December 2021 - Drilling waste management,oil based mud treatment,drilling mud circulation system,drilling waste management companies

Waste drilling 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.

The oilfield drilling waste mud treatment process is the immediate disposal of waste drilling mud (drill cuttings) while drilling, meeting the requirement of “mud zero discharge”, reducing land use and reducing 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 water washing, flocculation separation and chemical reaction. Make the cuttings and mud cake meet the discharge standard. After the harmful components 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 for the treatment process of waste oil drilling mud includes: drying shale shaker, drill cuttings dryer, drilling fluid centrifuge, screw conveyor, screw pump, etc. KOSUN’s mud zero discharge system can effectively control the water content of drilling cuttings (6%-10%) in the drilling mud, stabilize the liquid phase performance, and achieve the purpose of zero discharge of the mud.

There are many kinds of waste mud treatment processes in oilfield drilling. Each treatment solution 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.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
Email: sales2@adkosun.com
WhatsApp/Wechat:+86 18792396268
Contact person: Lily Wang
Online consulting:
http://www.kosun.com
http://www.kosuneco.com

The main factor that is difficult to dehydrate and separate water-based mud for oilfield drilling is the complex nature and many components of hydraulic mud.

The product composition of water-based mud in the drilling process is more complicated. The main components of oilfield drilling mud are multiphase colloids such as water, clay, drill cuttings, flocculants, and drilling fluid additives. Chemical agents such as bentonite, weighting agents, inorganic salts, baseless polymers, organics, synthetic polymers and surfactants are often added in the configuration to improve the performance of water-based muds. Groundwater, drill cuttings, clay, etc. that are collected when drilling into the formation in the oil field. Its pH value is a little alkaline, generally 8.15-9.10, the moisture content is usually between 35% and 90%, and the solid phase particle size is generally between 0.01μm2 and 0.1μm2.

The properties of oilfield drilling mud are related to underground structures and rock properties. As the drilling depth increases, the downhole structure becomes more complicated, and the corresponding mud performance requirements and chemical configuration become more complicated. The corresponding pollutants in the solid waste discharged outside are also increasing, the content and the concentration are also increasing. Therefore, it is difficult to dehydrate and separate the water-based mud in oilfield drilling, and it will affect the quality and progress of the drilling project in severe cases.

Month: December 2021

Drilling waste mud treatment is currently a major problem in oil fields

Why is it difficult to dehydrate and separate water-based mud from oilfield drilling?