高密度废钻井液中重晶石回收工艺综述OA

Barite is one of the main weighting agents for drilling fluid in oil and gas fields all over the world.There are some problems such as excessive consumption of resources and low difficult recycling and low recovery quality in the use of barite.In this paper,the current situations and difficulties and of barite recovery in waste drilling fluid of oil and gas fields well sites in China were analyzed.The current technique and application of barite recovery in waste drilling fluid were summarized.The advantages and disadvantages of recovering barite from waste drilling fluid by multi-centrifuge combined recovery method and flotation method were described.On this basis,it was proposed that the flotation process should be introduced for the recovery of barite in waste drilling fluid to make up for the limitation of the separation effect of solid control equipment,and the development of barite recovery process was prospected.It was pointed out that in the future,the development of combined flotation reagents should be strengthened in China,and the synergistic mechanism between reagents needed to be fully studied.In consideration of environmental protection,economy and high efficiency,meanwhile and the recovery of barite in low-grade barite and waste drilling fluid was guided.