Research on the treatment and recycling technology of waste oil-based drilling mud in gas fields
The waste gas mud generated during the drilling process of the Yanchang gas field is treated with solid-liquid separation,oil/water recycling,and solidification of bottom mud.Research shows that af-ter solid-liquid separation of waste mud,the reduction rate reaches 82.11％,and the oil recovery rate and water content in the recovered oil are 94.50％and 0.43％,respectively;after chemical oxidation floccu-lation filtration treatment,the separated effluent has a light transmittance of over 98.5％and can be used for the repreparation of oilfield working fluids;the oil content in the sediment is 4.56％,and after solidifi-cation treatment,the compressive strength can reach 15.977 MPa.It can be used for laying well pads or roads in oil and gas fields,and the leachate from the solidified form meets the water quality requirements of the"Comprehensive Wastewater Discharge Standard".
万方数据
维普
