Development of Carbonate Buildups and Reservoir Architecture of Miocene Carbonate Platforms, Central Luconia, Offshore Sarawak, Malaysia

2017 ◽  
Author(s):  
Hammad Tariq Janjuhah ◽  
Ahmed Mohammad Ahmed Salim ◽  
Mohammad Yamin Ali ◽  
Deva Prasad Ghosh ◽  
Meor Hakif Amir Hassan
Keyword(s):  
Carbonate Platforms ◽  
Reservoir Architecture ◽  
Carbonate Buildups ◽  
Central Luconia

Mississippian Carbonate Buildups and Development of Cool-Waterlike Carbonate Platforms in the Illinois Basin, Midcontinent U.S.A.

2010 ◽  
pp. 69-95 ◽  
Author(s):  
Zakaria Lasemi ◽  
Rodney D. Norby ◽  
John E. Utgaard ◽  
William R. Ferry ◽  
Roger J. Cuffey ◽  
...  
Keyword(s):  
Illinois Basin ◽  
Carbonate Platforms ◽  
Carbonate Buildups

scholarly journals Application of Spectral Decomposition Technique to Delineate the Evolution of Karst on Carbonate Platforms of Central Luconia, Offshore Sarawak, Malaysia

2021 ◽  
Vol 11 (24) ◽  
pp. 11627
Author(s):  
Siti Sarah Ab Rahman ◽  
Maman Hermana Husen ◽  
Grisel Jimenez Soto ◽  
Saw Bing Bing ◽  
Nur Huda M Jamin ◽  
...  
Keyword(s):  
Spectral Decomposition ◽  
Quantitative Description ◽  
Seismic Interpretation ◽  
Drilling Process ◽  
3D Seismic ◽  
Carbonate Platforms ◽  
Thin Sections ◽  
Time Frequency ◽  
Platform Margin ◽  
Central Luconia

Karstification in carbonate platforms of the Miocene age in Central Luconia province, offshore Sarawak, Malaysia, has been discussed since the onset of exploration and initial discoveries in the region, with over 200 mapped platforms to date. An extensive drilling program over the last decade confirmed the existence of karst during the drilling process where issues such as total loss circulation and bit drops were common. Karst in Central Luconia has been proposed by several authors; however, detailed quantitative description of the observed features have not yet been conducted. This study involves systematic mapping of loss circulation depths, chalkified/rubble/vuggy zones described from cores, and vugs of >2 mm in size and moldic porosity observed on thin sections of the Jintan platform. These data supplement the interpretation of karst from multiple 3D seismic attributes. Seismic interpretation of the Jintan and M1 platforms revealed an extensive dendritic pattern which is on average 70–100 m deep and 3–5 km long, and circular geobodies of 1 km in width that exist on the upper part of the platform. Spectral decomposition, also known as time-frequency analysis, was used to enhance the interpretation of karst features on seismics within a specific wavelength. In this study, a comparison of three spectral decomposition methods applied on the 3D seismic cube of the Jintan and M1 platforms was undertaken to determine the method which allowed for better delineation of the karst features. The results show that the short-time Fourier transform (STFT) method using frequencies of 46, 54, and 60 Hz delineated most of the karst features compared to the continuous wavelet transform (CWT) Morlet and CWT Ricker wavelet methods. This paper aims to discuss the dimensions, evolution and geometry of the karst features quantitatively on three selected karst horizons named “K1”, “K2”, “K3”. Interpretation revealed that the dendritic karst features were found to be most prominent on the K2 horizon which lies below a conspicuous change of the external geomorphology of the platform. Backstepping of the platform margin by 12 km is observed in both platforms. Quantitative seismic interpretation shows that the karst observed in M1 platform is approximately 70–100 m deep, and the dendritic features are around 1–2 km in length and approximately 500 m wide; whereas, in the Jintan platform the dendritic features observed are up to 5 km in length with several 1 km wide circular/sinkhole features. More than 20 dendritic features orientated SE and NS were mapped mainly in the transitional area as well as the center of both platforms. The nature of the karst morphology in Central Luconia remains controversial; however, it is proposed to be of mixing zone karst origin.

Assessing Controls on Isolated Carbonate Platform Development in Central Luconia, NW Borneo, from a Regional 3D Seismic Facies and Geomorphology Investigation

2020 ◽  
pp. SP509-2019-89
Author(s):  
K. K. Ting ◽  
Y. E. Tan ◽  
E. Chiew ◽  
E. L. Lee ◽  
A. N. Azudin ◽  
...  
Keyword(s):  
Late Miocene ◽  
Carbonate Platform ◽  
Seismic Facies ◽  
Carbonate Platforms ◽  
Intrinsic Factors ◽  
Sea Level Fluctuations ◽  
The North ◽  
Architectural Development ◽  
Central Luconia ◽  
Wind Driven Currents

AbstractThe Central Luconia province in the South China Sea, offshore Sarawak, features extensive development of Middle to Late Miocene isolated carbonate platforms. This study presents a regional seismic architecture - seismic facies review of platform flank geometries and off-platform depositional styles, with the goals of understanding their patterns and exploring the controlling processes. The information on flank steepness and predominant shedding direction is contextualized with respect to extrinsic and intrinsic factors of carbonate platform growth, including tectonics, eustatic sea level fluctuations, hydrodynamics and regional paleogeography. Results reveal that flank geometries are consistent throughout the Middle to Late Miocene. In the north of the province eastern flanks are dominantly aggradational, steep, and sediment-starved escarpments, whereas western flanks show more progradation and are accretionary in nature. Discrepancies from this pattern are observed among closely spaced platforms. The eastern aggrading flanks are interpreted to have been highly influenced by monsoonal wind driven currents. Further south in the province tidal currents, antecedent topography and syn-depositional tectonics were more important controls on platform architectural development. This study of regional processes and geomorphic products provides a basis for enhanced conceptual facies models and reservoir quality predictions.

Microfacies and Depositional Environments of Miocene Isolated Carbonate Platforms from Central Luconia, Offshore Sarawak, Malaysia

2017 ◽  
Vol 91 (5) ◽  
pp. 1778-1796 ◽  
Author(s):  
Hammad Tariq JANJUHAH ◽  
José Antonio GÁMEZ VINTANED ◽  
Ahmed Mohamed Ahmed SALIM ◽  
Ibrahima FAYE ◽  
Mumtaz Muhammad SHAH ◽  
...  
Keyword(s):  
Depositional Environments ◽  
Carbonate Platforms ◽  
Central Luconia

Quantifying Carbonate Heterogeneities that Impact Flow in Reservoirs: Lessons Learned from the Central Luconia Gas Fields, Malaysia

2016 ◽  
Author(s):  
G. M. Warrlich ◽  
A. Ryba ◽  
E. Adams ◽  
T. Tam ◽  
E. C. Chiew ◽  
...  
Keyword(s):  
Lessons Learned ◽  
Central Luconia ◽  
Gas Fields
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