The invention discloses a
petroleum drilling PDC (
Polycrystalline Diamond Compact)
drill bit balling drum judging,
processing and preventing method, which comprises the following steps of: S1, setting a
drill bit balling drum parameter symptom risk trend as Aprogressive, and when the Aprogressive reaches a corresponding area value, judging that a slight
drill bit balling drum, a serious
drill bit balling drum or a balling drum drilling jamming risk occurs underground; s2, setting the
drill bit balling occurrence support degree as K, determining no
drill bit balling when K is less than 20%, determining slight drill bit balling when K is more than or equal to 20% and less than 55%, determining serious drill bit balling when K is more than or equal to 55% and less than 85%, and determining balling jamming when K is more than 85%; s3, after the two indexes of the A < progressive > and the K value are synthesized, the bit balling degree Bj is judged, B1 is no bit balling, B2 is slight bit balling, B3 is serious bit balling, and B4 is balling jamming; and when the conclusions of the two judgment indexes are inconsistent,
processing is carried out according to a relatively serious condition. According to the method, the underground balling risk can be accurately judged, the
tripping frequency is reduced, and the construction period is shortened.