The Browse Basin Province 3913, offshore northern Australia, contains one important petroleum sys... more The Browse Basin Province 3913, offshore northern Australia, contains one important petroleum system, Late Jurassic, Early Cretaceous-Mesozoic. It is comprised of Late Jurassic through Early Cretaceous source rocks deposited in restricted marine environments and various Mesozoic reservoir rocks deposited in deep-water fan to fluvial settings. Jurassic age intraformational shales and claystones and Cretaceous regional claystones seal the reservoirs. Since 1967, when exploration began in this 105,000 km 2 area, fewer than 40 wells have been drilled and only one recent oil discovery is considered potentially commercial. Prior to the most recent oil discovery, on the eastern side of the basin, a giant gas field was discovered in 1971, under a modern reef on the west side of the basin. Several additional oil and gas discoveries and shows were made elsewhere. A portion of the Vulcan sub-basin lies within Province 3913 where a small field, confirmed in 1987, produced 18.8 million barrels of oil (MMBO) up to 1995 and has since been shut in. Numerous untested structures and other prospects, along with proven oil and gas accumulations, provide for many exploration opportunities and the potential for this area to be a significant contributor to the petroleum resources of Australia. Development of infrastructure for this remote location will come with the discovery of additional reserves both here and in the adjacent Bonaparte Gulf and Timor Sea areas.
In this project, the world was divided into 8 regions and 937 geologic provinces, which were then... more In this project, the world was divided into 8 regions and 937 geologic provinces, which were then ranked according to the discovered oil and gas volumes within each (Klett and others, 1997). Then, 76 "priority" provinces (exclusive of the U.S. and chosen for their high ranking) and 26 "boutique" provinces (exclusive of the U.S. and chosen for their anticipated petroleum richness or special regional economic importance) were selected for appraisal of oil and gas resources. Portions of numerous additional "boutique" provinces were eventually included. The petroleum geology of these priority and boutique provinces is described in this series of reports. Example Region, single digit 3 Province, three digits to the right of region code 3162 Total Petroleum System, two digits to the right of province code 316205 Assessment unit, two digits to the right of petroleum system code 31620504 The codes for the regions and provinces are listed in Klett and others (1997). Oil and gas reserves quoted in this report are derived from Petroconsultants' Petroleum Exploration and Production database (Petroconsultants, 1996) and other area reports from Petroconsultants, Inc., unless otherwise noted. Fields, for the purpose of this report, include producing fields, discoveries (suspended and abandoned) and shows as defined by Petroconsultants (1996) and may consist of a single well with no production. Figure(s) in this report that show boundaries of the total petroleum system(s), assessment units, and pods of active source rocks were compiled using geographic information system (GIS) software. Political boundaries and cartographic representations were taken, with permission, from Environmental Systems Research Institute's Arc World 1:3 million digital coverage (1992), have no political significance, and are displayed for general reference only. Oil and gas field centerpoints, shown on this (these) figure(s), are reproduced, with permission, from Petroconsultants, 1996.
This report was prepared as part of the World Energy Project of the U.S. Geological Survey. For t... more This report was prepared as part of the World Energy Project of the U.S. Geological Survey. For this project, the world was divided into 8 regions and 937 geologic provinces, which were then ranked according to the discovered oil and gas volumes within each (Klett and others, 2000). Then, 76 "priority" provinces (exclusive of the U.S. and chosen for their high ranking) and 26 "boutique" provinces (exclusive of the U.S. and chosen for their anticipated petroleum richness or special regional economic importance) were selected for appraisal of oil and gas resources. The petroleum geology of these priority and boutique provinces is described in this series of reports. Example Region, single digit 3 Province, three digits to the right of region code 3162 Total Petroleum System, two digits to the right of province code 316205 Assessment unit, two digits to the right of petroleum system code 31620504 The codes for the regions and provinces are listed in Klett and others, 2000. Oil and gas reserves quoted in this report are derived from Petroconsultants' Petroleum Exploration and Production database (Petroconsultants, 1996) and other area reports from Petroconsultants, Inc., unless otherwise noted. Fields, for the purpose of this report, include producing fields, discoveries (suspended and abandoned) and shows as defined by Petroconsultants (1996) and may consist of a single well with no production. Figure(s) in this report that show boundaries of the total petroleum system(s), assessment units, and pods of active source rocks were compiled using geographic information system (GIS) software. Political boundaries and cartographic representations were taken, with permission, from Environmental Systems Research Institute's ArcWorld 1:3 million digital coverage (1992), have no political significance, and are displayed for general reference only. Oil and gas field centerpoints, shown on this (these) figure(s), are reproduced, with permission, from Petroconsultants, 1996.
Example Region, single digit 3 Province, three digits to the right of region code 3162 Total Petr... more Example Region, single digit 3 Province, three digits to the right of region code 3162 Total Petroleum System, two digits to the right of province code 316205 Assessment unit, two digits to the right of petroleum system code 31620504 The codes for the regions and provinces are listed in Klett and others, 1997. Oil and gas reserves quoted in this report are derived from Petroconsultants' Petroleum Exploration and Production database (Petroconsultants, 1996) and other area reports from Petroconsultants, Inc., unless otherwise noted. Fields, for the purpose of this report, include producing fields, discoveries (suspended and abandoned) and shows as defined by Petroconsultants (1996) and may consist of a single well with no production. Figure(s) in this report that show boundaries of the total petroleum system(s), assessment units, and pods of active source rocks were compiled using geographic information system (GIS) software. Political boundaries and cartographic representations were taken, with permission, from Environmental Systems Research Institute's ArcWorld 1:3 million digital coverage (1992), have no political significance, and are displayed for general reference only. Oil and gas field centerpoints, shown on this (these) figure(s), are reproduced, with permission, from Petroconsultants, 1996.
The offshore Malay Basin province is a Tertiary oil and gas province composed of a complex of hal... more The offshore Malay Basin province is a Tertiary oil and gas province composed of a complex of half grabens that were filled by lacustrine shales and continental clastics. These deposits were overlain by clastics of a large delta system that covered the basin. Delta progradation was interupted by transgressions of the South China Sea to the southeast, which finally flooded the basin to form the Gulf of Thailand. Oil and gas from the Oligocene to Miocene lacustrine shales and Miocene deltaic coals is trapped primarily in anticlines formed by inversion of the half grabens during the late Miocene. Hydrocarbon reserves that have been discovered amount to 12 billion barrels of oil equivalent. The U.S. Geological Survey assessment of the estimated quantities of conventional oil, gas and condensate that have the potential to be added to reserves by the year 2025 for this province is 6.3 billion barrels of oil equivalent (BBOE) (U. S.
The Asia Pacific region and its constituent countries, including offshore areas to water depths o... more The Asia Pacific region and its constituent countries, including offshore areas to water depths of 2,000 m, were divided into 256 geologic provinces (Klett and others, 1997; Steinshouer and others, 1999). Several provinces in Region 3 that overlap with Regions 2 on the north and Region 8 on the west were included with those regions. Eighteen of the 256 geologic provinces were assessed for undiscovered conventional oil and gas resources (Region 3 map). The assessed provinces include well-established onshore basins, such as the Bohaiwan (China) and Central Sumatra (Indonesia) Basins; well-established offshore basins, such as the Gippsland Basin (Australia); moderately explored onshore basins with large underexplored areas, such as the Kutei (Indonesia) and the Baram Delta-Sabah (Brunei and Malaysia) Basins; underexplored onshore basins, such as the Tarim Basin (China); and underexplored offshore basins, such as the Northwest Shelf (Australia) and Malay (Malaysia and Thailand) Basins. The assessment was
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