A petrochemical oil-water separation system and process

Feedstock Oil Buffer Tank

Providing buffering, pressure stabilization, and pre‑treatment for impurity sedimentation in high‑temperature residual oil media, it is an indispensable core buffer and pressure‑bearing equipment in refining, petrochemical, and oil‑and‑gas gathering and transportation processes.

Acid Buffer Tank Skid

The acid‑fluid buffer skid is an integrated pressurized unit specifically designed for gas‑field operations such as gas production and produced‑water treatment, using field water as the working medium. It is tailored to meet the demanding conditions found in H₂S‑containing, high‑salinity gas fields, combining functions such as buffering, temporary storage, impact protection, vortex prevention, sand removal, and safe operation into a single compact unit. As the core buffering component of acid‑fluid and produced‑water treatment systems in gas fields, it ensures stable, safe, and corrosion‑resistant operation, thereby supporting the continuous and smooth performance of downstream processes.

High-precision filter

Gravity Separator Skid

Oil-Gas Separation Buffer

Primarily used in crude oil gathering and transportation systems, it buffers pressure and flow fluctuations within the system. By storing and buffering crude oil, it balances supply and demand, thereby stabilizing the production process and ensuring smoother system operation.

Gas-liquid Separator

Gas-liquid separators are used to separate liquid droplets (such as water or condensate) or solid particles carried in natural gas from the gas phase. They achieve separation by altering the direction and velocity of the gas flow, utilizing gravitational settling, centrifugal force, or internal components (such as baffles or wire mesh).

Three-phase separator

The three-phase separator is a critical piece of equipment capable of simultaneously separating well-produced fluids into gas, oil, and water phases. By carefully controlling the fluid flow rate and residence time within the vessel, as well as leveraging gravity differences and coalescing materials, it enables the oil, gas, and water to naturally stratify—allowing each phase to be separately discharged from the top, middle, and bottom outlets. This device serves as the core component for achieving initial crude oil purification and accurate metering.

Vertical Separator

A vertical separator is a vertically installed gas-liquid separator, particularly suited for applications with high gas-to-liquid ratios or limited space. Fluid enters from the middle, with gas flowing upward and exiting through the top outlet, while liquid settles downward and is discharged from the bottom. Its design offers excellent liquid-handling capabilities and more stable liquid-level control, making it commonly used for initial separation after wellheads.

Filter Separator

The filter separator is a device used for separating and filtering impurities in liquid or gas media. It is widely applied in industries such as chemical engineering, petroleum, food processing, and pharmaceuticals, effectively removing solid particles, oil droplets, water droplets, and other contaminants to ensure media cleanliness.

Gas-to-Gas Heat Exchanger

The core function of gas-to-gas heat exchangers is to facilitate efficient heat transfer between two natural gas streams operating at different pressures and temperatures. They are typically employed to utilize high-temperature gas streams (such as flue gas from combustion furnaces) to preheat low-temperature feed gas.

Spent Acid Salt-Soluble Heat Exchanger Tube Bundle

Utilizing heat conduction through metal tube walls, this design enables counter-current heat exchange between hot and cold media in the tube/shell side. Its function is to recover process waste heat (e.g., heating crude oil) or cool fluids (e.g., dewaxing), significantly reducing system energy consumption and operating costs.

Three-phase separator skid

It is suitable for the pretreatment of produced fluids at conventional gas fields, shale gas well pads, and gathering‑transmission transfer stations. Specifically designed to handle a three‑phase mixture of crude oil, natural gas, and formation‑produced water, it simultaneously achieves gas‑phase dehydration, removal of water from crude oil, and oil‑water separation in produced water, serving as a core purification unit at the front end of the gas field’s surface gathering and transmission system.

Natural Gas Desander Skid

The natural gas desander skid is an integrated, high-efficiency sand-removal unit specifically engineered for the demanding operating conditions of high-pressure gas production and fracturing flowback in gas fields. Featuring a 35 MPa ultra-high-pressure design as its core, it combines cyclonic separation with filtration to thoroughly remove fine solid impurities—such as 0.1 mm–sized fracturing sand and formation sand—entrained in the natural gas. The skid also integrates complete process functions for flushing, venting, and blowdown, and is delivered as a fully skid-mounted unit. It provides a safe, efficient, and maintenance-free solution for deep purification of solid impurities in gas-field gathering and transmission systems, thereby ensuring stable operation throughout the entire gas-production process.

Acid Buffer Tank Skid

The acid‑fluid buffer skid is an integrated pressurized unit specifically designed for gas‑field operations such as gas production and produced‑water treatment, using field water as the working medium. It is tailored to meet the demanding conditions found in H₂S‑containing, high‑salinity gas fields, combining functions such as buffering, temporary storage, impact protection, vortex prevention, sand removal, and safe operation into a single compact unit. As the core buffering component of acid‑fluid and produced‑water treatment systems in gas fields, it ensures stable, safe, and corrosion‑resistant operation, thereby supporting the continuous and smooth performance of downstream processes.

Methanol Fueling Skid

Intelligent Foam Displacement Pump Skid

Equipment features: 3 tanks, 1 pump; Processing capacity: up to 30 L of chemical agent per hour; Design pressure: 35 MPa.

Filter Separator Skid

It consists of a filter separator along with related natural gas inlet pipelines, sewage outlet pipelines, natural gas outlet pipelines, venting lines, instrument air lines, and the skid-mounted base, among other components. The working medium is natural gas. Inside the filter separator, there is a coalescing filter element and a vane-type separator assembly for separation purposes.

Truncated Metering Skid

It consists of a filter separator along with related natural gas inlet pipelines, sewage outlet pipelines, natural gas outlet pipelines, natural gas metering pipelines, vent pipelines, instrument air pipelines, and skid-mounted base components. The working medium is natural gas.

Vortex Separator Skid

The cyclone separator skid utilizes centrifugal force to separate solid particles (such as silt and sand) and liquid droplets (like water and condensate oil) from the gas phase, flinging them toward the vessel walls where they settle and are collected. Its core function is to protect downstream equipment—such as compressors and pipelines—from wear and blockage, while simultaneously enhancing the purity of natural gas or process gas. This ensures the safe and efficient operation of the production system, and the skid-mounted design makes it easy to transport and quickly install on-site.

Torch Liquid Separation Tank Skid

This device primarily consists of a horizontal flare knockout drum, process piping, skid-mounted base, electrical control system, and valve assemblies. It efficiently separates gas from liquid, effectively removing any entrained liquids from the flare gas. The separated gas is then routed to the flare module to ensure stable combustion in subsequent processes, while the recovered liquid is pumped under pressure for external transfer, preventing liquid accumulation that could disrupt system operations. Additionally, the system features an integrated skid-mounted design, seamlessly combining separation, pumping, and control components—streamlining installation and enhancing overall reliability.

Heating Furnace Skid

A heating furnace skid is a heating device integrated into a skid-mounted module, designed to heat oil, natural gas, or their associated media (such as water or chemical agents). Its function is to raise the fluid temperature—whether by burning fuel or using electric heating—to the process-required level, thereby meeting operational needs like reducing crude oil viscosity, removing water and salt, or preventing natural gas from freezing. Additionally, its modular design makes it easy to transport and install on-site.

Integrated Natural Gas Metering and Separation Unit

This device primarily consists of a horizontal gravity separator, process piping, skid-mounted base, electrical control system, and valve assemblies. The entire skid integrates flow measurement with gas-liquid separation: first, the impurity-laden gas from the wellhead is directly measured, and then it passes through a built-in separation unit that removes liquid and solid impurities, enabling integrated measurement and separation in a single operation.

Raw gas inlet station separation and buffer skid

This skid-mounted equipment primarily consists of an inlet separator and a fuel gas buffer tank. The remaining auxiliary equipment includes an electric heater (15 kW) and two air-to-gas vaporizers (400 Nm³/h), collectively serving two main functions. The first function is to deliver raw gas from outside the boundary into the inlet separator via the raw gas inlet pipeline, where gas-liquid separation takes place. This process effectively removes solid particles, oil droplets, water droplets, and other impurities from the medium, ensuring its cleanliness.

Liquid Supply Skid

The fluid supply skid is a modular, integrated unit designed to store and deliver large volumes of fracturing fluid (base fluid) to high-pressure pump trucks during large-scale operations such as hydraulic fracturing. It typically includes high-capacity storage tanks, mixing equipment, filtration systems, transfer pumps, and a control system, ensuring that the fracturing fluid is delivered continuously, reliably, and precisely when needed. This makes it a critical piece of supporting equipment for the hydraulic end of fracturing operations.

Acid Supply Sled

The acid supply skid is a complete system integrating the storage, dilution, blending, pumping, and control of concentrated acid—all mounted on a skid-mounted base. Its function is to continuously, safely, and precisely deliver acid fluids at predetermined concentrations and pressures for enhanced-production operations such as acid fracturing and acidizing. By enabling centralized control and automated operation, it significantly reduces the risk of direct human exposure to hazardous chemicals.

Throttle Heating Separation Module

The heater skid primarily consists of the heater body, process piping, skid base, electrical control system, and valve assemblies. The condensate heater features a horizontal cylindrical design with direct heating. The condensate heater comprises an acid gas coil bundle and a shell; inside the heater shell, the heat transfer medium is condensate, which directly heats the sulfur-containing natural gas flowing through the acid gas coils.

Skid-mounted automatic chemical dosing skid

It consists of a chemical tank, metering pump, stirrer, level gauge, and control box. It is primarily used for precisely injecting chemical agents into the production process.

Refining and Petrochemical Empty Tower

An “empty tower” typically refers to a distillation or fractionation column within a refining unit that lacks internal packing or trays (such as the core section of atmospheric or vacuum towers), though it contains trays or packing to facilitate vapor-liquid contact.

Sewage Stripping Tower Skid

The unit primarily consists of a stripping tower skid, a water-ring compressor skid, and supporting valve assemblies, piping, instrumentation, and electrical controls. The wastewater stripping tower skid is a modular device designed for treating sulfur-containing wastewater, primarily applied in petrochemical, refining, and natural gas processing industries.

Zhenhai Refining & Chemical Absorption Tower

Its core function is to selectively capture specific components within a fluid stream (such as natural gas or refinery feedstock) using internally packed adsorbents (e.g., molecular sieves, activated alumina, activated carbon).

1000 kW Water-Jacketed Heating Furnace Skid

Boiler Installation

In the petroleum industry, boiler installations are primarily used to generate high-temperature, high-pressure steam or hot water. Their function is to provide a reliable source of heat and power for production processes (such as thermal recovery of heavy oil and steam-assisted oil recovery), equipment cleaning, heat tracing and insulation, or driving steam turbines.

Water-jacket heating furnace

By burning natural gas or crude oil to generate heat, the thermal medium water in the furnace's water jacket is indirectly heated. This heated thermal medium then transfers its energy to the crude oil or processing medium circulating within the coil. The system's core function is to prevent highly viscous crude oil from solidifying and clogging pipelines and equipment, while ensuring the continued flow of the medium. Additionally, the atmospheric-pressure water jacket design eliminates the risk of direct heating, thereby maintaining the safety and efficiency of the oil and gas gathering and transportation process.

Natural Gas Desander Skid

The natural gas desander skid is an integrated, high-efficiency sand-removal unit specifically engineered for the demanding operating conditions of high-pressure gas production and fracturing flowback in gas fields. Featuring a 35 MPa ultra-high-pressure design as its core, it combines cyclonic separation with filtration to thoroughly remove fine solid impurities—such as 0.1 mm–sized fracturing sand and formation sand—entrained in the natural gas. The skid also integrates complete process functions for flushing, venting, and blowdown, and is delivered as a fully skid-mounted unit. It provides a safe, efficient, and maintenance-free solution for deep purification of solid impurities in gas-field gathering and transmission systems, thereby ensuring stable operation throughout the entire gas-production process.

Reactor

Equipped with a team of professional engineers and an original manufacturer parts inventory, we deliver end-to-end closed-loop management encompassing fault diagnosis, repair plan formulation, and on-site implementation.

Intelligent Defoaming and Filling Device

Multi-stage Coalescing Filter

The multi-stage coalescing filter employs hydrophilic/oleophobic fiber media to forcibly collide and coalesce micron-sized droplets, enhancing separation efficiency through gravitational settling. This achieves deep separation of oil and water, removing suspended water in oil or residual oil in water to ≤5 ppm levels.

Mud Circulation System

The mud circulation system is designed to provide an adequate supply of treated drilling fluid for drilling operations. The drilling fluid circulation system must have sufficient space to handle the fluid both above the suction and balance lines, ensuring that the wellbore remains fully filled with liquid during trips out of the hole.

Wastewater Treatment System

Equipment Advantages: Rapid effectiveness, streamlined process, short construction cycle, compact footprint, and strong shock resistance.

Integrated Heating and Throttling Device

Torch and Water Seal Drum Skid

The flare water seal drum skid primarily consists of horizontal process piping, a skid base, an electrical control system, and a valve manifold. The flare water seal drum achieves unidirectional gas flow control through “water-seal liquid-column pressure,” thereby ensuring the safe venting and combustion of flammable gases while effectively preventing backflow of air and flame flashback—making it a critical safeguard for the safe operation of the flare system.