Managed Pressure Drilling Operations - Pressurized Mud Cap Drilling with a Subsea Blowout Preventer
NORMA vydaná dňa 1.6.2019
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Designation standards: API RP 92P-ed.1
Publication date standards: 1.6.2019
The number of pages: 67
Approximate weight : 201 g (0.44 lbs)
Country: American technical standard
API RP 92P, 1st Edition, June 2019 - Managed Pressure Drilling Operations - Pressurized Mud Cap Drilling with a Subsea Blowout Preventer
This document addresses recommended practices for pressurized mud cap drilling (PMCD) from a floating rig with a subsea BOP stack. When massive lost circulation conditions are encountered, PMCD can be implemented to allow well construction operations to continue:
Although this document only addresses PMCD, most of the equipment described may also be used for the surface back-pressure (SBP) method of managed pressure drilling. However, much of the equipment used for SBP is not required for PMCD, and will not be covered here.
The following methods, described briefly, are also used during lost circulation conditions; however, they are outside the scope of this document:
a) blind drilling (see 4.3.2);
b) continuous annular injection drilling (see 4.3.3);
c) floating mud cap drilling (see 4.3.4).