halliburton formation evaluation rdt tool
TRANSCRIPT
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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