PHPA Supplier and Manufacturer

PHPA

Description


PHPA designed to provide cuttings encapsulation and shale stabilization. PHPA also performs as a viscosifier, friction reducer, flocculant, and provides some fluid loss control. PHPA encapsulator is a high molecular weight PHPA copolymer. It can be used in mud systems ranging from low solids to weighted muds, utilizing makeup waters from fresh to saltwater.

Characteristic and property

Physical Appearance................................White, granular powder
Specific Gravity........................................1.25 to 1.40
Bulk Density.............................................40 to 46 lb/ft3 (641 to 737 kg/m3)
Nature of charge........................................Anionic

(1).    Physical State : The Material shall be in the form of free. flowing powder, free from lumps and visible impurities.
(2).    Moisture Content at 105 ± 2 °C percent by mass : ....................................7.0 (Maximum) .
(3).    Ionic Character : .....................................................................................Anionic.
(4).    Relative Dispersibility of Bentonite Pellets in 0.2% (w/v) Polymer Solution at 60 ± 5°C with respect to Distilled Water :..................................................................................................................................175 (Maximum).
(5).    Degree of Hydrolysis, as Determined by Electrometric Titration, percent by mass : ................20.0 to 40.0.

(6).    Apparent Viscosity of 0.2% (w/v) Polymer Solution in Distilled Water using a Fann VG Meter or Equivalent, cP :
(i) At 24±2 °C : 9 (Minimum). 
(ii) After aging at 110 ± 2° C for 18 hours : Should not be less than 80% of the value obtaine at 6(i).


(7). Effect on 4 cP Bentonite Suspension at 0.2% (w/v) Polymer Concentration:
(i)    Apparent Viscosity at 24 ± 2 °C and pH 9.0, cP : 15 (Minimum).
(ii) Apparent Viscosity after aging at 110 ± 2 °C for 24 hours , cP : Should not be less than 80% of the value obtained at 7(i).


8. Calcium Tolerance Test:
(i)    Apparent Viscosity of 0.4% (w/v) Polymer in Distilled Water, cP : To be determined.
(ii) Apparent Viscosity of 0.4% (w/v) Polymer Solution in Distilled Water in presence of 100 ppm Ca++ , cP : Should not be less than 60% of the value obtained at 8(i).
Advantagess


• Excellent cuttings encapsulator to suppress cuttings dispersion.
Provides improved shale stabilization.
Powdered material with significantly lower toxicity than invert emulsion liquid PHPA polymers.
Improves the lubricity of most mud systems, particularly non dispersed muds ids in preventing balling on the bit, stabilizers and Bottom Hole Assembly (BHA) by coating and lubricating solids.
Can be used to viscosify clear water and low‐solids drilling fluids


Applications


PHPA provides cuttings encapsulation and improved wellbore stability. Typical concentrations are 0.25 to 2 lb/bbl 
(0.71 to 5.9 kg/m3). It is effective in salt muds such as KCl‐ or NaCl enhanced fluids, although slightly higher 
concentrations of PHPA may be required.
PHP Aadditive can be used in clear water, solids free drilling fluids. PHPA enhances solids removal by flocculating the undesired solids.
PHPA agent is well suited to LSND Type muds. In reduced‐bentonite muds, it extends bentonite to increase viscosity,
flocculates the drill solids for more efficient removal, encapsulates cuttings and improves wellbore stability.
The effectiveness of the polymer is reduced as the concentration of dispersants/deflocculants is increased.
Viscous PHPAadditive sweeps are effective for periodic hole cleaning. Sweeps may be prepared by mixing PHPA directly
in the active system at the suction pit or by premixing a high concentration in a separate pit and alowing the polymer to 
fully yield before being added to the active system.
When drilling top hole, a liquid solution of PHPA may be poured into the drill pipe during connections to help hole cleaning 
and maintaining a clean stabilizerand bit, improving ROP.


Limitations


 During the initial treatment of PHPA additive in a non dispersed mud system, severe flocculation may  occur causing high viscosity until all of the solids are coated
Subject to shear degradation of viscosity and may eventually lose its ability to viscosify, but cuttings encapsulation and shale stabilization are not affected
pH‐sensitive with an optimum pH range of 8.5 to 10.5. At pH levels above this range, hydrolysis may convert.
Acrylamide into acrylate and release ammonia (NH3)
Temperature stable to approximately 350°F (177°C) although the copolymer may begin to hydrolyze into polyacrylate
when exposed to prolonged temperatures above 275°F (135°C) and release ammonia (NH3)
Calcium‐sensitive and begins to precipitate when the calcium concentration exceeds 300 mg/L
Treat cement contamination to keep the calcium and pH as low as possible. Use sodium bicarbonate along with a pH 
reducing product, such as lignite or citric acid to treat cement contamination before additions of PHPA product are made. 


Toxicity and Handling


Bioassay information is available upon request. Handle as an industrial chemical, wearing protective equipment and observing the precautions as described on the Material Safety Data Sheet (MSDS).

 Packaging and Storage

 

PHPA is packaged in 50‐lb (22.7‐kg) multi wall, paper sacks. Store in a dry location away from sources of heat or ignition, and minimize dust.  

This material is supplied solely for informational purposes and UNIVERSAL makes no guarantees or warranties, either expressed or implied, with respect to the accuracy or use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale.
Quick contact for: phpa, phpa mud, phpa polymer

Our Products