SpectraSphere fluid mapping-while-drilling service

b

Advanced PVT fluid properties play a vital role in estimating reserves, optimizing completions, designing surface facilities, and meeting production goals. However, these datasets are traditionally available only after performing conventional formation sampling.

SpectraSphere* fluid mapping-while-drilling service is the industry’s first to provide high-quality formation pressure measurements, in situ downhole fluid analysis, and representative fluid sampling— all in real time, while drilling.

The unique ability to fully understand

reservoir properties during drilling

operations opens up new dimensions

in well placement and reservoir

characterization while reducing costs.

SpectraSphere service delivers these

advantages in multiple environments—

from enabling advanced knowledge of

untapped reservoirs in exploration to

derisking fluid analysis and sampling

in highly deviated development wells.

Map reservoir fluids while drilling

SpectraSphere

Perform fluid analysis and acquire

representative downhole fluid samples

in the shortest possible time with the

lowest possible risk.

Analyze and capture fluids fast…while drilling

Pretest moduleThis module can operate on its own as a stand-alone formation pressure-while-drilling tool or be combined with the SpectraSphere service pumpout module and sample carriers for fluid mapping operations. The pretest module performs all the functionalities of the industry-proven StethoScope formation pressure-while-drilling service, including time-optimized and pumps-off pretesting. This module also includes

■ high-precision Axton quartz pressure gauge ■ 30,000-psi pressure rating ■ large-diameter probe.

Fluid mapping moduleThe downhole fluid analyzer (DFA) provides real-time reservoir fluid contamination estimation, compositional analysis, and in situ GOR measurements. The pumpout module (POM) contains an electromechanical positive displacement unit that enables accurate pump control for driving the pumpout process.

The pump has a nominal operating range of between 0.1 and 40 cm3/s. This system enables the sampling operation to be driven at a constant rate or constant drawdown pressure, providing precise flowline control to ensure that phase integrity of the fluid is maintained.

The POM also has a resistivity cell, a temperature cell, and two sensor bays that house the DFA. Because the POM requires mud circulation for generating power, the risk of differential sticking is reduced.

Sample carrier module (SCM)The SpectraSphere service can be fitted with up to four carriers, each holding up to three Department of Transportation (DOT)–certified PVT containers. They are either 450- or 250-cm3, single-phase N

2-compensated

bottles that are mounted on the outside of the drill collar and protected by articulated shields.

These DOT-certified containers are designed to be removed from the SCM on the rig for draining on site or at a PVT laboratory. Up to four SCMs may be combined in a single BHA to increase the number of sample bottles per run.

Understand complexities

in fluids distribution and

ensure that, through

a deep understanding

of fluid changes along

the drilled wellbore and

across the reservoir, the

producibility of your

reservoir is maximized.

A new generation of measurementsSchlumberger has been providing downhole formation testing solutions to operators around the world for decades. Industry-standard MDT* modular dynamic formation tester provides pump-controlled flow, real-time contamination monitoring, downhole fluid analysis, and modular architecture. Additionally, customers have used logging-while-drilling services such as the StethoScope* formation pressure-while-drilling service for reservoir management, to optimize drilling and completions, and to minimize risk.

Building on the experience gained with these two technologies, the SpectraSphere service provides accurate pressure measurements, performs downhole fluid analysis, and produces high-quality samples while drilling. The result is operational efficiency that helps operators make better steering decisions and optimize productivity.

The new service comprises a pretest module that delivers a precise formation pressure-while-drilling measurement; fluid mapping module that includes a pumpout module for accurate flowline control and a unique downhole fluid analyzer for real-time fluid steering, contamination monitoring, and in situ fluid property measurements; and a sample carrier module to obtain the samples.

Applications ■ Reservoir fluid characterization ■ Identification of compartments and lateral sealing boundaries ■ Geosteering and well placement ■ Formation testing in complex well profiles, including

extended-reach drilling and deepwater operations ■ Field development planning

Benefits ■ Facilitates early reservoir development decisions and

production optimization ■ Improves reservoir understanding through deep insight

into fluid composition and distribution ■ Enables productivity steering in development wells ■ Mitigates risk in challenging environments because of

reduced footprint on the wellbore ■ Saves operating costs by streamlining well construction

and reducing flat time

Features ■ Advanced downhole reservoir fluid analysis, including

● Hydrocarbon fluid composition (C1, C

2, C

3, C

4, C

5, C

6+, CO

2)

● GOR ● Fluid typing ● Fluid fractions ● Fluid resistivity and temperature

■ Real-time monitoring of mud filtrate contamination, fluid property changes, and system performance

■ H2S-resistant flowline along with coupons at probe inlet to estimate

H2S concentration

■ Dedicated pretest module with high-precision Axton* dynamically compensated single quartz gauge, automated time-optimized pretests, and pumps-off measurement capability

■ Electromechanical displacement unit with precise control of drawdown rates

Real-time rock and fluid mapping at the reservoir scaleThe SpectraSphere service can be used with the GeoSphere* reservoir mapping-while-drilling service to combine structural information with reservoir fluid data, resulting in a true reservoir structural and fluid map. Using deep, directional electromagnetic measurements, the GeoSphere service reveals subsurface-bedding and fluid-contact details more than 100 ft [30 m] from the wellbore.

This combined reservoir-scale view of rock and fluid properties provides an unprecedented depth of investigation, enabling operators to optimize landing, maximize reservoir exposure, and refine field development plans.

Accurate at-surface formation evaluation with zero added riskSurface logging can complement fluid mapping data acquired using the SpectraSphere service. The FLAIR* real-time fluid logging and analysis service provides early insight into reservoir fluid properties and composition through at-surface quantification of C1–C6 and qualification of C7–C8, including methylcyclohexane, light aromatics, and nonhydrocarbons. The combination of the FLAIR and SpectraSphere services enables a continuous fluid profile that can be used to assess reservoir fluid distribution. Additionally, data gathered by the FLAIR service can be used to optimize downhole fluid analysis and sampling at depths.

While-drilling completion and production optimization in complex reservoirsFluid typing can be further optimized with the proVISION Plus* magnetic resonance-while-drilling service, which provides lithology-independent porosity, pore-size distribution, continuous permeability, and direct hydrocarbon detection. The proVISION Plus service measures magnetic resonance and T2 distribution, enabling the real-time identification of bypassed pay zones and the determination of high-permeability areas.

Integrating this information with SpectraSphere service data delivers advancement in real-time producibility assessment, especially in complex lithologies such as heterogeneous carbonates, shaly sands, and low-resistivity pay zones. Paired with SpectraSphere service representative in situ fluid analysis, this information can be used to optimize your entire completion strategy and to design completions programs that yield increased production.

Enhance the value of SpectraSphere service

Information acquired with the SpectraSphere service flows seamlessly into datasets from GeoSphere, FLAIR, and proVISION Plus services

as well as Petrel and Techlog platforms and ECLIPSE simulator. as the well is drilled, aiding decision making during operations. This single-well model is then used to create a multiwell interpretation that provides the input to a simulation model for dynamic behavior evaluation of the reservoir. Detailed 3D interpretations maximize the value of all the sophisticated data collected in modern wells.

■ The formation testing suite based in the Techlog platform enables detailed analysis and reporting of pretests, DFA stations, and sampling data, both in real time and postacquisition. For real-time monitoring and QC, data is received via InterACT* global connectivity, collaboration, and information service directly at the customer office or Schlumberger iCenter* secure network collaborative environment. Detailed interpretation can also be performed after the job to combine reservoir fluid information with petrophysical data.

Maximized value of reservoir answers through interpretation supportTo get the most out of your fluid-mapping program, Schlumberger petrotechnical and reservoir evaluation experts can help you at every stage of planning, execution, and postjob analysis. From designing the optimal module arrangement and specifying test procedures to updating reservoir and field models with acquired data, our teams work with you to ensure that objectives are met.

Wellsite answers include recommendations based on formation pressure, drawdown mobility, hydrocarbon and fluid composition analysis, and GOR. For more in-depth evaluation, advanced interpretation is also available from remote experts at operations centers around the world.

Using advanced software applications, our experts can maximize the value of SpectraSphere service data to enable comprehensive formation evaluation.

■ The industry-standard Petrel* E&P software platform enhances drilling operations by bringing multiple disciplines together with best-in-class science in an unparalleled productivity environment. The Petrel platform supports automated, repeatable workflows to capture best practices and share them across the organization. Data acquired by the SpectraSphere service is easily incorporated into existing models, keeping the subsurface live and current. Embedded cross-domain uncertainty analysis and optimization workflows enable straightforward testing of parameter sensitivity and scenario analysis. Petrel 2016 includes updates to drilling optimization features, such as interactive well path design tools, well plan objects, drilling structure slots, and lateral well plans.

■ With more than 30 years of continuous software development, the ECLIPSE* industry-reference reservoir simulator and INTERSECT* high-resolution reservoir simulator offer the industry’s most complete and comprehensive set of numerical solutions for fast, accurate prediction of dynamic behavior for all types of reservoirs, development planning, and operations. Using information gathered with the SpectraSphere service, the ECLIPSE and INTERSECT simulators can model any field type and any recovery method—from waterflooding to heavy-oil recovery and chemical-enhanced oil recovery.

■ With the Techlog* wellbore software platform, you can bring all of your wellbore data into one highly intuitive application for analyses. The Techlog platform dynamically incorporates the latest data, which can be streamed directly from the wellsite for real-time processing and instantaneous analysis

The latest wellbore data can be brought into the Techlog platform to be dynamically incorporated for real-time processing and instantaneous analysis, aiding decision making during operations.

Data acquired by the SpectraSphere service is easily incorporated into Petrel platform models, keeping the subsurface models live and current. ECLIPSE and INTERSECT reservoir simulators can use the information to model any field type and recovery method.

A new generation of measurementsSchlumberger has been providing downhole formation testing solutions to operators around the world for decades. Industry-standard MDT* modular dynamic formation tester provides pump-controlled flow, real-time contamination monitoring, downhole fluid analysis, and modular architecture. Additionally, customers have used logging-while-drilling services such as the StethoScope* formation pressure-while-drilling service for reservoir management, to optimize drilling and completions, and to minimize risk.

Building on the experience gained with these two technologies, the SpectraSphere service provides accurate pressure measurements, performs downhole fluid analysis, and produces high-quality samples while drilling. The result is operational efficiency that helps operators make better steering decisions and optimize productivity.

The new service comprises a pretest module that delivers a precise formation pressure-while-drilling measurement; fluid mapping module that includes a pumpout module for accurate flowline control and a unique downhole fluid analyzer for real-time fluid steering, contamination monitoring, and in situ fluid property measurements; and a sample carrier module to obtain the samples.

Applications ■ Reservoir fluid characterization ■ Identification of compartments and lateral sealing boundaries ■ Geosteering and well placement ■ Formation testing in complex well profiles, including

extended-reach drilling and deepwater operations ■ Field development planning

Benefits ■ Facilitates early reservoir development decisions and

production optimization ■ Improves reservoir understanding through deep insight

into fluid composition and distribution ■ Enables productivity steering in development wells ■ Mitigates risk in challenging environments because of

reduced footprint on the wellbore ■ Saves operating costs by streamlining well construction

and reducing flat time

Features ■ Advanced downhole reservoir fluid analysis, including

● Hydrocarbon fluid composition (C1, C2, C3, C4, C5, C6+, CO2) ● GOR ● Fluid typing ● Fluid fractions ● Fluid resistivity and temperature

■ Real-time monitoring of mud filtrate contamination, fluid property changes, and system performance

■ H2S-resistant flowline along with coupons at probe inlet to estimate H2S concentration

■ Dedicated pretest module with high-precision Axton* dynamically compensated single quartz gauge, automated time-optimized pretests, and pumps-off measurement capability

■ Electromechanical displacement unit with precise control of drawdown rates

Lithology

Dry Weight

Composition

Yellow Reversed

1.00 255.00

Yellow Reversed

1.00 1.53

Image Orientation, °

Image Orientation, °

Density Porosity

SpectraSphere Service Drawdown Mobility

Core

AO90

AO10

Conventional

Long Spacing Amplitude

Fluid Fraction

CO2

C 1 C 2 C 3–5

C 6+

Pretest Status

MD, ft

Mud Press Before

GOR Optical Density

Neutron Porosity

Gamma Ray

SpectraSphere Service Form. Pressure

0 w/w 1

0 wt percent 1

0 13,000 psi 8,000

0 gAPI 150

3,000 psi 8,000

K-Feldspar

Quartz

Illite

GR Pressure Dynamic ImageQuanta Geo* Service

Static Image NuclearResistivity PermeabilitySpectraSphere Service Fluids GOR Optical Density

XX,050

XX,100

XX,150

ohm.mohm.m

Permeability

1 mD/cP 10,000

1 mD 10,000

1 mD 1,000

1 mD 1,000

1 mD 10,000 1,000 ft3/bbl 1,500 0 g/cm3 0.5

0.5 ft3/ft3 0

0.5 ft3/ft3 0

1 mD 10,000

SpectraSphere Service

Understand complexities

in fluids distribution and

ensure that, through

a deep understanding

of fluid changes along

the drilled wellbore and

across the reservoir, the

producibility of your

reservoir is maximized.

Gulf of Mexico Middle East

Malaysia

7

SpectraSphere fluid mapping-while-drilling service High-quality formation pressure measurements, in situ advanced downhole fluid analysis, and representative fluid sampling— all in real time, while drilling.

SpectraSphere service case studies and specifications n Eni Receives Industry-First While-Drilling Analysis

of Hydrocarbon Composition, Gulf of Mexico Eni used fluid mapping while drilling to obtain in situ fluid properties in a wildcat exploration well

and to acquire reservoir-representative downhole samples. The downhole fluid analysis accuracy was later confirmed by lab testing.

n SpectraSphere Service Saves Hess 3 Days Offshore Malaysia Hess Corporation reduced risk and optimized its logging program with while-drilling formation

pressure and fluid analysis in a highly deviated wellbore that intersected a pressure-depleted zone, which increased the risk of differential sticking.

n Saudi Aramco Validates Drilling Decisions with SpectraSphere Service in Multilateral Horizontal Well

Real-time fluid property analysis and LWD data delivered definitive high-quality fluid information and minimized operational risks in the Middle East.

Module Specifications:

Pretest Probe Module

Fluid Mapping Module

Sample Carrier Module

case studies and product sheets go here in this pocket

*Mark of Schlumberger Fluid Mapping While Drilling is a mark of Schlumberger.Other company, product, and service names are the properties of their respective owners.Copyright © 2017 Schlumberger. All rights reserved. 15-DR-30869

Real-time decisions require real-time fluid analysis. The SpectraSphere fluid mapping-while-drilling service is the only technology that provides high-quality formation pressure measurements, in situ downhole fluid analysis, and representative fluid sampling, all while drilling—so you can make better steering decisions and optimize reservoir productivity.

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