Country Profile
Petroleum Geology & Potential
Exploration/Development History
Present Status
Exploration Activities
Exploration Drilling
Geophysical Investigation
Oil and Gas Resources
Oil and Gas Reserves
Offered Acreage
Contract Terms
Bidding Procedure
Other Information
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  Exploration Activities
           Currently 168 blocks are being explored and operated by both national and multinational companies under the PSC agreement. Twenty-seven (27) blocks are producing, while 141 are still at various stages of exploration, evaluation and well rehabilitation.
PSC signing contract in the period 1991-2000
  Exploration Drilling
           Exploration well drilling in the period of 1991 through 2000 fluctuated from year to year. In 1991, 138 wells were drilled, and these decreased to 124 wells in 1992. In 1993, they increased to 136 wells and sharply decreased to 78 wells in 1994. In 1996 the number increased again to 22 wells but decreased in 1997 to 11 wells. In 1998, the number sharply increased again to 145 wells and then decreased to 82 wells in 2000. The number of exploration wells drilled in the period 1991 – 2000 was 1081 wells or 108 wells per year on average, with the success rate of 52%.
PSC’s Exploratory Wells Drilling and Success Ratio in the period of 1991-2000
  Geophysical Investigation
           Generally speaking, the seismic survey activity conducted in Indonesia (by PSC's and Pertamina) showed a decrease, particularly in connection with the condition and situation in Indonesia. Seismic survey conducted by Pertamina and the Production Sharing Contracts in 1991 – 2000 period totaled 1,104,062 kms. Active seismic survey in Indonesia began in the late 60’s. Over the past eight years 2D and 3D seismic acquisitions averaged to 25,266 line kilometers and 4,393 square kilometers per-year respectively.
Seismic surveys conducted during the period of 1991-2000
         As an incentive to persuade investors to move to unexplored, remote and deep-water areas, the Government has decided to promote the area by providing speculative survey data. The Government has supported a geophysical survey company in several parts of Indonesia water.
         Exploration strategy to relatively mature areas has been successfully performed through the implementation of speculative 3D that can accurately determine drillable prospect. Since 3D survey solely conducted by a single company is very costly, the Government supports survey activities that are conducted through multi-client scheme.
         Through the speculative 3D survey the operators can smartly determine more accurate location in a wildcat drilling and reduce finding cost. Ideally, the speculative 3D should cover broad areas covering both part of active PSC working acreage and open acreage in order to minimize unit cost.
           In the bidding of new acreage, with 3D data provided from the above acquisition, the awarded operator will be provided an incentive through recovery of the 3D data licensing cost. From a study of the petroleum system in the frontier area assisted by 3D seismic, drillable prospect could be identified within a relatively short time. During the last 5 years, total speculative 2D seismic survey are 62,415.31 Km and 3D seismic are 16,209.98 Km2, spread out in 24 offshore locations.
Distribution of Speculative Survey in Indonesia
  Oil and Gas Resources
           The status of the Indonesia's oil and gas resources as of 1 January 1999 was estimated at 125.72 BBO and 288.84 TCFG for Risk Reduced Resources (RRR) and 38.44 BBO and 214.39 TCFG for Ultimate Recovery Resources (URR), respectively. These resources are hosted in sixty Tertiary sedimentary basins, covering an area of more than two millions square kilometers. So far there are only thirty six basins that have been explored in more detail. The hydrocarbon reserves are found largely in the Western part of Indonesia where most exploration activities have taken place.
Hydrocarbon resources in Indonesia in the period 1991-2000
  Oil and Gas Reserves
           Indonesia’s oil reserves are approximately 9.6 billion barrels. At an average production rate of 1.41 million barrels of oil per day (MMB/D) in 2000, Indonesia’s production of crude oil and condensate continued a gradual decline from 1.55 MMB/D in 1999 and 1.56 MMB/D in 1998. The Government’s revised 2002 draft budget assumes 2002 crude oil production of 1.23 MMB/D, down from a revised 2001 figure of 1.46 MMB/D. With substantial reserves of natural gas and coal, Indonesia could remain a net energy exporter for a longer period than current forecasts. To do so, the government must implement legislation and policies that will rationalize use of Indonesia’s energy resources. Energy policy reform would prolong Indonesia’s status as a net oil exporter and enhance efficient use of energy resources.
Oil Reserves
Gas Reserves

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Last Update : 8 August 2002