WIRELINE AND PERFORATING SERVICES
Reservoir Description Tool (RDT™) Now, an advanced wireline formation Now, testing system that gives you . . . High Highest est quali quality ty sampl samples es • Accurate, extensive reservoir information • Plug Plug’n ’n Play Play testi testing ng versa versatili tility ty . . . and much more.
Dual Probe Section
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 representative samples of a well’s formation fluid, along with a broad range of valuable reservoir data. This is accomplished through:
Quartz Gauge Section
• Zero Shock™ PVT bottomhole sampling • Forma Formation tion fluid prope properties rties moni monitorin toringg • Dual probe anisotropy testing and monitoring • Press Pressure ure gradien gradientt testi testing ng • Exte Extended nded press pressure ure range sampl sampling ing
Flow-Control
Through its advanced digital control feedback system, which makes instantaneous changes in pumpout flow r ates to maintain a prescribed pressure, RDT’s RDT’s Zero Shock PVT sampling method eliminates pressure transients during pumping and sampling. Two closely spaced probes are standard, providing a redundant packer seal. The in-situ PVT test determines the bubble point and ideal sampling control pressure. Sample chambers are filled against hydrostatic pressure and additional pressure can be applied to maintain its single-phase integrity against thermal gradients.
Pumpout
RDT enables up to eight fluid and formation properties to be monitored during testing: resistivity/capacitance, viscosity, density, bubble point, compressibility, horizontal permeability, vertical permeability and anisotropy anisotropy.. By monitoring these properties in real time, operators can determine 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.
Section
Multi-Chamber Section
3 1 1 L A H
HALLIBURTON
The Dual Probe Section (DPS) is designed to detect horizontal mobility and permeability (kh) a nd anisotropy (kv/kh) over an extended range of operation. The DPS pressure testing flow rates are precisely controlled with the advanced digital control feedback system, thus achieving steady state pressures very quickly and reducing the testing time 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 further enables an extended depth of investigation and detection of permeability barriers. The RDT also provides extended range pressure sampling through the use of two flow control pumpout sections, one configured for 4,000 psi pumping pressure and the other for 8,000 psi pumping pressure. Where zones are tested over a wide range of overbalance pressures in a single trip, the two flow control pumpout sections can extend the range of sampling, thus saving rig time and providing higher-quality samples. With this feature, the RDT can obtain samples that are 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
Zero Shock PVT Bottomhole Sampling
Formation Fluid Properties Monitoring
Dual Probe Anisotropy Testing and Monitoring
Pressure Gradient Testing
Extended Pressure Range Sampling
PTS
PTS
PTS
PTS
PTS
HPS
HPS
QGS
HPS
MCS
HPS DPS
DPS
QGS
QGS
QGS
FPS
FPS
DPS DPS
MCS
QGS FPS
6 0 4 1 L A H
FPS HPS
(4000 psi)
DPS
QGS
FPS (8000 psi)
MCS
DPS 9 0 4 1 L A H
CVS 0 1 4 1 L A H
MCS 7 0 4 1 L A H
8 0 4 1 L A H
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
PTS – Power Telemetry Section HPS – Hydraulic Power Section DPS – Dual Probe Section Pretest Volume
0.1 – 100 cm3
Pretest Rate
0.1 – 15 cm 3/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)
QGS – Quartz Gauge Section Normal 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 Section Pumping @ 500 psi
1.00 GPM
Dual Pressure Range
4,000 – 8,000 psi
Real-Time Pump Control
Rate or Pressure
MCS – Multi Chamber Section PVT Sample Control
Zero Shock™
DOT Transportable Chambers
3, 6, 9, ....
Chamber Volume
3 x 1000 cc
H2S-NACE Approval
20,000 psi
CVS – Control Valve Section PVT Sample Control
Zero Shock™
Chambers Controlled
2
Chamber Volume
1 – 5 gal
H2S-NACE Approval
20,000 psi
Contact your local Halliburton representative for more information on our advanced reservoir description technology.
www.halliburton.com/wireline H01961 02/08 © 2008 Halliburton All Rights Reserved Printed in U.S.A.
Sales of Halliburton products and services will be in accord solely with the terms and conditions contained in the contract between Halliburton and the customer that is applicable to the sale.
HALLIBURTON
