Identification of Thin Carbonate Reservoir Facies Through Integrated Seismic Attribute Analysis: A Case Study Of Kuwait

Abstract

Thin-bed carbonate reservoir posing huge exploration challenge, although it has a significant impact on the production proficiency. The horizon based attributes using poststack seismic data depict a qualitative distribution of reservoir facies. Utility of spectral decomposition attribute not only enhances vertical resolution of the seismic thin-bed but encompasses the lateral discontinuity of the seismic facies relating rock properties (Zeng and Marfurt, 2015). The coherency based attribute (Bahorich and Farmer, 1995) improves the understanding of patchy discontinuity for identifying the carbonate reservoir. The mud lean facies of tight carbonate can be identified with the quantifiable physical properties, like low Gamma Ray (GR), high P-wave velocity, density and P-impedance. But the porosity preservation within mud lean carbonate reservoir facies lowered the velocity, density and P-impedance. Thus, seismic inversion has reinforced to identify the porosity preservation within the carbonate deposits. In this study, we have adapted an approach to understand the seismically thinner carbonate reservoir facies to explore the hydrocarbon in Kuwait, waited for long to be established.

AAPG Datapages/Search and Discovery Article #90370 ©2020 AAPG Middle East Region Geoscience Technology Workshop, 3rd Edition Carbonate Reservoirs of the Middle East, Abu Dhabi, UAE, January 28-29, 2020