Petroleum system in the Khmer Trough, Cambodia

Okui, Akihiko; Imayoshi, Akinori; Tsuji, Kosuke

doi:10.29118/ipa.634.365.379

Cited by 8 publications

(26 citation statements)

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“…The Khmer Basin is currently undergoing hydrocarbon exploration and production, and is thought to be tectonically stable, with no recorded earthquake activity (Giardini et al, 1999). Geological cross-sections (see Vysotsky et al, 1994) indicate that minimal faulting has occurred within Miocene sediments, and those faults that are present have not been reactivated and therefore may act as seals where they juxtapose sands and clays (Okui et al, 1997). These geological features indicate that Miocene sediments within this basin may be favorable for CO2 storage without posing problems for fault bounded closures (hydrocarbon traps within the Y-shape structure) in the basin.…”

Section: Co2 Storage Potentialmentioning

confidence: 96%

“…Lower Miocene sandstones are the most effective reservoirs for hydrocarbon accumulations within the central trough. These lower Miocene sandstone reservoirs were charged vertically by upper Oligocene shales (Okui et al, 1997),…”

Section: Basin Screeningmentioning

confidence: 99%

“…Natural gas (dominantly methane with minor ethane and propane) has been detected from these coals, with drilling data indicating background gas concentrations of 0.2%-0.5% at depths of 700-1000 m (Okui et al, 1997). Well data show that the basin has a geothermal gradient of between 45°C/km and 55°C/km with a sea-bed temperature of 22°C (data sourced from CNPA), indicating that in terms of geothermal effects on CO2 storage, this is a warm basin.…”

Section: Co2 Storage Potentialmentioning

confidence: 99%

“…Knowledge of the subsurface geology of Cambodia is currently restricted as a result of oil and gas exploration policy, the present research study aims to provide a preliminary assessment of the suitability of sedimentary basins in Cambodia for CO2 storage by determining which basins have large effective pore volumes. The study examines and assesses the structural geological framework and stratigraphy of Cambodian basins using published data (Vysotsky et al, 1994;Okui et al, 1997;Fyhn et al, 2010), along with information obtained via the cooperation of the CNPA (part of the Ministry of Mines and Energy of the Government of Cambodia). This is the first study to focus on the existence of suitable aquifers and hydrocarbon reservoirs within the Cambodian subsurface for the geological storage of CO2.…”

Section: Introductionmentioning

confidence: 99%

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A preliminary assessment of geological CO 2 storage in Cambodia

Chanrithyrouth

Yamada

Matsuoka

2014

International Journal of Greenhouse Gas Control

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This study screens and rank Cambodian sedimentary basins in terms of their containment, capacity, and feasibility for the geological storage of CO2. The results of the screening and ranking procedure indicate that the Khmer Basin is the most suitable basin, followed by the Kampong Saom and Tonle Sap basins. A quantitative volumetric assessment-based evaluation of CO2 storage capacity is performed on these three suitable basins. The evaluation yields a range in the national CO2 storage capacity of 90 Mt (in structural traps) to 45 Gt (in hydrodynamic traps), representing low-and high-case estimates, respectively. The saline aquifers associated with this storage capacity should be considered prospective storage options as hydrodynamic traps because of containment and capacity issues associated with the structural traps. Eight major point sources of CO2 are identified that have a combined output (estimated for 2008-2024) of 43.1 Mt annually and 82 billion m 3 in place, and the potentially-prospective matched storage capacity is assumed. Overall, a combination of the initial suitabilities of the basins and estimates of prospective matched storage capacity shows that the Khmer, Kampong Saom, and Tonle Sap basins may provide a solution to the problem of reducing future atmospheric emissions. The present results should assist both exploration geologists and experts in carbon capture and storage to gain a better understanding of the CO2 storage resources of Cambodia. However, the results should be regarded as preliminary because of the limited available data on which the assessments were based; future geological and geophysical data should improve the reliability of the estimates of carbon storage capacity reported here.

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Section: Co2 Storage Potentialmentioning

confidence: 96%

Section: Basin Screeningmentioning

confidence: 99%

Section: Co2 Storage Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A preliminary assessment of geological CO 2 storage in Cambodia

Chanrithyrouth

Yamada

Matsuoka

2014

International Journal of Greenhouse Gas Control

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“…Low-stand valley-fill deposits and clastic delta and submarine fan systems sourced by highs to the north, southwest, and east are possibly unrecognized prospects. and others, 1998;Tjia and Liew, 1996;Tjia, 1994;Ngah and others, 1996;Akihiko andothers, 1997: Hutchison, 1996. …”

Section: Undiscovered Petroleummentioning

confidence: 99%

Petroleum systems of the Malay Basin Province, Malaysia

Bishop¹

2002

Open-File Report

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The fluorescence alteration of multiple macerals technique for assessment of thermal maturity and the suppression of vitrinite reflectance.

良博¹,

シェーウッド²,

R.W.T.³

1999

J. JAPANESE. ASSOC. PETROL. TECHNOL.

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Abstract:Vitrinite reflectance is a very important thermal maturity indicator in petroleum exploration, but there are two major problems : one is the identification of vitrinite in dispersed organic matter and the other is the suppression or enhancement of vitrinite reflectance. It can be extremely difficult to correctly identify minute vitrinite grains in shapes using conventional microscopy.Even if the vitrinite identification is accurate, however, perhydrous compositions will lead to suppression of measured vitrinite reflectance and subhydrous compositions to enhancement.The fluorescence alteration of multiple macerals (FAMM) technique has been developed at CSIRO Petroleum in Australia to overcome these problems. The main advantages of the FAMM technique are 1) the occurrence and amount of suppression or enhancement of vitrinite reflectance are indicated, 2) identification of specific macerals is commonly not necessary for the analyses, 3) rocks containing very rare or no vitrinite can generally be measured, providing that a suite of other macerals are present and 4) problems of contamination and cavings can be resolved. Thermal maturity measurements with the FAMM technique have been done on more than 2,500 samples comprising Paleozoic to Tertiary coals and petroleum source rocks from around the world. Application of the FAMM technique to Japanese source rocks can help develop petroleum exploration in Japan.

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Petroleum system in the Khmer Trough, Cambodia

Cited by 8 publications

References 0 publications

A preliminary assessment of geological CO 2 storage in Cambodia

A preliminary assessment of geological CO 2 storage in Cambodia

Petroleum systems of the Malay Basin Province, Malaysia

The fluorescence alteration of multiple macerals technique for assessment of thermal maturity and the suppression of vitrinite reflectance.

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