27 July 2015
Cooper Energy Limited (ASX: COE) advises that Bunian-4, an oil appraisal/development well, spudded in the KSO Tangai-Sukananti Block (refer map following), South Sumatra, Indonesia at 3:30 p.m Indonesian local time, 25 July 2015. At 06:00 this morning, 20" surface casing had been run
and cemented at 51 metres and preparations were being made to drill ahead in 17 ½" hole.
Bunian-4 is an onshore directional well with a prognosed total depth of 1,712 metres and is forecast to take approximately 26 days to complete, inclusive of production testing.
The Bunian structure is a four-way, fault bounded anticline defined by the 2011 Sukananti 3D
seismic survey.
The primary target is the Talang Akar Formation TRM-3 Sand, which is expected to be intersected
450 metres east-southeast of the same reservoir in Bunian-3. The target is 380 metres south-south east of the surface location and the well will be deviated at 25 degrees to reach its intended objective. The well is expected to add an oil production take point and pressure data obtained will assist in further appraising the size of the oil accumulation.
The TRM-3 Sand is currently producing at approximately 650 bopd from Bunian-1 and Bunian-3 and has cumulatively produced just over 1 million barrels of oil from the Bunian-1 well. The flow rates are limited by transport capacity constraints; on test in Bunian-3 the zone produced at a stabilized 1,742 bopd.
The secondary objectives of the well are to appraise the extent of the oil pool discovered in the K1
Sand in Bunian-3 ST2 which flowed at 1,590 bopd on test and to assess the TRM-1 and TRM-2
Sands which it was not possible to evaluate in the earlier well. Joint Venture participants in the Tangai-Sukananti KSO are:
Cooper Energy Sukananti Ltd (55% and Operator)
Mega Adhyaksa Pratama Sukananti Ltd (45%)
David Maxwell, Managing Director, +61 8 8100 4900 Don Murchland, Investor Relations,+61 439 300 932
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Figure 1: localion of Tangai-Sukananti KSO and other Cooper Energy lndonesian licences
c:=::J Cooper Energy permit
Oilfield
Gasfield
-- Pipeline
Prospects and leads
Sungai
J'OO'S
f ,L----:J
, -'.-._
Kilometres
Tangai-Sukananti KSO 55%
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Figure 2: Bunian Field, TRM3 Sand deplh slruclure map
c:::::::J Permit boundary
............._ Fault Probable gas Proven oil(1P) Probable oil (2P)
Possible oil (3P) Oilwell
Water injector
-- Dry hole Surface hole location and well path
o Proposed well
Sukananti-1
kilometres
Bunian Field
TRM3 Sand
Depth Structure Map
are metres below sea leve/p
Figure 3: Schemalic olBunian lield TRM3 and K1 oiland gas sands
MSL
-l300m
-1400m
-1500m
South west
North east l North west
Bunian-3ST1 Proposed
Bunian-4
South east
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