UNDERBALANCED DRILLING OPERATIONS
American Petroleum Institute
1 Scope
2 Referenced Standards
3 Definitions/Abbreviations and Descriptions
4 Planning
5 Well Control
6 Return Flow Process Control Equipment
7 Drill String
8 Circulating Media
9 Well Integrity
10 UBD Operations
11 Site Safety
12 Wellsite Supervision
Annex A
Presents information that can serve as a guide for planning, installation, operation and testing of underbalanced drilling equipment systems on land and offshore drilling rigs [barge, platform, bottom-supported, and floating with surface blowout preventers (BOP) installed] thereby ensuring consideration of personnel safety, public safety, integrity of the underbalanced drilling (UBD) equipment, and preservation of the environment for onshore and offshore UBD operations (including tripping of drill string).
| Document Type | Standard |
| Status | Current |
| Publisher | American Petroleum Institute |
| ProductNote | Reconfirmed 201300 |
