud viscosity control, lubrication support and fluid loss control support in water based drilling fluid systems.
PHPA means partially hydrolyzed polyacrylamide. It is an anionic polyacrylamide polymer commonly used in drilling mud applications.
Yes. PHPA helps reduce shale swelling and dispersion, supporting better borehole stability in water based drilling mud systems.
High molecular weight helps improve viscosity, cuttings encapsulation, suspension capacity and mud stability.
Yes. PHPA can help coat and encapsulate drilling cuttings, reducing dispersion and supporting better solids control.
Yes. After proper dissolution, PHPA can support lubrication in water based drilling mud circulation.
The recommended working concentration is 0.1 to 0.5 percent.
Normally it takes about 1 hour under proper agitation conditions.
Yes. PHPA can be used with other drilling fluid additives, but compatibility testing is recommended before field application.
Yes. Bluwat can customize molecular weight, anionic degree and packaging according to customer drilling fluid requirements.










