In the face of the increasingly serious environmental problems, we have to mention the protection of the environment again. Human beings continue to discharge pollutants into the environment. If the substance emissions exceed the self-purification capacity of natural environment, it will cause adverse changes in environment quality, and endanger human health and survival, which results in environmental pollution.
Recent these years saw rapid development in China and the whole world. Mechanical industry’s leading development has been driving up the demand for oil that lead to thousands of oil projects, whose pollution also created tons of trouble to Earth’s environment. Here provoked a problem that needs a careful think of all oil explorers when environmental protection is being ever touchy nowadays.
Drilling Waste Management
How can we minimize waste in the oilfield drilling?
KOSUN who has been specialized in oil drilling machines began seeking for solutions on the site in order to truly green oil drilling. Waste disposal was the biggest problem for oil drilling contamination. We need to minimize it and even better, zero it, then we can achieve greening of oil drilling.
Via 20-year grueling efforts from 1990s to early 21st century, KOSUN has developed oil drilling solids control system and drilling waste management equipment and has set up an integrated waste management solution system by combination of domestic and foreign treatment experience learnt on the site.
This solution would deal with disposal at the source by means of solids control equipment, dewatering purification equipment and waste management equipment.
The first part---solids control equipment, comprising shale shaker, vacuum degasser, desander, desilter, decanter centrifuge, is directly connected to mud pumps. The drilling mud drawn out from well would go through the four phases of solids control system. Afterwards, it would be used again and the disposal is minimized at the same time.
The next part after solids control is dewatering and water treatment, via which water may be effectively recycled. If they are applied in water-scarce area, large amount of water would be saved and waste disposal reduced.
Then, screw pump or screw conveyor may transport dewatered waste to Hi-G dryer and vertical centrifuge, waiting to have solids and liquid separated again. Hi-G dryer’s high spinning speed and effective treatment would produce very dry dregs, recover partial drilling fluids and recycle resources.
In the end, the dregs would be further treated by means of solidification, cutting injection, biodegradation, thermal desorption according to the actual situation on the site of drilling and the composition of dregs.
Drilling waste disposal would be reduced to almost zero after going through the system, effectively satisfying the demands for zero disposal and the state environmental protection regulations, solving the vexing problems in oil drilling, and truly fulfilling the wish of “green drilling” in oil industry.
