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HondoChem CMC LV (Low Viscosity Oil Drilling Grade CMC) is manufactured under a controlled viscosity and purity system to ensure consistent solubility in freshwater, seawater and high-salinity brines. With excellent fluid-loss control and stable rheology even under electrolyte contamination, our CMC LV meets API oilfield chemical requirements and is widely recognized by drilling contractors, mud service companies, and bulk chemical distributors. Industrial testing shows that CMC LV can reduce API fluid loss by 25–45% at low dosages, making it cost-effective for large-scale drilling and stimulation operations.

Main Application for CMC LV in Oil Drilling

1. CMC LV used in drilling fluid system
- As flow type regulator: Oil drilling grade CMC LV can improve the rheological properties of drilling fluid (such as reducing plastic viscosity).
- As viscosifier and filtrate reducer: Adding 0.5%-1.2% low-viscosity CMC-Na to water-based drilling fluid can significantly increase the liquid phase viscosity, also CMC LV could inhibit the dispersion of clay particles and reduce the infiltration of filtrate into the formation (as fluid loss additive CMC), so that could avoid well wall collapse, and protect the reservoir.
- As emulsifier stabilizer: CMC LV can assist in the formation of water-in-oil emulsion, enhances the lubricity of drilling fluid, reduces the friction resistance of the drill bit, and CMC LV is also suitable for directional well and horizontal well operations.
2. CMC LV used in fracturing fluid as auxiliary additives
- As disperse proppant: Low viscosity carboxymethyl cellulose can assist the main thickener (such as guar gum) to evenly disperse the proppant (such as quartz sand). Meantime, CMC LV could reduce the flow resistance of fracturing fluid in the pipeline through low viscosity characteristics.
- CMC LV enhances proppant placement efficiency by improving suspension stability during transport, particularly in slickwater or hybrid fracturing systems. Studies show that low-viscosity polymers can reduce friction pressure by up to 15%, helping operators reduce pumping energy cost.
3. CMC LV used in water injection oil recovery system
- Application mechanism: CMC LV for oil drilling could adjust the viscosity of injected water at low concentration, also could improve mobility ratio and expand the swept volume. Through adsorb on the rock surface, low viscosity carboxymethyl cellulose can reduce the permeability of the water phase and inhibit the "fingering" phenomenon.
- CMC LV Applicability: Secondary oil recovery in high permeability reservoirs, replace some synthetic polymers (such as HPAM) to reduce costs.
4. CMC LV used as cementing slurry conditioner
- Carboxymethyl cellulose low viscosity (CMC LV) could control the sedimentation stability of cement slurry and prevent solid phase sedimentation and stratification. Meantime CMC LV could also regulate the pumping performance of cement slurry to avoid construction difficulties which caused by excessive viscosity.
- CMC LV helps maintain uniform slurry density (reducing risk of channeling), improves slurry anti-free-water properties, and provides better bonding in casing-cement interfaces-critical for well integrity.
5. CMC LV used for special working conditions adaptation in oil drilling

With excellent salt resistance, CMC LV remains stable in brine or gypsum formations to prevent the deterioration of drilling fluid performance caused by electrolyte contamination, so CMC LV has a good performance for the high salt/calcium formation working conditions.

Because of its reliable filtration control in saturated saltwater systems, CMC LV is widely used in offshore rigs, high-salinity basins, and deep horizontal wells that require stable rheology with minimal viscosity gain. Technical data shows that CMC LV maintains over 85% viscosity retention even in high-calcium brines.

Furthermore, by adjusting the viscosity through the use of CMC LV, the sedimentation rate of solid phase particles is controlled to meet the cuttings carrying requirements of low-density systems and reduce downhole complexities.

Application Solutions & Case Examples

Our Service

These representative field cases demonstrate how Hondo Chem CMC LV delivers reliable fluid-loss control, improves operational stability, and maintains performance under challenging drilling and completion conditions.

High-Permeability Sandstone Field Case

Problem: Severe fluid loss and formation damage.
Solution: CMC LV at 0.6% + lignosulfonate; achieved API filtration reduction from 28 mL to 9–12 mL in lab simulation; field reported improved borehole stability.

Fracturing Proppant Suspension

Problem: Uneven proppant placement and high friction.
Solution: CMC LV (0.3–0.5%) combined with guar; improved proppant dispersion and reduced pump friction in pipeline tests.

Offshore Brine Contamination Control

Problem: Salt intrusion reduces polymer performance.
Solution: Salt-tolerant CMC LV grade retained >75% filtration control in 3% NaCl brine after 24 h aging.

Advantage

1. Economical

Compared with high-viscosity CMC-Na, CMC LV require less usage and have lower raw material costs.
To support cost efficiency with technical evidence, our CMC LV is manufactured with a controlled Degree of Substitution (DS ≥ 0.80, ±0.02), ensuring stable hydration and predictable performance, which helps minimize overdosing in field applications.

2. Environmental compatibility

Oil drilling used CMC LV is kind of biodegradable material, could meet the environmental requirements of offshore oil fields or ecologically sensitive areas.
The controlled DS and clean production process also contribute to better biodegradability and safer disposal performance, supporting sustainable drilling operations.

3. Compatibility flexibility

As fluid loss additives CMC, it can be compounded with a variety of oilfield chemicals (such as lignin sulfonate, polyacrylamide) to synergistically improve performance. Also can improve the working efficiency in oil drilling field.
Bench tests show that at 0.5–1.0% dosage in freshwater mud, API filtration loss is typically reduced by 35–60%, confirming compatibility and synergy across multi-component mud systems.
CMC LV also maintains >80% filtration-control capability after 120°C × 16 h aging in moderate salinity brines, further enhancing formulation flexibility.

4. Rapid responsiveness

With low-viscosity systems, CMC LV is easier to fine-tune performance by adjusting concentration or adding other additives to adapt to dynamic operating needs.
Thanks to its optimized DS and particle structure, CMC LV exhibits fast dissolution (<10 minutes to 95% hydration), enabling quick mud conditioning and faster operational adjustments.
Each production batch includes COA with DS, moisture, viscosity (600 r/min), API FL, pH and appearance, ensuring reliable field adjustments with complete traceability.

Quality Control System

Raw Material Inspection: Supplier qualification, incoming inspection (moisture, ash, α-cellulose), batch acceptance records.

In-Process Monitoring: Real-time control of alkalization and etherification; DS control ±0.02; automated drying and particle size screening.

Finished Product Testing: Viscosity (600 r/min), DS, API filtration loss, pH, moisture, appearance; all results documented in COA.

Retention & Traceability: Retain samples for 24 months; full batch traceability from raw material to shipping lot.

Pre-Shipment QA: Random sampling and re-testing; photos and inspection reports available upon customer request.

Third-Party Testing: SGS/BV or equivalent independent testing available for buyers requiring external verification.

Specification

Spec.	Standard
Appearance	White or yellowish powder
Starch	None
Moisture	≤10.0%
DS	≥0.80
Filtration loss (API)	≤10.0 mL
Purity	Technical or high purity
pH	7.0～10.0
Viscosity (600r/min reading)	≤90 mPa·s

Packing & Storage

Storage:

1. Carboxymethyl cellulose should store in a cool, dry, clean, ventilated environment. Temperature Max. 70℃, with relative humidity ≤80%.

Storage:

2. The CMC for pharmaceutical and food grade should not be put together with the toxic substance and harmful substance or substance with peculiar smell during transportation and storage.

Storage:

3. Since the date of production, a preservation period of sodium CMC should not exceed 4 years for the industrial product and 2 years for the CMC in pharmaceutical and food industry.

Storage:

4. The CMC should be prevented from water and package bag damaging during transportation.

Packing:

25kg kraft paper bag with PE inner, or as clients request.

product-1198-883

Why Choose Our CMC LV?

Manufacturing Experience: 10+ years specializing in cellulose ethers for oilfield chemicals.
Production Capacity: Stable annual capacity to meet bulk and repeat orders.
Documentation Ready: COA, MSDS, batch traceability, packing list and export documents available in English.
Technical Support: Mud recipe guidance, dosage optimization, and trial support for large projects.
Flexible Supply: Small sample orders to 500+ ton contracts; packaging and logistics tailored for export.

Summary

As a drilling fluid chemical, Low-viscosity CMC-Na (CMC LV) has become an ideal choice for high-permeability oil fields, shallow reservoirs and water flooding due to its rapid dissolution, low thickening effect and excellent filtration loss reduction ability. CMC LV's economic and environmental advantages have further promoted its popularity in low-viscosity scenarios. In practical applications, CMC LV is necessary to accurately select the type based on the formation conditions (temperature, mineralization), and give full play to its performance through compounding and process optimization. In the future, through functional modification and composite technology, the application scope of low-viscosity CMC-Na is expected to expand to more complex reservoir environments.