Shale Hydrocarbon Potential of Brown Shale, Central Sumatera Basin Based on Seismic and Well Data Analysis

Haris, Abdul; Almunawwar, Husein Agil; Riyanto, Agus; Bachtiar, Andang

doi:10.1088/1755-1315/62/1/012018

Cited by 12 publications

(8 citation statements)

References 5 publications

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“…This maturity level is classified as the early mature phase. van Krevelen diagram and (b) the relationship between HI and Tmax [13].…”

Section: Geochemical Assessmentmentioning

confidence: 99%

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Unconventional Resources of Shale Hydrocarbon in Sumatra Basin, Indonesia

Haris¹,

Riyanto²,

Seno³

et al. 2018

Shale Gas - New Aspects and Technologies

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Sumatra Basin is the largest hydrocarbon producer in Indonesia, which was produced from North Sumatra, Central Sumatra and South Sumatra Basins. Looking at the large accumulation of hydrocarbons that have been produced from Sumatra Basin, it opens the possibility of hydrocarbon potential, which is trapped in shale source rock. The integrated study, which includes geochemical, geomechanical, petrophysical and geophysical analysis, was performed to assess shale reservoir in Sumatra Basin. The geochemical assessment of the Baong formation of North Sumatra Basin show that the total organic content (TOC) ranges from 2 to 3.5 wt.% and is categorized into fair to very good. The geophysical and geomechanical assessment shows the shale layer is indicated by an acoustic impedance, which is higher than 2490 ft/s*g/cc, with rock strength of 3000 Psi and the brittleness index of 0.48. In Central Sumatra Basin, we assessed Brownshale of Pematang formation. The geochemical analysis shows that the Brownshale has TOC ranges from 0.15 to 2.71 wt.%, which can be categorized into poor to very good. In South Sumatra Basin, we focused on Talang Akar formation (TAF). The geochemical result shows that the TOC ranged from 0.35 to 3.66 wt.% and is categorized into poor to very good.

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“…This maturity level is classified as the early mature phase. van Krevelen diagram and (b) the relationship between HI and Tmax [13].…”

Section: Geochemical Assessmentmentioning

confidence: 99%

“…Shale Gas -New Aspects and Technologies between organic richness and available log data for Pematang Brown Shale formation of Central Sumatra basin is presented in Eq. 6 [13].…”

Section: Predicting Total Organic Content Using Multilinear Regressionmentioning

confidence: 99%

Unconventional Resources of Shale Hydrocarbon in Sumatra Basin, Indonesia

Haris¹,

Riyanto²,

Seno³

et al. 2018

Shale Gas - New Aspects and Technologies

Self Cite

View full text Add to dashboard Cite

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“…The electro log data consists of gamma ray, resistivity, neutrons, density and sonic. This estimated TOC, which is useful to patch the lack of data as function depth, is calculated by applying Multi-linear Regression [3]. The equation 1 is derived an equation from Multi-linear Regression as the function of Gamma Ray (GR), Density (RHOB), Neutron Porosity (NPHI), P-wave velocity (DT):…”

Section: Geochemical and Seismic Attributes Approachmentioning

confidence: 99%

Organic shale analysis using geochemical data and seismic attributes: Case study of Talang Akar formation, South Sumatera Basin

Manaf

Suparno²,

Haris³

et al. 2017

AIP Conference Proceedings

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A case study of hydrocarbon prospect evaluation in north Exito field by using seismic attribute and seismic inversion AIP Conference Proceedings 1862, 030193 (2017) Corresponding author: aharis@sci.ui.ac.idAbstract. Organic shale analysis of Talang Akar Formation, south Sumatera basin has been carried out using integrated seismic attributes, petrophysical and geochemical data. This shale layer has been deposited in sagging phase with low deposition energy at transgression period, which results in abundant shale deposit. The paper is aimed at characterizing the geochemical and petrophysical properties of shale rock formation and mapping their distribution using transformed seismic data into acoustic impedance and Total Organic Carbon (TOC). The assessment of this shale formation is carried out by first analyzing rock physics properties to identify the interest zone of a reservoir. The next step is performing geochemical analysis to quantify TOC and determine the maturity level of the shale formation. In order to map the shale formation distribution, we transform seismic data into acoustic impedance and further into organic-rich shale (TOC) distribution. Our analysis of petrophysical and geochemical properties shows that there are two interest zones, in the depth interval of 2030-2182 m (zone A) and 2204-2396 m (zone B). Both zones are predicted as shale layer that has very good organic richness criteria and fulfills sufficient maturity level. In addition, the shale layer distribution is represented by inverted acoustic impedance and TOC, where we found the consistent information related to identified interest zone A and B, which is indicated by relatively low impedance and relatively high TOC. Further, these two zones (zone A and B) are predicted as the potential sweet spot to be explored as unconventional hydrocarbon resource.

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“…Since the limitation of sample number, therefore we only have a few TOC data, which is not cover for the whole depth. In order to patch the lack of this data, we need to estimate the TOC information as function depth by applying Multilinear Regression [3,4].…”

Section: Shale Hydrocarbon Characterizationmentioning

confidence: 99%

Shale characterization on Barito field, Southeast Kalimantan for shale hydrocarbon exploration

Sumotarto¹,

Haris²,

Riyanto³

et al. 2017

AIP Conference Proceedings

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A case study of hydrocarbon prospect evaluation in north Exito field by using seismic attribute and seismic inversion AIP Conference Proceedings 1862, 030193 (2017) Corresponding author: aharis@sci.ui.ac.idAbstract. Exploration and exploitation in Indonesia now are still focused on conventional hydrocarbon energy than unconventional hydrocarbon energy such as shale gas. Tanjung Formation is a source rock of Barito Basin located in South Kalimantan that potentially as shale hydrocarbon. In this research, integrated methods using geochemical analysis, mineralogy, petrophysical analysis and seismic interpretation has been applied to explore the shale hydrocarbon potential in Barito Field for Tanjung formation. The first step is conducting geochemical and mineralogy analysis to the shale rock sample. Our analysis shows that the organic richness is ranging from 1.26-5.98 wt.% (good to excellent) with the depth of early mature window of 2170 m. The brittleness index is in an average of 0.44-0.56 (less Brittle) and Kerogen type is classified into II/III type that potentially produces oil and gas. The second step is continued by performing petrophysical analysis, which includes Total Organic Carbon (TOC) calculation and brittleness index continuously. The result has been validated with a laboratory measurement that obtained a good correlation. In addition, seismic interpretation based on inverted acoustic impedance is applied to map the distributions of shale hydrocarbon potential. Our interpretation shows that shale hydrocarbon potential is localized in the eastern and southeastern part of the study area.

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Shale Hydrocarbon Potential of Brown Shale, Central Sumatera Basin Based on Seismic and Well Data Analysis

Cited by 12 publications

References 5 publications

Unconventional Resources of Shale Hydrocarbon in Sumatra Basin, Indonesia

Unconventional Resources of Shale Hydrocarbon in Sumatra Basin, Indonesia

Organic shale analysis using geochemical data and seismic attributes: Case study of Talang Akar formation, South Sumatera Basin

Shale characterization on Barito field, Southeast Kalimantan for shale hydrocarbon exploration

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