ATLAS OF RESERVOIR PECULIARITIES OF THE MESOZOIC AND CENOZOIC (PALEOGENE - MIOCENE) SEDIMENTARY ROCKS OF AZERBAIJAN

I. Scientific background of the project

As it is known that the main South Caspian Basin reservoir is a Productive Series (PS). Thus, this geological complex had been paid more attention by geologists than the underlying sedimentary deposits. Particularly, the first generalized proceedings concerning the reservoir properties of the sedimentary rocks of Azerbaijan Productive Series, created in GIA in 2000 is evidence of abovementioned.

At the same time in Azerbaijan such complexes as Miocene, Oligocene, Eocene and Cretaceous have industrial oil-gas content along with the PS. From this it follows that there is a necessity in performance of complex study for determine the reservoir properties of the rocks of those complexes.

During the long history of domestic geoscience there had been accumulated a great volume of information concerning this issue. Especially valuable material had been obtained in recent years due to broadening GIA activity with overseas oil companies and scientific-research centers. All these data have isolated character, it makes difficult their perception and application as "a single whole" on the general methodological base. Thus, their analysis, systematization and generalization (like the previous proceeding concerning the PS) is timely and actual issue having scientific and applied importance.

The scientific aspect of the examined issue is that unlike the PS in the studied stratigraphic interval the oil-gas content is related not only with interpore terrigenous reservoirs but also with jointy carbonic, cavernous volcanogenic and volcanogenic-sedimentary rocks. Proceeding from that there is a necessity of comparative estimation of reservoir abilities of reservoirs of various types as well as the character of their development in various oil-gas bearing regions (OGB) of Azerbaijan.

The proposed "Atlas of reservoir peculiarities of the Mesozoic and Cenozoic (Paleogene-Miocene) of the sedimentary rocks of Azerbaijan" along with previously compiled "Atlas of reservoir properties of the productive Series, Azerbaijan" and mutually complementary, should make a complete summary of the reservoir properties of the whole sedimentary section of Azerbaijan Earth crust. From this viewpoint the present study represents a commercial interest too.

A team of experts taken part in editing of the previous "Atlas of reservoir properties of the productive Series, Azerbaijan" and having experience in investigations of such kind and corresponding practical skills is involving into the project.

II. Objective. Tasks. Information - Methodical Provision

Objective of the project is a creation of uniform data of all information collected in previous years about the reservoir peculiarities of the Mesozoic and Cenozoic (Paleogene-Miocene) rocks of Azerbaijan as an Atlas. To achieve this target it is necessary to solve the following main tasks:

• to analyze and systematize literary and fund materials for last 50 years concerning with reservoir peculiarities of the Mesozoic and Paleogene-Miocene rocks of Azerbaijan;
• precise the structure, volume and borders of separate stratons;
• download the collected data and process them with appropriate software due to uniform;
• carry out (if necessary) additional field studies of natural outcrops of the Meso-Cenozoic and respective lithofacial analyses;
• developed Atlas computer image;
• material compiling and make Atlas suitable for issuing.

The methodical base of the project, basically developed on the previous stage, rests upon the system analysis of actual data on the lithology, stratigraphy, reservoir properties of the Mesozoic deposits with attraction of additional information for each OGB as well. Unlike the previous Atlas on the productive series the authors will consider various types of reservoirs (volcanogenic-sedimentary, carbonic and terrigenous) using a great amount of high-quality thin sections as well as materials on roentgeno-, diffractometry and SEM.

III. Structure of the Atlas

The proposed Atlas will contain text body and illustrations (images) reflecting the typical sections of deposits on every OGB, cross sections, crystal-optical characteristics of rocks - thin-sections, XRD, SEM.

Each Atlas section will be corresponded to one of the studied OGB of Azerbaijan as shown in table 1 below:

Table 1. The studied oil-gas bearing regions, Azerbaijan

Section	Oil-gas bearing region
I.	Pri-Caspian - Guba
II.	Shemakha-Gobustan
III.	Evlakh-Agjabedi
IV.	Kura-Gabyrri interfluve

Every OGB will contain its own complex of the studied intervals as shown in table 2 below:

Table 2. Studied stratigraphic intervals in OGB, Azerbaijan

OGB	Intervals
Pri-Caspian - Guba
	Jurassic deposits
	Cretaceous deposits
	Eocene deposits
	Maikopian deposits
	Chokrakian deposits
Shemakha-Gobustan
	Cretaceous deposits
	Eocene deposits
	Maikopian deposits
	Chokrakian deposits
	Concian-Karaganian deposits
	Sarmatian-Meotian deposits
Evlakh-Agjabedi
	Eocene deposits
	Maikopian deposits
	Chokrakian deposits
	Sarmatian-Meotian deposits
Kura-Gabbyri interfluve
	Eocene deposits
	Oligocene-Miocene deposits

While preparing Atlas there will be used the results of analytical studies of some lithophysical parameters (grain size composition, substantial porosity, permeability, cement composition), as well as SEM analyses, roentgeno-, diffractometric analyses, etc.

IV. Group of Authors

Editorial Board

Editor-in-chief: Acad. Ali-Zadeh Ak.A.
Editor, work supervisor: Corresponding Member Guliyev I.S.
Deputy editor, executive performer: Dr. Feyzullayev A.A.
Members of editorial board: Dr. Suleimanova S.F., Dr. Atayeva E.Z., Dr. Kheirov M.B.

Authors:

Suleimanova S.F.	project conception; study coordination; sedimentological part: collection, analysis, interpretation and generalization of data on all OGB of Azerbaijan listed in Table 1
Atayeva E.Z.	stratigraphic part: collection, analysis, interpretation and generalization of data on all OGB of Azerbaijan listed in Table 1
Kheirov M.B.	sedimentological part: collection, analysis, interpretation and generalization of data on all OGB of Azerbaijan listed in Table 1

Executors:

Kuliyev K.T.	collection and analysis of material for Atlas, computer design
Ismailova G.G.	data processing
Ibragimov B.V.	data processing
Zeinalova Kh.M.	samples preparing, laboratory experiments
Guseinova Z.Sh.	material compiling, design (charts, tables, etc.)

V. Terms of carrying out the project

• Starting: September, 2002
• Completing: August, 2003

For more detailed information please contact:
Prof. Ibrahim S. Guliyev
29A H.Javid Avenue, Baku AZ1143, Azerbaijan
Phone: (99412) 439-56-19; 497-52-84
Fax: (99412) 497-52-85; 497-52-83
E-mail: [email protected]