The Drilling Tools Failure Analysis And Prevention Of Xing Gu7Zone In Liao He Oilfield

Xing gu7hill zone is an ancient hill zone reservoir found very early.Thelithology of oil depositbuial in Xing long tai hill zone is very complicated.The oilreservoir lie hidden in the earth,which is Abrasive formation.Most boreholes in thisarea are lateral well,which are in large displacement and large gradient.The drillstring’ s move at the bottom is very complex.The drilling tools do not work veryoften,especially the drilling tools at the bottom.It’s not only the obstacle to speed upthe rate of drilling, but also causes pecuniary loss to Well drilling.In this essay,the author analysis the drilling tools failure in Xing gu7zone ofLiao He Oilfield.It mainly discusses about the types and the factors that causes thedrilling tools bec ome invalid.It includes the material of the drilling tools,the layerfactors and the Borehole factors.It also studies the stress of the drilling tools at thebottom.From the angle of mechanics,it discusses why the drill stems failure,especially the mechanics reason.It provides the basis of the drilling tools failure.With the method of using newscrew drill and the nonivasive testing technology,the problem of the drilling toolsfailure can be prevented.Speeding up the rate of drilling and gaining more economicbenefits are of great significance.