The Ultimate Route to
Carbonate Rock Typing
Speaker: Omar Al-Farisi
rock heterogeneity makes it hard for Geoscientists and Reservoir Engineers to
define universal classification method that honors critical reservoir static properties.
Classifications like, lithofacies, capillarity, and textural methods based rock
typing on one or two static properties, then tried to find analogue to other
properties by clustering, then populate rock types across the field. However,
from field observations and experiences of using these conventional techniques,
they suffered from several gaps, like inability to have properties analogue
consistent throughout whole reservoir. Besides, the clusters have large
dispersion, producing overlaps, theoretically they could not fully honor the
physics and rock properties links.
research work delivered rock typing model that honors static properties all
together, through changing classification to resolve the gaps of traditional
methods. The goal of reservoir characterization and rock typing is to enable
building geological and simulation models, that best honor properties. To
achieve target, we build framework that focused on analyzing effects of each
rock property on another, adding to the model's most critical boundaries. This
technique resolved the gap of pore and pore-throat network through Multiple
Integrated Carbonate Rock Typing technique starts with capturing the
heterogeneity of carbonate rock by creating a matrix of core permeability,
capillary pressure (end point, threshold pressure, and Plateau), pore-throat
size distribution and porosity. Then intersecting matrix properties to compose
weighted links between properties and to identify unique groups. Resulted
classes are new carbonate rock type classes that entered to feedback analysis
node to explore and confirm linked physics to tune classes’ thresholds and
ensure no overlap between groups. Finally, for using this technique in
non-cored wells, we built an analogue with logging data through innovative
permeability, capillary pressure, and saturation function technique. The novel
function names are, CROPC-1, CROPC-2, (CROPC: Conjunction of Rock Properties
Convergence) and RocMate C-Function (RocMate: Rock Type Matrix), while the
novel permeability estimation technique is called MPTE, (MPTE: Multi Property
There are two identical sessions, please register for only ONE session which fits your schedule.
Morning - Tuesday, October 17th, 8am – 9am US Central Time;
Evening - Wednesday, October, 18th 8pm – 9pm US Central Time.
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