The Appliation of A New Rotary Wall Coring Tool in BoHai Oilfield

An independently developed new rotary wall coring tool was successful used in Bohai Oilfield,by which it has been gradually transferred into a conventional exploration technique.The technical characters of the coring tool,down hole operational parameter and the its advantages were described.Well conditions and strata that it could be used were summed up.At the same time,the fundtions of lithologic recognition,reservoir evaluation and as well the evaluation on its oil-bearing property were described in combination with application examples.Based on the study of test data,it shows that the data of rotating wall coring and core analysis are less errors,it indicates that the rotating wall coring can be used to replace the conventional coring under a certain condition.