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Biological drilling waste treatment describes degradation and mineralization of pollutants in drilling waste by bacteria growth, reproduction and internal respiration introduction of degrading bacteria and nutrients with the introduction of degrading bacteria and nutrients. It also takes advantage of biological characteristics in practical operations such as, liquid/solid separation by means of bios and degradation by means of adding microbial flocculant.

1.Completion Drilling of Drilling Waste Generation and Classification
Completion drilling of drilling wastecan divided into two parts: the liquid drilling waste and solids drilling waste. After discarding the liquid effluent from the waste fluids generated by the separation, wellsite wash wells, formation out of water, diesel engine cooling water, cleaning equipment with water and sewage and other wellsite. Waste solids include sludge produced after separation of drilling ​waste fluids, drill cuttings are harmful fluids contaminated parcels, wellsite construction residues, contaminated soil, drilling materials and packaging.

2.Hazardous of Drilling Waste
Many human harmful substances exists in drilling waste,like heavy metal ions, some of the harmful elements, organic chemistry. Once the harmful substances released into the environment around the well site, it will inevitably lead to contamination of soil, surface water and groundwater, causing incalculable damage to the environment,particularly in the sensitive areas environmentally, it would endanger people's health and lives, therefore, the drilling waste management servicesis very necessary.

3.Situation Drilling Waste Treatment about Abroad
At present, foreign countries are the more the attach importance to the development of the oil industry drilling and completion technology, and drilling waste disposal. From the beginning of the last century, appropriate handling equipment and devices are in the international leading level, like the United States, Canada, France and other countries in the drilling process using four solid control equipment to collect cuttings and drilling mud on the drilling and completion of the liquid drilling waste treatment.
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In recently, the KOSUN frontline production and shipping persons were finished the busy production finally, after the trucks are fully loaded with D355 centrifuges, cuttings dryers and Hi-G dryerswere driving out of KOSUN factory, they are gratifying smiled. KOSUN Production Center carries out the “Safe and Efficient” production and service concepts once again, saving a lot of time for the customer.