Quick-Pick by System
| Function | Primary Additive | Backup / Synergist | Typical Dose | Application |
|---|---|---|---|---|
| Fluid Loss Control | PAC-R polyanionic cellulose | CMC LV / starch | PAC-R 2–6 kg/m³ | Water-based mud, all temperature ranges |
| Low-shear Rate Viscosity | Xanthan gum (XCD polymer) | PAC-R co-viscosifier | Xanthan 0.5–2 kg/m³ | Horizontal wells, displacement fluids |
| Filter Cake Formation | Treated bentonite | PAC-R fluid loss aid | Bentonite 30–60 kg/m³ | Surface and intermediate hole sections |
| Shale Inhibition | Potassium silicate | KCl + glycol synergist | Silicate 5–15 kg/m³ + KCl 30–80 kg/m³ | Shale gas / clay-rich formations |
| Wellbore Stability HPHT | Drilling mud lubricant + PAC-R | Cesium formate alternative for HPHT | Lubricant 5–15 L/m³ | Deep wells > 4000 m, > 150 °C bottom-hole |
| Weighting Up | Barite (BaSO₄) | Hematite for HP > 2.5 SG | Barite to target SG 1.2–2.4 | Pressure control, kick prevention |
| Fluid Loss HPHT | CMHEC carboxymethyl hydroxyethyl cellulose | Sulfonated lignite synergist | CMHEC 4–10 kg/m³ | Deep wells, > 150 °C bottom-hole temperature |
| Corrosion Control | Imidazoline corrosion inhibitor | Ammonium bisulfite oxygen scavenger | Imidazoline 100–300 mg/L + bisulfite 50–200 mg/L | All operations, particularly sour gas wells |
| Defoaming | Drilling fluid defoamer (silicone-free) | Polyglycol secondary defoamer | Defoamer 0.5–2 L/m³ | Gas-cut mud, salt-water muds |
| Dispersing | Drilling mud dispersant (lignite / lignosulfonate) | Synthetic polyacrylate alternative | Lignite 3–10 kg/m³ | High-density muds, sulfide-contaminated muds |
| Foaming (Underbalanced) | Drilling foaming agent (surfactant) | Anti-foam control during cementing | Foamer 5–15 L/m³ | Underbalanced drilling, geothermal wells |
| Loss Circulation Control | Cellulose fiber + treated bentonite | Walnut shell or fiber LCM | LCM 30–100 kg/m³ | Lost-circulation zones, fractured carbonates |
All Grades (by chemistry class)
Viscosifiers — CMC, PAC-R, Xanthan Biopolymer(6)
Primary rheology modifiers for water-based drilling fluid. CMC (carboxymethyl cellulose) and PAC-R (polyanionic cellulose regular) provide both viscosity and fluid-loss control. Xanthan gum is the low-shear-rate viscosifier essential for cuttings transport in horizontal wells and at low circulation rates.
water based resin chemicals
Carboxymethyl Cellulose (CMC)
CAS: 9004-32-4
Carboxymethyl Cellulose (CMC) for water-based coating, adhesive, and ink formulation, providing environmentally friendly performance with low VOC.
View Details →food beverage additives
Sodium Carboxymethylcellulose (CMC)
CAS: 9004-32-4
Sodium carboxymethylcellulose (CMC) is a water-soluble cellulose ether produced by reacting cellulose with monochloroacetic acid. Food-grade CMC (E466) provides viscosity, water retention, and texture modification in ice cream, beverages, baked goods, and dairy products. Degree of substitution (DS) ranges from 0.6 to 0.9 for food applications, with viscosity grades spanning 50–50,000 mPa·s (1% solution).
View Details →rheology control
Cellulose Thickener (CMC)
CAS: 9004-32-4
Sodium carboxymethyl cellulose (CMC) thickener and stabilizer used in waterborne coatings, paper processing, adhesives, and construction chemicals. It provides pseudoplastic rheology, water retention, and colloidal stability in aqueous systems. Food-grade and industrial grades are available with a range of viscosity levels and degrees of substitution.
View Details →oilfield chemicals
Polyanionic Cellulose Regular (PAC-R) for Drilling Fluids
CAS: 9004-32-4
PAC-R (Polyanionic Cellulose, Regular grade) is a cellulose-derived fluid loss control agent and viscosifier used in water-based drilling fluids. It effectively reduces filtration loss and builds moderate viscosity in both freshwater and salt-saturated (NaCl, KCl, CaCl₂) mud systems. PAC-R forms a thin, low-permeability filter cake on the borehole wall to prevent formation fluid influx and protect productive formations.
View Details →oilfield production specialty
Biopolymer Xanthan Drilling
CAS: 11138-66-2
Biopolymer Xanthan Drilling is a specialty chemical for upstream oil and gas production operations. Provides effective treatment for scale, corrosion, emulsion, and flow assurance challenges in wellbore and pipeline systems.
View Details →oilfield chemicals
Xanthan Gum XCD Polymer for Drilling Fluids
CAS: 11138-66-2
XCD (Xanthan Gum) polymer is a fermentation-derived polysaccharide biopolymer used as a viscosifier and suspension agent in water-based drilling fluids. It provides excellent low-shear-rate viscosity and yield point for efficient drill cuttings suspension and transport, while maintaining low circulating viscosity for good pump efficiency. XCD polymer is salt-tolerant and effective in both fresh water and saturated brine mud systems.
View Details →Fluid Loss Additives(3)
Reduce fluid leak-off into permeable formations by depositing a thin, low-permeability filter cake. Starch (modified for thermal stability) is the cost-effective baseline; CMHEC (carboxymethyl hydroxyethyl cellulose) is the HPHT (>150°C) workhorse; CMC LV supplements PAC-R in shallower wells.
oilfield production specialty
Fluid Loss Additive Starch
CAS: 9005-84-9
Fluid Loss Additive Starch is a specialty chemical for upstream oil and gas production operations. Provides effective treatment for scale, corrosion, emulsion, and flow assurance challenges in wellbore and pipeline systems.
View Details →oilfield chemicals
Carboxymethyl Hydroxyethyl Cellulose (CMHEC) Fluid Loss Additive
CMHEC (Carboxymethyl Hydroxyethyl Cellulose) is a dual-substituted cellulose ether used as a fluid loss control agent in cement slurries, drilling fluids, and completion fluids. It provides excellent filtration control under both static and dynamic conditions and at temperatures up to 150°C. CMHEC is particularly valued for its ability to provide simultaneous fluid loss control and mild viscosification in cement slurries without excessive retardation.
View Details →new materials
Carboxymethyl Nanocellulose
CAS: 9004-32-4
Carboxymethyl Nanocellulose representing advanced nanomaterials and emerging functional materials for next-generation applications in energy, electronics, and coatings.
View Details →Shale Inhibitors(2)
Prevent clay-rich shale formations from hydrating and sloughing into the wellbore. Potassium silicate creates a glass-like film on shale surfaces; KCl provides ionic inhibition; glycol-based inhibitors offer high-performance for water-sensitive shales (Marcellus, Eagle Ford, Bakken).
oilfield chemicals
Potassium Silicate Shale Inhibitor for Drilling Fluids
Potassium silicate shale inhibitor is an inorganic polymer used in water-based drilling fluids to suppress clay swelling, shale hydration, and wellbore instability in reactive shale formations. The silicate anion plugs microporosity in shale, while the potassium cation provides additional ion exchange inhibition of clay minerals. It provides exceptional borehole stability in highly reactive clay-rich formations, reducing washouts and pack-offs.
View Details →oilfield chemicals
Treated Bentonite for Drilling Fluids
CAS: 1302-78-9
Treated bentonite is a sodium montmorillonite clay mineral that serves as the primary viscosifier and filtration control agent in water-based drilling fluid systems. API-grade treated bentonite hydrates readily in freshwater to build yield point and gel strength for cuttings suspension, with a yield of ≥91 bbl/ton. It forms a flexible, low-permeability filter cake on the borehole wall during drilling operations.
View Details →Corrosion Inhibitors, Bactericides, Defoamers, Dispersants(5)
Mud chemistry maintenance additives — imidazoline corrosion inhibitors for sour-gas (H₂S) wells, ammonium bisulfite oxygen scavengers, silicone-free defoamers for gas-cut control, lignite/lignosulfonate dispersants to manage high-density muds and salt contamination.
oilfield chemicals
Imidazoline Corrosion Inhibitor for Oil Wells
CAS: 27136-73-8
Imidazoline-based corrosion inhibitor is a nitrogen-containing heterocyclic compound widely used to protect steel surfaces in oil and gas production against CO₂, H₂S, and organic acid corrosion. It forms a protective adsorbed film on metal surfaces, achieving corrosion protection efficiency above 95% in harsh sour and sweet service conditions. Suitable for use in production tubing, pipelines, and surface facilities.
View Details →oilfield chemicals
Ammonium Bisulfite Oxygen Scavenger for Drilling Fluids
CAS: 10192-30-0
Ammonium bisulfite is a fast-reacting oxygen scavenger used to remove dissolved oxygen from drilling fluids, completion fluids, and workover brines, preventing oxygen-induced corrosion of drill string, casing, and downhole equipment. It reacts stoichiometrically with dissolved O₂ to form ammonium sulfate, achieving oxygen levels below 20 ppb within minutes. Supplied as a concentrated aqueous solution for easy injection.
View Details →oilfield production specialty
Defoamer Drilling Fluid
CAS: 63148-62-9
Defoamer Drilling Fluid is a specialty chemical for upstream oil and gas production operations. Provides effective treatment for scale, corrosion, emulsion, and flow assurance challenges in wellbore and pipeline systems.
View Details →oilfield production specialty
Foaming Agent Drilling
CAS: 68439-57-6
Foaming Agent Drilling is a specialty chemical for upstream oil and gas production operations. Provides effective treatment for scale, corrosion, emulsion, and flow assurance challenges in wellbore and pipeline systems.
View Details →oilfield production specialty
Dispersant Drilling Mud
CAS: 25213-24-5
Dispersant Drilling Mud is a specialty chemical for upstream oil and gas production operations. Provides effective treatment for scale, corrosion, emulsion, and flow assurance challenges in wellbore and pipeline systems.
View Details →Weighting, Lubricants & Carrier(5)
Bulk-volume mud components — barite (BaSO₄ specific gravity 4.2) and hematite for density control to 2.4 SG, treated bentonite as the base clay for water-based mud, drilling mud lubricant to reduce torque and drag in deviated and horizontal wells, CMHEC and CMC variants used as suspending agents and viscosity modifiers in associated services.
oilfield chemicals
Barite Weighting Agent for Drilling Fluids
CAS: 13462-86-7
API-grade barite (barium sulfate) is the industry-standard weighting agent for increasing the density of water-based and oil-based drilling fluids to control formation pressure and prevent wellbore kicks. With a specific gravity of 4.2 g/cm³, it allows mud density to be raised up to 2.65 g/cm³ (22.0 ppg) without excessive solids loading. API-grade barite meets the stringent specifications of API 13A for soluble Ba, Cd, Hg, and Pb content.
View Details →oilfield chemicals
Drilling Mud Lubricant for Drill Bit and String
Drilling mud lubricant is a synthetic or fatty acid ester-based additive that reduces torque and drag on the drill string, BHA, and drill bit during directional and horizontal drilling operations. It reduces the coefficient of friction by up to 70% in water-based mud systems and is effective in both clay-inhibited and salt-saturated drilling fluids. The product helps extend bit life, reduce stuck pipe incidents, and improve drilling efficiency in extended-reach wells.
View Details →detergent raw materials
CMC Anti-redeposition Agent
CAS: 9004-32-4
CMC Anti-redeposition Agent for detergent and cleaning product formulation, providing effective cleaning, foaming, or building performance.
View Details →agricultural crop chemicals
Carboxymethylcellulose (CMC) Suspending Agent
CAS: 9004-32-4
Carboxymethylcellulose sodium (CMC) is a water-soluble cellulose ether used as a thickener, suspending agent, and stabilizer in aqueous agrochemical formulations including SC suspensions, WG wettable granules, and seed treatment slurries. It imparts pseudo-plastic viscosity to prevent sedimentation and caking, while improving spray application uniformity. CMC is compatible with most pesticide active ingredients and is accepted in organic formulation systems.
View Details →battery energy storage chemicals
Carboxymethyl Cellulose (CMC) Anode Binder/Thickener
CAS: 9004-32-4
Battery-grade CMC sodium salt is used in combination with SBR as a thickener and binder for graphite and silicon-graphite anode aqueous slurries. It controls slurry rheology for uniform coating, and its carboxylate groups bond covalently to silicon particles during drying, helping to buffer volumetric expansion.
View Details →Imported Brand → China Equivalent
Equivalents are indicative; verify against TDS for project-critical applications.
| International Brand Grade | China Equivalent | Major Chinese Producers |
|---|---|---|
| Halliburton Polypac (PAC-R) | PAC-R Polyanionic Cellulose Regular | 山东赫达, 河北邯郸, 河南鸿光化工 |
| Drilcam HV PAC | PAC-HV high-viscosity grade | 山东赫达, 河南鸿光化工 |
| Drispac (CMC HV) | Sodium CMC drilling grade | 山东赫达, 河北鑫硕 |
| Kelco / CP Kelco XCD Xanthan | XCD biopolymer drilling grade | 山东中轩生物 (Zhongxuan), 山东富田 (Fufeng) |
| M-I SWACO POLY-PLUS RD (PHPA) | PHPA partially hydrolyzed polyacrylamide | 山东诺尔生物 (Norit), 安徽巨成 |
| Baroid AQUAGEL (treated bentonite) | API treated bentonite mud powder | 新疆托克逊, 内蒙古鄂尔多斯, 浙江安吉 |
| Baroid BARACOR 700 (imidazoline) | Imidazoline corrosion inhibitor for sour gas | 山东恒昇化工, 河南乾兴 |
| Halliburton BRINEDRIL-N (silicate) | Potassium silicate shale inhibitor | 山东聚成, 浙江开化合成 |
| M-I SWACO M-I X-II (lubricant) | Drilling mud lubricant high-performance | 山东赫达, 河南鸿光化工 |
| Magcobar / Halliburton barite | API SG 4.2 barite drilling grade | 贵州桐梓, 湖南浏阳, 江西黎川 |
| M-I SWACO DUO-VIS (xanthan + cellulose) | Xanthan + CMC dual-viscosifier blend | 山东中轩, 山东赫达 |
Frequently Asked Questions
▶CMC vs PAC-R — which polyanionic cellulose should I specify?
PAC-R is the modern standard — higher purity, better thermal stability (effective to 150°C), and faster fluid-loss control than commodity CMC. Use CMC LV/HV for cost-sensitive shallower wells (<3000 m) where temperature stays below 120°C; specify PAC-R for deep wells, HPHT, and high-density brines.
CMC vs PAC-R — which polyanionic cellulose should I specify?
PAC-R is the modern standard — higher purity, better thermal stability (effective to 150°C), and faster fluid-loss control than commodity CMC. Use CMC LV/HV for cost-sensitive shallower wells (<3000 m) where temperature stays below 120°C; specify PAC-R for deep wells, HPHT, and high-density brines.
▶When does xanthan gum beat CMC/PAC-R?
Xanthan gum provides exceptional low-shear-rate viscosity — at 5 sec⁻¹ shear rate (relevant to cuttings settling in the annulus), xanthan delivers 50–80 cP while CMC/PAC-R deliver only 10–20 cP. Essential for horizontal wells, low circulation rates, and underbalanced drilling.
When does xanthan gum beat CMC/PAC-R?
Xanthan gum provides exceptional low-shear-rate viscosity — at 5 sec⁻¹ shear rate (relevant to cuttings settling in the annulus), xanthan delivers 50–80 cP while CMC/PAC-R deliver only 10–20 cP. Essential for horizontal wells, low circulation rates, and underbalanced drilling.
▶What is API Spec 13A and does my mud chemistry need it?
API Spec 13A is the American Petroleum Institute standard for drilling-fluid materials (barite, hematite, bentonite, PAC-R, CMC, etc.) — specifies physical and chemical performance benchmarks. Required for North American oil & gas operations, recommended for international major operators (Shell, BP, ExxonMobil, Total).
What is API Spec 13A and does my mud chemistry need it?
API Spec 13A is the American Petroleum Institute standard for drilling-fluid materials (barite, hematite, bentonite, PAC-R, CMC, etc.) — specifies physical and chemical performance benchmarks. Required for North American oil & gas operations, recommended for international major operators (Shell, BP, ExxonMobil, Total).
▶How do I select fluid-loss additive for HPHT (>150°C) wells?
For temperatures 120–150°C, PAC-R alone suffices. Above 150°C, switch to CMHEC (carboxymethyl hydroxyethyl cellulose) combined with sulfonated lignite or sulfonated asphalt as backup. For 175°C+ (deep gas wells), specialty synthetic AMPS/AM copolymers replace cellulosic chemistry entirely.
How do I select fluid-loss additive for HPHT (>150°C) wells?
For temperatures 120–150°C, PAC-R alone suffices. Above 150°C, switch to CMHEC (carboxymethyl hydroxyethyl cellulose) combined with sulfonated lignite or sulfonated asphalt as backup. For 175°C+ (deep gas wells), specialty synthetic AMPS/AM copolymers replace cellulosic chemistry entirely.
▶Do you supply oil-based and synthetic-based mud (OBM/SBM) additives?
Chemzip's drilling-fluid additive line is primarily water-based mud (WBM) chemistry — CMC, PAC-R, xanthan, treated bentonite. For OBM/SBM-specific chemistry (organophilic clay, primary/secondary emulsifiers, oil-wetting agents), we can source through partner manufacturers on inquiry — these require API 13A Category B/C certification and have separate technical specifications.
Do you supply oil-based and synthetic-based mud (OBM/SBM) additives?
Chemzip's drilling-fluid additive line is primarily water-based mud (WBM) chemistry — CMC, PAC-R, xanthan, treated bentonite. For OBM/SBM-specific chemistry (organophilic clay, primary/secondary emulsifiers, oil-wetting agents), we can source through partner manufacturers on inquiry — these require API 13A Category B/C certification and have separate technical specifications.
▶What's the typical mud cost as % of total drilling cost?
Land wells: 5–15% (commodity WBM); shale gas / unconventional: 10–25% (high-tech WBM/SBM); offshore shallow water: 8–15% (SBM); offshore deepwater: 15–25% (SBM/OBM); HPHT exploration: 20–35% (specialty chemistry).
What's the typical mud cost as % of total drilling cost?
Land wells: 5–15% (commodity WBM); shale gas / unconventional: 10–25% (high-tech WBM/SBM); offshore shallow water: 8–15% (SBM); offshore deepwater: 15–25% (SBM/OBM); HPHT exploration: 20–35% (specialty chemistry).
▶How do Chinese drilling-additive prices compare to Halliburton, Baroid, M-I SWACO?
Commodity additives (CMC, PAC-R, treated bentonite, barite) from Chinese producers are typically 35–55% lower CIF than equivalent service-company grades. Specialty additives (HPHT, shale inhibitors, primary emulsifiers) narrow the gap to 15–30% because Chinese R&D is still catching up.
How do Chinese drilling-additive prices compare to Halliburton, Baroid, M-I SWACO?
Commodity additives (CMC, PAC-R, treated bentonite, barite) from Chinese producers are typically 35–55% lower CIF than equivalent service-company grades. Specialty additives (HPHT, shale inhibitors, primary emulsifiers) narrow the gap to 15–30% because Chinese R&D is still catching up.
▶What documents and certifications are available?
COA, SDS/MSDS, TDS standard on every order. API Spec 13A certificates for certified products (PAC-R, CMC, barite, bentonite); ISO 9001 for the manufacturing facility; REACH / RoHS / SVHC for European customers; HSE-MSDS sheets compliant to UK / Norway offshore operator requirements.
What documents and certifications are available?
COA, SDS/MSDS, TDS standard on every order. API Spec 13A certificates for certified products (PAC-R, CMC, barite, bentonite); ISO 9001 for the manufacturing facility; REACH / RoHS / SVHC for European customers; HSE-MSDS sheets compliant to UK / Norway offshore operator requirements.
▶What MOQ and packaging?
Starter samples 5–10 kg; standard commercial MOQ is 1 metric ton for polymer additives (CMC, PAC-R, xanthan); 25 metric tons for barite and bentonite. Packaging: 25 kg multi-ply paper bag with PE liner, 1 t jumbo bag, 25 t bulk container.
What MOQ and packaging?
Starter samples 5–10 kg; standard commercial MOQ is 1 metric ton for polymer additives (CMC, PAC-R, xanthan); 25 metric tons for barite and bentonite. Packaging: 25 kg multi-ply paper bag with PE liner, 1 t jumbo bag, 25 t bulk container.
▶Free samples and technical advisor consultation?
Yes — free 5–10 kg samples on company letterhead inquiry, DHL Express dispatch. Drilling-fluid technical advisor available by email/WhatsApp for additive-package selection, troubleshooting (lost circulation, kick prevention, shale instability), and on-site mud-engineering referrals.
Free samples and technical advisor consultation?
Yes — free 5–10 kg samples on company letterhead inquiry, DHL Express dispatch. Drilling-fluid technical advisor available by email/WhatsApp for additive-package selection, troubleshooting (lost circulation, kick prevention, shale instability), and on-site mud-engineering referrals.