scope:

The purpose of these recommended practices is to provide accurate information that can serve as a guide for installation of blowout prevention equipment systems on land and marine rigs (barge, platform, bottom-supported, and floating). Blowout prevention equipment systems are composed off all systems required to operate the blowout preventers under varying rig and well conditions. These systems are namely - blowout preventers, kill line, choke manifold, closing unit, diverter, marine riser, and auxiliary equipment. The primary functions of these systems are to confine well fluids to the wellbore, provide means to add fluid to the wellbore, and allow controlled volumes to be withdrawn from the wellbore.

Several new sections have been added in this revised publication; namely, "Diverter Systems", "Inspection and Testing", "Sealing Components", "Blowout Preventer Modifications for Hydrogen Sulfide Service", "Pipe Stripping Arrangements", and "Marine Riser Systems". Although operations are being conducted in areas of extremely low temperatures, a section applicable to this service was not added since current practice generally results in protecting existing equipment from this environment. Procedures and techniques for blowout control have been omitted in this publication since they are beyond the scope of equipment systems contained herein.

Sections 2 through 10 of this publication have been prepared to contain a subsection pertaining to surface installations followed by a subsection for the equivalent subsea installation of blowout prevention equipment. A delineation was made between "surface" and "subsea" equipment installations so these recommended practice would also have utility in floating drilling operations. Unless stated otherwise, statements concerning surface equipment installations also apply to subsea equipment installations.

Equipment arrangements as set forth in this publication are adequate to meet specified well conditions. It is recognized that other arrangements may be equally effective in meeting well requirements and promoting safety and efficiency.