Research And Application Of Borehole Deviation Prevention And Fast Drilling Technology In Jiangsu Oilfield

There are many kinds of anti-skidding technologies,and the traditional anti-sag drilling assembly shows some limitations in the vertical drilling of high-inclined strata/multi-fault complex formations.The new active anti-sloping technology can be relatively good.It is necessary to control wellbore trajectory,but the cost is relatively high,which is difficult to accept in most domestic oilfields.Therefore,it is necessary to develop low-cost and high-efficiency anti-shock and fast-breaking technology.The pre-bending dynamic anti-sloping fast-breaking technology belongs to a dynamic anti-sway method.The traditional anti-sweeping and fast-beating technology avoids the deformation of the bottom drilling tool as much as possible,while the pre-bending dynamic anti-sloping fast-attack technology recognizes the drilling tool.After deformation inevitability,in turn,the deformation is used to generate a large drop in the dynamic behavior of the wellbore,thereby effectively controlling the wellbore trajectory.Because it uses the dynamic behavior of the pre-bending structure to prevent tilting,this technology is called the pre-bending dynamic anti-skipping technology.This study mainly categorizes the basic principles,applicable conditions,and technical characteristics of several commonly used anti-striking technologies,and focuses on the relevant theories and methods of operation of pre-bending dynamic anti-slope and fast-breaking technologies.In this study,a special software was used to simulate and study it,and the influencing factors of the anti-sweeping force generated by the anti-slope technology's bottom hole assembly were explored.In combination with the formation conditions of the Jiangsu Oilfield,the most efficient drill bit was selected.Anti-slope can achieve higher ROP.Through this study,it was confirmed that the pre-bending dynamic anti-sweeping and fast-beating technology can achieve well-proof anti-swaying and quick drilling,shorten the construction period,improve the quality of the wellbore,and save the drilling cost.Anti-slope quick hit method.By optimizing the structure of the pre-bending dynamic drilling tool assembly and adapting each block to high-efficiency PDC bits in different formations,it can provide powerful technical support for the actual construction of drilling sites in Jiangsu oilfields.