APPLICATIONS ■ Production monitoring ■ Reservoir modeling and management ■ Flow assurance ■ Well intervention ■ Subsea processing ■ EOR

BENEFITS ■ Enables representative subsea sampling

throughout life of field ■ Mitigates risk and enhances flow

assurance management ■ Optimizes multiphase flowmeter

calibration and performance ■ Increases production and recovery rates ■ Reduces capex

FEATURES ■ Flexibility for integration into

subsea hardware and for various sampling applications

■ Three-phase representative sampling from multiple wells in a single dive

■ Phase detection and enrichment ■ Complete chain of custody throughout

sample journey ■ Proven technology ■ Ideal solution for greenfield architecture ■ Retrofit capability for

brownfield applications

Almost all technical and economic studies in the oil industry require an understanding of the reservoir fluids. MARS* multiple application reinjection system sampling technology enables the capture of a representative, uncontaminated sample from multiphase flow, in which the sample has the same molecules in the same proportions as the flow at the sampling point where all three phases are in equilibrium.

■ Each phase is enriched and captured individually to collect sufficient volume of sample from strategically chosen phase-rich sampling points.

■ No pressure or temperature drop should occur during sampling to maintain equilibrium between phases.

■ Each phase is captured and physically or mathematically recombined for reservoir fluids properties.

Subsea sampling using MARS system equipment.

Subsea Sampling SystemsMARS multiple application reinjection system configurations

onesubsea.slb.com/mars

*Mark of SchlumbergerOther company, product, and service names are the properties of their respective owners.Copyright © 2017 Schlumberger. All rights reserved. 17-OSS-287231

Subsea Sampling Case 1Year 2016

Location Offshore Angola

Samples captured and volume, in3 [cm3] Four 36.6 [600]

Working presssure, psi [MPa]

Interface 10,000 [68.9]

Skid 5,000 [34.5]

Water depth, ft [m] 3,610 [1,100]

Subsea Sampling Case 2Year 2016

Location Gulf Of Mexico

Samples captured and volume, in3 [cm3] Four 54.9 [900]

Working presssure, psi [MPa] 15,000 [103.4]

Water depth, ft [m] 9,850 [3,000]

Subsea Sampling Choke InsertEnable sampling access through insert-retrievable choke

MARS System Subsea Sampling Track Record

From production wing valve

To flowline isolation valve

From production wing valve

Subsea Sampling Systems