High-Resolution Sequence-Stratigraphic Correlation and Facies Characterization of Upper Thamama (Lower Cretaceous) Reservoir Units and Non-Reservoir Zones, Abu Dhabi, United Arab Emirates

2008 ◽  
Author(s):  
Abdulla Ibrahim Al Mansoori ◽  
Christian J. Strohmenger ◽  
Ahmed Abdul Majid Abdul Ghani ◽  
John Mitchell
Keyword(s):  
High Resolution ◽  
United Arab Emirates ◽  
Lower Cretaceous ◽  
Abu Dhabi ◽  
Stratigraphic Correlation ◽  
Sequence Stratigraphic ◽  
Facies Characterization

scholarly journals High-resolution Sequence Stratigraphic Architecture of Barremian/Aptian Carbonate Systems in Northern Oman and the United Arab Emirates (Kharaib and Shu’aiba Formations)

GeoArabia ◽  
2002 ◽  
Vol 7 (3) ◽  
pp. 461-500 ◽  
Author(s):  
Frans S.P. van Buchem ◽  
Bernard Pittet ◽  
Heiko Hillgärtner ◽  
Jürgen Grötsch ◽  
Abdullah I. Al Mansouri ◽  
...  
Keyword(s):  
High Resolution ◽  
Sea Level ◽  
United Arab Emirates ◽  
High Energy ◽  
Abu Dhabi ◽  
Third Order ◽  
Depositional Sequences ◽  
Sequence Stratigraphic ◽  
Stratigraphic Model ◽  
Intrashelf Basin

ABSTRACT A regional sequence stratigraphic model for the Kharaib and Shu’aiba formations (Barremian, Aptian) is proposed based on outcrop and subsurface transects in Oman and the United Arab Emirates. The model shows distinct variations in depositional facies and geometrical patterns in relation to third-order sequences. The sedimentary systems evolved from a low-angle carbonate ramp (Kharaib Formation), to an organic-rich intrashelf basin surrounded by carbonate platforms (Hawar Member and Lower Shu’aiba), to a clay-dominated sedimentation restricted to the intrashelf basin (Upper Shu’aiba). Eustatic sea-level changes and, to a lesser extent, local tectonic controls influenced the development of the systems. This high-resolution sequence stratigraphic model has implications for both exploration and production strategies. This study presents a revised sedimentological facies interpretation based on detailed outcrop observations with geological constraints provided by a regional well-log correlation from Oman and the United Arab Emirates. Time control was provided by biostratigraphy (including new nannofossil data), and carbon isotope stratigraphy. Four third-order depositional sequences bounded by regional exposure surfaces were defined that are composed of at least two higher-order sequences (fourth- and fifth-order). Depositional sequences I and II have a flat ramp setting. The typical ecological succession was orbitolinid and/or miliolid wackestone-packstone deposited in a low-energy, inner ramp environment during early transgression; a mixed-fauna mudstone-wackestone in an open lagoon during maximum flooding and early highstand; and a rudist/miliolid wackestone-packstone-grainstone-framestone of the succeeding late highstand in a high-energy, inner- to mid-ramp environment. The doubling in thickness of the sequences from Oman to Abu Dhabi is attributed to differential subsidence. The Sequence III succession was somewhat similar, but differences were caused by the creation of the intrashelf Bab Basin, and by well-developed microbial boundstones. The basin morphology was primarily due to differential accumulation rates and tectonism was of only minor importance. Rapidly aggrading and backstepping microbial boundstones formed the platform, whereas condensed sedimentation and the accumulation of carbonate source rocks occurred in the basin. Highstand deposits were primarily grainy, high-energy rudist-dominated facies. The sequence ended with a forced regressive wedge along the basin margins. Sequence IV was restricted to the Bab Basin and sedimentation consisted of a clay-rich infill phase. At that time, the Oman and Abu Dhabi platforms were exposed on both sides of the basin. Nannofossils dated this major relative fall in sea level to the early-late Aptian.

High Resolution Sequence Stratigraphic Frameworks Research in the XII Group of the Member III of Qing Shankou Formation in the Qian'an Oilfield

2013 ◽  
Vol 339 ◽  
pp. 728-731 ◽  
Author(s):  
Cun Lei Li ◽  
Lei Qin ◽  
Xue Li ◽  
Xi Long Zhang
Keyword(s):  
High Resolution ◽  
Stratigraphic Correlation ◽  
Short Term ◽  
Middle Term ◽  
Sequence Stratigraphic ◽  
Base Level ◽  
Mud Logging ◽  
High Resolution Sequence Stratigraphy ◽  
Symmetric Structures

With the instruction of the high resolution sequence stratigraphy and sedimentology theory, and the comprehensive application of 11 wells core, more than 800 mud logging and log data, high resolution sequence stratigraphic characteristics research in the XII Group of the Member III of Qing Shankou Formation in the Qianan oilfield has been finished. The results show that the study area can be divided into one middle-term base level cycle and five short-term base level cycles. The only sequence structure of middle term cycle is (B type) and the short term cycle mainly consists of B types meanwhile there are small mounts of upward deepening structures (A type) and symmetric structures (C type). Based on the classification of base-level cycles, fine stratigraphic correlation is conducted by using isochronous cycle correlations. In addition, 15 high resolution sequence stratigraphic frameworks are established which unify the study area and provide the solid geological basis for the sandstone distribution, the identification of mainly oil-bearing sand bodies and potential oil reservoirs.

scholarly journals Sequence Stratigraphic Modeling of the Lower Thamama Group, East Onshore Abu Dhabi, United Arab Emirates

GeoArabia ◽  
1997 ◽  
Vol 2 (2) ◽  
pp. 179-202 ◽  
Author(s):  
Sabah K. Aziz ◽  
Mohamed M. Abd El-Sattar
Keyword(s):  
United Arab Emirates ◽  
Seismic Data ◽  
Depositional Environment ◽  
High Energy ◽  
Source Rocks ◽  
Abu Dhabi ◽  
Sequence Stratigraphic ◽  
Reservoir Development ◽  
Energy Environment ◽  
Exploration Activity

ABSTRACT The Lower Cretaceous (Berriasian to Valanginian) Habshan Formation (Lower Thamama Group) of Abu Dhabi was deposited on a broad carbonate shelf. In east onshore Abu Dhabi, the Habshan Formation consists mainly of limestone and dolomite reaching a thickness of more than 1,100 feet. The depositional environment ranged from shallow-water peritidal to deeper shelf basin. The integration of seismic-stratigraphic, biostratigraphic, lithostratigraphic and electric log data reveals three sequences (I to III) and three shelf edges within the Habshan Formation in east onshore Abu Dhabi. These high energy shelfal sediments prograde toward the basin to the east and northeast with their shelf edges trending north-northwest to south-southeast. The seismic data indicates that the basin was filled in the east during the Hauterivian, after the deposition of Sequence IV (equivalent to the Zakum formation). Good reservoir development is found in the carbonates deposited in the high energy environment along the shelf edge of the Habshan sequence, particularly within the oblique and sigmoidal clinoforms, whereas potential source rocks are expected to be developed basinward. This combination renders the Habshan and Zakum sequences an attractive exploration target, both as structural and stratigraphic traps. Recent exploration activity in the area established the presence of hydrocarbons within the Habshan Sequence III in east onshore Abu Dhabi.

Characterization of Unique Miocene Gachsaran Formation in Relation to Prospective Shallow Biogenic Gas Resources Across Onshore Abu Dhabi, United Arab Emirates

2019 ◽  
Author(s):  
Riaz Khan ◽  
Ahmed Al Hanaee ◽  
Kate Al Tameemi ◽  
Redy Kurniawan ◽  
Neil Omonigho ◽  
...  
Keyword(s):  
United Arab Emirates ◽  
Abu Dhabi ◽  
Gachsaran Formation ◽  
Biogenic Gas

Microfacies of Abu Dhabi Lower Cretaceous Section (United Arab Emirates)

2010 ◽  
Author(s):  
Ahmed A. Abdul Ghani ◽  
Abdulla E. Al Mansoori
Keyword(s):  
United Arab Emirates ◽  
Lower Cretaceous ◽  
Abu Dhabi
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