Question 1

Powerful Thickening & Suspension

Accepted Answer

Landercoll® HEC offers balanced viscosity development for both freshwater and saturated saltwater systems, effectively suspending drill cuttings, weighting material (e.g., barite, hematite), and improving hole-cleaning efficiency.

Question 2

Outstanding Salt & Electrolyte Tolerance

Accepted Answer

Unlike many natural polymers, Landercoll® HEC maintains stable viscosity even in brine or high-electrolyte environments containing NaCl, KCl, CaCl₂, or CaBr₂.

Question 3

Improved Lubrication & Wear Reduction

Accepted Answer

By forming a lubricating film on the drill string and wellbore surface, Landercoll® HEC reduces friction, torque, and drag—lowering bit wear and enhancing rate of penetration (ROP).

Question 4

Fluid Loss & Filtration Control

Accepted Answer

HEC forms a uniform, low-permeability filter cake, minimizing water loss to the formation and preventing differential sticking.

Question 5

Reliable Under Extreme Conditions

Accepted Answer

Performs effectively in deep wells, high-density mud systems, and high-temperature formations.

Question 6

Environmentally Friendly

Accepted Answer

Landercoll® HEC is biodegradable and non-toxic, meeting environmental regulations for onshore and offshore drilling operations.

Question 7

All grades feature:

✓
                    High purity and substitution uniformity

✓
                    Superior salt/brine tolerance

✓
                    Rapid hydration without lumping

✓
                    Stable gel structure and controlled yield stress

✓
                    Low ash and insoluble content

🔧
            Customized formulations and OEM supply available upon project request.

/* Key Benefits in Drilling Operations Section */
.hec-key-benefits-drilling-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0f9ff 100%);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hec-key-benefits-drilling-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 20%, rgba(6, 182, 212, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 85% 80%, rgba(14, 165, 233, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.hec-key-benefits-drilling-section .content-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    position: relative;
    z-index: 1;
}

/* Section Header */
.hec-benefits-drilling-header {
    text-align: center;
    margin-bottom: 60px;
}

.hec-benefits-header-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    padding: 10px 24px;
    border-radius: 50px;
    margin-bottom: 24px;
    border: 2px solid rgba(6, 182, 212, 0.2);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.08);
}

.hec-benefits-badge-icon {
    font-size: 1.2rem;
}

.hec-benefits-badge-text {
    font-size: 0.9rem;
    font-weight: 700;
    color: #0891b2;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hec-benefits-drilling-title {
    font-size: 2.8rem;
    font-weight: 800;
    color: #0f172a;
    margin: 0 0 16px 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hec-benefits-drilling-subtitle {
    font-size: 1.15rem;
    color: #475569;
    margin: 0;
    line-height: 1.6;
    font-weight: 600;
}

/* Benefits Grid */
.hec-benefits-drilling-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.hec-benefit-drilling-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 32px 24px;
    background: white;
    border: 2px solid rgba(6, 182, 212, 0.12);
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    transition: all 0.3s ease;
}

.hec-benefit-drilling-card:hover {
    border-color: rgba(6, 182, 212, 0.25);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.12);
    transform: translateY(-6px);
}

.hec-benefit-icon-wrapper {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(240, 249, 255, 0.8), rgba(224, 242, 254, 0.8));
    border: 2px solid rgba(6, 182, 212, 0.2);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.hec-benefit-icon {
    font-size: 2rem;
}

.hec-benefit-text {
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.7;
    margin: 0;
}

/* Result Box */
.hec-benefits-result-box {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 28px 36px;
    background: white;
    border: 2px solid rgba(6, 182, 212, 0.15);
    border-left: 5px solid #0891b2;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.06);
    max-width: 1000px;
    margin: 0 auto;
}

.hec-benefits-result-arrow {
    font-size: 1.5rem;
    color: #0891b2;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

.hec-benefits-result-content {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
}

.hec-benefits-result-label {
    font-size: 1.1rem;
    font-weight: 800;
    color: #0891b2;
}

.hec-benefits-result-text {
    font-size: 1.05rem;
    color: #1e293b;
    line-height: 1.7;
    font-weight: 600;
}

/* Product Range Section */
.hec-product-range-section {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    padding: 100px 0;
    position: relative;
}

.hec-product-range-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 20%, rgba(6, 182, 212, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 85% 80%, rgba(14, 165, 233, 0.02) 0%, transparent 50%);
    pointer-events: none;
}

.hec-product-range-section .content-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    position: relative;
    z-index: 1;
}

/* Section Header */
.hec-product-range-header {
    text-align: center;
    margin-bottom: 60px;
}

.hec-product-range-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    padding: 10px 24px;
    border-radius: 50px;
    margin-bottom: 24px;
    border: 2px solid rgba(6, 182, 212, 0.2);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.08);
}

.hec-product-badge-icon {
    font-size: 1.2rem;
}

.hec-product-badge-text {
    font-size: 0.9rem;
    font-weight: 700;
    color: #0891b2;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hec-product-range-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #0f172a;
    margin: 0 0 16px 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hec-product-range-subtitle {
    font-size: 1.05rem;
    color: #475569;
    margin: 0;
    line-height: 1.7;
    max-width: 900px;
    margin: 0 auto;
}

/* Product Table */
.hec-product-table-wrapper {
    overflow-x: auto;
    margin-bottom: 50px;
}

.hec-product-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

.hec-product-table thead {
    background: linear-gradient(135deg, #0891b2, #06b6d4);
}

.hec-table-header {
    padding: 24px 28px;
    text-align: left;
    font-size: 1rem;
    font-weight: 800;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hec-table-subtext {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: none;
    margin-top: 4px;
    opacity: 0.9;
}

.hec-table-row {
    border-bottom: 2px solid rgba(6, 182, 212, 0.08);
    transition: all 0.3s ease;
}

.hec-table-row:last-child {
    border-bottom: none;
}

.hec-table-row:hover {
    background: rgba(240, 249, 255, 0.5);
}

.hec-table-cell {
    padding: 28px;
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.7;
}

.hec-grade-cell {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hec-grade-badge {
    display: inline-flex;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 800;
    width: fit-content;
}

.hec-grade-hv {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #92400e;
}

.hec-grade-mv {
    background: linear-gradient(135deg, #dbeafe, #bfdbfe);
    color: #1e3a8a;
}

.hec-grade-lv {
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
    color: #065f46;
}

.hec-grade-name {
    font-size: 0.85rem;
    color: #64748b;
    font-weight: 600;
}

.hec-viscosity-cell {
    font-weight: 700;
    color: #0891b2;
    font-size: 1rem;
}

.hec-application-cell {
    max-width: 500px;
}

/* Product Features Section */
.hec-product-features-section {
    margin-bottom: 40px;
}

.hec-product-features-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: #1e293b;
    margin: 0 0 24px 0;
    text-align: center;
}

.hec-product-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.hec-product-feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 24px;
    background: white;
    border: 2px solid rgba(6, 182, 212, 0.12);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(15, 23, 42, 0.04);
    transition: all 0.3s ease;
}

.hec-product-feature-item:hover {
    border-color: rgba(6, 182, 212, 0.25);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.1);
    transform: translateX(4px);
}

.hec-product-feature-icon {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #0891b2, #06b6d4);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
}

.hec-product-feature-text {
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.6;
    font-weight: 600;
}

/* Custom Note */
.hec-product-custom-note {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 32px;
    background: linear-gradient(135deg, rgba(240, 249, 255, 0.8), rgba(224, 242, 254, 0.8));
    border: 2px solid rgba(6, 182, 212, 0.2);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.08);
}

.hec-custom-note-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.hec-custom-note-text {
    font-size: 1rem;
    color: #1e293b;
    line-height: 1.7;
    margin: 0;
}

.hec-custom-note-text strong {
    color: #0891b2;
    font-weight: 700;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hec-key-benefits-drilling-section,
    .hec-product-range-section {
        padding: 80px 0;
    }
    
    .hec-key-benefits-drilling-section .content-container,
    .hec-product-range-section .content-container {
        padding: 0 40px;
    }
    
    .hec-benefits-drilling-title,
    .hec-product-range-title {
        font-size: 2.4rem;
    }
    
    .hec-benefits-drilling-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hec-product-features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hec-key-benefits-drilling-section,
    .hec-product-range-section {
        padding: 60px 0;
    }
    
    .hec-key-benefits-drilling-section .content-container,
    .hec-product-range-section .content-container {
        padding: 0 30px;
    }
    
    .hec-benefits-drilling-title,
    .hec-product-range-title {
        font-size: 2rem;
    }
    
    .hec-benefits-drilling-grid {
        grid-template-columns: 1fr;
    }
    
    .hec-table-header,
    .hec-table-cell {
        padding: 20px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hec-key-benefits-drilling-section,
    .hec-product-range-section {
        padding: 50px 0;
    }
    
    .hec-key-benefits-drilling-section .content-container,
    .hec-product-range-section .content-container {
        padding: 0 20px;
    }
    
    .hec-benefits-drilling-title,
    .hec-product-range-title {
        font-size: 1.6rem;
    }
    
    .hec-benefits-drilling-subtitle,
    .hec-product-range-subtitle {
        font-size: 1rem;
    }
    
    .hec-benefit-icon-wrapper {
        width: 60px;
        height: 60px;
    }
    
    .hec-benefit-icon {
        font-size: 1.8rem;
    }
    
    .hec-benefit-text {
        font-size: 0.9rem;
    }
    
    .hec-benefits-result-box {
        flex-direction: column;
        padding: 24px 28px;
    }
    
    .hec-benefits-result-arrow {
        font-size: 1.3rem;
    }
    
    .hec-benefits-result-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .hec-benefits-result-label {
        font-size: 1rem;
    }
    
    .hec-benefits-result-text {
        font-size: 0.95rem;
    }
    
    .hec-table-header,
    .hec-table-cell {
        padding: 16px;
        font-size: 0.85rem;
    }
    
    .hec-product-custom-note {
        flex-direction: column;
        text-align: center;
        padding: 20px 24px;
    }
    
    .hec-custom-note-icon {
        font-size: 1.8rem;
    }
    
    .hec-custom-note-text {
        font-size: 0.9rem;
    }
}

⚙️
                Functional Mechanism
            
            Functional Mechanism – How Landercoll® HEC Works in Drilling Fluids

(1)

Rheology & Thickening

Accepted Answer

HEC molecules hydrate and form a 3D polymer network that increases water viscosity and regulates shear-thinning behavior, ensuring ideal fluid flow at varying shear rates.

Question 8

Suspension & Stability

Accepted Answer

Viscous and elastic properties stabilize suspended solids (cuttings, weighting materials), allowing reliable hole cleaning and preventing settling even during flow interruptions.

Question 9

Fluid Loss Control

Accepted Answer

HEC efficiently seals permeable formations by forming a tight, slick film, minimizing filtrate invasion and preventing formation damage.

Question 10

Lubrication & Film Formation

Accepted Answer

A thin HEC film coats the wellbore and drilling tools, reducing drag and friction coefficients, while also improving corrosion protection under brine environments.

Question 11

Salt-Resistant Viscosity Retention

Accepted Answer

Landercoll® HEC retains up to 90% of its original viscosity even in saturated brines or multi-valent salt conditions, ensuring stable mud rheology where other polymers fail.

Question 12

Hydration Guide:

1
                        
                        Fill the mixing tank with clean water or brine.

2
                        
                        Begin gentle agitation.

3
                        
                        Slowly add Landercoll® HEC (avoid clumping) – typically up to 100 kg per 15 minutes depending on mud volume.

4
                        
                        Adjust pH to 8–9 using NaOH (avoid in CaCl₂ or CaBr₂ systems).

5
                        
                        Continue mixing until fully hydrated and uniform.

⚖️
                    Dosage Reference:

●
                            Freshwater drilling fluid:
                        
                        0.3–1.0 wt%

●
                            Saltwater/brine systems:
                        
                        0.6–1.5 wt%

●
                            Fluid-loss control systems:
                        
                        0.3–0.8 wt%

ℹ️
                    Note: Dosage should be optimized according to desired rheology and wellbore conditions.

📦
                Packaging & Storage
            
            Packaging & Storage

✓

Premium
                            Packaging

📦

Packaging

Accepted Answer

25 kg multi-layer paper bags with inner PE lining

Question 13

Storage

Accepted Answer

Store in a cool, dry, ventilated area

Question 14

Protection

Accepted Answer

Protect from moisture and direct sunlight

Question 15

Shelf Life

Accepted Answer

24 months (under recommended conditions)

Product Grade	Viscosity Range (2% Soln., mPa·s, 25°C)	Typical Applications
HEC-HV High Viscosity	60,000 – 100,000	Maximum thickening and suspension power for high-density and deep-well drilling muds
HEC-MV Medium Viscosity	25,000 – 60,000	Balanced rheology modifier for general drilling and completion fluids
HEC-LV Low Viscosity	10,000 – 25,000	Fluid-loss control agent and thinner additive for lightweight mud systems

Feature	Landercoll® HEC	XC Polymer (Xanthan Gum)	CMC (Carboxymethyl Cellulose)
Salt Tolerance	Excellent	Good	Poor
Temperature Resistance	High (≤150°C)	Moderate	Moderate
Lubrication	Excellent	Average	Average
Filtration Control	Excellent	Good	Good
Cost Efficiency	Very Good	Medium	Medium
Biodegradability	Yes	Yes	Yes

Landercoll® HEC for Oil Drilling Industry

High-Performance Hydroxyethyl Cellulose for Drilling Fluids and Oilfield Engineering

Why Choose Landercoll® HEC for Oil Drilling?

Powerful Thickening & Suspension

Outstanding Salt & Electrolyte Tolerance

Improved Lubrication & Wear Reduction

Fluid Loss & Filtration Control

Reliable Under Extreme Conditions

Environmentally Friendly

Key Benefits in Drilling Operations

Product Range – Landercoll® HEC Grades for Oilfield Applications

All grades feature:

Functional Mechanism – How Landercoll® HEC Works in Drilling Fluids

Rheology & Thickening

Suspension & Stability

Fluid Loss Control

Lubrication & Film Formation

Salt-Resistant Viscosity Retention

Performance Advantages vs. Other Polymers

Recommended Usage & Mixing Instructions

Hydration Guide:

Dosage Reference:

Packaging & Storage

Packaging

Storage

Protection

Shelf Life

Why Partner with LANDU – Your Reliable Oilfield Additive Expert

Request Free Samples & Technical Consultation

Frequently Asked Questions

How should HEC be added to the drilling fluid?

Is Landercoll® HEC suitable for both freshwater and saltwater systems?

Does HEC affect mud pH or chemistry?

What are common oilfield additives used with HEC?

Is HEC biodegradable?