The Research Of Underbalance Drilling Technology Applying In Daqing Oil Field

The underbalance drilling technology is researched in view of stratum and reservoir geologic characteristic in DaQing oil field highlighting XuJia WeiZi east oil field in this text, it takes active role for valid development of DaQing deep zone natural gas and adding oil outcome.In this text the influential factor and establish way of underbalance drilling drawdown are stressly researched. And the optimize of underbalance drilling fluid is gone on in view of stratum and reservoir geologic characteristic in DaQing oil field, finally a suit of reverse emulsion drilling fluid system fitting DaQing oil field underbalance drilling is established, and it is successfully used and verified in erbalance drilling construction work, the effect is very ideal. Additional the well control technique and commensurable auxiliary technique of underbalance drilling are also systematically analysed, a suit of auxiliary technique and well control scheme of underbalance drilling fitting DaQing oil field zone of negative pressure is established. The more effective technology and insurance are offered for future underbalance drilling.With constant depth study of exploration activity and development, the successful drilling of SongShen 101, WeiShen 5 and XuShen1-1 and so on, the underbalance drilling technology will be universally popularized and applied in DaQing oil field especially XuJiaWeiZi and ShenPing gas field and so on, it has very important meaning for valid development of outer oil field and hydrocarbon stimulating of DaQing oil field, it also offered powerful technical support for sustainable development of DaQing oil field.