An integrated approach to evaluate the unconventional hydrocarbon generation potential of the Lower Goru Formation (Cretaceous) in Southern Lower Indus basin, Pakistan

2021 ◽  
Vol 130 (2) ◽  
Author(s):  
Muhsan Ehsan ◽  
Hanming Gu ◽  
Abid Ali ◽  
Malik Muhammad Akhtar ◽  
Saiq Shakeel Abbasi ◽  
...  
Keyword(s):  
Integrated Approach ◽  
Indus Basin ◽  
Hydrocarbon Generation ◽  
Hydrocarbon Generation Potential ◽  
Lower Indus Basin ◽  
Lower Goru Formation

scholarly journals Integration of the outcrop and subsurface geochemical data: implications for the hydrocarbon source rock evaluation in the Lower Indus Basin, Pakistan

2018 ◽  
Vol 9 (2) ◽  
pp. 937-951 ◽  
Author(s):  
Sajjad Ahmad ◽  
Faizan Ahmad ◽  
Abd Ullah ◽  
Muhammad Eisa ◽  
Farman Ullah ◽  
...  
Keyword(s):  
Organic Matter ◽  
Source Rock ◽  
Vitrinite Reflectance ◽  
Indus Basin ◽  
Hydrocarbon Generation ◽  
Type Ii ◽  
Hydrocarbon Source Rock ◽  
Hydrocarbon Generation Potential ◽  
Well Data

Abstract The present study details the hydrocarbon source rock geochemistry and organic petrography of the outcrop and subsurface samples of the Middle Jurassic Chiltan Formation and the Lower Cretaceous Sembar Formation from the Sann #1 well Central and Southern Indus Basin, Pakistan. The total organic carbon (TOC), Rock–Eval pyrolysis, vitrinite reflectance (Ro) % and Maceral analysis techniques were used and various geochemical plots were constructed to know the quality of source rock, type of kerogen, level of maturity and migration history of the hydrocarbons. The outcrop and Sann #1 well data on the Sembar Formation reveals poor, fair, good and very good quality of the TOC, type II–III kerogen, immature–mature organic matter and an indigenous hydrocarbon generation potential. The outcrop and Sann #1 well data on the Chiltan Formation show a poor–good quality of TOC, type II–III kerogen, immature–mature source rock quality and having an indigenous hydrocarbon generation potential. The vitrinite reflectance [Ro (%)] values and Maceral types [fluorescent amorphous organic matter, exinite, alginite and inertnite] demonstrate that maturity in both Sembar and the Chiltan formation at surface and subsurface fall in the oil and gas generation zone to cracking of oil to gas condensate zone. Recurrence of organic rich and poor intervals within the Sembar and Chiltan formation are controlled by the Late Jurassic thermal uplift preceding the Indo-Madagascar separation from the Afro-Arabian Plate and Early Cretaceous local transgressive–regressive cycles. From the current study, it is concluded that both Sembar and Chiltan formation can act as a potential hydrocarbon source rock in the study area.

scholarly journals Optimization of hydraulic fracturing treatment in tight sand reservoir of lower indus basin: an integrated approach

2021 ◽  
Author(s):  
Faizan Ali ◽  
Muhammad Hassaan Chaudhry ◽  
Muhammad Arqam Khan ◽  
Qazi Ismail Ahmed
Keyword(s):  
Hydraulic Fracturing ◽  
Simulation Model ◽  
Reservoir Simulation ◽  
Economic Model ◽  
Integrated Approach ◽  
Indus Basin ◽  
Fractured Reservoir ◽  
Lower Indus Basin ◽  
Reservoir Simulation Model ◽  
Fracture Growth

AbstractAn approach for post-frac production profiling has been presented in this study by integrating a fracture model with a reservoir simulation model for a well drilled in tight sand reservoir of Lower Indus Basin in Pakistan. The presented integrated approach couples the output from the fracture growth model with a reservoir simulation model to effectively predict the behavior of a fractured reservoir. Optimization of hydraulic fracturing was done efficiently through the work presented in this study. The integrated model was used to perform various sensitivities. The production profiles obtained for each case were subsequently used to determine the most profitable case, using an economic model.

Identification of Hydrocarbon Potential of Talhar Shale: Member of Lower Goru Formation Using Well Logs Derived Parameters, Southern Lower Indus Basin, Pakistan

2017 ◽  
Vol 29 (3) ◽  
pp. 587-593 ◽  
Author(s):  
Muhsan Ehsan ◽  
Hanming Gu ◽  
Malik Muhammad Akhtar ◽  
Saiq Shakeel Abbasi ◽  
Zaheen Ullah
Keyword(s):  
Well Logs ◽  
Indus Basin ◽  
Hydrocarbon Potential ◽  
Lower Indus Basin ◽  
Lower Goru Formation

scholarly journals Smectite illitization of the Talhar shale, Lower Goru Formation, Southern Indus Basin, Pakistan

2021 ◽  
Vol 11 (6) ◽  
pp. 2315-2325
Author(s):  
Asghar Ali ◽  
Muhammad Salman ◽  
Rafique Ahmad
Keyword(s):  
Shale Gas ◽  
Indus Basin ◽  
Elemental Content ◽  
Depth Range ◽  
Fine Grained ◽  
Depth Data ◽  
Lower Indus Basin ◽  
Quantitative Analyses ◽  
Lower Goru Formation ◽  
Depth Ranges

AbstractSubsurface samples of the Talhar shale, Lower Goru Formation, are analyzed for smectite (montmorillonite) and illite in the Nur-dep#1 (ND‒1), well 2, Southern Lower Indus Basin, Pakistan. The ND‒1, well 2 is an unsuccessful well drilled by the OGDCL, Pakistan, for the shale gas exploration. Illitization and elemental content constrained using XRD qualitative and XRF quantitative analyses, respectively. The illite content increases from 15 to 55% with increasing depth. The fine-grained shale comprises chlorite, kaolinite, halloysite, allophane, muscovite, microcline, illite and montmorillonite. Chlorite was observed at 3450–3452 m, whereas kaolinite is present at depth range of 3450–3482 m. The mix layer expandability decreases from 40 to 20% at depth ranges from 3450 to 3552 m, respectively. The interstratification is random to ordered. Potassium and silicon contents with respect to aluminum and calcium are increasing with depth. Data obtained in this research indicate that the shale gas is immature and the oil is an early–medium stage of maturation.

scholarly journals Porosity Distribution and Differentiation of Different Types of Fluids in Reservoir of Sawan Gas Field, Lower Indus Basin, Pakistan

2019 ◽  
Vol 3 (1) ◽  
pp. 28-37
Author(s):  
M. Asad ◽  
H.U. Rahim
Keyword(s):  
Acoustic Impedance ◽  
Reservoir Characterization ◽  
Three Dimensional ◽  
Seismic Inversion ◽  
Indus Basin ◽  
Gas Field ◽  
Porosity Distribution ◽  
Lower Indus Basin ◽  
Seismic Reservoir ◽  
Lower Goru Formation

AbstractThe lower Indus basin is one of the prolific basins in Pakistan in which the C-interval of lower Goru formation act as a reservoir. With the help of petrophysical interpretation production zone is recognized and also porosity is calculated at the reservoir level. Through porosity we are able to calculate Ksat. A model based inversion of 2D seismic inversion was performed to ascertain three dimensional dispersion of acoustic impedance in the investigation zone and we have recognized new areas where porosity distribution is maximum and site which is suitable for new well. Porosity and Acoustic impedance are typically contrarily relative to each other. Presently porosity can be anticipated in seismic reservoir characterization by utilizing acoustic impedance from seismic inversion far from well position.

Seismic and well log driven structural and petrophysical analysis of the Lower Goru Formation in the Lower Indus Basin, Pakistan

2015 ◽  
Vol 20 (1) ◽  
pp. 57-75 ◽  
Author(s):  
Muhammad Naeem ◽  
Muhammad Kamran Jafri ◽  
Sayed S. R. Moustafa ◽  
Nassir S. AL-Arifi ◽  
Shazia Asim ◽  
...  
Keyword(s):  
Indus Basin ◽  
Well Log ◽  
Petrophysical Analysis ◽  
Lower Indus Basin ◽  
Lower Goru Formation

scholarly journals Evaluation of Gas Potential in Early Cretaceous Shale Lower Indus Basin, Pakistan

2020 ◽  
Vol 11 (1) ◽  
pp. 123-129
Author(s):  
Bilal Ahmed ◽  
Mohibullah Mohibullah ◽  
Sadiq Jalal ◽  
Shabeer Ahmed Abbasi ◽  
Abdul Salam Khan ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Vitrinite Reflectance ◽  
Empirical Relation ◽  
Indus Basin ◽  
Peak Oil ◽  
Gas Generation ◽  
Geochemical Parameters ◽  
Lower Indus Basin ◽  
Lower Goru Formation ◽  
Gas Potential

The shale gas potential of the early Cretaceous Talhar shale member of the lower Goru Formation in lower Indus basin of Sanghar district, Sindh province, has been evaluated using 2D seismic and well logs data. Graphical and empirical techniques were applied to calculate various geochemical parameters for the evaluation of shale plays. Total Organic Carbon (TOC) is calculated by Passey's (∆LogR) Overlay technique and its values are about 2.44 wt.%. Vitrinite Reflectance (Ro) is estimated by graphical and empirical relation and the value lies between 0.95-1.0 which implies that the Talhar shale member is in peak oil and initial gas generation phase. Log-derived Maturity Index (LMI) is calculated by NPHI, RHOB or density log and uranium logs. The average value is about 0.55 which reflects that the formation is probably in the initial maturation phase. Kerogen Volume (Vk) is estimated by empirical relation using RHOB log as input and it is about 13 wt. % which reflects that the formation has enough potential of oil/gas expulsion. The results are compared and validated with a study of the adjacent field of the same basin. This study reveals that Talhar member of lower Goru Formation could be the future probable potential unconventional reservoir for exploration in lower Indus basin of Pakistan.

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