Hou Jun, Dai Guohan, Wei Jie, Xiao Yi, Xu Xuepin. Reservoir characterization and exploitation potential in Orinoco heavy oil belt in Venezuela[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2014, 36(6): 725-730. doi: 10.11781/sysydz201406725
Citation: Hou Jun, Dai Guohan, Wei Jie, Xiao Yi, Xu Xuepin. Reservoir characterization and exploitation potential in Orinoco heavy oil belt in Venezuela[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2014, 36(6): 725-730. doi: 10.11781/sysydz201406725

Reservoir characterization and exploitation potential in Orinoco heavy oil belt in Venezuela

doi: 10.11781/sysydz201406725
  • Received Date: 2013-02-06
  • Rev Recd Date: 2014-11-05
  • Publish Date: 2014-11-28
  • The Orinoco heavy oil belt is on the southern slope of the Eastern Venezuela Basin, with an area of 55 000 km2. The heavy oil reservoirs were buried 350-1 200 m deep. The unconsolidated sandstones in Oligocene and Miocene worked as the main reservoirs, with the average porosity and permeability of 33.4% and 4 760×10-3 μm2, respectively. Reservoir temperature is 40-55 ℃. Reservoir pressure coefficient is about 1. Super heavy oil API is 7.5 °-9 °. Situ viscosity is 1 000- 6 000 cP. Reservoir effective thickness is 6-120 m. The original proven geologic reserve is 11 220×108 bbl, and the recoverable reserve is 2 600×108 bbl. There are five heavy oil developing blocks with daily oil production of about 72 ×104 bbl. A set of economic and feasible developing technology series has been formed. The recoverable reserve of the developing blocks is about 3% of the total recoverable reserves of heavy oil belt, showing great exploration potentials.

     

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