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Register a new userA sedimentary conditions and reservoir characterization study of Juriba & transition zone formation in ELmhash structure using micro slides and geophysical well Logging
دراسة الوضع الترسيبي و الصفات الخزنية لتشكيلتي الجريبة و الانتقالية في تركيب المهاش باستخدام الشرائح المجهرية و القياسات الجيوفيزيائية البئرية
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أيمن محمد الجرذي( باحث )
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يعرض هذا البحث اسلوب جديد في دراسة الخزانات النفطية, و ذلك من خلال الجمع بين الدراسة الترسيبية, بواسطة الشرائح المجهرية و فتات العينات الصخرية من جهة, و الدراسة الخزنية, باستخدام القياسات الجيوفيزيائية البئرية من جهة أخرى. تم تطبيق هذا الاسلوب ضمن تشكيلتي الجريبة و الانتقالية في تركيب المهاش, الواقع في منخفض الفرات, في الجهة الغربية من مدينة دير الزور. دُرست في هذا التركيب خمس آبار و هي: مهاش (17-18-11-4-7).
This research highlights on new manner in study of petroleum reservoir , by integrated between a sedimentary study, which comprises micro slides from side, and geophysical well logging interpretation from another side, in Juriba & Transition zone formation, in ELmhash structure oil field , at Euphrates depression – west DER Azzor -Syria. A selection (5) wells in ELmhash structure is Mahash (17-18-11-4- 7).
References used
BATHURST,C1975-Carbonate sediment and their diagenesis. 2nd, Amsterdam, 658 p
CHILINGER,G1967,BISSEL,H1967,andWOLD,K,1967-The diagenesis of carbonate rocks.Elsevier Publ, Amsterdam, 471p
DUNHAM, R1962- Classification of Carbonate rock according to depositional texture in Ham, W. E. (ed) classification of carbonate rocks, Am. Asso. Pet. Geol. Mem. 1, pp: 108-121
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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.
many potentially prolific producers have already been plugged and
abandoned , owing to lack of adequate formation evaluation . For
example , In the early days of log analysis، it was common practice
to regard water saturations above 50% as non-com
mercial.
However, with advances in logging and seismic technology came
the realization that some of those supposedly non-commercial zones
were، in fact، highly productive pays , depending on pore-size
distributionof the rock , movable or immovable fluids and
production probability .
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.
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.
In this research we have synthesized a new macrocyclic Schiff base (II)
containing nitrogen- oxygen donor atoms which was designed and synthesized
by reaction of: 1,4– bis (6',6'- methoxy -3- formyl phenyl)-1,4- dioxa butane (I).
Identification of
this macrocyclic schiff base: (II) 1,16- Diaza–[3,6;11,14-di
(6',6'- methoxy phenyl)]-7,10,19,22 - tetraoxa cyclo tetra icozane-15,1dien was
determined by (LC-MS) and spectroscopy (IR). The liquid- liquid extraction of
metal such as Zn2+, Pb2+ and Ni2+ from aqueous phase to organic phase which
doesn't in water. The effect of chloroform and dichloromethane as organic
solvents over the metal extractions was investigated at 25± 0.10C by using
atomic absorption Spectrometer and extraction percentage was calculated.
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