Drilling Fluid Additive for Shale Control and Fluid Loss Reduction

Product Introduction

PHPA (Partially Hydrolyzed Polyacrylamide) is a widely used polymeric drilling fluid additive designed to control shale reactivity, reduce fluid loss, and improve overall drilling fluid performance.
The BLUFLOC® PHPA Series from Bluwat Chemicals is an anionic, water-soluble polymer available in both powder and emulsion forms, engineered for use in oil & gas drilling, water well drilling, and industrial drilling applications.

By forming a protective polymer layer on shale surfaces and cuttings, PHPA effectively minimizes hydration, dispersion, and erosion, helping maintain stable wellbores even in highly reactive formations.

How PHPA Works in Drilling Fluids

Unlike conventional inorganic inhibitors, PHPA functions through polymer encapsulation and adsorption mechanisms:

• Adsorbs onto shale and clay surfaces to suppress water penetration

• Encapsulates drill cuttings, preventing dispersion into fine solids

• Enhances mud cake integrity to limit filtrate invasion

• Modifies fluid rheology for improved hole cleaning and suspension

This multifunctional behavior allows PHPA to act simultaneously as a shale inhibitor, fluid loss reducer, viscosifier, and lubricant within a single drilling fluid system.

Performance Advantages

• Effective Shale Control
  Reduces swelling, sloughing, and erosion in reactive shale formations.

• Fluid Loss Reduction
  Improves filter cake quality and lowers permeability, protecting the reservoir.

• Improved Lubricity
  Decreases friction between drill string and borehole, reducing torque and drag.

• Stable Rheology
  Maintains consistent viscosity and suspension performance across wide pH and salinity ranges.

• High Compatibility
  Works well with KCl mud systems, PAC, CMC, biopolymers, and standard drilling fluid additives.

Typical Applications

• Oil & gas drilling fluids

• Water well drilling

• Directional and horizontal drilling

• KCl and brine-based mud systems

• Enhanced Oil Recovery (EOR) fluid systems

• Geological and coal drilling operations

PHPA is suitable for both freshwater and saline environments, including sodium and calcium brines.

Technical Features

• Polymer Type: Anionic PHPA copolymer

• Molecular Weight: Very high to ultra-high

• Degree of Hydrolysis: Medium to high

• Effective pH Range: 5–14

• Temperature Tolerance: Suitable for high-temperature drilling conditions

• Safety Profile: Non-toxic, non-flammable, non-explosive, chemically stable

Recommended Usage

PHPA is typically introduced into the drilling fluid system as a diluted polymer solution.

• Recommended Solution Concentration: 0.1–0.3%

• Optimal Make-up Water Temperature: 10–40 °C

• Mixing Method: Polymer eductor or dry powder feeding system

• Hydration Time: Approximately 60 minutes with continuous agitation

Proper dispersion ensures maximum polymer efficiency and stable drilling fluid performance.

Packaging & Supply Forms

• Powder: 25 kg kraft bags with inner PE liner

• Emulsion: 1000 kg IBC containers

• Storage Conditions: Cool, dry environment, protected from heat and direct sunlight

Multiple grades are available to meet different drilling depths, formations, and operational requirements.

Why BLUFLOC® PHPA from Bluwat Chemicals

• Professional manufacturer of drilling fluid polymers

• Consistent quality with controlled molecular weight distribution

• Broad product range covering powder and emulsion PHPA

• Technical support for formulation optimization and field application

• Reliable global supply for oilfield service companies and distributors

Get Technical Support

Contact Bluwat Chemicals to request TDS, MSDS, samples, or formulation guidance.
Our technical team will recommend the most suitable PHPA grade for your drilling fluid system and formation conditions.