Petroleum Potentiality and Petrophysical Evaluation of Late Triassic Baluti Formation, Northern Iraq

Wrya Jihad Jabbar Mamaseni; Ali Ismail Al-Juboury; Nagham Omar; Govand Sherwani

Article Details

Petroleum Potentiality and Petrophysical Evaluation of Late Triassic Baluti Formation, Northern Iraq

Authors:

Wrya Jihad Jabbar Mamaseni | Ali Ismail Al-Juboury | Nagham Omar | Govand Sherwani

Publisher:

Iraqi Geologists Union (Union of Iraqi Geologists)

Journal:

The Iraqi Geological Journal Vol.55 Issue 2B, pp.121-138

Document Type:

Article

Publication Date:

8/2022

Document Language:

English

Document ID (Org No.):

2001836155

pISSN:

2663-8754

Keywords:

Abstract:

 Source rock potentiality and reservoir characteristics of the Baluti Formation (Late Triassic), Northern Iraq were examined in order to determine the hydrocarbon generation potential and reservoir properties. A combination of geochemical analyses, stable carbon isotope, 1D-basin modeling and digital log data were used to evaluate the formation. The Total Organic Carbon ratios range from 0.39 to 0.61 wt%, while the quantity of free hydrocarbon and residual hydrocarbon are low (0.05-0.11, 0.40-0.90 mg/g respectively). The average of oxygen index  is 318 mg CO2/g TOC, while the hydrogen index is less than 200 mg HC/g TOC, which indicates type III kerogen. The outcomes of the pristane/phytane and Pr/n-C17 with Ph/n-C18 ratios suggest that the formation was deposited under oxic environment. This conclusion is also supported by trace elemental data. According to the average of Ro% of 0.58 and Tmax of 430.1oC, the formation is in the immature to early mature stage. From a plot of 1D-modeled Ro% versus time, it is inferred that the organic matter of the formation had reached early maturation in the Early Paleocene (63Ma). The Baluti is a waxier formation and the degree of waxiness ranges from 1.99-2.55. Regarding, Triterpanes (Tm/Ts) and regular sterane C27-C29 the studied formation has been deposited in the terrestrial environment with high terrigenous input with hot and arid to semiarid climates. This result is supported by stable carbon isotopic data and clay mineralogy. The porosity of the dolomite beds is 10-15%. Based on the cutoff results, the Baluti Formation has only 1.13m net pay of 72m thickness, which means that the formation has poor porosity and permeability in the reservoir beds.

Article Details

Petroleum Potentiality and Petrophysical Evaluation of Late Triassic Baluti Formation, Northern Iraq

Authors:

Wrya Jihad Jabbar Mamaseni | Ali Ismail Al-Juboury | Nagham Omar | Govand Sherwani

Publisher:

Iraqi Geologists Union (Union of Iraqi Geologists)

Journal:

The Iraqi Geological Journal Vol.55 Issue 2B, pp.121-138

Document Type:

Article

Publication Date:

8/2022

Document Language:

English

Document ID (Org No.):

2001836155

pISSN:

2663-8754

Baluti Formation

Late Triassic

Early mature

Porosity, Iraq

Issues

Article Details

Petroleum Potentiality and Petrophysical Evaluation of Late Triassic Baluti Formation, Northern Iraq

Authors: Wrya Jihad Jabbar Mamaseni | Ali Ismail Al-Juboury | Nagham Omar | Govand Sherwani

Publisher: Iraqi Geologists Union (Union of Iraqi Geologists)

Journal: The Iraqi Geological Journal Vol.55 Issue 2B, pp.121-138

Document Type: Article

Publication Date: 8/2022

Document Language: English

Document ID (Org No.): 2001836155

pISSN: 2663-8754

Baluti Formation

Late Triassic

Early mature

Porosity, Iraq

Issues

Authors:

Wrya Jihad Jabbar Mamaseni | Ali Ismail Al-Juboury | Nagham Omar | Govand Sherwani

Publisher:

Iraqi Geologists Union (Union of Iraqi Geologists)

Journal:

The Iraqi Geological Journal Vol.55 Issue 2B, pp.121-138

Document Type:

Article

Publication Date:

8/2022

Document Language:

English

Document ID (Org No.):

2001836155

pISSN:

2663-8754