本文件介绍了从带水下防喷器组的浮动钻机进行加压泥浆盖钻井（PMCD）的推荐做法。当遇到大量井漏情况时，可实施PMCD，以允许油井施工作业继续进行。尽管本文件仅涉及PMCD，但所述大多数设备也可用于管理压力钻井的地面背压（SBP）方法。然而，用于SBP的许多设备不是PMCD所需的，并且超出了本文件的范围。 以下简要描述的方法也可用于井漏条件下:；但是，它们不在本文件的范围内:a）盲钻（见4.3.2）；b） 连续环形注入钻井（见4.3.3）；c） 浮式泥浆盖钻井（见4.3.4）。

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 is beyond the scope of this document.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).