Seismic based characterization of total organic content from the marine Sembar shale, Lower Indus Basin, Pakistan

Aziz, Omer; Hussain, T.; Ullah, Matee; Bhatti, Asher Samuel; Ali, Aamir

doi:10.1007/s11001-018-9347-6

Cited by 7 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Structural and stratigraphic well correlation is pivotal in mapping the vertical and lateral variation and distribution of a particular formation in terms of variation in thickness and depositional extent (Yilmaz, 2001). Seismic structural and stratigraphic interpretation is quite effective in mapping the accurate depth and lateral extent of a reservoir formation (Rezaee, 2015;Aziz et al, 2018). Seismically derived isochron and isopach mapping integrated with tracking the lateral variation of a seismic signature is effective in resolving the depositional architecture, provenance, seismic terminations, and thickness variation trend of a particular reservoir formation beyond the well control (Toosy et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…One-dimensional maturity modeling of the Sembar Formation suggests that this formation is sufficiently mature to be exploited for its shale gas potential, and it can also charge sand intercalations for a successful petroleum play (Qayyum et al, 2016). Environment of deposition, thermal maturity, mineralogy, and effective reservoir parameters like thickness and porosity proved the Sembar Formation as an ideal prospect for its shale gas potential (Aziz et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…For example, Ali et al (2022) computed the thermal maturity and total organic carbon content for the demarcation of "sweet spot targets" for hydraulic fracturing of the Sembar shale as an unconventional resource. Aziz et al (2018) also computed TOC from both seismic and well logs. Sheikh and Giao (2017) performed a comprehensive study on shale gas potential for the Sembar Formation shale, using primary data for geochemical analysis through rock eval pyrolysis, burial history plots, petroleum system modeling, volumetric estimation, and computation of retained gas in the shale.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel gas sands characterization and improved depositional modeling of the Cretaceous Sembar Formation, Lower Indus Basin, Pakistan

et al. 2022

View full text Add to dashboard Cite

The Lower Indus Basin of Pakistan has substantial hydrocarbon potential with the Cretaceous Sembar Formation as its principal source rock. While studies have identified the shale gas potential of the Sembar Formation, no extensive research has been conducted to evaluate the hydrocarbon potential of thick packages of sands encountered within it. This study is intended to fill this research gap by identifying the hidden-untapped thick packages of sands of the Sembar Formation for the first time in the Khewari and Gambat areas. We use well log and seismic reflection data to define the thickness, depth distribution, and petrophysical properties for reservoir characterization. This integrated modeling identifies favorable zones for gas production and the spatial distribution of sand packages with excellent reservoir properties in thickness (≈200 m), almost continuous sand packages suitable for hydrocarbon exploration. The Suleman-01 well has a very good hydrocarbon reservoir potential with 70% sand volume, approximately 13% effective porosity, 3.57 millidarcys average permeability, and approximately 58–60% hydrocarbon saturation. We suggest that the post-collisional tectonics of the Indian and Eurasian plates affected the depositional geometry of the Sembar Formation in such a way that it trends from shallower to deeper from western to eastern parts of the study area. Similarly, reservoir quality sands follow the positive upward trend from west to east toward the Indian shield. We propose that the approach implemented in this study is applicable to the entire Lower Indus Basin and further toward the Rajasthan Basin in India in the east and Zagros fold-and-thrust belt in Iran in the west. This approach would help assess the undeveloped hydrocarbon potential of the Sembar Formation sands and related formations in South Asia and worldwide.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A novel gas sands characterization and improved depositional modeling of the Cretaceous Sembar Formation, Lower Indus Basin, Pakistan

et al. 2022

View full text Add to dashboard Cite

show abstract

“…These rivers played a significant role to feed the deltas along the edge of the Indo‐Tethyan Ocean (Biswas, 1999; Mukherjee, 1983). Throughout the Lower Cretaceous epoch, elevated areas and local highs contributed sedimentary deposits to the basins in western India as well as the Indus Basin, extending into present‐day Pakistan (Figure 12; after Aziz et al, 2018; Beaumont et al, 2019, 2023; Bhatt et al, 2016; Biswas, 1999; Bladon et al, 2015; Dolson et al, 2015; Imraz et al, 2013). Most researchers believed that sediments of the WIRBs are mostly sourced from the ADFB and other palaeohighs situated to the north and east of the basinal area (Figure 12; Ahmad & Akhtar, 1990; Akhtar & Aquil, 1984; Biswas, 1987; Beaumont et al, 2019, 2023; Chaudhuri, Das, et al, 2020; Chaudhuri et al, 2023).…”

Section: Discussionmentioning

confidence: 99%

“…Blue dashes separate the political boundary. Data on the western side of the political boundary are from Imraz et al (2013) and Aziz et al (2018).…”

Section: Source Compositionmentioning

confidence: 99%

Tracing source and palaeo‐weathering conditions of quartzose sandstone in the Cretaceous Cambay Basin: A combined petrographical, geochemical and geochronological approach

Rajak,

Prabhakar,

Banerjee

2023

Geological Journal

View full text Add to dashboard Cite

Based on detrital monazite dating, mineral chemistry of tourmaline and rutile, bulk rock geochemistry, modal analysis of petrographic and palaeocurrent data, this study tracks the source of quartzose sandstone within the Cretaceous succession of the Cambay Basin primarily to rocks within the Aravalli‐Delhi Fold Belt. Monazite geochronology shows predominant peaks around 506 ± 11 Ma, 905 ± 12 Ma and a minor peak at 750 ± 20 Ma, 1485 ± 30 Ma relating sediment sources to the Aravalli‐Delhi orogeny and Pan‐African orogeny. The petrographic modal analysis of the moderate‐to‐well‐sorted Himmatnagar Sandstone indicates at least 91% quartz, with minor feldspar and rock fragments. The mineral chemistry of tourmalines in Himmatnagar Sandstone matches with Li‐ and Ca‐poor granitoid, pegmatites, metapelites and quartz tourmaline rocks. The trace element content of rutiles in sandstones corresponds to metapelitic sources. Detrital monazite dates and mineral chemistry of tourmalines and rutiles pinpoint the sediment source to the South Delhi Supergroup of rocks. The dominance of rounded zircons and tourmalines and abraded quartz overgrowth in the Himmatnagar Sandstone indicate the recycling of sediments, possibly from the Marwar Supergroup. Palaeoclimatic proxies based on mineralogy and geochemistry, particularly, the high value (93–97) of mineralogical index alteration, indicate intense chemical weathering of the source rocks under humid climatic conditions. Therefore, the combination of factors, including the quartzo‐feldspathic source rocks, intense chemical weathering under humid climatic conditions and the recycling of sediments facilitated the formation of quartzose sandstone within the Himmatngar Sandstone in the Cambay Basin.

show abstract

Classification of Well Log Data Using Vanishing Component Analysis

Hayat

Ali

Murtaza

et al. 2019

Pure Appl. Geophys.

View full text Add to dashboard Cite

Seismic based characterization of total organic content from the marine Sembar shale, Lower Indus Basin, Pakistan

Cited by 7 publications

References 17 publications

A novel gas sands characterization and improved depositional modeling of the Cretaceous Sembar Formation, Lower Indus Basin, Pakistan

A novel gas sands characterization and improved depositional modeling of the Cretaceous Sembar Formation, Lower Indus Basin, Pakistan

Tracing source and palaeo‐weathering conditions of quartzose sandstone in the Cretaceous Cambay Basin: A combined petrographical, geochemical and geochronological approach

Classification of Well Log Data Using Vanishing Component Analysis

Contact Info

Product

Resources

About