Text Size
Print Page
Print This Page
E-mail Page
Email This Page


As a result of some giant gas discoveries offshore India, many oil and gas companies have their sights set on this highly attractive region. However, the lack of good quality data has hampered exploration efforts. To provide an improved regional understanding of the petroleum systems of offshore India, ION designed IndiaSPAN II.

IndiaSPAN II is a regional 2D seismic data program which covers many of the major basins off the east and west coasts of India. The comprehensive program includes approximately 10,000 km of high quality 2D marine data and was designed by regional experts and with the goal of better understanding the regional geology and less explored basins in the region. The survey is designed to be complementary to the IndiaSPAN I survey available from the National Data Repository.

Program Objectives

  • Provide a prestack depth migrated, regional framework for India's prolific basins
  • Understand source rock potential and trap mechanisms in all the major sedimentary basins of the east and west coasts of India
  • Understand the basement structure, rift architecture, basin formation and deep water fan development
  • Provide a basis for understanding the conjugate ties with East AfricaSPAN
  • Develop a mechanism for the Mesozoic and Cenozoic framework for India
  • Develop methodology for uncovering the vast hydrocarbon potential of India, particularly in deep water

Key Components

  • Imaging of the East Indian Mahanadi and Cauvery basins, the Mannar basin and tying together the West Indian Kerala Konkan, Mumbai and Kutch basins
  • Collected with 10,000 m offsets, 18-second record lengths and a powerful, deep-penetrating source
  • Proven deep tow technology to provide additional penetration below the basalts
  • Uniform acquisition and processing provides valuable calibration for AVO, phase rotation, and amplitude balancing complimentary datasets
  • Addresses geological problems that are barriers to exploiting established plays, developing new plays, and to trigger new ideas to drive exploration and discoveries for the future

PSDM imaged to 30 km showing benefit of deep tow to improve imaging below Decan Traps.

Additional Resources