Explore our core product lines optimized for enhanced oil recovery (EOR), drilling fluid thickening, industrial sludge dewatering, and specialized water treatment.
Established in 2011 within the strategic hub of the Qingdao Free Trade Zone, China, Qingdao Oubo Chemical Co., Ltd. (O'Brien) has solidified its position as a global leader in high-molecular weight synthetic polymer manufacturing. Operating with an annual production capacity exceeding 50,000 Metric Tons, Oubo Chemical combines advanced bio-catalytic monomer synthesis with state-of-the-art continuous polymerization technology.
Our enterprise ISO9001:2008 certified Quality Control system enforces rigorous 3-stage analytical testing across all production runs. Over the past decade, Oubo has sustained an annual growth rate of 10%, serving Tier-1 global petroleum exploration operators, oilfield service contractors, municipal wastewater facilities, and international paper mills.
Anionic Polyacrylamide (APAM) utilized in upstream petroleum applications is a water-soluble linear polymer synthesized via the copolymerization of acrylamide (AM) and acrylic acid / sodium acrylate (AAN). The molecular weight of oilfield-grade APAM ranges from 5 Million to 30 Million Daltons, with degrees of hydrolysis customized between 10% and 40% depending on specific reservoir thermodynamics and water chemistry.
In Tertiary Oil Recovery (EOR), high molecular weight APAM increases the viscosity of injected water, significantly reducing the mobility ratio ($M = \lambda_w / \lambda_o$). By dampening viscous fingering through porous sandstone and carbonate formations, APAM expands macroscopic sweep efficiency and micro-displacement effectiveness.
In drilling fluid formulations, APAM acts as a primary shale encapsulant and loss-control agent. Negative carboxylate ions ($-COO^-$) adsorb onto positively charged clay edge sites, preventing hydration, swelling, and bit balling, while maintaining pseudoplastic shear-thinning behavior under high drill string shear stress.
During hydraulic fracturing operations, partially hydrolyzed polyacrylamide (HPAM) acts as an ultra-efficient friction reducer. By stretching out linear polymer chains under turbulent pipe flow, it dampens turbulent eddies, reducing pumping pressure losses by up to 75-85% at high injection rates.
| APAM Grade | Molecular Weight (Million) | Degree of Hydrolysis (%) | Solid Content (%) | Primary Oilfield Application |
|---|---|---|---|---|
| Oubo EOR-Ultra | 22.0 - 28.0 | 20% - 30% | ≥ 89% | Enhanced Oil Recovery (High-Viscosity Polymer Flooding) |
| Oubo Mud-Encaps | 12.0 - 16.0 | 15% - 25% | ≥ 88% | Drilling Fluids, Shale Encapsulation & Fluid Loss Control |
| Oubo Frac-FR | 15.0 - 20.0 | 10% - 20% | ≥ 90% | Hydraulic Fracturing Slickwater Friction Reducer |
| Oubo Water-Treat | 8.0 - 14.0 | 30% - 40% | ≥ 88% | Produced Water Clarification & Oily Sludge Dewatering |
Oubo Chemical manufactures specialized polyacrylamide chemical suites engineered for severe bottom-hole temperatures and hypersaline geological formations.
Our EOR series polymers are tailored for profile modification and deep plug diversion. By selectively blocking high-permeability thief zones, APAM redirects subsequent water injection into un-swept low-permeability zones, boosting reservoir yield by 10% to 25%.
APAM functions as an essential rheology modifier in water-based drilling muds (WBM). It cushions drill strings, enhances cuttings transport performance in directional drilling, and establishes a low-permeability filter cake along wellbore walls.
In oil sands extraction and produced water management, APAM accelerates fine mineral solids sedimentation, separates emulsified oil droplets from produced water, and enables zero-liquid-discharge (ZLD) water recycling loops.
As global energy requirements shift toward mature reservoir optimization and unconventional shale plays, conventional polymers face limitations under Extreme High-Temperature High-Salinity (HTHP) conditions. Oubo Chemical’s R&D initiative is driving four key innovations:
Integrating 2-Acrylamido-2-methylpropane sulfonic acid (ATBS) and N-Vinylpyrrolidone (NVP) into the polyacrylamide backbone enhances resistance to thermal hydrolysis up to 120°C and prevents precipitation in high-divalent salinity environments ($Ca^{2+}, Mg^{2+} > 5,000 ppm$).
Incorporating functionalized silica nano-particles into polymer matrices forms dynamic supramolecular networks. These intelligent hydrogels shear-thin during pumping and instantly recover viscosity deep inside fractures for superior proppant placement.
Transitioning to 3rd generation enzymatic bio-catalytic synthesis eliminates nitrilotripropanamide impurities, reduces greenhouse gas emissions during monomer synthesis by 38%, and provides traceable Scope 1-3 carbon tracking for global energy majors.
Why leading international oilfield services procurement teams choose Qingdao Oubo Chemical Co., Ltd. as their strategic supply partner:
Located in proximity to major petrochemical refining clusters (SINOPEC, Eni supplier networks), Oubo secures continuous feedstock access to ultra-pure Acrylamide monomer, guaranteeing uncompromised molecular weight consistency.
Our digitalized smart factory deploys online ultrasonic viscoelasticity sensors and automated dosing systems. Every continuous synthesis batch undergoes real-time feedback regulation to eliminate batch-to-batch variance.
Our facility within the Qingdao Free Trade Zone (FTZ) offers direct sea-rail intermodal transport advantages. Orders are rapidly processed, loaded into moisture-sealed containers, and dispatched globally within short lead times.
Qingdao OUBO Chemical Co., Ltd. is a premier global manufacturer of Polyacrylamide. We utilize advanced bio-catalytic methods to produce high-purity polyacrylamide, backed by patented processes and annual R&D investment of over €200 million for long-term technological accumulation.
Global supply chain resilience. All key chemical raw materials are audited from world-tier suppliers like SINOPEC and Eni. Production lines operate under full automation with ISO9001 compliance. Every batch undergoes 3-stage QA verification before release.
Specializing in PAM chemistry for over a decade, we offer superior technical quality at competitive pricing. Our dedicated chemical engineering teams participate across pre-sales consulting, field testing, and post-sales optimization to ensure correct product selection.
Our field engineers provide tailor-made laboratory dissolution trials, core flooding simulations, and shear stability evaluations to match precise customer fluid chemistry and site conditions.
Beyond upstream oil and gas, Oubo Chemical supplies optimized water-soluble polymers for key industrial sectors across the globe:
Serves as a primary flocculating agent in solid-liquid separation, sedimentation, clarification, and belt/centrifuge sludge dewatering across municipal sewage, leather, citric acid, and pharmaceutical effluents.
Acts as retention aid, drainage promoter, wet/dry strength agent, and anionic trash catcher. Enhances paper physical toughness while reducing fiber loss in white water loops.
Accelerates solid-liquid separation in coal washing, tailings thickening, and hydrometallurgical extraction for gold, silver, iron, copper, and nickel ores.
Optimizes clarification and flotation in raw sugarcane/beet juice processing, and serves as an efficient warp textile sizing and fabric finishing auxiliary.
To ensure product stability against moisture ingress and atmospheric degradation during long-distance oceanic transport, Oubo Chemical offers multi-layer heavy-duty packaging configurations:
25kg multi-wall paper-plastic composite bag with inner PE liner for OEM distribution.
Standard brand export packaging with batch tracing and specification printing.
750kg / 1000kg FIBC jumbo bags designed for high-volume automated field dissolvers.
ISPM-15 compliant wooden/plastic pallets shrink-wrapped for containerized ocean shipping.
APAM dry powder must be dispersed slowly and evenly into a vortex of clean water using an automated dry powder feeder. Recommended dissolution concentration is 0.1% - 0.3% (w/v). Mixing speed should be maintained between 200 - 400 RPM to avoid mechanical shear degradation of long polymer chains. Complete dissolution typically requires 45 to 60 minutes under ambient temperatures.
High concentrations of monovalent ($Na^+, K^+$) and divalent cations ($Ca^{2+}, Mg^{2+}$) screen the negative charges along the APAM carboxylate backbone. This charge screening causes the expanded polymer coil to collapse, decreasing hydrodynamic radius and solution viscosity. For high-salinity reservoirs (>30,000 ppm TDS), Oubo recommends ATBS-modified or amphoteric polymer grades specifically engineered to resist salt-induced viscosity loss.
When stored in its original unopened moisture-proof packaging in a dry, cool, and well-ventilated warehouse under 35°C, Oubo APAM powder has a shelf life of 24 months. Aqueous polymer solutions should be utilized within 24–48 hours, as diluted liquid polymers undergo natural bio-degradation and viscosity decay over extended periods.
Every batch manufactured at our Qingdao facility undergoes strict 3-stage QC evaluation: continuous raw material testing, online polymerization viscosimetry monitoring, and final product certificate of analysis (COA) testing (evaluating active content, degree of hydrolysis, dissolution time, and Brookfield viscosity). Samples from each shipment are retained for 2 years for quality tracking.
Explore additional specialised polymer grades engineered by Qingdao Oubo Chemical Co., Ltd. for diverse international applications.
Oubo Chemical