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Register a new userTectono- Seismic study of Kurachine dolomite in Sadad structure- Al- Daw depression
دراسة تكتونو – سيزمية لتشكيلة الكوراشينا دولوميت في تركيب صدد – حوض الدو
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Aِl-Baath University ورقة بحثية
Publication date
2018
fields
Geology
and research's language is
العربية
Created by
Shamra Editor
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نستعرض في هذه الورقة النتائج التي تم الحصول عليها من خلال الدراسات المنفذة فيما يخص الوضع التكتوني العميق لتشكيلة الكوراشينا دولوميت من خلال المقاطع السيزمية المفسرة من قبلنا، و انشاء خرائط زمنية و عمقية لهذه التشكيلة، و من ثم اقتراح بئر يُفترض أن تكون مأمولة هيدروكربونياً في ضوء المعطيات الحديثة.
In this paper, we will shed light on the applied studies results in special of deep tectonic situation of the Kurachine dolomite formation through the seismic sections explained by us, and establish time and depth maps for this formation, and proposing a well that is supposed to be hydrocarbon potential in the light of modern data.
References used
Al Abdalla,A.(2008) – Tictonic evalution of Arabian plate in Syria since Mesozoic , PhD thesis. Paris, France. 302p
Cavazza, W., Roure, F., Spakman, Stampfli, G.M. and Ziegler, P.A., eds. (2004a) - The TRANSMED Atlas: The Mediterranean Region form Crust to Mantle: Heidelberg, Springer-Verlag, 141 pp. + CD-ROM
Beydoun,Z.R. (1991) – Arabian plate hydrocarbon geology and potential , a plate tectonic approach. American Association of geology, studies in geology. Geologist Bulletin, v77, pp 173-193
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Abo Rabah is one of the most important structures in the Al- Daw
basin, because of the great tectonic complexity that has been
exposed during the geological history, and being one of the most
important gas producing areas in Syria. That explains t
he
importance of its study. Our applied studies indicates that there is
significant variation in salt thickness depending on sedimentation
and tectonic factors, which directly affects the kurachine dolomite
gas reservoir, Here lies the importance of this paper.
This research aims to study the sedimentary and palaeogeographic
evolution of the Kurachina Dolomite Formation along Palmyrian belt zone.
Studying this formation in its Northern and Southern parts has shown that it
consists of two lithostratigraph
ic members, where each of them includes a
series of lithological units. The petrological study of the components of these
units shows that they are composed of four distinguished facies: Dolomitic
limestones, clayey limestones, clays and anhydrites, pure or mixed, and
deposited in repeated harmonic layers, gathered mostly in neutral sedimentary
sequences. Dolomitic limestones are the most common and important facies,
they are composed of micrite muds which have been subjected, in different
degrees to synsedimentary or late dolomitisation processes through pumping or
burial mechanisms. Dolomitisation intensity decreases downward the formation
and increases laterally from the south to the north of the Palmyrian chain.
Palmira chain is one of the most important structures in the Middle
East. Structurally, It's divided into Northern and southern Palmyras,
and between them AL- Daw basin lies. The importance of the
Palmira chain is related to its way of forming, ev
aluating through
the geologic time, and structures those containing oil and gas.
Therefor this paper takes high importance, because the tectonic
active of regional and local faults systems in the oil reservoirs.
Thus we'll focus on the tectonic situation on the studied region
structures, and its effect on the surface and subsurface rock lyres,
using the seismic profiles data. In conclusion, We'll justificate the
dryness of some drilled wells, and suggesting some directions to
guide the future oil exploring.
All the well logging reinterpretation by using the new softwares, cores
analysis and results of seismic 2D and 3D surveys allowed to identify the
reservoir characteristics of Kurachina Dolomite Formation of middle Triassic,
for two zones (C2, D1)
in Jihar field and its affect on hydrocarbon potential in
this area.
It's found that C2 reservoir consist mostly of dolomite and small amount of
shale and anhydrite, fractured and all the fractures are full of organic
materials, calcite, anhydrite, silica and little amount of stilolite, while there is
succession of limestone and fossil remains, in some places there is shally
dolomite. Whereas D1 reservoir is mostly crystalline limestone and the
fractures filled with dolomite.
The available seismic data of Mamlaht Al-Kom field were reinterpreted in
order to define some petroleum potential reflections. The study focused on
Korushina Dolomite (K.D) reflector because of its properties that indicate α
hydrocarbon potential.
Therefore the time map of this formation was
canstructed, structure was defined and the hydrocarbon potential is discussed.
According to the obtained data, we ensure the presence hydrocarbon
potential of the K. D formation, because of its suitable thickness, availability of
cover, and the source rocks. These results should be verified by a 3D surveys
and then drilling operations.
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