Analysis on Salt Gypsum Drilling Fluid Technology at Home and Abroad
Salt gypsum is a worldwide technical problem in drilling operation.Oil and gas companies in the whole world have encountered salt gypsum in varying degrees,and many deep salt gypsum wells were forced to finish ahead of schedule due to borehole stability,or abandoned due to casing collapse,which wasted lots of manpower,material resources and materials,and seriously affected the exploration and development.In this paper,the technical problems in salt gypsum operation were comprehensively summarized and analyzed from the characteristics of salt gypsum,and the salt gypsum drilling fluid technology and field application cases at home and abroad were introduced,then the drilling fluids used to drill salt gypsum in deepwater or ultra-deepwater zone was given.At the same time,the technical ideas were put forward for the later solution of drilling fluid technology in deep water salt-gypsum layer.