Reservoir Description Tool (RDT™)

Now, an advanced wireline formationtesting system that gives you . . .

• Highest quality samples

• Accurate, extensive reservoir information

• Plug’n Play testing versatility

. . . and much more.

Next-Generation Tool Yields Broad Sampling Value

Halliburton’s new Reservoir Description Tool (RDT),incorporating the latest technology in microprocessor control, provides clean, truly representative samples of awell’s formation fluid, along with a broad range of valuablereservoir data. This is accomplished through:

• Zero Shock™ PVT bottomhole sampling

• Formation fluid properties monitoring

• Dual probe anisotropy testing and monitoring

• Pressure gradient testing

• Extended pressure range sampling

Through its advanced digital control feedback system,which makes instantaneous changes in pumpout flow ratesto maintain a prescribed pressure, RDT’s Zero Shock PVTsampling method eliminates pressure transients duringpumping and sampling. Two closely spaced probes are standard, providing a redundant packer seal. The in-situPVT test determines the bubble point and ideal samplingcontrol pressure. Sample chambers are filled against hydrostatic pressure and additional pressure can be applied to maintain its single-phase integrity against thermal gradients.

RDT enables up to eight fluid and formation properties to be monitored during testing: resistivity/capacitance,viscosity, density, bubble point, compressibility, horizontalpermeability, vertical permeability and anisotropy.By monitoring these properties in real time, operators candetermine the optimum point at which to take the samples:a steady state condition indicates that minimum filtrate contamination has been achieved and sampling can begin.

Dual Probe

Section

Quartz Gauge

Section

Flow-Control

Pumpout

Section

Multi-Chamber

Section

HA

L113

WIRELINE AND PERFORATING SERVICES

HALLIBURTON

The Dual Probe Section (DPS) is designed to detect horizontal mobility and permeability (kh) and anisotropy(kv/kh) over an extended range of operation. The DPS pressure testing flow rates are precisely controlled with theadvanced digital control feedback system, thus achievingsteady state pressures very quickly and reducing the testingtime required.

By running two dual probe sections in tandem, the RDT can determine the pressure gradient between the probes and profile permeability and anisotropy. This furtherenables an extended depth of investigation and detection of permeability barriers.

The RDT also provides extended range pressure samplingthrough the use of two flow control pumpout sections, oneconfigured for 4,000 psi pumping pressure and the other for8,000 psi pumping pressure. Where zones are tested over awide range of overbalance pressures in a single trip, the twoflow control pumpout sections can extend the range ofsampling, thus saving rig time and providing higher-qualitysamples. With this feature, the RDT can obtain samples thatare not possible with current generation tools.

Summary of Benefits

• Reduces contamination through faster pumpout times

• Ensures sample integrity through Zero Shock™ pressure control

• Provides highest-quality PVT quality samples available

• Reduces rig time

• Provides accurate, reliable hydrocarbon/fluid typing

• Delivers improved permeability estimates

• Design features offer expanded testing versatility

• Built-in redundancies provide high reliability assurance

PTS

MCS

MCS

FPS

HPS

DPS

PTS

HPS

DPS

QGS

QGS

FPS

MCS

PTS

HPS

DPS

QGS

FPS(4000 psi)

FPS(8000 psi)

MCS

PTS

QGS

HPS

DPS

DPS

QGS

CVS

PTS

HPS

DPS

QGS

FPS

Zero Shock PVTBottomhole Sampling

Formation FluidProperties Monitoring

Dual Probe AnisotropyTesting and Monitoring

PressureGradient Testing

Extended PressureRange Sampling

HA

L140

9

HA

L141

0

HA

L140

6

HA

L140

7

HA

L140

8

PTS – Power Telemetry Section

Pretest Volume 0.1 – 100 cm3

Pretest Rate 0.1 – 15 cm3/sec

Real-time Pretest Control Rate or Pressure

Vertical Probe Spacing 7.25 in (18.4 cm)

Snorkel Cleaning With each set

Pretests per Packer Set Unlimited

Fluid Resistivity 0.01 – 2,000 (ohm-m)

HPS – Hydraulic Power SectionHPS – Hydraulic Power Section

DPS – Dual Probe Section

QGS – Quartz Gauge SectionNormal and Extended Ranges 17,000 – 20,000 psi

Repeatability 1 psi

Resolution 0.01 psi

Accuracy ± [1psi +0.01% of Reading]

FPS – Flow-Control Pumpout SectionPumping @ 500 psi 1.00 GPM

Dual Pressure Range 4,000 – 8,000 psi

Real-Time Pump Control Rate or Pressure

MCS – Multi Chamber SectionPVT Sample Control Zero Shock™

DOT Transportable Chambers 3, 6, 9, ....

Chamber Volume 3 x 1000 cc

H2S-NACE Approval 20,000 psiCVS – Control Valve SectionPVT Sample Control Zero Shock™

Chambers Controlled 2

Chamber Volume 1 – 5 gal

H2S-NACE Approval 20,000 psi

Reservoir Description Tool (RDT™) Specifications

Temperature 350°F

Pressure 20,000 psi

Nominal Diameter 4.75 in

Maximum Diameter at Dual Probe 5 in

Min/Max Hole size 6 – 18 in

Contact your local Halliburton representative for more information on ouradvanced reservoir description technology.

www.halliburton.com/wireline

Sales of Halliburton products and services will be in accord solely with the terms and conditionscontained in the contract between Halliburton andthe customer that is applicable to the sale.

H01961 02/08© 2008 HalliburtonAll Rights ReservedPrinted in U.S.A.

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