A method and system for treating waste drilling mud
By adding additives to the drilling waste mud and subjecting to filtration, standing layering, heating and evaporation and demixing treatment, the problem of difficult separation and recovery of oil, water and solids in the mud in the prior art is solved, and efficient resource recycling and environmental protection are achieved.
CN118125679BActive Publication Date: 2025-03-25BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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Patent Information
- Application Number
- CN202410537413.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2044-04-30
AI Technical Summary
Technical Problem
The prior art is difficult to effectively separate and recover oil, solids and water from the waste slurry of drilling, resulting in environmental pollution.
Method used
By mixing the drilling waste slurry with additives, filtration pressure treatment, then standing and layering and heating and evaporation treatment, finally performing glue breaking, emulsifying and centrifugal separation treatment, effective separation and recovery of oil, water and solids are achieved.
Benefits of technology
It realizes efficient separation and recycling of oil, water and solids in the waste drilling slurry, reduces environmental pollution and improves the comprehensive utilization efficiency of resources.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to the technical field of treatment of waste drilling mud, and in particular to a treatment method and system for waste drilling mud. The treatment method comprises: S1: mixing the waste drilling mud with an additive to obtain a solid-liquid mixture; S2: filtering the solid-liquid mixture to obtain a first oil-water mixture and oil mud; S3: allowing the first oil-water mixture to stand for stratification to obtain oil and high-salt water; S4: mixing the oil with the oil mud; heating and evaporating the high-salt water at 100-110°C to obtain water vapor and salt; condensing the water vapor to obtain low-salt water; S5: degelling, demulsifying and centrifuging the oil mud to obtain a second oil-water mixture and a solid mixture; S6: allowing the second oil-water mixture to stand to obtain oil and low-salt water. The present invention optimizes the treatment process, exchanges lower resource input for higher resource utilization, and combines the harmless treatment of mud with the treatment of high-salt water, so that the solid and liquid in the waste drilling mud are successfully separated and recovered.
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