Page 131 - Well Control for Completions and Interventions

Completion Equipment 123

3.16 PORTED NIPPLES

Ported nipples can be used as an alternative to sliding sleeves.
Honed bores above and below ports allow straddles to be located in the
nipple isolating flow from behind pipe. Production from a zone can be
reinstated by pulling the straddle.

3.17 INFLOW VALVES (INTELLIGENT COMPLETIONS)

In multiple zone single string intelligent completions, production
from each zone is controlled by opening and closing a hydraulically oper-
ated communication device. These are variously called:
• Inflow control valve (ICV)—Halliburton
• Flow control valve (FCV)—Schlumberger
• Remotely operated sliding sleeve (ROSS)—Weatherford.
Inflow valves for intelligent completions vary in design and complexity,
from a simple open/close valve through valves with incremental choke
(multiple position), and valves with an infinitely variable choke and posi-
tion sensor (Fig. 3.30).

3.18 SIDE POCKET MANDRELS

Side pocket mandrels are elliptically shaped with a valve pocket
located to one side of the main bore. This enables different types of flow
control devices to be installed and retrieved using standard slickline tools
(Fig. 3.31).

Figure 3.30 Hydraulically operated Inflow Control Valve.