Resource utilization technology of drilling well wastes
A drilling waste and recycling technology, which is applied in the field of drilling waste recycling technology, can solve the problems to be further improved, and achieve the effects of excellent environmental protection benefits, broad social benefits, and strengthening demonstration effect.
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[0038] Example 1
[0039] Taking the treatment of drilling mud, fracturing flowback fluid and gas test wastewater in the Sulige gas field as an example, the comprehensive influent water quality of various drilling waste pollutants in the water quality monitoring report is as follows:
[0040] Table 1 Comprehensive influent water quality indicators of drilling waste pollutants
[0041]
[0042] It can be seen from the test results that the three wastewaters that make up the drilling waste of the Sulige oil and gas field are seriously exceeding the standards in COD, BOD5, inorganic salt content, oil content and other indicators, and the wastewater from the gas removal operation has good biodegradability In addition, the other two wastewaters have low biodegradability and high salt content, which are high-salt and refractory organic wastewater. Therefore, in the selection of treatment schemes, it is necessary to strengthen the pretreatment process before biochemical treatment, a...
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