Sequential Formation Tester IV (SFT-IV)
| The
SFT-IV test tool is used for gathering the quality
formation data required to evaluate reservoir potential
and plan well completions and is part of our
comprehensive line of wireline formation testing
services. This service includes a full suite of open
hole test tools designed to allow the best possible test
in any formation under any condition. |
| » SFT-IV Test Tool Features |
| The
SFT-IV test tool contains the following features: |
- Surface controlled pre-test volumes (0 - 20
cc).
- Multiple drawdown without pad resetting
- Variable rate drawdown (0.1 - 0.33 cc/sec)
- Backflushing of pre-test volume (0 - 20 cc)
- Variable hydraulic pad seating pressure
- Optional precision quartz gauge (14.7 - 12,000 ±1.0 psi accuracy)
|
| » SFT-IV Test Tool Benefits |
| The
SFT-IV test tool offers the following benefits: |
- All parameters necessary for a successful test
–accuracy, adaptability, speed, and reliability— are
designed into test tool.
|
- Pre-test does not start until operator gives the
command, allowing:
- Verification of padset before starting pre-test
- Evaluation of mudcake properties from padset
data
|
- Proprietary quartz transducer technology allows
better response to pressure changes.
- Temperature compensation crystal, attached to the pressure crystal, provides improved temperature compensation and pressure measurement accuracy
- Crystal size and special construction features permit reliable transducer operation – even under
harsh borehole
conditions
|
|
|
 |
| The
SFT-IV probe section is articulated to insure that pad
seals in deviated holes or washed out sections. It
features surface selectable pretest volumes and up to
three sample chambers. |
|
|
|
| Length1 |
Diameter2 |
Maximum
Pressure |
Maximum
Temperature |
Weight |
| (ft) |
(m) |
(in) |
(mm) |
(psi) |
(Mpa) |
(°F) |
(°C) |
(lb) |
(kg) |
| 17.8 |
5.4 |
5.5 |
139.7 |
12,000 |
82.7 |
350 |
176.7 |
Varies |
Varies |
|
| 1Without sample chambers. |
| 2Standard configuration. |
| Various chamber configurations are
available for specific applications or formation conditions.
Check with your local Halliburton representative for further
information. The 2.75 gal (10.4 L) chambers are H2S
compatible. |
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