What This Grade Is For
Building Painting Oil Drilling Grade Hydroxyethyl Cellulose is supplied by Yiyuantong Chemical as a viscosifier and fluid-loss control additive for drilling and completion fluids. Hydroxyethylcellulose (HEC) is a white or light yellow, odorless, non-toxic fibrous or powdered solid prepared by etherification reaction of alkaline cellulose and ethylene oxide (or chloroethanol), belonging to the non-ionic soluble cellulose ether class. Hydroxyethyl cellulose, referred to as HEC, is a non-ionic polymer compound with good solubility and stability.
Key Benefits
- Builds viscosity in fresh and salt water alike, so the fluid survives brine contamination
- Controls filtration loss by forming a thin film at the borehole wall
- Suspends weighting agents and cuttings, keeping the hole clean during circulation
- Dissolves cleanly in cold water, which shortens mixing time on the rig
- Held in stock: 800 tonnes of HEC are carried year round, and confirmed orders ship to the named port within 3 working days
Problems It Solves
- Fluid loss into permeable formations, which damages the pay zone and raises mud cost
- Viscosity that collapses once the mud picks up salt from the formation
- Poor cuttings carrying in deviated holes, so solids drop out in the annulus
- Completion brines that need clean, acid-soluble viscosity without solid residue
Application Scenarios
- Water-based drilling mud
- Completion and workover fluids
- Fracturing and packer fluids
- Cement slurry for well cementing
Who It Is For
- Drilling fluid service companies
- Oilfield chemical blenders
- Completion fluid suppliers
Technical Features
- Non-ionic backbone, so viscosity survives salt and hard water
- Cold-water soluble, no cooking step needed in the mixing room
- Supplied from 300 to 200000 mPa.s so the grade can be matched to the process
- Molar degree of substitution of 1.8 to 3.0 for biological stability and high transmittance
- Solvent process raises the degree of substitution by 30 to 35 percent against traditional routes
Technical Data And Packing
| Product Name | Hydroxyethyl Cellulose |
|---|---|
| CAS No | 9004-62-0 |
| EINECS | 618-387-5 |
| Chemical Formula | (C2H6O2) n |
| Appearance | White or Almost White, Odorless, Tasteless Solid Powder |
| Viscosity | 300-200000 mPa.s |
| Transmittance | ≥80.0 % |
| Molar Degree of Substitution | 1.8-3.0 |
| Water Content | ≤5.0 % |
| Ash Content (as sulfate) | ≤6.0 % |
| PH（1%，Solution） | 6.0～8.5 |
Packing is 25 kg per bag as standard: an inner polyethylene plastic film bag inside an outer composite plastic woven bag. Other pack sizes are arranged on request.
Raw Materials
- High alpha-cellulose refined cotton
- Wood pulp with high cellulose content
- Ethylene oxide
Manufacturing Process
- Alkalisation of refined cotton and wood pulp
- Etherification with ethylene oxide
- Acetone countercurrent washing
- Drying and milling
- 40 mesh screening
- Lot testing and packing
Quality Control
- Every lot is tested in our own laboratory against the customer specification before release
- Third-party verification is available through SGS, which we have worked with on export lots
- Certificate of analysis issued with each shipment; HPLC or NMR data supplied on request
- Acetone countercurrent washing removes process residues before drying and milling
How It Compares
| Xanthan gum | HEC is not fermented and holds up better against the enzyme attack that can thin biopolymer muds |
|---|---|
| Carboxymethyl cellulose | Being non-ionic, HEC tolerates high salinity and hardness that can knock down anionic CMC |
Use Guide
- Add through the hopper under circulation so the powder is wetted as it enters the system
- Allow full hydration before reading funnel viscosity, or the value will be low
- In heavy brines, allow longer hydration time than in fresh water
Customisation Options
- Viscosity grade selected against your process, from 300 to 200000 mPa.s
- Private label bags printed with your own label content
- Packing sizes arranged to suit your blending line
- Sample shipment by FEDEX, DHL or EMS before a production order
Certification And Inspection
- SGS third-party inspection available on export lots
- Certificate of analysis issued with every shipment
- HPLC or NMR data supplied on request
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Industry Pages
Building Painting Oil Drilling Grade Hydroxyethyl Cellulose FAQ
Does the viscosity hold up in saturated brine?
Yes. Hydroxyethyl cellulose is a non-ionic ether, so it is far less sensitive to salts and divalent ions than anionic thickeners.
What packing do you ship for rig-site use?
25 kg bags, inner polyethylene film with an outer composite woven bag. Larger orders ship palletised in containers.
Are you a manufacturer or a trading company?
We are a manufacturer and you are welcome to visit the plant. Our hydroxyethyl cellulose project runs at 5000 tonnes a year on an acetone countercurrent washing process.
What payment terms do you accept?
L/C, T/T, D/A, D/P, PayPal and Western Union. We have worked with China Export and Credit Insurance Corporation for many years.
How fast can you ship?
Stock items are despatched within 5 days of payment. If the grade is not in stock, production and despatch take 7 to 10 days from payment.
Get A Price For Building Painting Oil Drilling Grade Hydroxyethyl Cellulose
Send the quantity, the viscosity grade and the destination port. We reply with price, lead time and the lot analysis.