TRFC-LT hydraulic flow control valves | SLB

TRFC-LT hydraulic flow control valves

Provide surface-actuated zonal control for shallow, low-temperature, low-productivity wells

Stylized image of blue and white planes arranged in spirals.

Control zonal flow where it was previously prohibitive

TRFC-LT direct-position tubing-retrievable flow control valves expand the economic feasibility of intelligent completions to lower-productivity wells. They can be part of an integrated intelligent approach or installed as stand-alone tools.

The valves are actuated from surface by applying differential hydraulic pressure across a balanced piston. The balanced piston design eliminates the need to counteract control line hydrostatic head during operation.

This valve controls flow between the annulus and tubing; flow enters the valve radially. Two versions of the valve are available: on-off or four position. For the multiposition valve, various choke bean sizes are available. When the valve is fully open, there is no restriction to fullbore flow.

  • Multizone intelligent completions
  • Commingled-flow completions
  • Compartmentalized horizontal wells
  • High-water-cut wells

Cost-effectively optimize well performance

TRFC-LT valves enable cost-effective optimization of well performance by reducing unwanted water and gas production. Zonal control improves production or injection sweep. Operators can enhance dynamic reservoir characterization through periodic zonal tests without need for interventions. Using surface-controlled chokes also eliminates the costs and risks of several other well interventions (e.g., to adjust the chokes) that would otherwise be required. When used in conjunction with PT gauges, the valves enable accurate production allocation.

  • Customizable choke is available in on-off or four-position versions.
  • Direct-position valve can shift directly from any position to any other position.
  • Balanced piston design eliminates the need to counteract control line hydrostatic head during operation.
  • Each valve in the well has a dedicated “open” line, while the single “close” line is shared by all.
  • Integrated bypass slot is provided for electrical, fiber-optic, or hydraulic line(s).

What do these valves replace?

Downhole interventions to adjust zonal contribution via mechanically shifted sliding sleeves.

How many control lines are required?

A single-zone well requires two hydraulic control lines. For multizone wells with multiple TRFC-LT valves, each valve has a dedicated “open” line while a single “close” line is shared by all (i.e., n + 1 lines for n zones).