Abstract: Reassessment of Structural Interpretation
Using 3-D
Visualization of Conventional Logs and Dipmeter Analysis, East Zeit
Field, Gulf of Suez, Egypt
EUBANKS, DARRELL L., PETER HIGMAN and MIKE STELLAS, Schlumberger-GeoQuest; JENNIFER GLASFORD HOOD, Seagull Energy International, Inc.
The East Zeit Field is located in the southern region of the Gulf of Suez along the “B” trend. The Gulf of Suez, Gulf of Aqaba, and Red Sea are rift arms that make up a triple junction between the surrounding tectonic plates. The structural complexity of this area produces a three-dimensional visualization problem for geoscientists.
This problem could probably be solved easily using reliable 3-D
seismic to aid in the interpretation
. In this case, 3-D seismic
does not exist over the field and older vintage 2-D seismic has
very limited value because of thick, shallow layers of evaporite
deposits that are common in this region. Since exploration began,
28 wells have been drilled in the East Zeit Field. Most of the
wells are highly deviated which adds to the difficulty of mapping
the area. A state of the art workstation and software capable of
displaying scattered subsurface data in 3-D and allows interactive
interpretation
were used to unravel the structural complexity of
the field. The
interpretation
software programs used in this study
are IESX* and GeoViz*.
Structural interpretation
is based on well log data that is not
regularly spaced. The log data was projected on a pseudo 3-D
seismic volume and visualized in a three-dimensional cube. This
allows faults and selective horizons to be analyzed using
techniques similar to that of 3-D seismic. The dipmeter analysis
was used to identify faults and orient fault blocks. This paper
describes how 3-D visualization tools were used in the structural
interpretation
of the East Zeit Field.
AAPG Search and Discovery Article #90937©1998 AAPG Annual Convention and Exhibition, Salt Lake City, Utah