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Services > Wireline
Logging Services >FMT Services |
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FMT
Services |
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Formation
Testing & Sampling Services
- Wireline Formation Tester
- Rotary Sidewall Coring Tool
- Sidewall Corgun
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Wireline
Formation Tester
The Wireline Formation Tester can provide estimates
of production capabilities in zones identified
from open hole logs before incurring the expense
of completing the well. In addition, this tool
can record an unlimited number of pressure tests
and retrieve up to two formation fluid samples
during a single trip down hole. There are two
kinds of tools with the same function, FMT: Formation
Multi Tester and SFT: Select Formation Tester.
Applications
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- Unlimited number of pressure tests in a single
trip downhole
- Up to two formation fluid samples in a single
trip downhole
- Tank valves can be opened and closed repeatedly
to ensure a quality sample
- Estimate reservoir permeability
- Determine pressure gradients
- Determine gas/oil/water contacts, especially
when using quartz pressure probe data
- Determine gravity of recovered sample
- Determine resistivity of recovered sample
- Determine water cut of recovered sample
- Determine gas/oil ratio of recovered sample
- VPC design enhances the recovery of fluid
samples in difficult operating environments
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Rotary
Sidewall Coring Tool
The RCOR tool offers an alternative to percussion
type sidewall coring tools. The system consists
of the downhole tool and a computer-based
surface system. The entire coring and storage
operation is continuously monitored using
the visual display and controlled through
simple commands entered by means of the
keyboard.
The sidewall cores are drilled using a pivoting
bit box. As the tool is lowered into the
hole, the bit box is in line with the tool
body. At the desired depth, the bit box
is pivoted into the "drill" position to
make contact with the wellbore wall. The
maximum retrievable core length is then
drilled, measured, and stored. The tool
can then be repositioned for the next desired
sample. The core sample can be measured
in lab.
During coring, the bit box is locked in
place and the bit advanced with real-time,
graphical monitoring. Once the maximum length
is reached, the bit is retracted into the
tool body and the bit box is rotated to
the "eject" position. At this time, a rod
is cycled into the bit box, ejecting the
core into the tool storage section. The
movement of the core triggers a micro-switch
to provide a real-time measurement of the
retrieved core length.
Applications |
- Build reservoir description with information
about formation lithology and petrology
- Evaluate storage capacity (porosity)
and flow potential (permeability) in lab
- Analyze hydrocarbon type and content
- Measure irreducible water content
- Identify thin producing intervals
- Recognize formation damage/sensitivity,
including clay types
- Facilitate the sampling of hard rock
formations
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Sidewall
Corgun
Conventional methods of coring are used during
the well drilling operation. Often, however,
formation cores are desired after the total
depth is drilled and the basic open hole logs
are complete. The Sidewall Corgun provides
a means for recovering a sidewall formation
sample to confirm zones indicated by the primary
logs.
The SP or Gamma Ray curve, run simultaneously
with the SWC, provides depth correlation with
the primary suite of logs. |
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