Petroleum Systems of Offshore Southeastern China

Getech’s Petroleum Systems of Offshore Southeastern China is one of four integrated reports for the Indochinese Peninsula.

Each report builds on Getech’s unique global gravity and magnetic data to underpin a re-evaluation of the structural development, and implications for the tectonic development, of the region. This forms the basis for the mapping of seven key palaeogeographic timeslices, which, when combined with analysis of Present Day drainage, enables new insights into both landscape evolution and its impact on sediment dispersal. The reports also contain reviews of the geochemical literature and new geochemical modelling. Utilisation of this workflow has generated new insights into the petroleum systems for each study area.

In the Petroleum Systems of Offshore Southeastern China, Getech has examined how the opening of the South China Sea has impacted on the structural evolution of the Chinese margin. Structures mapped from Getech’s comprehensive gravity and magnetic data are shown to be a major control on the distribution of sediment over the continental shelf.  Additionally, evolution of the hinterland drainage is a fundamental control on the margin’s erosional history and the locations of clastic sediment input onto the shelf.

The Petroleum Systems of Offshore Southeastern China area of interst“Structures mapped from Getech’s comprehensive gravity and magnetic data are shown to be a major control on the distribution of sediment over the continental shelf.”


  • 386 page report with 222 figures and tables
  • Seven enclosures
  • An ArcGIS™ mxd project and geodatabase v10.x (earlier versions available on request)
  • Geochemical model inputs

All products supplied subject to our standard Licence Agreement (available on request).

This Regional Report investigates…

…the mechanisms behind the opening of the South China Sea and its influence on rifting along the southeastern margin of China.

…how hinterland drainage patterns have evolved, with particular emphasis on the development of the Xi (Pearl) River and short-headed rivers on the margins of the Beibu Gulf and Qiongdongnan Basins.

…the distribution and main risks associated with reservoirs in the Beibu Gulf, Qiongdongnan and Pearl River Mouth Basins.

…source rock maturity, quality and relationships to known hydrocarbon occurrences.

Report Contents

  • Executive Summary and Introduction
  • Structure and Tectonics
  • Palaeogeographic Mapping
    • Middle Miocene
    • Late Oligocene
    • Middle Eocene
    • Late Paleocene
    • Hauterivian
    • Norian
    • Wordian
  • Drainage and Landscape Analysis
  • Petroleum Systems Analysis
    • Beibu Gulf Basin
    • Qiongdongnan Basin
    • Pearl River Mouth Basin
  • Petroleum Geochemistry, including discussion of seven 1D geochemical models
  • Conclusions and Appendices

ArcGIS™ Contents

Present Day:

  • Cultural data
  • Sedimentary basins and sub-basinal features
  • Well, outcrop, field and block locations
  • Images of gravity and magnetic data, derivatives and transforms
  • Structures
  • Heatflow and geothermal gradient
  • Facies maps for reservoirs in the Pearl River Mouth Basin
  • Topography and bathymetry
  • Risk analysis

For each timeslice (Middle Miocene, Late Oligocene, Middle Eocene, Late Paleocene, Hauterivian, Norian, Wordian):

  • Rotated cultural data
  • Rotated structural elements and tectonic plates
  • Rotated published data points pertinent to the timeslice
  • Rotated potential field data
  • Palaeorivers and lakes, rotated Present Day drainage
  • Palaeotectonostratigraphic terrains and palaeogross depositional environments
  • Modelled palaeotopography and palaeobathymetry

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A full technical specification is available on request.

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