2D structural modelling and hydrocarbon potentiality of the Sitakund structure, Chittagong Tripura Fold Belt, Bengal Basin, Bangladesh

Abdullah, Rashed; Yeasmin, Rumana; Ameen, S.M. Mahbubul; Khanam, Farida; Bari, Zahidul

doi:10.1007/s12594-015-0266-8

Cited by 15 publications

(7 citation statements)

References 7 publications

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“…They assert that compression of under-compacted shale units promotes incipient diapirism, citing Sikder (1998) for evidence of possible diapirism in the area. Abdullah et al (2015) use the same well log data but interpret the décollement surface to be just below the base of the well at ∼4 km and within "pre-Miocene sediments" below the Bhuban Formation. They also infer that the décollement is locally folded due to deeper incipient diapirism.…”

Section: Décollement Depthmentioning

confidence: 99%

“…Data sources are: Abdullah et al. (2015) (L24), Islam and Habib (2015) (L7, W2), Imam and Hussain (2002) (L6), Kabir and Hossain (2009) (L8), Lohmann (1995) (L5, L9), Maurin and Rangin (2009) (L25, L27), Murphy (1988) (L2, L4), Najman et al. (2012) (L1, L16, L17, L18, L22, L26, and L28), Najman et al.…”

Section: Velocity Analysismentioning

confidence: 99%

“…Abdullah et al. (2015) use the same well log data but interpret the décollement surface to be just below the base of the well at ∼4 km and within “pre‐Miocene sediments” below the Bhuban Formation. They also infer that the décollement is locally folded due to deeper incipient diapirism.…”

Section: Geologic Settingmentioning

confidence: 99%

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Geometry of the Décollement Below Eastern Bangladesh and Implications for Seismic Hazard

et al. 2021

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Section: Décollement Depthmentioning

confidence: 99%

Section: Velocity Analysismentioning

confidence: 99%

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Geometry of the Décollement Below Eastern Bangladesh and Implications for Seismic Hazard

et al. 2021

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“…Geological map (right) of the Sitakund anticline is showing the generalized NNW-SSE axial trend with a major thrust fault verging west[15].…”

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confidence: 99%

A Review on Hydrocarbon Prospectivity in Chittagong Hill Tracts and Adjacent Area

Islam¹,

Lupin²

2020

OJG

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Bangladesh is a country with limited sources of energy and since 1990 natural gas has been its main source of energy. Most of the exploration approaches had been conducted onshore especially in the central and eastern part of Bangladesh, particularly in northeastern Sylhet basin. Among the hydrocarbon provinces, the East Delta Hill Tract province is an under explored petroleum province in Bangladesh. An exploratory well drilled in Sitakund anticline was found dry but no reasonable cause was perceived why that well went dry. Although many works had been carried out in Chittagong Hill Tracts but none of them was cumulative and descriptive. In this study, the overall hydrocarbon prospect of the Chittagong Hill Tracts was analyzed by mapping of potential zones on the basis of the evaluation of regional structure and construction of lithocolumn of the prospective zones. The five elements of the petroleum system discussed thoroughly to find overall petroleum prospect of the study area. Source rocks of Chittagong Hill Tracts are mainly Bhuban shale, reservoir rock is sandstone from Bhuban-Bokabil formation, the way of migration path is both through longitudinal and cross fault. The data of source rock and seal is collected from previous researches. Multiple types of traps have been found there. Conventional anticlinal traps which are highly disturbed due to tectonic instability & the core part are shale diapirism. Most of the anticlines are plunging and the nose or plunge area might be prospective to HC for being comparatively less faulted. Broad synclinal areas between tight narrow anticlines are another prospective area for HC. These similar types of synclines are also found in Tripura, India which is a highly prospective area for petroleum and their small anticlinal hums within syncline are also prospective. Some stratigraphic traps have also been found in Tripura from where production has been started already. Both Chittagong Hill Tracts and Tripura Fold Belts are parts of great Arakan Fold Belts, so similar type of structures might be prospective here. Apart from these, Bangladesh is a deltaic country. So stratigraphic trapment like channel sand, pinch-outs is possible. Considering all the elements of petroleum prospectivity of the area and

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“…Regional tectonic setting of the Bengal Basin and its adjoining area (modified afterMirkhamidov and Mannan, 1981;Abdullah et al, 2015;Khanam., 2017). The map shows the location of X gas field in the Surma Basin.…”

mentioning

confidence: 99%

Sequence stratigraphic analysis of the Surma Group in X Gas Field, Surma Basin, Bengal Delta

Parvin

Woobaidullah

Rahman

2019

Journal of Nepal Geological Society

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This study builds a high-resolution sequence stratigraphic framework for the Surma Group in the X Gas field. At first, electrofacies and depositional sequences were interpreted from wire line logs. Then, the field wide configurations of these sequences have been identified in seismic using reflection terminations (of flap, onlap, top lap and down lap relationship). Finally, wire line log and seismic interpretations were integrated to establish sequences stratigraphic framework in the Surma Group. Electrofacies analysis has revealed four major facies associations namely: (i) Bell shaped fining upward facies corresponds to retrogradational shoreface to tidal flat deposits, (ii) Funnel shaped coarsening upward facies corresponds to progradational shoreface to tidal flat, (iii) Cylindrical aggradational facies interpreted as stacked channel and (iv) Symmetrical or Bow shaped facies corresponds to heterolithic unit. The succession of Surma group of about 3100+ m has been divided into twelve depositional sequences. With exception of depositional sequence 1, 11 and 12, most of them are composed of three system tracts: sandy lowstand system tract, shaley transgressive system tract and heterolithic to shaley highstand system tract. Repetitive occurrence of incised valley, shoreface sand as well as tidal channel sand separated by transgressive system tract shelfal mud resulted in sand-shale alternation in the Surma Group. The lower depositional sequences (up to sequence-6) are shale dominated and equivalent to the Lower Surma Group. The upper six sequences are sand dominated, have more channel incisions and sequence boundary representing the Upper Surma Group

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2D structural modelling and hydrocarbon potentiality of the Sitakund structure, Chittagong Tripura Fold Belt, Bengal Basin, Bangladesh

Cited by 15 publications

References 7 publications

Geometry of the Décollement Below Eastern Bangladesh and Implications for Seismic Hazard

Geometry of the Décollement Below Eastern Bangladesh and Implications for Seismic Hazard

A Review on Hydrocarbon Prospectivity in Chittagong Hill Tracts and Adjacent Area

Sequence stratigraphic analysis of the Surma Group in X Gas Field, Surma Basin, Bengal Delta

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