Low Pressure (2000 psi WP)
This stack (Figure 31) generally consists of one annular preventer a double ram-type preventer (one set of pipe rams plus one set of blind rams) or some combination of both. Such an assembly would only be used for surface hole and is not recommended for testing, completion or workover operations.
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ARRANGEMENT S*A ARRANGEMENT S*RR Double Ram Type Preventers R^, Optional |
Figure 31 Low pressure stack
7.2.1 Normal Pressure (3000 or 5000 psi WP)
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Figure 32(a) Normal pressure stack |
This stack (Figure 32) generally consists of one annular preventer and two sets of rams (pipe rams plus blind rams). As shown a double ram preventer could replace the two single rams.
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ARRANGEMENT S*RA ARRANGEMENT RS*R |
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<? О |
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% |
ARRANGEMENT S*RRA ARRANGEMENT RS*RA
Double Ram Type Preventers Rd, Optional
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Figure 32 (b) Normal pressure stack
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ARRANGEMENT RS*RRA** ARRANGEMENT S*RRRA** ARRANGEMENT RS*RRA**G**
Double Ram Type Preventers Double Ram Type Preventers Double Ram Type Preventers
Rd, Optional Rd, Optional Rd, Optional