Petroleum system of Srikail gas field using sequence stratigraphy

Hossain, Imam Sohel; Woobaidullah, A. S. M.; Rahman, Md Jamilur

doi:10.3329/bjsr.v30i1-2.36115

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…9). These results are congruent with previous studies that found the association between sequence deposition and fluctuation of sea level (Najman et al 2012;Hossain et al 2018).…”

Section: Resultssupporting

confidence: 93%

“…On the contrary, the less intense channel cutting and lesser width imply the evidence of relatively higher sea level position during the rest of the sequence deposition. This finding is aligned with the previous study conducted by Najman et al (2012) and Hossain et al (2018) indicating similar characteristics of seismic mega sequence-2. The sequence remnants act as reservoir rocks preserved between multiple, down-cutting channels.…”

Section: Resultssupporting

confidence: 92%

“…( The average effective porosity is calculated using data from sonic, density and neutron logs. Different sonic, bulk density and neutron porosity values of shale are suggested to indicate different depositional environments (Hossain et al 2018). The effective porosity was subsequently calculated by subtracting the porosity calculated in the shale part of the lithology using Eq.…”

Section: Porositymentioning

confidence: 99%

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Reservoir characterization and identification of new prospect in Srikail gas field using wireline and seismic data

Hossain

Woobaidullah

Rahman

2021

J Petrol Explor Prod Technol

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Although reservoir characterization has been carried out by many researchers on the sedimentary package of the Bengal basin hydrocarbon province, integration of petrophysical and seismic sequence-based reservoir evaluation is rarely taken into account. This paper focuses on the identification of gas zones, reserve estimation and identification of new prospects in Srikail gas field within the eastern fold belt of Bengal basin integrating four wireline logs and 2D seismic data. Our study finds seven hydrocarbon-bearing zones (A, B, C, D, E, F and G) within the measured depth between 2429.5 and 3501 m. Petrophysical properties of seven hydrocarbon-bearing zones indicate that they are good quality reservoir sands. The gas horizons were mapped on seismic sections which reveal that the NW–SE anticlinal structure is largely affected by channels in the crest and western flank. The channels are infilled by fine-grained sediments which act as cap rock on northern and western parts of the structure. Thus, the anticlinal structure and fine-grained sediments make a potential trap for hydrocarbon accumulation and laterally and vertically well-distributed sequence remnants are the main reservoir rocks in this area. Volumetric reserve estimation of these sands provided a total gas initially in place as 552 billion cubic feet. Moreover, all the four wells are drilled in the southern block of the structure, and since there is a structural continuity from south to the north, it is highly recommended to drill a well up to 3000 m depth in the northern block to test its hydrocarbon potentiality. Overall, the outcomes of this study contribute new insights for reservoir characterization and identification of new prospects in an efficient way.

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“…9). These results are congruent with previous studies that found the association between sequence deposition and fluctuation of sea level (Najman et al 2012;Hossain et al 2018).…”

Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 92%

Section: Porositymentioning

confidence: 99%

See 1 more Smart Citation

Reservoir characterization and identification of new prospect in Srikail gas field using wireline and seismic data

Hossain

Woobaidullah

Rahman

2021

J Petrol Explor Prod Technol

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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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Petroleum system of Srikail gas field using sequence stratigraphy

Cited by 2 publications

References 6 publications

Reservoir characterization and identification of new prospect in Srikail gas field using wireline and seismic data

Reservoir characterization and identification of new prospect in Srikail gas field using wireline and seismic data

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

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