Structural styles, hydrocarbon prospects, and potential of Miano and Kadanwari fields, Central Indus Basin, Pakistan

Jadoon, Saif-Ur-Rehman K.; Ding, Lin; Ehsan, Siddique Akhtar; Jadoon, Ishtiaq A. K.; Idrees, Muhammad

doi:10.1007/s12517-020-5122-5

Cited by 7 publications

(1 citation statement)

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“…The occurrence of ophiolites on the western slope of this belt suggests the existence of an active plate boundary in the past, which is further confirmed by seismic activity. Mafic to ultramafic rocks are the dominant rock types along this active plate boundary, according to Jadoon et al [17]. The region being studied, located south of the Central Indus Basin (Figure 1), contains preexisting normal faults oriented in a NW-SE direction that runs parallel to the Jacobabad highs and disrupts the foredeep region.…”

Section: Tectonics Geology and Stratigraphy Of The Study Areamentioning

confidence: 86%

Estimating Total Organic Carbon (TOC) Content and Porosity of the Ranikot Formation in the Central Indus Basin, Pakistan, Using Seismic Inversion and Well Log Analysis

Ehsan,

Zaheer,

Abbasi

2024

Journal of GeoEnergy

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An approach is proposed to improve modeling for shale gas reservoirs, integrating key parameters such as total organic carbon (TOC) and porosity. Seismic inversion uses seismic reflection data and well-log information to improve geological and geophysical interpretation and estimate rock properties with high-resolution subsurface acoustic impedance, including low and high frequencies. The Ranikot Formation in the Central Indus Basin, Pakistan, is a Paleocene-age formation with the potential to act as reservoir, seal, and source rock. The porosity of the Lower Ranikot reservoir in the Mehar Block was calculated using seismic inversion analysis with the Mehar-02 well. The petrophysical analysis yielded an effective porosity of 5.8%. Similarly, when calculated using seismic inversion, the porosity fell within the 5.5%–6.0% range. Determining the TOC content is crucial in evaluating unconventional shale resources. Petrophysical approaches, such as the ΔlogR method, offer a fast, convenient, and cost-effective means of estimating TOC from well logs. This method is commonly used in conventional source rock evaluation and applied to unconventional resource play evaluation. On the other hand, seismic inversion techniques were used to conduct TOC analysis in the absence of core data in order to estimate the source potential of the Upper Ranikot Formation. To estimate the TOC log for the Upper Ranikot shales in the Mehar Block, the Passey equation was used on the well logs of the Mehar-02 well. The estimated TOC for the Upper Ranikot shales is around 2.0%, which falls within the fair TOC range.

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Section: Tectonics Geology and Stratigraphy Of The Study Areamentioning

confidence: 86%