Basement Tectonics and Shear Zones in Cauvery Basin (India): Implications in Hydrocarbon Exploration

Mazumder, Subhobroto; Tep, Blecy; Pangtey, Krishan Kumar Singh; Mitra, D. S.

doi:10.1007/978-3-319-99341-6_9

Cited by 10 publications

(10 citation statements)

References 41 publications

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“…The Palar Basin is located between the Krishna-Godavari Basin and the Cauvery Basin, with its northern part extending to the offshore. This half crescent shaped basin is bordered in the north by the Nayudupeta High and in the south by the Chingleput High (Mazumder et al, 2013;Prakash et al, 2018;Mazumder et al, 2019). The Palar Basin is dissected into a northern and a southern part by a broadly E-W oriented subsurface ridge, which is considered to have resulted from a post-rift compression.…”

Section: Eastern Continental Margin Of Indiamentioning

confidence: 99%

“…Subsurface mapping carried out in the Cauvery Basin indicate that the Vedaranyam-Tiruchirapalli and the Madurai-Rameswaram trends cut across the general NE-SW trending horstgraben structures of the Cauvery Basin (Twinkle et al, 2016). Consequently, the Cauvery Basin is considered to have undergone three major episodes of tectonism that governed the development of basement structures consisting of three major N-S, NE-SW and NW-SE trending faults during three different phases (Mazumder et al, 2019).…”

Section: Eastern Continental Margin Of Indiamentioning

confidence: 99%

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Structure and tectonics of the continental margins of India and the adjacent deep ocean basins: current status of knowledge and some unresolved problems

Yatheesh

2020

Episodes

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March 2020 586 The Indian Ocean and the bordering continental margins are characterized by a number of tectonic features consisting of deep ocean basins, aseismic ridges/ submarine plateaus and seamounts. Marine geophysical studies carried out over these regions for the past four decades have led to an increased understanding of the formation and evolution of these features. The present paper synthesizes an up-to-date compilation of the results of the salient inferences of those studies to describe the structure and tectonic evolution of these features as well as the Indian Ocean in general. A review of the existing knowledge on the structure and tectonics of the continental margins of India and the adjacent ocean basins reveal the existence of several unresolved problems, primarily due to the inherent tectonic complexities or the paucity of adequate data. Some of the major problems that need to be addressed/examined are: the existence and extent of the Prathap and Kori-Comorin ridges; the locations of the continent-ocean boundaries around the continental margins of India; the timing of formation of the deep offshore regions adjacent to the Indian continental margins; the deeper crustal structure and trend of the 85°E Ridge; the crustal configuration as well as the extent of the postulated micro-continental slivers; and the cause of intense seismicity over the Chagos Bank segment of the Laccadive-Chagos Ridge. In addition to addressing these questions, the present paper suggests ways to go forward by acquiring high-resolution and deep penetration multichannel seismic reflection data, seismic refraction data using Ocean Bottom Seismometers (OBS) and closely spaced sea-surface and deep-tow magnetic profiles along with high-resolution seafloor mapping.

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Section: Eastern Continental Margin Of Indiamentioning

confidence: 99%

Section: Eastern Continental Margin Of Indiamentioning

confidence: 99%

Structure and tectonics of the continental margins of India and the adjacent deep ocean basins: current status of knowledge and some unresolved problems

Yatheesh

2020

Episodes

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“…The Cauvery Basin covers ~ 50,000 sq km of the area from the onshore to offshore (up to 2000 m bathymetry) and preserves 3-6 km of sediment thickness. The geological history of this basin began with the rejuvenation of rifting during the Late Jurassic-Early Cretaceous period between the East Indian margin and Antarctica along the dextral transfer Coromondal fault zone (Sastri et al 1981;Biswas et al 1993;Nemčok et al 2013;Mazumder et al 2019). This significant tectonic event resulted in the formation of synrift structures in the present-day deep-water Cauvery-Palar Basins (Chakraborty and Sarkar 2018).…”

Section: Generalized Stratigraphy Of the Basinmentioning

confidence: 99%

“…On the other side, the northern sub-basins such as Tranquebar, Tanjore, Nagapattinam and Ariyalur-Pondicherry (Fig. 1) went through the initial stage of formation as a result of shear coupling and rifting, which resulted in basin deepening and hence led to initial marine incursion (Sastri et al 1973;Chetty and Rao 2006;Mazumder et al 2019). The tectonically controlled Cauvery Basin preserves a complete sequence of Late Jurassic to Early Cretaceous sediments, which continued till the end of the Tertiary (Fig.…”

Section: Generalized Stratigraphy Of the Basinmentioning

confidence: 99%

Post-drill geophysical characterization of two deep-water wells of Cauvery Basin, East Coast of India

Mishra¹,

Patidar

2022

J Petrol Explor Prod Technol

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The depth of the reservoir causes an increase in the degree of uncertainty in the prediction of reservoir quality. High frequency is suppressed with depth because Earth functions as a low-pass filter. The seismic amplitudes observed at various interfaces are influenced by spherical divergence, transmission losses, mode conversions, and inter-bed multiples. Seismic data have numerous essential components that must be thoroughly examined during hydrocarbon prospect identification and maturation, including post-critical reflections, events coherency (in near and far offsets), mode conversion, and interbed multiples. Seismic amplitudes are typically derived from 2D/3D seismic data and utilized directly or indirectly for reservoir interpretation and better prediction of subtle geological and geophysical information. To accurately depict subsurface geological features, stratigraphic architecture, and reservoir facies, it should be used in conjunction with the existing paleoenvironment data. When employed alone, the subsurface geophysical data may lead to erroneous interpretation of subsurface lithologies and inaccurate reservoir property predictions. Understanding these factors could help interpreters make better use of seismic data while maturing and de-risking the prospectivity. This study examines the post-drill geophysical characterization of two exploratory wells that were drilled in the deep-water area of the Cauvery Basin, East Coast of India. Analysis and correlation with a discovery well is done to understand the sediment depositional heterogeneity and corresponding seismic amplitude response, primarily for the cemented reservoir (dry well). To discover prospects and subsequently de-risk the existing prospect inventory, a dashboard checklist for in-depth study of seismic and well data has been developed. The top-down geophysical analytical approach that has been presented will aid in defining reservoir characteristics generally, estimating deliverability, and subsequently raising the geological probabilities and chance of success (COS) of any exploration project. The findings of this study allow critical analysis of seismic data to distinguish between softer/slower/possibly better reservoir rocks and hard/fast/tight rocks.

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“…Figure 3 shows the map of the Cauvery basin in SE India. Furthermore, Cauvery basin is a fault rift basin and holds signi cant reserves of oil and gas to a larger area (Mazumder et al 2019). This basin almost encompasses 25000 km 2 area and originated during the Late Jurassic to Early Cretaceous splitting of the Archean Indian basement and Australia-Antarctica plates (Dasgupta 2019;Veevers and Tewari 1995).…”

Section: Geological Settings Of Neyveli Lignite Fieldmentioning

confidence: 99%

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

Rajkumar

Antony

Mahalingam³

et al. 2020

Preprint

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A laboratory based investigation has been conducted on permeability damage and CO2 storage or retention in the lignite core during alternative injection of brine and supercritical carbon dioxide. Moreover, anthracite and bituminous coal beds were focused by the scientific community for effective production and reservoir formation damage study. But, now-a-days, lignite based coal bed methane reservoirs have attracted attention for productive exploitation and formation collapse investigation. Hence, for this purpose, a single component injection two phase (Brine + Supercritical CO2) coreflood test analysis under alternative injections were performed to investigate the occurrence of lignite structural collapse, permeability damage, injectivity decline and CO2 retention as well. The experimental study reveals that, due to gravity segregation there is a high rate of fluid saturation in lignite core and also, moderate level of heat transfer coefficient was also noted. Also, lignite core structural collapse under the brine and supercritical CO2 injection at different velocities resulted in huge volume of coal and kaolinite fines concentration. Kaolinite and coal fines migration resulted in pressure change and permeability decline in lignite core. The suspensions produced were passed to microstructural analysis and it revealed that kaolinite fine particle tends to possess a leaflet geometrical structure, which obstructed the cleats and restricted the fluid flow. Subsequently, hysteresis modelling (Pranesh 2018) was applied to this problem to quantify the amount of CO2 retention in lignite core. Additionally, statistical model, multiple linear regression was applied to this problem to validate the experimental model, which showed good agreement.

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Basement Tectonics and Shear Zones in Cauvery Basin (India): Implications in Hydrocarbon Exploration

Cited by 10 publications

References 41 publications

Structure and tectonics of the continental margins of India and the adjacent deep ocean basins: current status of knowledge and some unresolved problems

Structure and tectonics of the continental margins of India and the adjacent deep ocean basins: current status of knowledge and some unresolved problems

Post-drill geophysical characterization of two deep-water wells of Cauvery Basin, East Coast of India

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

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