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China Petroleum & Chemical News Network (Sinopec News Network) During the drilling and construction of oil and gas exploration and development, a kind of oil-bearing solid oil-based cuttings will be produced, which are hazardous wastes and must be transferred from the well site to the designated professional environmental protection treatment station for harmless treatment
.
The environmental protection technology service company is the only company of Sinopec that has the qualification and ability to treat oil-based cuttings in Hubei Province
The oil-based cuttings collected at the drilling site need to be transported for nearly 700 kilometers to reach the Jianghan Environmental Protection Treatment Station for processing, which is relatively risky
.
Since the beginning of this year, in order to timely transfer oil-based cuttings, the environmental protection technology service company has made every effort to ensure the development progress, starting from the source of reduction, and carrying out oil-based cuttings reduction pretreatment technology
The company established two professional teams, introduced the oil-base cuttings pretreatment system while drilling, collected cuttings by first reducing the volume and then transporting the cuttings, returning the oil-base cuttings from the wellbore to the well site through "spin drying + centrifugation".
"" method of disposal, recovering 15%-25% of the oil-based mud, and handing it over to the well team for slurry preparation, reducing the cost of drilling oil-based cuttings treatment and slurry-based base oil procurement
.
According to reports, under normal circumstances, each well produces 500 cubic meters of oil-based cuttings, which can recover about 100 cubic meters of oil-based mud, which can reduce oil-based cuttings disposal costs, transportation costs, and base oil purchase costs by about 600,000 yuan
.
After pretreatment of oil-base cuttings while drilling, the content of liquid materials has been reduced from the original 30% to the current 10%.
Up to now, the equipment has been applied in 2 wells and has processed 1,324 tons of oil-based cuttings in total, providing green support for oil and gas exploration and development
(Luo Ai on behalf of Hanying)
