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- Greenbase™ HEC Polymer
Greenbase™ HEC Polymer

Drilling Specialties’ Greenbase™ HEC Polymer is a pure, high-viscosity hydroxyethyl cellulose polymer, suspended in a glycol ether. The HEC used in this product is carefully chosen to provide the highest solution viscosities possible with this type of polymer. This HEC suspension is uniquely stable, easily handled and useful in both oilfield and non-oilfield applications.

Suspension Properties

Drilling Specialties’ 37% active Greenbase™ HEC Polymer will not experience the separation that is evident in other suspension products. It is not subject to settling or fluid separation under normal storage or transport conditions. Starting with an environmentally friendly fluid and utilizing our unique suspension technology, we eliminate settling of the pure HEC particles while the product remains fully pourable. The long-term stability of the suspension provides for consistent, reliable product properties at your field locations any place in the world.

Packaging

The Greenbase™ HEC Polymer is generally packaged in disposable pails, containing a net weight of 44 lb of product (16 lb of HEC). Other packaging options are available.

Packaging the Greenbase™ HEC Polymer as a liquid suspension allows for accurate metering and provides complete dispersion of the particles in your treating fluids before hydration begins. This quality eliminates problems of polymer lumping and incomplete viscosity development, even when facing adverse field mixing conditions.

Advantages

  • Meets oil and grease test requirements for the Gulf of Mexico
  • Does not form a sheen
  • Easy to handle and mixes well in low-shear environments
  • Works well at any salinity
  • Increases the carrying capacity of the treating fluid
  • May be poured down drill pipe
  • No “fisheyes”
  • Extremely stable suspension provides reliable properties
  • Highly effective thickener

Technical Information

Activity 37% by weight
3.2 lb/gal 
Flash Point 220°F (104°C)
Pour Point -35şF
Density 8.7 lb/gal
Color cream

Applications

Applications Material Needed
To provide carrying capacity in fracturing fluids 0.25 to 1.0 gal/bbl
To thicken the carrying fluid in gravel packing 0.5 to 1.0 gal/bbl
As a thickener for workover and completion fluids   0.25 to 1.0 gal/bbl
As a viscous sweep in horizontal drilling  0.5 to 1.0 gal/bbl
Fluid-loss control 0.5 to 1.0 gal/bbl

Special Uses

  1. As a viscosifier in saturated NaCl, KCl, and CaCl2 brines to 250° F.
  2. As a thickener for CaBr2 to 150° F.
  3. As a filtrate reducer and bore-hole stabilizer in saturated NaCl, KCl, and CaCl2 brines to 300° F. 
Performance

Environmental Information

Using EPA Method 1664, for a 2 lb/bblHEC concentration in seawater, the Greenbase™ HEC Polymer showed less than 5 ppm of total extractables. There was no evidence of sheening.

A 96 hour range finder test, using Mysid shrimp (Mysidopsis bahia), resulted in an LC50 of over 722,000 ppm for the Greenbase™ HEC Polymer.

Before using this product, the user is advised and cautioned to make its own determination and assessment of the safety and suitability of the product for the specific use in question and is further advised against relying on the information contained herein as it may relate to any specific use or application. It is the ultimate responsibility of the user to ensure that the product is suited and the information is applicable to the user’s specific application. Drilling Specialties Company does not make, and expressly disclaims, all warranties, including warranties of merchantability or fitness for a particular purpose, regardless of whether oral or written, express or implied, or allegedly arising from any usage of any trade or from any course of dealing in connection with the use of the information contained herein or the product itself. The user expressly assumes all risk and liability, whether based in contract, tort or otherwise, in connection with the use of the information contained herein or the product itself. Further, information contained herein is given without reference to any intellectual property issues, as well as federal, state or local laws which may be encountered in the use thereof. Such questions should be investigated by the user.