Although fracturing is an established technology with a wide range of usage, certain reservoir scenarios that appear to be good candidates for its application do not benefit from its usage. Examples of these reservoirs include stratified wells in which some of the layers are water-bearing formations or scenarios where an aquifer is present and the fear of breaking into the water zone exists.

By combining the techniques developed in the magnetic resonance imaging (MRI) and conformance technologies, accurate identification of reservoir conditions can be made, and a fracturing approach that can enhance oil production and reduce or even eliminate water production can then be designed and successfully implemented.

The success of this approach depends on several factors. The first is an accurate description of the reservoir. Without this, it is not be possible to accurately assess the underlying reasons for the water production problems so that the appropriate stimulation design or remedial treatment can be applied.

The importance of using the proper diagnostic tools and techniques is, therefore, of extreme importance when determining what remedial applications should be considered. These tools must determine the type and the location of reservoir fluids as well as whether the encountered water is mobile. Presently, only one technology, MRI, can fulfill all these needs. The tool developed to target this technology is an openhole MRI logging tool that operates on magnetic resonance imaging principles. This tool plays a major role in the successful application of conformance technology.

This paper provides an in-depth discussion on how the concept of coupling fracturing, conformance and MRI technology has been made possible through the application of MRI logs. Simulated examples, created using a commercially available 3-D, 3-phase numerical simulator, will be used to illustrate the technical enhancements and economic value that can be derived through use of this technological integration.

Actual field cases performed in the Permian Basin will be presented and discussed. The cases described in this paper show the extent of the technical and economical successes achieved using this technology.

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