Oilex Makes Headway on Third Well at Cambay Field

Cambay Field, India
(Click to Enlarge)

Oilex has advised that Cambay-73, the third well in the Cambay Field appraisal program, is drilling ahead at a depth of 1,268 meters. The first of the primary objectives is anticipated at about 1,495 meters.

Cambay-19Z appraisal well


  • Primary: Basal EP IV - oil
  • Eocene EP III and EP IV - oil
  • Secondary: Oligocene OS II - gas
  • Miocene Basal Sandstone - gas
  • Deccan Fractured Basement - oil


A workover rig is expected to be on site within the next 7 - 10 days.


Additional tests at the level of the Basal EP IV oil zone were conducted during the week.

DST #2 will be carried out over a potential oil zone similar to  the Basal EP IV. The Basal EP IV zone is present in at least  three old wells on the Western High Block. These old wells were either not tested or were poorly evaluated and appear to have a similar log response to the zone that was successfully tested in Cambay-19Z. Preliminary indications from seismic and the analogous well logs are that the Basal EP IV may extend across
the Western High Block.

Cambay-73 appraisal well


  • Primary: Oligocene OS II - gas
  • Eocene EP III and EP IV - gas
  • Basal EP IV - oil
  • Secondary: Miocene Basal Sandstone - gas
  • Deccan Fractured Basement - oil
  • Current Depth: 1,268 meters
  • Total Depth (TD): 2,205 meters (planned)


Drilling ahead in 12 1/4' hole to the OS II primary objective at about 1,460 meters.

Cambay-73 is a vertical well that has been located to drill the OS II and EP III-IV primary objectives on the eastern side of the fault that separates the Western High Block from the Basin Gas Area. It is anticipated that both zones will be gas bearing in this well.

The well is also designed to intersect the Basal EP IV oil zone on the Western High Block at a favorable structural location.

Participants in the Cambay Production Sharing Contract are:

Joint Venture Party Participating Interest

  • Oilex Ltd (Operator) 30%
  • Oilex NL Holdings (India) Limited (100% owned by Oilex 15% Ltd)
  • Gujarat State Petroleum Corporation 55%




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