Delineation of Organic Richness and Thermal History of the Lower Cretaceous Thamama Group, East Abu Dhabi: A Modeling Approach for Oil Exploration

1996 ◽  
Author(s):  
Ahmed A. Taher
Keyword(s):  
Thermal History ◽  
Lower Cretaceous ◽  
Abu Dhabi ◽  
Oil Exploration ◽  
Modeling Approach ◽  
History Of

scholarly journals Modeling of Tectonic-Thermal Evolution of Cretaceous Qingshankou Shale in the Changling Sag, Southern Songliao Basin, NE China

2021 ◽  
Vol 9 ◽  
Author(s):  
Yuchen Liu ◽  
Bo Liu ◽  
LiJuan Cheng ◽  
Jilin Xing ◽  
Shansi Tian ◽  
...  
Keyword(s):  
Heat Flow ◽  
Late Cretaceous ◽  
Thermal History ◽  
Thermal Evolution ◽  
Songliao Basin ◽  
Tectonic Activity ◽  
Hydrocarbon Generation ◽  
Shale Oil ◽  
Oil Exploration ◽  
History Of

A series of significant shale oil discoveries have been made recently in the Upper Cretaceous Qingshankou Formation in the Songliao Basin, providing a new resource target for shale oil exploration in Northeast China. In this context, an understanding of the tectonic-thermal evolution and maturation history of the Qingshankou Formation is of great significance for shale oil exploration and evaluation. In this study, the thermal history of the Qingshankou Formation since the Late Cretaceous was reconstructed using the paleothermal indicator method. The results indicate that two stages of thermal evolution exist in the southern part of the Songliao Basin: 1) the gradual heating stage during the Late Cretaceous; the heat flow gradually increases during this period and reaches a maximum heat flow value at the end of the Cretaceous. 2) The decline stage since the Neogene; the tectonic activity is relatively stable and the geothermal heat flow is gradually reduced, and the present-day heat flow ranges from 60.1 to 100.7 mW/m2, with an average of 78.2 mW/m2. In addition, the maturity history of the organic-rich shale was reconstructed based on the new thermal history. The Cretaceous Qingshankou shales underwent deep burial thermal metamorphism at the end of the Cretaceous, whereas thermal has faded since the Neogene. The hydrocarbon generation and migration since the Late Cretaceous period of K2qn1 were modeled based on the maturity model. Two main cooling events took place in the late Nenjiang period and the late Mingshui period in the Changling sag. These two tectonic events controlled the structural style and the formation of shale oil reservoirs in the southern Songliao Basin.

scholarly journals Delineation of Organic Richness and Thermal History of the Lower Cretaceous Thamama Group, East Abu Dhabi: A Modeling Approach for Oil Exploration

GeoArabia ◽  
1997 ◽  
Vol 2 (1) ◽  
pp. 65-88 ◽  
Author(s):  
Ahmed A. Taher
Keyword(s):  
Vertical Distribution ◽  
Source Rock ◽  
Lower Cretaceous ◽  
Source Rocks ◽  
Abu Dhabi ◽  
Regional Pattern ◽  
History Of ◽  
Wireline Logs ◽  
Thermal Histories ◽  
The Vertical Distribution

ABSTRACT The source rocks of the Lower Cretaceous Thamama Group in east Abu Dhabi were identified by using wireline logs. This technique was applied to 33 wells which provided a well-sampled new regional pattern of source rock distribution and thickness. The Thamama Group includes rich source rocks in the Aptian Shu’aiba intra-shelf basin facies and a moderate source rock potential in the dense layers, especially those in the basal part of the Nasr Formation. The reconstruction of the burial and thermal histories indicates that the mature Thamama kitchens are mainly located in the eastern part of Abu Dhabi, adjacent to the foredeep basin and reached optimum maturity levels starting in the Eocene. Westward migration from these kitchens is mainly lateral and updip toward the main Thamama producing fields in central Abu Dhabi. The conclusion that the hydrocarbons migrated laterally is supported by oil to source rock correlation and the vertical distribution of hydrocarbons in the reservoirs.

Thermal history of the Slušovice-1 borehole

2015 ◽  
Author(s):  
Petr Jirman ◽  
Marek Goldbach ◽  
Eva Geršlová
Keyword(s):  
Thermal History ◽  
History Of

Konflik Hubungan Pusat-Daerah antara Pemerintah Pusat dan Kabupaten Blora Terkaiat dengan Dana Bagi Hasil Blok Cepu

2012 ◽  
Vol 10 (2) ◽  
pp. 147-162
Author(s):  
Budi Setiyono ◽  
Dio Satrio Jati ◽  
Teten Jamaludin
Keyword(s):  
Local Government ◽  
Oil And Gas ◽  
Central Government ◽  
Oil Exploration ◽  
Colonial Era ◽  
National Budget ◽  
History Of ◽  
District Government ◽  
Financial Income ◽  
Resources Share

Cepu Block located between Centre Jawa and East Java. It is known as a rich block because it has a source of oil and gas. Block Cepu, where geographically located between three districts, Blora (Centre Java), Bojonegoro and Tuban (East Java) has given a contribution to national budget (APBN) and respected local government budget (APBD). About 33 per cent of the land of Cepu Block is owned by Blora, 67 per cent owned by Bojonegoro and the rest is owned by Tuban. Ironically, however, although 33 per cent of the Block belongs to Blora, the district does not receive any financial income from the oil exploration. There is no resources share fund from Cepu Block. Moreover, the district has to deal with the negative impacts of exploration activities at the Block Cepu such as damaging of infrastructure, environmental pollution, and social disturbance. Blora District has protested to Centre Government, but so far there is no outcome. Centre Government asked that this problem should be studied first. The central government argue that if it is approved, then there will be domino impact: other districts will do the same like Blora. Blora district is struggling to get equality in resources share fund (dana bagi hasil). Efforts have done, seminars and workshops, lobby to DPD (Upper House) to find a solution. Now the district government is proposing judicial review to constitution court. This research examines the history of Block Cepu. It reveals the history of the block from the colonial era up to the reformation era. Further, the research aims to know how the tension between local government (Blora Government) and central government regarding Blok Cepu oil exploration. The research suggests that there is injustice in the distribution of revenue from the exploration and it is understandable if Blora district government struggle to get proportional revenue sharing.

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