Research on Drilling Fluid Technology in Loose Sandstone Heavy Oil Reservoirs
Most of the reservoirs in China's offshore oilfields are heavy oil reservoirs,and the formation is cemented loosely,so how to improve the timeliness of drilling and completion engineering,reduce the comprehensive cost of development,how to improve oil recovery and increase crude oil production is one of the arduous tasks faced in the development process of heavy oil.On the basis of analyzing the reservoir damage mechanism of offshore loose sandstone heavy oil reservoirs,a polymer micellar drilling fluid system suitable for offshore loose sandstone heavy oil reservoirs was constructed.The results showed that the polymer micellar drilling fluid had a strong ability to bind water and form a film,which could effectively avoid and reduce the intrusion of free water and solid particles into the formation.
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维普
