Detect and measure features too small for conventional logs
Detect anisotropic features
Differentiate structural and stratigraphic features
Retain flexibility in choosing mud systems
Decrease drilling risk and improve efficiency
OBMI Oil-Base MicroImager tool furthers microresistivity imaging in nonconductive invert-emulsion mud systems.
Even a thin film of nonconductive mud is, essentially, an opaque curtain. The mud prevents conventional microresistivity imagers from measuring the formation. The presence of nonconductive mudcake or mud filtrate further complicates the situation.
Visualize the reservoir
You can see structural and stratigraphic features as small as 0.4 in. [1 cm], giving you high-resolution, azimuthal information. This is not possible with conventional logging techniques.
The resemblance of the OBMI image to whole-round core lets you visualize the reservoir. This is a first for the nonconductive mud environment.
The OBMI tool has been validated in the field with more than 20 brands of diesel-, oil- and synthetic-base muds.
Increase net pay count
A Gulf of Mexico deepwater operator ran the OBMI tool in a partially cored appraisal well. The image accurately reproduced the cored interval. Stratigraphic analysis was successfully extended beyond the cored interval using the OBMI image.
The OBMI Rxo data correlated well with grain-size information from sidewall cores. The operator increased the resulting net pay count by more than 50 ft from the conventional log analysis.
Maximize productivity
Structural dip—too subtle for a dipmeter—was revealed clearly in another OBMI image, confirming the reservoir had been penetrated in the planned location.
The image also confirmed fractures perpendicular to the planned lateral, a critical factor in maximizing productivity at a Canadian horizontal well.
