News Release
FOR RELEASE NOVEMBER 21, 2007
For further information: info@cgeology.com
COMPUTATIONAL GEOLOGY'S PRESIDENT DESCRIBES A SIGNIFICANT RE-INTERPRETATION OF THE STEEP FLANK OF THE QARUN "A" LOBE, WESTERN DESERT, EGYPT, AT THE NOVEMBER 2007 AAPG MEETING IN ATHENS, GREECE.
November 21, 2008 --Jim Morse, Computational Geology's President, presented a paper at the November 2007 meeting of the American Association of Petroleum Geologists in Athens, Greece. In the paper, Morse described a significant re-interpretation of the steep flank of the Qarun "A" Lobe, a 100 MMBO (OOIP) field in the Western Desert, Egypt. The re-interpretation was based on Geodes analysis and re-processing of the dipmeter data from the A-17, a key well on the steep flank of this asymmetric anticline.
Based on the original processing of the A-17 dipmeter data, previous interpreters had inferrred that the dip below 8565' MD was approximately 35 degrees. Our Geodes analysis indicated that:
- The search angle used in the original processing had been set too low,
- The computed dips below 8565' were false data points,
- The dip below 8565' most likely is much greater than 35 degrees, and, therefore,
- The dipmeter curves needed to be re-processed using a higher search angle.
A search angle of 35 degrees had been used in the original processing. For the re-processing, a search angle of 80 degrees was used. Geodes analysis of the re-processed data shows that the dips below 8565' are between 50 and 70 degrees, not 35 degrees.
"The implications of our re-interpretation of the A-17 dipmeter are clear", said Morse. "Even though much modern 'dipmeter' data have been picked (correlated) from images by hand and thus do not suffer from search-angle problems, there are thousands of wells with dipmeter and imager data that have been picked by machine. Some of these wells, like the A-17, may have been processed with search angles that were too low. A careful examination of each one of these machine-picked logs will lead to at least some re-interpretations. These, in turn, could (1) prevent the drilling of unnecessary dry holes and (2) lead to new discoveries and/or improved reservoir management."
Computational Geology is a U. S.-based provider of specialty geological software and interpretation services. Current products and services focus on 3D analysis and interpretation of dip data using advanced techniques, including SCAT and isogon-based cross sections.