Reservoir and Fluids Characterization
How well do you know your reservoir?
MR Scanner map of gas, oil, and
water diffusion.
Success with heavy oil depends
on a complete understanding
of the reservoir. When the time
comes to make key decisions
such as well placement or completion
design, operators with the most accurate
picture of their reservoir will make
the best choices for their wells and
surface facilities.
Detailed reservoir characterizations
form the foundations for future decisions, such as selecting the right time
and follow-up production method to
enhance overall recovery. The improved
ability to predict how a reservoir will
behave benefits every decision maker
on the project team, from the geologist
and production engineers to the asset
manager. The time and money operators spend in the beginning to learn
about their reservoir will pay off many
times over in the end.
The multidisciplinary suite of
Schlumberger services in advanced
logging, measurement, fluid
sampling, laboratory analysis, and
modeling are designed for a deeper
reservoir understanding.
ADVANCED FLUIDS
CHARACTERIZATION
For a profiled view of the reservoir
fluids, the MR Scanner* expert magnetic
resonance service is provided with the
next-generation wireline nuclear magnetic
resonance (NMR) logging tool. Using
simultaneous multifrequency measure-
ments in a gradient-field design, the
MR Scanner tool performs multiple-depth
investigations in a single pass. Because of
this, it can provide a profile of saturation
distribution and formation damage in
one run. Knowledge of the invasion pro-
file lends important insight to the reverse
process of production. And along with
other formation evaluation measure-
ments, the MR Scanner tool delivers
producibility information that governs
overall project economics.
One of the most important aspects of
heavy oil reservoir characterization is
understanding the potential mobility of
the oil. Applying NMR measurements to
determine viscosity profiles has recently
become possible, utilizing customized
correlations according to not only the
properties of the oil, but also the tool
characteristics and details of data
acquisition and processing.
QUALITY FLUID SAMPLES AND
HIGHLY ACCURATE RESERVOIR
PRESSURES
The RSTPro* reservoir saturation tool
helps you manage complexity by deliver-
ing reliable, accurate answers in today’s
challenging production environment. Run
on the PS Platform* string, with its new-
generation suite of cased hole reservoir
evaluation and production logging serv-
ices, the RSTPro tool uses pulsed neutron
techniques to determine reservoir satur-
ation, lithology, porosity, and borehole
fluid profiles. This information is used to
identify bypassed hydrocarbons, eval-
uate and monitor reserves in mixed
salinity and gas environments, perform
formation evaluation behind casing, and
diagnose three-phase flow independently
of well deviation.
TAKE RESERVOIR PRESSURE
MEASUREMENTS QUICKLY
The Schlumberger MDT* modular form-
ation dynamics tester tool and the CHDT*
cased hole dynamics tester device provide
fast, accurate pressure measurements and
identify and collect high-quality res-
ervoir fluid and core samples for further
laboratory analysis.
You can optimize completion plans, enhance
old or incomplete log data, assess unknown
pay zones and evaluate wells for economic
potential. Plus, acquire multiple formation
pressures, retrieve high-quality downhole
samples and restore pressure integrity
—all in a single trip.
IMPROVED RESERVOIR DESCRIPTION
Obtaining information about the formation,
such as understanding the reservoir structure, identifying and evaluating sedimentary
features and fractures, and visualizing rock
texture can help build the most accurate
picture possible of your reservoir. The FMI*
fullbore formation microimager tool delivers a detailed reservoir description which
ultimately helps to obtain accurate pay estimates in the challenging wellbores of heavy
oil operations.
GREATER INSIGHT
Every reservoir is different. Our broad
range of services is proven to improve
the inputs for greater reservoir insight.
By combining accurate log measurements
and other inputs into a single Petrel*
seismic-to-simulation software model,
datasets can be displayed in either overview or section-specific views—an option
considered particularly important for
steam-assisted gravity drainage (SAGD)
modeling. Changes in modeling parameters can be easily cascaded through to
ECLIPSE* Thermal reservoir simulation
software (and back) which means predicted production or reserves changes
can be evaluated quickly. This allows for
appropriate and timely assessments to
guide decision making throughout the life
of your heavy oil field.
