Oilfield drilling waste mud treatment process

• Sep 15, 2021
• The main equipment of oilfield drilling waste mud treatment process includes: drying vibrating screen, drill cuttings dryer, drilling fluid centrifuge, screw conveyor, screw pump, etc....

Drilling waste mud is one of the main pollution sources in the oil and gas industry, and its waste disposal is currently a major problem that plagues oil fields.

Oilfield drilling waste mud treatment process, that is, real-time disposal of waste drilling mud (drill cuttings) while drilling, to meet the requirements of "mud not landing", reduce land use and reduce environmental pollution. This technology is to change the "end treatment" to "full process control". The waste mud is diluted-flocculated-separated into three parts: cuttings, mud cake and water, and the solids in the mud are treated by washing, flocculation and chemical reaction. , Make the cuttings and mud cake meet the discharge standard. After the harmful substances and chloride ions in the mud are separated into the water, they are dehydrated by vacuum adsorption or extrusion to make mud cakes. At the same time, the waste water separated by centrifugation is subjected to air flotation. The sedimentation, filtration system, and reverse osmosis system are used for concentration treatment. After treatment, the up-to-standard wastewater can be reused for drilling recycling.

The main equipment of oilfield drilling waste mud treatment process includes: drying vibrating screen, drill cuttings dryer, drilling fluid centrifuge, screw conveyor, screw pump, etc. Henglian solid control mud non-grounding system can effectively control the water content of drilling cuttings (6%-10%) in drilling mud, stabilize liquid phase performance, and achieve the purpose of non-grounding drying treatment of the mud.

 

There are many kinds of waste mud treatment processes in oilfield drilling. Each treatment plan needs to be determined according to the drilling site and drilling construction conditions. It must not only achieve the treatment effect, but also meet the national environmental protection requirements, and strive to achieve harmless treatment. , It plays an active role in improving and protecting the environment, soil and groundwater.