Analyses on the Causes of Failures of Abrasion Resistant Ring on Drilling Pipes in Daniudi Gas Field

Abstract:

The failures of abrasion resistant ring on drilling pipes are common during drilling in Daniudi Area. After Analyses and research, it was thought that the main facts which affect drilling pipe abrasion resistant ring failure were abrasive property of formations, selection of high-abrasive material, and wielding technique.

Key words:drilling pipes; abrasion resistant area; eccentric abrasion; abrasive property; counter revolution movement; tungsten