Drilling Update - Encouraging Indicators at Dukas-1
Brisbane, Aug 13, 2019 AEST (ABN Newswire) - As recently announced by Central Petroleum Limited (
ASX:CTP) (C9J:FRA) (CPTLF:OTCMKTS) , the Dukas-1 exploration well, located approximately 175km south west of Alice Springs, encountered formation pressures much higher than predicted at a depth of 3,704m.
HIGHLIGHTS
- Well to be suspended at 3,704m
- Hydrocarbon-bearing gas circulated to surface provides strong evidence of a working petroleum system
- Significant over-pressure just above the prognosed primary target indicates an efficient seal is in place
- The potential formation pressures associated with drilling forward to the primary target would require a higher specification rig and surface equipment
- Wireline logs and vertical seismic profiling (VSP) are currently being conducted to help form a forward plan.
Santos (ASX:STO), as Operator, has assessed that the potential formation pressures associated with drilling forward to the primary target are in excess of the capabilities of the current rig and surface equipment. We are currently acquiring a suite of wireline logs (including a VSP), after which the well will be suspended. A forward plan will then be developed over the next few months incorporating all available data gathered while drilling and logging. A further update will be provided as soon as a forward plan for Dukas-1 has been determined by the joint venture (JV).
It is not currently possible to obtain a downhole gas sample for full compositional testing. However, gas recovered to surface with drilling fluids confirms the presence of hydrocarbons and inert gasses. This provides strong evidence of a working petroleum system at the Dukas-1 location.
Santos is operating the Dukas-1 well drilling programme and carrying 100% of the cost of the well to earn a 70% interest in EP112.
CHIEF EXECUTIVE OFFICER COMMENT
"Encountering a high-pressure inflow of hydrocarbon-bearing gas this close to where we believe our target formation is located is really exciting on a technical front. It provides strong evidence of a working petroleum system with an effective seal which increases the chance of a material gas resource at this prospect.
A delay in completing the drilling of Dukas-1 is frustrating for everyone, especially with promising indicators this close to our target. We are working closely with Santos as our JV partner and Operator to develop a forward plan as quickly as possible. Notwithstanding, a drilling delay due to high-pressure hydrocarbon-bearing gas just above the target formation is, on balance, a positive development for this exciting prospect." said Leon Devaney, Central Petroleum's CEO and MD.
About Central Petroleum Limited
Central Petroleum Limited (
ASX:CTP) is an established ASX-listed Australian oil and gas producer (ASX:CTP) with exploration and appraisal permits in the Northern Territory (NT). Central has grown to become the largest onshore gas operator in the NT, supplying residential and industrial customers in the NT and wider Australian east coast market.
Central is seeking to become a major domestic energy supplier, in addition to helium and naturally occurring hydrogen, with exploration, appraisal and development plans across 169,112 km2 of tenements the NT, including some of Australia's largest known onshore conventional gas prospects in the Amadeus Basin.
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