Manara Production and Reservoir Management System | SLB


Production and reservoir management system

3D render of Manara production and reservoir management system

Access, measure, and control multiple reservoir drains from single wellbores or multilaterals

Manage your reservoir more efficiently to improve recovery with the Manara™ production and reservoir management system. Now you can benefit from downhole permanent monitoring and in-lateral flow control of multiple zones and compartments in real time—even in multilateral wells.

Control an unprecedented number of zones and compartments with full production information from each to enable unmatched production and reservoir management in heterogeneous or multilayered reservoirs, extended-reach developments, multilateral wells, and extreme reservoir contact (ERC) wells.


Monitor and control multiple reservoir compartments with a single line

The Manara system delivers in situ measurements of pressure, temperature, flow rate, and water cut across the formation face. All sensors are packaged in one compact station with an electric interval control valve (ICV) that has infinitely adjustable settings and is controlled from surface through a single electric line. Use stations in each compartment to maximize hydrocarbon sweep and recovery per well by suppressing unwanted gas and water. Active high-precision control of more than the usual two zones brings new completion opportunities to longer and deeper wells.

Enhance drainage without intervention operations

Data reach the surface almost instantly, where wellbore and reservoir surveillance software facilitates understanding of flow behavior in real time and effective use and analysis of the data through clear displays and ICV setting recommendations. Data workflows embedded in the real-time acquisition and control system software streamline the data gathering and manipulation required, enabling production and reservoir engineers to make decisions in minutes instead of days or weeks. For example, unwanted gas, sand production, or water breakthrough from an individual compartment can be identified and swiftly addressed to maintain production from the remaining compartments without intervention (such as with CT or electric line).

Enable high-reliability multitrip completion installation and workovers

ESP-noise-immune, field-proven AC power delivery and bidirectional telemetry enable use of inductive couplers, eliminating hydraulic wet-mate connections. Moreover, later in the life of the well, remedial operations in the upper completion are greatly simplified. Replacement of an ESP or a safety valve, for example, can be accomplished with greater confidence because the contactless inductive coupler can be reliably disconnected and reconnected multiple times.

Infographic showing conventional well production optimization or problem solving workflow. Infographic showing production optimization or problem solving workflow with the Manara system.
Reservoir and production management decisions that took months—even years—are now possible in days or minutes. Continuous feedback and digital control enable optimized production and maximum recovery.
Electric Intelligent Well Completion
With an all-electric intelligent completion, you'll control fluid contributions across the sandface in near real time for any well length.

What is the risk of system failure due to an electrical issue?

SLB has 40 years of experience with permanent downhole gauges and an electronics survival rate of 99% across 10 years, hence the risk is very low. Key components have built-in redundancy, and failure of one sensor or board does not propagate to the rest of the system.

What contingency measures are in place?

The fail-as-is system is rarely in a closed position. Conventional straddle systems can be deployed on wireline or tractor to plug off a failed open zone. A tubing puncher or sliding sleeve can be used to regain zone production in the unlikely case of a failed closed valve.

How many zones can be deployed and at what depths?

We have deployed six zones in a trilateral well at up to 14,000-ft MD [4,267-m MD] and five zones (with six Manara system stations) at up to 33,533 ft [10,220 m] in an extended-reach well. Simulation modeling is recommended for more than four zones, >15,000-ft MD [>4,570-m MD], and subsea installations. Advanced system modeling capabilities are available.