There are several extensive works has been done on Chittagong-Tripura Folded Belt to identify Basin evolution, tectonic setting, stratigraphy, geomorphology, sedimentation pattern, Petroleum Prospect etc. In 1992, Arif Mohiuddin Shikder, Kjwaja Zulfiqur Hayder and Kuttilil Narayanan on their study on ‘Tectonic Evolution of Eastern Fold Belt of Bangladesh’ focuses on the evolution of Eastern Fold Belt from the Dauki fault zone in the north to Akyab on the Arakan coast in the south. Eastward, the studied area has been extended all the way to the western margin of the Chindwin and Mingbow basin of Burma. They mainly use satellite imageries to identify the tectonic history of the region.

This area is characterized by plate collision tectonics of a most complex nature. In 2002, Arif Mohiuddin Sikdera and M. Mustafa Alam on their study on’2-D modelling of the anticlinal structures and structural development of the eastern fold belt of the Bengal Basin, Bangladesh (Abdullah, 2014)’ suggested that Bengal basin has been controlled by the collision pattern of the Indian plate with the Burma and Tibetan plates. The salient structural features of the eastern fold belt, e.g. multiphase fold development, series of east-dipping thrusts and a basal zone of detachment or decollement, are the products of thin-skinned tectonics resulting from the lndo-Burmese plate convergence.

This study purpose was a critical evaluation of the available surface and subsurface geological and remote sensing data in an effort to develop 2-D models for the structural growth of the anticlinal structures within the EFB and understand the process-response relationships between the structural style and tectonic evolution of the region within the framework of plate tectonics. In 2002, J. A. Curiale, G. H. Covington, A. H.

M. Shamsuddin, J. A.

Morelos, and A. K. M. Shamsuddin, their study on ‘Origin of petroleum in Bangladesh’ they describe the individual components of the petroleum systems known to be operating in Bangladesh, examine the occurrence and composition of hydrocarbon fluids, and determine the origin of these fluids by interpreting the details of their molecular and isotopic characteristics. In 2008, B.N.

Ghosh, B.S. Bora, Tarun Kumar, B.

B RAY, S.K.Bose and. K.L.Patel, their study on ‘Exploration Strategy for New Plays in Tripura Fold Belt – A Contemporary Approach’ focuses on the apart from the conventional structural closure, they looking of new plays particularly in Western Tripura. They suggested that to identify various plays particularly in grey areas like stratigraphic prospects in the syncline between established gas fields, strati-structural prospects in the flanks of established gas fields and other structural features. And most of the anticline in the Tripura are the continuation anticline in the Chittagong Hill Tracts.

So this study is also applicable for Chittagong Hill Tracts. In 2011, A. K. Jena1, N. C.

Das2, G. C. Saha3, and Asim Samanta, their study on ‘Exploration in Synclinal Areas of Tripura Fold Belt, India: A Re-found Opportunity’ mainly focuses on hydrocarbon plays, entrapment in synclines and the contemporary exploration strategy in Tripura Fold Belt. The understanding of stratigraphic traps, their trapping mechanism has brought these successes.

These discoveries have established that a significant regional potential exists in the synclinal areas of Chittagong Hill Tracts.