The traditional Treatment Technology of Oil-based Mud is recycling and incineration. It is simple processing and low cost. At present, The mainly measures is through physical or chemical method to separate oil from the oil-based mud, such as Incineration, Heat treatment method, Centrifugal separation. But these methods is higher demands on stratigraphy and the incineration can cause serious pollution to the environment.
Incineration Treatment of Oil-based Mud
Incineration is that putting the cuttings waste of oil-based mud into a pyrolysis incineration device to achieve decomposed at high temperature and deep oxidation. In the process of incineration, consumed the oil in the cuttings and reduced the oil content greatly. But This method can produce a lot of smoke during burns, and it is also expensive to process.
Heat treatment of Oil-based Mud
Heat treatment method is that puting oil-based mud into the distillation column and rotaring evaporator to achieve full heating, then cooling collection until most of liquid oil and water evaporative. and discharge directly after the drill cuttings meet emission standards of oil content. But this method of processing costs is very higher. It is estimated that disposal drilling cuttings of one well need the total cost about $330,000.
Centrifugal Separation of Oil-based Mud
Centrifugal separation is that using the principle of centrifugal to separate oil from oil-based mud. That is the specialized centrifugal separation equipment. It is vertical cuttings dryer. After centrifugal treatment, Water-based mud and composite mud: Water content 8-10%, oil-based mud: water content≤6%, OOC≤3%. and this equipment is the environmental and low cost treatment method.
At present, Treatment Technology of Oil-based Mud is has been developing. But Centrifugal Separation method, that is to say, using Centrifugal Separation Equipment, such as vertical cuttings dryer, decanter centrifuge, drilling waste management system, is the most popular measure to disposal oil-based mud, low cost and environmental protection.
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