Application of seismic attributes to delineate the geological features of the Malay Basin

Abstract

The Melor-field of the Malay basin has been investigated using several seismic attributes to present the geological elements accurately. This study used a new seismic attribute to represent the geological features of the study interval. Besides, the application of some seismic attributes was applied to reveal the structural and geomorphological features of the Melor-field. The limited available wells (Melor-Well-1 & Melor-well-2) in the study area resulted in high uncertainty regarding petrophysical parameters, particularly in net sand distribution, while the western and eastern parts did not have any well control. Considerable heterogeneity was evidenced in the reservoir quality between the reservoir encountered in Melor-1 and Melor-2 Wells. Three-dimensional geological modeling was utilized in this study to integrate the geological and 3D seismic results with the well logs and seismic attributes to address the above uncertainties. This helps to estimate the reservoir properties for the distances away from the wellbore. The results showed that the fields of the Malay basin are dominated by semi-flattened depositional sequences with heterolithic interbedding associated with a high degree of vertical heterogeneity. The systems tract has been evaluated, although the study area was very complicated. A new method consisting of multi-seismic attributes, thoroughly picked horizons, well logs, and seismic data, which has been used in this research to establish a reliable sequence stratigraphy and system tract framework. Seismic sequence stratigraphy spectral analysis is a new attribute used to represent a 3D visualization of the studied interval. The original amplitude, coherence, and spectral decomposition have been utilized to display the geological features hidden in the seismic data. These attributes are based on the properties of the seismic data, which itself is the result of relevant geological phenomena. The results of this research can be a wide-based reference for further studies in this area.

Seismic Sequence Stratigraphic Sub-Division Using Well Logs and Seismic Data of Taranaki Basin, New Zealand

“…A fault line is a collection of one or more digitized fault segments. Continue picking on successive vertical displays as required on all over the seismic lines affected by faults [38]. The fault segments for each fault were traced over the available seismic sections which are automatically triangulated in used software to give a fault surfaces.…”

New Insights into the Structural and Stratigraphic Evolution of the Malay Basin Using 3D Seismic Data: Implications for Regional Carbon Capture and Storage Potential

“…More recently, scien�fic focus has shi�ed to understanding the petroleum system (Bishop, 2002;Doust & Sumner, 2007;Doust, 2017;Madon et al, 2006;Nayak et al, 2023;Petersen et al, 2011), overpressure (Ahmed Sa� et al, 2016;Madon, 2007;Tingay et al, 2011Tingay et al, , 2013, subtle stra�graphic and structural features at either the field-scale (Almasgari et al, 2020;Babkir et al, 2022;Hou et al, 2008) or the regional-scale (Alqahtani et al, 2015(Alqahtani et al, , 2017Miall, 2002) and the emerging basement hydrocarbon play (Madon et al, 2020). The only recent regional reassessment of the geological structure is that of Mansor et al (2014), who used insights from the interpreta�on of deep (8 s TWT) regional 2D lines to describe the basement structure and fault paterns.…”

Automated Fault Detection and Extraction under Gas Chimneys Using Hybrid Discontinuity Attributes

“…Geologically and seismically, it represents a layer cake model with compressive anticlinal inversion structures. This is one of the deepest (12 KMs at center) basins in SE Asia and is highly petroliferous and has already witnessed an extensive hydrocarbon exploration and production [15][16][17][18][19][20]. Keeping this context in view, this study has been carried out to device efficient and optimized techniques to understand the structural framework better.…”