Research and Application of Efficient Lubricant FELUBE-W
With the continuous deepening of exploration and development of offshore oil and gas resources,there will be more and more high difficulty and complex wells such as large displacement wells,deep wells,and ultra deep wells in future offshore operations.Due to the complex depth structure of deep wells,ultra deep wells,and extended reach wells,it is difficult to control wellbore trajectory.Insufficient anti friction and drag reduction performance of drilling fluid can lead to excessive frictional torque during the drilling process of the operating well,seriously affecting the drilling efficiency of the operating well.FELUBE-W,an efficient lubricant with excellent anti friction and drag reduction properties,was synthesized using raw materials such as soybean oil,ethanol,triethanolamine oleate,industrial phospholipid oil,and nano calcium borate.Indoor experimental evaluation and on-site application show that the 0.5％efficient lubricant FELUBE-W can reduce the lubrication coefficient of seawater by more than 90％,and the adhesion coefficient of mud cake by more than 50％;When the dosage of efficient lubricant FELUBE-W is 1.0％,the lubrication coefficient of PF-PLUS/KCl drilling fluid can be reduced by more than 50％,the adhesion coefficient of mud cake can be reduced by more than 50％,and the anti-wear and pressure bearing capacity can be increased by more than 4 times;FELUBE-W has little effect on the rheological and filtration properties of PF-PLUS/KCl drilling fluid.It can enhance the anti friction and drag reduction performance of the drilling fluid,significantly improve the torque during drilling,and ensure the rapid and safe drilling of difficult operation wells.
high difficulty and complex wellanti friction and drag reduction performanceefficient lubricantPF-PLUS/KCl drilling fluid
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