Produced water treatment systems that enable reuse, discharge, or water disposal. Seawater Treatment Systems that prepare seawater for oil and gas use by treating biofoulants, dissolved oxygen, and suspended or dissolved solids.
Full Answer
What is seawater treatment?
Seawater Treatment Offshore For offshore oil platforms and drilling rigs sea water is the major source of water. Depending on the location, it contains large amounts of salt and/or calcium carbonate. Both substances can harm pipes and technical devices. Therefore sea water treatment is an urgent topic in this environment.
How is seawater used in oil and gas industry?
Systems that prepare seawater for oil and gas use by treating biofoulants, dissolved oxygen, and suspended or dissolved solids. Oil and gas facilities use seawater for a variety of applications, including EOR, equipment cooling, fire suppression, potable water generation, and desalter operations.
How can we prevent contamination of seawater treatment systems?
Prevent contamination of seawater treatment systems from bacteria to barnacles. Deoxygenate seawater prior to downhole injection to reduce tubular and pipeline corrosion. Remove dissolved solids from seawater used for injection, minimizing reactions that can cause formation issues.
How does a water treatment plant work?
Water treatment plants are capable of pulling out impurities such as solid waste, debris, heavy metals, oil, and germs from the water. This helps maintain the water quality, so everyone can have access to safe drinking water.
How is water treated in an oilfield?
Chemical treating methods The chemical treatment methods include coagulation or flocculation combined with flotation and filtration, precipitation-flocculation, electroflotation, electrokinetic coagulation, conventional oxidation methods using many oxidants which can break multiple pollutants.
What plant is used in water treatment?
WASTEWATER TREATMENT WITH AQUATIC PLANTS Treatment systems using aquatic plants consist of shallow reservoirs containing floating or submerged aquatic plants. The best studied wastewater systems are those utilizing duckweed (Lemna minor).
What is RO in oil and gas?
Reverse Osmosis Is An Aid To The Oil And Gas Industry - Ampac USA. Advanced Water Treatment Solutions. You are at Home Commercial Reverse Osmosis Reverse Osmosis Is An Aid To The Oil And Gas Industry.
How do surface water treatment plants work?
Water is passed through a filter made of sand, coal particles or similar materials that removes particles such as silt, other very fine solids, and some pathogens not settled in the sedimentation process. Filtration further reduces turbidity and results in water that is crystal clear.
What are the 3 types of water treatment plant?
Types of Water Treatment PlantsWastewater Treatment Plant (WWTP) ... Sewage Treatment Plants (STPs) ... Effluent Treatment Plants (ETP's) ... Demineralization (DM) Treatment Plants. ... Reverse Osmosis (RO) Water Treatment.
What are the two main types of water treatment plants?
Common and Combined Effluent Treatment Plants.
What is CoP in oil and gas?
Within this guidance, CoP refers to the licensees ceasing production permanently from a field, a group of fields, an asset within a field or a field acting as a hub.
What does tar stand for offshore?
Time apportionment relief (TAR) can reduce a gain when the bond owner has been non-resident at some point during the investment period. This reduction can be used for gains on all offshore bonds, and some onshore bonds.
What does MBD stand for in oil?
Abbreviation mbdMbd: MeaningMbdthousand barrels (of oil) per day
What is the main purpose of water treatment?
Water treatment is a process involving different types of operations (physical, chemical, physicochemical and biological), the aim of which is to eliminate and/or reduce contamination or non-desirable characteristics of water.
What are the 4 steps of water treatment?
Water treatment stepsCoagulation. Coagulation is often the first step in water treatment. ... Flocculation. Flocculation follows the coagulation step. ... Sedimentation. Sedimentation is one of the steps water treatment plants use to separate out solids from the water. ... Filtration. ... Disinfection.
What is the difference between surface water treatment and wastewater treatment?
Water Treatment Plants (WTP) generally are smaller operations than Wastewater Treatment Plants WWTP) because of the water quality coming in. WTPs pull water from a local river, lake or well. This water is generally clean (compared to sewage!) and just need a bit of cleaning and disinfection.
Where is seawater taken from?
Seawater Treatment Offshore. For offshore oil platforms and drilling rigs sea water is taken direct from the ocean. Seawater is the major source of water offshore. Depending on the location where the rig is operating, the seawater might contain large amounts of salt and/or calcium carbonate. Both substances harm pipes and technical devices.
What is CNOOC oil?
One of our largest customers facing these problems is CNOOC (Chinese Offshore Oil Company ). They are drilling for oil and gas and produce oil in the Chinese Sea. Lately they have expanded their activitiy to the Gulf of Mexico, the North of Indonesia and the North Sea. Today they operate more than 20 manned offshore platforms.
Is sea water treated?
Therefore sea water treatment is an urgent topic in this environment. Sea water is used direct without desalination for cooling processes or for the drilling itself. It is treated and clarified in several steps to get drinking water, potable water or feeding water for steam boilers or other sensitive equipment.
Can seawater be desalinated offshore?
A seawater desalination of all the water they need, is no option offshore. There is just not enough space for even a small desalination plant offshore. Our task was not the desalination, but to prevent further fouling and to remove the existing limescale, corrosion and biofilm.
How is oily water fed?
oily water without excessive emulsion) is sucked up from the oily water tank and fed by the feed pump through the filter and pre-heater via the feed valve to the separator. During the start-up or ejection program it is led back into the oily water tank.
What are the constituents of waste water?
Waste water is a mixture of the following constituents: 1 Cooling water leakages 2 Fuel and lube oil leaks 3 Drainages from settling and sludge tanks 4 Effluent from various cleaning processes
Oil/Water Separation
- When reservoir fluids (gas/oil/water) are brought to the surface for separation and treatment the pressure is reduced and this sometimes results in the formation of insoluble scales. In simple terms the reduction in pressure allows soluble bicarbonates to be converted to the carbonate ion with the release of CO2 gas: 2HCO3− → CO32− + CO2↑ + H2O The...
Deoiling Produced Waters
- In the early days of treating these waters the systems used tended to be based on mineral treatment technologies, which removed the larger oil droplets but not the smaller ones. Advances in the technology for removing dispersed oil droplets from produced water have centred on the following methods; a) increasing the overall droplet size (coalescence) (Figure 3); b) systems w…
Other Waters
- From Figure 1 it can be seen that as the oil is produced two other mechanisms occur as the pressure reduces. These are expansion of the gas cap and an increase in the level of the oil/water interface. The first mechanism is undesirable as the reduced pressure can also allow gas dissolved in the oil to come out of solution. As the gas is more mobile than the oil it will flow pre…
Injection Water Treatment
- By far the most commonly used waters for injection purposes is seawater and the current discussion of injection water treatment will focus on this. Seawater contains suspended solids, bacteria and dissolved oxygen, all of which can have an adverse effect on either the reservoir's ability to sustain long term injection of water or on the long-term life of the materials used to ha…
Conclusions
- There are many reasons why water treatment is a vital and integral part of both oil and gas production operations. Inadequate design of the water treatment system, or forgetting to optimise the system's operation, could lead to a shutdown of the hydrocarbon production system. Such a shutdown might have to last until the problem has been resolved, with associated significant los…