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Services > Wireline Logging Services >FMT Services
FMT Services

Formation Testing & Sampling Services

  • Wireline Formation Tester
  • Rotary Sidewall Coring Tool
  • Sidewall Corgun

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.

  • 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

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.

  • 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
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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