TRIGONOMETRICAL APPROACH TO PSEUDO ELASTIC IMPEDANCE AND CURVED PSEUDO-ELASTIC IMPEDANCE ATTRIBUTE FOR RESERVOIR CHARACTERIZATION OF ROABIBA TIGHT SAND, 'JAKIS', FIELD, BINTUNI BASIN
Roabiba Formation is one of significant hydrocarbon-producing reservoir in Eastern Indonesia region. This reservoir is located quite deep, is structurally intensive, and has high relief aspect. The high reliefness gives Roabiba a nonlinear trend of reservoir physical parameters. The nonlinear tre...
Saved in:
| Main Author: | |
|---|---|
| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/51616 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Roabiba Formation is one of significant hydrocarbon-producing reservoir in
Eastern Indonesia region. This reservoir is located quite deep, is structurally
intensive, and has high relief aspect. The high reliefness gives Roabiba a nonlinear
trend of reservoir physical parameters. The nonlinear trend of physical parameter
could be solved by the usage of curved pseudo-elastic impedance (CPEI) and
pseudo elastic impedance (PEI), with the approach to petrophysical parameters
trend that are going to be analyzed, which consist of porosity through PEI and fluid
distribution through CPEI.
In this research, CPEI and PEI will be generated from domain of murho-VpVs.
CPEI and PEI will be tried in two different methods. First, by polynomial version
of CPEI and PEI through empirical approach to Rock Physics Templates (RPTs).
Second, by trigonometrical function with direct correlation analysis between the
function and targeted petrophysical parameters. Trigonometrical function of CPEI
and PEI could give better correlation towards petrophysical parameter than
polynomial, with simpler equation to be adapted into different domains, resulting
in more efficient workflow. The trigonometrical function of CPEI and PEI are then
utilized to generate the attributes’ volumes. Comparison between petrophysical
logs and value from corresponding volumes shows good correlation., with low
water saturation are associated with extensive low CPEI zone, while it applies the
same between high porosity and extensive low PEI zone.
Analysis of CPEI and PEI distribution resulting in the determination of several zone
of interests, with several zones on high structure but the other is in deeper area and
directly connected to the main structure. The most interesting feature of this deeper
area is dominated largely by low CPEI value while also have relatively higher PEI.
This indicates the prospect of extensive tight gas sand that could be planned for
further field development. |
|---|