Schlumberger

FMI Fullbore Formation Microimager

Borehole images and dip data for geology, geomechanics, and 3D reservoir modeling

The FMI fullbore formation microimager provides real-time microresistivity formation images and dip data in water-base mud. With 80% borehole coverage in 8-in boreholes and 0.2-in image resolution in the vertical and azimuthal directions, imaging with the FMI microimager is the preferred approach for determining net pay in laminated sediments of fluvial and turbidite depositional environments.

Visualize sedimentary features to understand structure

Knowledge of sedimentary features is important for determining reservoir geometry and petrophysical reservoir parameters. Image details can be discerned down to 50 um and complement coring and sampling data, especially for describing intervals that were not cored. Interpretation that combines images and derived sedimentary dip data from the FMI microimager gives you greater insight into the sedimentary structures—both natural and drilling induced—that are present in your reservoir.

Better interpret seismic sections with steep and
variable dip

Well-to-well correlation is challenging in deviated wells with intervals at steep and variable structural dip. The pads of the FMI microimager tilt for application in deviated and horizontal wells to provide the same high quality of bedding dip data as in vertical wells. This accurate dip information improves the structural interpretation of seismic sections and computation of true stratigraphic thickness.

Improve modeling outputs

Geological information from borehole images supports stochastic modeling of the sand-shale distribution. Images obtained with the FMI microimager also superbly define channel heights in amalgamated units. Other variables, such as the channel width and channel sinuosity, can be estimated using geological analogs, based on detailed sedimentological analysis of image data.

Borehole images similarly improve your mechanical earth models for optimizing well planning. Better understanding of borehole stability can result in significant savings during field development.

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FMI microimager
The best interval for completion was identified from the FMI microimager's high-resolution images and interpretation using the Techlog wellbore software platform of a secondary porosity system. Read case study

Find Net Pay in Highly Laminated Reservoirs

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