| 摘要 |
An alignment system can include at least one alignment device positioned between two flanges, the alignment device having a greater thickness on one side of the alignment device than on an opposite side of the alignment device. A method of producing a relative angular offset between a first flange and a second flange can include positioning at least one alignment device between the first and second flanges, and securing the alignment device between the first and second flanges, thereby producing the angular offset. A method of aligning an axis of a blowout preventer stack with a rig floor can include positioning at least one alignment device between a first flange, and a second flange of the blowout preventer stack; and securing the alignment device between the first and second flanges, thereby producing an angular offset of the second flange relative to the first flange. |
