Featured Produced Water & Desalination Systems
Explore our core engineering catalog featuring advanced membrane separation, high-pressure desalination, deoxygenation skids, and field-tested water treatment solutions.
China Factory Advantages in Oil & Gas Water Management
The global oil and gas industry extracts an estimated 250 million barrels of produced water daily. Operating an ODM water infrastructure program requires rapid fabrication scale, metallurgy compliance, and cost efficiency.
Integrated Supply Chain Synergy
By leveraging China's dense industrial manufacturing ecosystem, Tongjie produces structural skid frames, specialized super duplex stainless steel (2507/2205) piping, and high-pressure pressure vessels under unified quality control, reducing production cycles by up to 45% compared to Western counterparts.
Stringent Engineering Certifications
Our manufacturing facilities operate under strict compliance with ISO 9001, ISO 14001, and ISO 45001 management systems, CE conformity for electrical safety, and Class II environmental contracting certifications. All skid assemblies conform to ASME Section VIII pressure vessel codes and API standards.
Comprehensive Factory Acceptance (FAT)
Every modular unit undergoes 100% complete wet testing, pressure cycling, hydrostatic testing, and automation validation prior to packaging. Modular containerized configurations arrive on site plug-ready, dropping on-site setup time down to 15 days.
Macro Industry Trends Shaping Oil & Gas Water Management
Stringent environmental standards, ESG compliance pressures, and acute water scarcity in exploration basins are driving the oil and gas sector away from disposal wells toward circular water re-use.
Shift from Disposal to Beneficial Reuse
Disposal via Class II deep injection wells faces regulatory limits due to seismicity concerns in key basins (e.g., Permian, Sichuan). Upstream operators are mandating complete flowback clarification and mineral desalination to reuse water for subsequent hydraulic fracturing operations.
Membrane Brine Concentration (DTRO/STRO)
Traditional thermal crystallizers entail prohibitive capital expenditure and huge carbon footprints. The energy industry is turning to open-channel Disc Tube Reverse Osmosis (DTRO) and Spacer Tube Reverse Osmosis (STRO) operating up to 90–160 bar to treat high-TDS wastewater before thermal polishing.
Autonomous Unmanned Wellhead Units
Remote extraction locations require fully autonomous skid-mounted treatment packages. Equipped with edge-computing PLCs, online multi-parameter analyzers (oil-in-water, conductivity, turbidity), and IoT telemetry, systems enable 24/7 unattended operation with proactive anti-scaling dosing.
Localized Application Scenarios in Upstream & Downstream Ops
Produced water is complex, containing free oil, emulsified hydrocarbons, dissolved solids (10,000 to >200,000 mg/L TDS), silica, barium/strontium scale formers, and toxic volatile compounds.
Shale Gas & Fracturing Flowback
Treating high-salinity flowback with heavy suspended solids and friction reducers. Our modular DAF + Ceramic UF + DTRO train allows up to 90% water recovery for hydraulic re-fracking.
Offshore Platform Produced Water
Space-constrained offshore platforms utilize compact skid-mounted hydrocyclones and microfiltration de-oiling units to meet strict OSPAR and maritime discharge requirements (≤ 15 ppm oil).
SAGD & Thermal EOR Operations
Steam-Assisted Gravity Drainage (SAGD) produces hot bitumen effluent. Custom high-temperature softening, tubular ceramic membranes, and evaporative systems regenerate boiler feed water with silica ≤ 1 mg/L.
Downstream Refinery Effluent & ZLD
Petrochemical processing produces complex phenolic, sulfide-rich blowdown. Integrated MBR, secondary RO, and crystallizer setups enable closed-loop resource recovery with minimal solid residue generation.
Macro Engineered Water Treatment Solutions
A breakdown of process architectures deployed across oilfield produced water, high-salinity treatment, and water recycling.
| Treatment Stage | Process Technologies Deployed | Target Influent Contaminants | Treated Water Quality / Metric |
|---|---|---|---|
| Primary Separation | Hydrocyclones, CPI Plates, Coalescing Separators | Free oil, heavy gravel, large suspended solids | Oil < 50 ppm, TSS < 100 mg/L |
| Secondary De-oiling | Dissolved Air Flotation (DAF), Walnut Shell Media Filters | Emulsified oil, micro-suspended organics, colloidal floc | Oil ≤ 5 ppm, TSS ≤ 5 mg/L |
| Hardness & Silica Polish | Chemical Softening (Lime/Soda Ash), Ceramic UF | Calcium, Magnesium, Barium, Strontium, Colloidal Silica | Hardness < 20 ppm (as CaCO3), Silica < 5 ppm |
| Membrane Desalination | High-Pressure DTRO, STRO, Seawater SWRO Membranes | Total Dissolved Solids (TDS), Chlorides, Sulfates | TDS rejection > 98.5%, Recovery up to 85% |
| Degassing & Polishing | Membrane Contactors (Physical Vacuum Degassing) | Dissolved Oxygen (DO), Carbon Dioxide, Hydrogen Sulfide | DO ≤ 5 ppb, Anti-corrosive reinjection grade |
| ZLD Solidification | Mechanical Vapor Recompression (MVR), Crystallizer | Concentrated DTRO brine (120,000–200,000 ppm TDS) | Distillate recovery > 95%, Dry crystalline salt cake |
Global Procurement Demands: What Overseas Buyers Require
Procuring industrial water systems for oil and gas projects requires alignment with rigorous standards for durability, documentation, and logistical speed.
Comprehensive Traceability & QA/QC
Global EPC contractors (e.g., in the Middle East, Central Asia, and North America) demand rigorous project data books: Mill Test Certificates (MTC EN 10204 3.1), Welding Procedure Specifications (WPS/PQR), Non-Destructive Testing (NDT/X-ray), and complete Factory Acceptance Test (FAT) records.
Harsh Environment Packaging
Equipment deployed in desert conditions (high ambient temperatures up to 55°C, high dust) or cold climates (Kazakhstan, -40°C) requires insulated ISO containers, explosion-proof electrical cabinets (ATEX/IECEx Zone 1/2), and sand-trap ventilation systems.
Lifecycle Component Interchangeability
Procurement teams require designs utilizing internationally supported component brands (e.g., Danfoss high-pressure pumps, Grundfos booster pumps, Siemens PLC/HMIs, DuPont/Hydranautics membranes) to ensure reliable local spare parts availability and simplified field maintenance.
Technical & Procurement FAQ
Detailed technical answers addressing engineering considerations, operational parameters, and delivery workflows for oilfield water management skids.
How does DTRO technology handle high fouling and scaling compared to spiral wound membranes?
Disc Tube Reverse Osmosis (DTRO) features an open-channel geometry where hydraulic fluid flows over octagonal disk carriers with turbulent flow patterns. This hydrodynamic shear stress disrupts concentration polarization and reduces scaling formation. While standard spiral wound modules foul rapidly at high turbidity or SDI > 5, DTRO modules can reliably process produced water with high silt density, variable salinity up to 120,000 mg/L TDS, and traces of free hydrocarbons without catastrophic fouling.
What are the reinjection quality standards Tongjie systems achieve for reservoir pressure maintenance?
Our skid-mounted produced water treatment units integrate multi-stage hydrocyclone separation, coalescing filtration, microfiltration, and membrane degassing to deliver water meeting strict reservoir protection standards: total oil content ≤ 5 mg/L, suspended solids ≤ 1 mg/L, median particle diameter < 2 microns, and dissolved oxygen ≤ 5 ppb. This prevents wellhead plugging, minimizes reservoir souring from sulfate-reducing bacteria (SRB), and limits downhole casing corrosion.
What materials of construction are used for wetted parts in high-salinity sour service environments?
To resist localized pitting, crevice corrosion, and sulfide stress cracking (SSC) in produced water with high chlorides (>50,000 mg/L) and sour components (H2S, CO2), we utilize Super Duplex Stainless Steel (UNS S32750 / 2507, PREN > 42), Hastelloy C-276 for critical instrumentation, high-pressure fiberglass-reinforced plastic (FRP/GRP) piping, and virgin PTFE/EPDM chemical seals adhering to NACE MR0175/ISO 15156 standards.
What is the typical manufacturing lead time for containerized water skids from Shanghai?
Standard skid designs (e.g., containerized SWRO units, deoxygenation degassing units, or 500–1000 m³/day produced water units) have an engineering and fabrication lead time of 6 to 10 weeks. Custom engineered-to-order (ETO) systems requiring explosion-proof ATEX packages, specialized metallurgy, and dual PLC redundancy are delivered within 12 to 16 weeks, followed by complete FAT verification prior to Shanghai port dispatch.
Can Tongjie provide private-label ODM/OEM manufacturing for international engineering brands?
Yes. As an established ODM/OEM partner for multinational engineering contractors, EPCs, and brand distributors, Tongjie provides complete turnkey private-label solutions. We engineer skids according to client design standards, apply custom industrial color palettes, incorporate specific PLC programming libraries, and produce unbranded or client-branded technical documentation, operations manuals, and CAD/BIM models.
Additional Specialized Membrane & Water Systems
Explore our extended lineup of containerized sea water plants, ultrapure electronics water units, demineralized systems, and high-recovery water recycling solutions.
