Detection of layer boundaries in wells using multi-electrode resistivity data

Details Detection of layer boundaries in wells using multi-electrode resistivity data Detection of layer boundaries in wells using multi-electrode resistivity data

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003geoji.153..175w&link_type=abstract

Geophysical Journal International, Volume 153, Issue 1, pp. 175-186.

Physics

Geophysics

Borehole Geophysics, Electrical Resistivity, Layer Boundaries, Numerical Techniques

Scientific paper

Multi-electrode resistivity data can be used to compute the measurable response for conventional and focused configurations. Some of them are appropriate for detecting layer boundaries. Three different configurations are investigated concerning their suitability for identification of bed boundaries: a second difference configuration, a combined lateral configuration and a Laterolog-7. A normalized apparent resistivity is used as an indication parameter for detection of horizontal bed boundaries for the first two configurations. For the Laterolog-7, the curve of the logarithm of the quotient of the two current ratios is used. The boundaries are indicated by extreme values in the relevant curves. The ability of layer identification of the three configurations is tested with synthetic and measured data.
The parameter curves provide different information: the peaks indicate the presence of a layer boundary, the sign of the peak (positive or negative) indicates the type of transition (resistive-conductive or conductive-resistive). The Laterolog-7 shows the best results concerning resolution and accuracy. It yields additional information as the absolute values are related to the resistivity contrast of the adjacent beds. The combined lateral configuration also proved to be suitable for detection of layer boundaries. The second difference configuration only indicates the transition from conductive to resistive layers. It is severely affected by noisy data.

Affiliated with

Also associated with

No associations

Rating

Detection of layer boundaries in wells using multi-electrode resistivity data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Detection of layer boundaries in wells using multi-electrode resistivity data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of layer boundaries in wells using multi-electrode resistivity data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-847149