Lithologic Reservoirs

The sixth member of Yanchang Formation of Upper Triassic is the major exploration target zone in Baibao area,Ordos Basin,which is typical lithologic-stratigraphic reservoir.The data ofthe castslice,SEM ,electron probe and other tests combining with the analysis of core and sedimentary facies were applied to analyze the diagenesis of Chang 6 sandstone reservoirs.It showed that the destructive diageneses m ainly include compaction-pressure solution, cementation and packing action,and that the constructive diageneses mainly include rim agglutination of chlorite and dolomite at the early stage,denudation and cataclasis.A ccording to the association types and evolutionary sequences of the diagenesis pattern,it is concluded thatthe diagenetic evolution of Chang 6 sandstone has already been in stage B of the middle diagenetic stage.Based on the diagenetic evolution pattern,the diagenetic facies was studied,and it could be divided into three types, including compaction-cementation diagenetic facies association, compaction diagenetic facies association and cementation-denudation diagenetic facies association.The relationship between these diagenetic facies association and reservoir development，as well as the regional distribution were analyzed，which could provide reference for the reservoir-forming analysis and reservoir prediction of lithologic-stratigraphic reservoirs.

“Multi-factor controlling, four-factor entrapping and key-factor enrichment”of stratigraphic-lithologic reservoir sand exploration practice in Erlian Basin(Ⅰ)——“Multi-factor controlling”mechanism

ZHAO Xianzheng,JIN Fengming,LIU Zhen,ZHANG Yiming,WANG Quan,HAN Chunyuan

2007, Vol.19(2): 9–15 Abstract ( 467 ) PDF (1000 KB) ( 446 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.002

Exploration of stratigraphic-lithologic reservoirs in Erlian Basin has made a significant breakthrough. 30~50 million tons of oil reserves have been found from stratigraphic-lithologic reservoirs in several middle- small fault sags with area of 1 000 to 2 000 km2. According to the exploration and geologic research, it showed that the forming, distribution and enrichment of the stratigraphic- lithologic reservoirs are characterized by“Multi-factor controlling, four - factor entrapping and key- factor enrichment”. The forming and distribution of sand body are controlled by the types of the structural belt, contemporaneous fault, system tract, slope break belt and sedimentary facies. The accumulation of the sand body traps is restricted by four factors, including hydrocarbon migration pathway, hydrodynamic force, critical physical property of reservoir and confining factor of sand bodies. The enrichment of the stratigraphic- lithologic reservoirs is controlled by three key factors, including abundant oil sources, high quality sand body traps and main confluent passageway.

Research on the heterogeneous distribution of petroleum(Ⅰ)

LIN Chengyan, TAN Lijuan, YU Cuiling

2007, Vol.19(2): 16–21 Abstract ( 470 ) PDF (171 KB) ( 658 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.003

On the basis of the current research on the hydrocarbon accumulation theory and hydrocarbon distribution rules, the theory of hydrocarbon heterogeneous distribution was definitely put forward. The effect factors and the forming mechanisms for the hydrocarbon heterogeneous distribution have been discussed in detail. The heterogeneous distribution of hydrocarbon has several levels, of which the main affecting factors are different. In sub-depressions, oil source and trap conditions were the main factors controlling heterogeneous distribution of petroleum macroscopically. In the secondary block, the heterogeneous distribution is controlled by oil source, structural conditions, in addition to the reservoir heterogeneity. The heterogeneous distribution of single sand body or the interior reservoir was resulted from reservoir heterogeneity. The idea that reservoir heterogeneity affects the hydrocarbon accumulation and leads to heterogeneous hydrocarbon distribution was stressed here. The phenomenon that hydrocarbons distribute heterogeneously in different scale is universal and objective, and it is even obvious in the subtle and complex reservoirs, including lithologic reservoirs and buried- hill reservoirs and so on. The presentation about the theory of hydrocarbon heterogeneous distribution takes a significant part in the exploration of lithologic reservoirs and complex reservoirs, and the fine exploration and development in high - degree exploratory areas.

Fine oil exploration of Putaohua Formation in Xujiaweizi area, Songliao Basin

WANG Tianqi, WANG Jiangong, LIANG Sujuan, SHA Xuemei

2007, Vol.19(2): 22–27 Abstract ( 403 ) PDF (872 KB) ( 645 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.004

With the exploration difficulty increasing, the fine exploration becomes more and more important to the oilfields, especially the eastern old oilfields in China. The authors analyzed the method of the fine exploration in the old oilfields based on the research of Putaohua Formation in Xujiaweizi area, Songliao Basin, divided the targets in vertical direction, and carried out sedimentary microfacies study to make clear the distribution of the target reservoir by using seismic reservoir inversion and logging facies analysis. By overlapping 3D fine structural map and reservoir distribution map, the targets were synthetically analyzed according to the lithologic reservoirs exploration method, which proved a good exploration effect.

Sedimentary mode of shallow lacustr ine delta of large continental basin———An example from Putaohua Formation in nor thern Songliao Basin

WANG Jiangong，WANG Tianqi，WEI Pingsheng，LIANG Sujuan，HAN Xiaoqiang

2007, Vol.19(2): 28–34 Abstract ( 600 ) PDF (1508 KB) ( 667 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.005

Based on the study of the high resolution sequence stratigraphy of Putaohua Formation referred to the data of core, seismic, well logging and laboratory test, the regional distribution of sedimentary facies and the characteristics of microfacies were discussed. It was presented that Putaohua Formation is shallow lacustrine delta deposit which is mainly composed of delta fore- facies zone and differs from typical delta deposit mode in three aspects, including that: fore delta zone spread over the whole lake basin, being exposed frequently above water level, with deep and semi -deep lacustrine facies relatively undeveloped; distributary channels were sheeted by lake water, and were divided into three types, including poorly sheeted, moderately sheeted and intensely sheeted; being without topset bed, foreset bed and bottomset bed, sedimentary mode of shallow lacustrine delta differs from typical Gilbert delta deposit. The distribution mode of shallow lacustrine delta fore- facies zone was established based on the sedimentary characteristics of different system tracts ( LST, TST, HST) , represented in lobate delta, braided stream delta and branched delta modes respectively.

Core and lithofacies analysis and architectural elements of Fuyang Formation in Gaotaizi area，Songliao Basin

DU Haifeng，YU Xinghe

2007, Vol.19(2): 35–40 Abstract ( 380 ) PDF (424 KB) ( 651 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.006

Fuyang Formation in Gaotaizi area，Songliao Basin is typical shallow water continental delta deposits. These deposits are mainly composed of delta plain distributary channel and delta front subsea distributary channel，and similar to river deposit. Based on the study on the target layer by Miall′s structural element analysis, thirteen types of basic lithofacies were identified, depositional interface from 1st to 5th order were identified in the core deposit, and seven kinds of architectural elements with genetic value were divided，including distributary channel, downcurrent accretion bed form, lateral accretion deposit, single lateral depositional bed, laminated sand sheet, sand bed form and overbank fine sediment. These elements provide evidence for the sedimentary study on Fuyang Formation.

The formation conditions and main controlling factors of Jurassic lithologic reservoirs in Cheguai area, Junggar Basin

TAN Kaijun, PAN Jianguo, YAO Qingzhou, WANG Yanjun, YIN Lu,REN Peigang, LI Dezi, HUANG Yu

2007, Vol.19(2): 41–44 Abstract ( 439 ) PDF (543 KB) ( 723 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.007

The progress of oil reservoir exploration in Cheguai area is slow according to the exploration strategy of fault block reservoirs in recent years. Based on the analysis of sedimentary system and fracture system, the Jurassic in the area is favorable for forming lithologic reservoirs. The result indicated that the high point of palaeohigh is favorable for stratigraphic trap formation, and the combination of sub latitudinal fault, longitudinal sedimentary system and nose- shaped structure turning northwest are good for forming fault- stratigraphic trap and fault - lithologic trap; Badaowan Formation of LST and San′gonghe Formation of HST are the most prospecting formations; delta front below slope break belt is the most favorable area; translocation system is the dominant factor for the forming of Jurassic lithologic reservoirs.

Hydrocarbon accumulation and r elated differ ential thrust system in western Taibei Sag

LIU Huchuang,WANG Wenhui,CHEN Junnan

2007, Vol.19(2): 45–49 Abstract ( 375 ) PDF (485 KB) ( 533 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.008

Differential thrust system formed in late period of tectonic activity in western Taibei Sag has a close relationship with structural framework, hydrocarbon migration and accumulation in this area. Near east -west direction thrust fault system and north- south direction strike- slip fault system divide the western area into several chess-board structural blocks. East -west direction thrust fault system obstructs oil/gas and controls hydrocarbon distribution, while north- south direction strike- slip fault system plays a role in communicating deep oil/gas, which makes the vertical migration and seals oil/gas to form reservoir block. The depositional thickness of the main hydrocarbon bearing sands varies greatly, which makes the joint of the sand and mud possible. Both the strikeslip fault and lithologies are responsible for the forming of structural- lithologic reservoirs in western Taibei, with the influence of lateral lithological pinchout or disconnected sand body. According to differential thrust system and hydrocarbon distribution rules, a great exploration potential is predicted in faulted fold zone in the middle sag and thrust anticline and fault bench in piedmont of northern sag.

The depositional mechanism and lithologic reservoir s of thick sand bodies in the third member of Qingshankou Formation, Haituozi-Dabusu area

TANG Zhenxing，YANG Guang，HUANG Mingzhi，ZHANG Juhong，SONG Lei，MA Lin，DING Ye

2007, Vol.19(2): 50–52 Abstract ( 414 ) PDF (1125 KB) ( 520 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.009

Based on the synthetic seismogram calibration and seismic attribute analysis, a series of thick sand bodies developed in the third member of Qingshankou Formation in Haituozi -Dabusu area, southern SongLiao Basin were characterized by banded sedimentary characteristics of long, straight and narrow shape. There are some assumptions for their genesis proposed by many scholars, such as aeolation, tide, fluviation and slump, but none of them could interpret the distribution features accurately. This result showed that Haituozi-Dabusu area is located in slope break belt, with large terrain drop height and intense fluent vertical erosion, which caused erosion to the substratum, then formed the deep and narrow lake rim canyons which control the deposit of the sand bodies and result in the banded sedimentary characteristics. The combining of the sand bodies and faults in updip direction could possibly form fault- lithologic reservoirs.

Characteristics and accumulation of Paleozoic volcanic rock reservoirs in Hongche fault belt, Junggar Basin

PAN Jianguo，HAO Fang，TANKaijun，W EI Pingsheng，REN Peigang，CHEN Yongbo，YIN Lu

2007, Vol.19(2): 53–56 Abstract ( 495 ) PDF (769 KB) ( 518 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.010

With the development of exploration, more and more volcanic rock reservoirs discovered have become important for the petroleum exploration and development in northwestern margin of Junggar Basin. Paleozoic volcanic rock in Hongche fault belt is an important filed for the next exploration. Based on the analysis of the types, characteristics of the reservoir and seal rocks of the volcanic rock reservoirs in this area, it indicated that the structural environments, lithofacies characteristics, fracture development and the preservation conditions are the four main key factors for the hydrocarbon accumulation, which is advantageous for the evaluation and exploration deployment.

Reservoir-forming mechanism of low-permeability reservoir of Fuyu Formation in southern Songliao Basin

SONG Lizhong, LIB encai, WANG Fang

2007, Vol.19(2): 57–61 Abstract ( 536 ) PDF (260 KB) ( 540 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.011

The reservoir- forming mechanism of Fuyu Formation in southern Songliao Basin was studied from the aspects of depositional reservoir character, overpressure of source rock, power of hydrocarbon migration and hydrocarbon distribution. According to this result，the vertical migration mode of low- permeability reservoir and the reservoir - forming pattern of overpressure controlled lithologic reservoirs are established, by which a great exploration potential of low-permeability reservoir is forecasted, and it has great significance in the guidance of exploration in this area.

The research and application of lithologic hydrocarbon reservoirs prediction in sedimentary system tract:An example from Mesozoic Yanchang Formation in northern Ordos Basin

CHEN Yongbo,YONG Xueshan,LIU Huaqing

2007, Vol.19(2): 62–66 Abstract ( 454 ) PDF (369 KB) ( 495 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.012

Referring to the master factors of lithologic hydrocarbon reservoirs of Yanchang Formation, the authors make full use of the effective seismic information on the basis of the curve lines in Huangtuyuan area to carry out seismic reservoir lateral prediction in target stratum. Five methods summarized according to the identification of the permeable sandstone distribution section and plane figures of permeable sandstone distribution provide some evidences for drilling location. The late drilled well assessment proves that the coincidence rate of the permeable sand thickness prediction is over 80%.

Using conventional well logging data to calculate the shear wave velocity of gas reservoir

LI Jinggong

2007, Vol.19(2): 67–70 Abstract ( 443 ) PDF (2104 KB) ( 722 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.013

The data of shear wave takes a very significant part in reservoir description and oil & gas prediction. It' s difficult to deal with seismic acoustic forward modeling and seismic inversion for the absence of shear wave data usually. The shear wave model of one gas reservoir was established in sand shale profile by using shale content, porosity and water saturation etc. calculated by standard well data such as acoustic wave, density, resistivity and natural gamma- ray curves. This method provides a new way to calculate the shear wave velocity of gas reservoir.

Application of comprehensive identification method in low-resistivity hydrocarbon reservoir exploration

ZHENG Leiqing

2007, Vol.19(2): 71–75 Abstract ( 405 ) PDF (1563 KB) ( 407 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.014

In recent year, with the expanding petroleum exploration, lithologic hydrocarbon reservoir has become the key for the further oil & gas exploration. Because of its inherent characteristics, such as low resistivity, little difference from water layer electric property, and low oil saturation etc., there are many difficulties in the reservoir prediction and the identification of the water/oil bed. Based on the analysis of geologic features of lowresistivity hydrocarbon reservoir and formation mechanism, referred to the origin, the geological logging and well logging data of low- resistivity hydrocarbon reservoir in northern Taibei, Tuha Basin were studied. A set of comprehensive methods that could be used to identify low - resistivity reservoir was put forward, which is significant for the future reservoir interpretation and evaluation.

Analysis and improvement of window function of gener alized S-transform

LIU Lijuan,WANG Shanshan

2007, Vol.19(2): 76–79 Abstract ( 487 ) PDF (714 KB) ( 679 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.015

Seismic signal is a kind of nonlinear and non-stationary signal. Using time-frequency analysis to process seismic signal could reserve the primary information maximally and accurately analyze the characteristics of the data in time-frequency domain. At present, there are many kinds of time-frequency analysis methods applied to seismic data processing. Based on the comparison of S-transform and generalized S-transform, the window function of generalized S-transform was analyzed in detail. The result showed that the controlled variable of window function could be simplified. The computational solution of the actual data proved that the effects of the simplified transform are equal to the generalized S-transform.

Study on sedimentary facies by seismic multiple techniques in the eighth member of Shihezi Formation, Sulig Gas Field

LIU Jianxin,YONG Xueshan,WU Huiliang,LIU Junying,ZHANG Jijuan,GUO Xuan

2007, Vol.19(2): 80–83 Abstract ( 405 ) PDF (534 KB) ( 607 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.016

The reservoir in the eighth member of lower Shihezi Formation in Sulig Gas Field is typical braid river sedimentary system. Drilling wells in 3D multiwave multicomponent work area in northern Sulig Gas Field are little. Based on the well data and the analysis of the palaeogeomorphology, the sedimentary facies were studied with applying the analysis techniques of Stratimagic seismic facies, seismic multi - attribute and relative wave impedance. The result showed that the whole work area is braid river sedimentary system which develops braided channel and flood plain deposit microfacies, and that the provenance come from northern work area where there are three main channels in NS direction, and several distributary channels developed. The development of the western main channels is the biggest, and the western channels show obvious convergence.

Automatic mapping based on well data

LI Zaiguang,LI Lin

2007, Vol.19(2): 84–89 Abstract ( 407 ) PDF (400 KB) ( 524 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.017

Volumes of well data are involved in both hydrocarbon reservoir descriptions and reservoir predictions. It is necessary to study well data deeply for geological researches and expressions of geologic viewpoints. The authors present the process of generating the maps automatically based on well data in AutoCAD to save time and the cost of mapping so as to improve the quality of the study.

Reef limestone features and modeling approach of massive reservoir

HU Guangyi,GU Li,WANG Fuli

2007, Vol.19(2): 90–92 Abstract ( 431 ) PDF (859 KB) ( 694 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.018

LH4 - 1 Oilfield is a heavy oil field developed from the basis of the bioherm of Miocene Zhujiang Formation. Biohermal limestone is a kind of massive carbonate reservoir rock formed in marine environment. Based on the reservoir distribution studied with the genesis of the reef limestone and seismic attribute, the geologic modelings of block geologic body and vertical aggraded clastic reservoir were indicated. A set of technical methods for geologic modeling suitable to massive reservoir was studied. These methods have proved a good effect.

Using seismic attributes to identify channel sand body

CAO Qingrong，LI Pei，SUN Kai，LI Nan

2007, Vol.19(2): 93–96 Abstract ( 547 ) PDF (880 KB) ( 605 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.019

Lithologic reservoir has been the main reservoir type in shallow and middle strata exploration in southern Songliao Basin，but the identification of channel sand body is stilla challenge for the geophysical researchers for a long time.On the basis of 3D seismic newly finished in Chahuagan area and the new idea of“searching for river rather than sand，then river for sand”，calibrating the target is to carry out the interpretation accurately. Using seismic attributes analysis technique to divide seismic facies and identify the stream channel in order to find out the channel sand body was carried out.The results howed that it is possible to identify the stream channel by using the seismic attributes under the semi-shallow and shallow lake sedimentary environments，and that the lateral information ofthe seismic data supports the vertical resolution.This technique makes a high oil production.

The interpretation method and application effect determined by multiple seismic and logging factors

CHENG Yuhong,GUO Yanru,ZHENG Ximing,FANG Naizhen,MA Yuhu

2007, Vol.19(2): 97–101 Abstract ( 370 ) PDF (1264 KB) ( 464 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.020

The interpretation is difficult because of the low signal- to- noise caused by the thick loess deposited in Ordos Basin. The authors choose the mid- lower part of Yanchang Formation in Yanding area to demarcate and interpret seismic data accurately and control its quality with using lithology interpretation and electrical analysis of drilling. This process improves the quality and precision of the sequence stratigraphic division map, sedimentary facies map, sandstone thickness map, structural map and so on. The good results have been achieved in the risk exploration in Yanding area.

Discussion on geologic modeling with Petrel

DUAN Tianxiang,LIU Xiaomei,ZHANG Yajun,XIAO Shuqin

2007, Vol.19(2): 102–107 Abstract ( 510 ) PDF (367 KB) ( 848 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.021

As the key in the process of reservoir modeling, facies modeling provides reservoir framework for the simulation of the reservoir parameters. Based on the analysis of several commonly used facies modeling, it was presented that using shale content and comprehensive well log interpretation to reconfigure lithofacies in lithofacies modeling, which is available for the work area without sufficient accurate sedimentary microfacies study. The principle and importance of the variogram were expounded. A set of effective methods was suggested referred to the problems occurred in the process of variogram calculation. The effectiveness of these methods has been proved in practice.

Using natural gamma-ray spectroscopy log method to determine clay mineral content

WANG Zhuwen,LIU Jinghua,HUANG Qian

2007, Vol.19(2): 108–111 Abstract ( 417 ) PDF (265 KB) ( 799 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.022

Clay mineral is an important component part of reservoir, and its content and feature have a great effect on oil field development. The identification of the clay mineral types by using natural gamma- ray spectroscopy log method was discussed. The result showed that using natural gamma- ray spectroscopy log could not only identify the types of the clay mineral, but also determine the content of the clay mineral in the reservoir, which could provide effective reference for the development plan of oil field.

The coupling computation and test optimization of wellbore pipe-flow and stratum filtering flow in condensate reservoir

GUO Kangliang,ZHUANG Xinbing,ZHANG Wenchang

2007, Vol.19(2): 112–116 Abstract ( 404 ) PDF (347 KB) ( 659 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.023

Both the testing and production system of the condensate reservoir are influenced by reservoir, wellbore and surface pipeline. At present, the lack of attention on the production effected by retrograde condensation and old techniques used in studying condensate reservoir resulted in irrational testing and work regulations, low and inefficient production. Based on the accurate analysis of the influence on the production of condensate reservoir caused by retrograde condensation, the method for studying condensate reservoir was changed according to the coupling computation model established to the multiphase wellbore pipe - flow and stratum filtering flow, which provides theory support for the testing and single well optimization analysis.

About basic research of petroleum seismic prospecting

YU Changqing,YANG Wuyang,YANG Wencai

2007, Vol.19(2): 117–120 Abstract ( 424 ) PDF (113 KB) ( 836 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.024

On the basis of the analysis of the current energy situation and oil-gas exploration, the current basic research about reflection seismology involved in petroleum exploration in China were discussed, such as how to explore deep oil-gas fields in large sedimentary basin, topographic interference wave suppression, seismic signal bandspread, direct prediction of oil-gas field and cross- hole seismic tomography. The essential target presented for current oil-gas seismic prospecting basic research is to develop the fourth generation of oil-gas seismic prospecting processing and quantitative interpretation techniques, as well as improve the seismic wave field prestack migration imaging.

Distribution and controlling factors of hydrocarbon reservoirs in continental fault basins

LIU Zhen,CHEN Yanpeng,ZHAO Yang,HAO Qi,XU Xiaoming,CHANG Mai

2007, Vol.19(2): 121–127 Abstract ( 438 ) PDF (899 KB) ( 546 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.025

In recent years,with the development of oil and gas exploration in continental fault basins in eastern China, continental oil geology theory has gradually formed with the representation of“Continental Oil Generation”and“Source Control Theory”. From the former anticlinal reservoir exploration to nowadays subtle reservoir exploration, the hydrocarbon formation and distribution rules of continental fault basin can be divided into four historical stages：1960′s ~1970′s，“Source Control Theory”，proposed on the basis of the discovery of Daqing Oilfield; in 1980′s“, composite zones of hydrocarbon accumulation theory”based on the exploration achievements in continental fault basins, especially Bohai Bay Basin; in 1990′s，“oil accumulation around the sag”concluded by the geologists during the exploration in Shenli Oilfield；till now, new viewpoints of“complementarity characteristics”（2003），“predominance characteristics”（2005），“multi-factor controlling and key- factor entrapping”( 2006) presented during the study on the subtle reservoir exploration in Erlian Basin. All these viewpoints not only take a significant part in the exploration in continental fault basins, but also improve the oil geology theory with the representation of “Continental Oil Generation”.

Cultivation of the creative thought in petroleum exploration

ZHANG Xia

2007, Vol.19(2): 128–133 Abstract ( 353 ) PDF (169 KB) ( 401 )

doi: https://doi.org/10.3969/j.issn.1673-8926.2007.02.026

It is necessary to grasp the essence and principle for the cultivation of the creative thought. The author presented a series of methods，such as overcoming the fixed thought, strengthening imagination, broadening knowledge, strengthening intuition, cultivating attention, developing the habit of analysis, focusing and studying urgent problems, optimizing scientific research organizations.