Abstract: Horizontal Wells in Rotliegendes Gas Fields - Evaluation and Optimization
SALTER, RICHARD P, MARCUS SARGINSON, D. BOARDMAN, A.A.P. TWEEDIE, and PATRICK CORBETT
A dataset comprising
22 horizontal wells in 14 fields from the Permian Rotliegendes Eolian Sandstone
has been analyzed in detail. Integrated geoscience and engineering methods
were applied for interpreting log and well
test data, providing guidance
on data collection, developing predictors for permeability and
well
productivity,
and optimizing
well
location and drilled length. The data analyzed is summarized
in six poster panels concentrating on the following elements.
i) Porosity - Permeability
Characteristics
ii) Horizontal Well
Porosity Logs
iii) Permeability Scale-Up
for Eolian Dune Sequences -
Implications for Well
Placement
iv) Geological Overview of
Layered Rotliegendes Reservoirs
v) PI Prediction for
Horizontal Wells in Rotliegendes
Reservoirs
vi) Rotliegendes Horizontal
Well
Production Log
Interpretation
vii) Horizontal Well
Test
Analysis
While the study focused on
a particular geological depositional setting there is much relevance to
the evaluation of horizontal wells across a range of reservoir types
.
AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria