scholarly journals Forecasting oil and gas saturation of the section based on the results of seismic survey interpretation using innovative methods on the territory of the Republic of Kazakhstan

2021 ◽  
Vol 3 (2) ◽  
pp. 27-41
Author(s):  
N. V. Амельченко ◽  
D. M. Sobolev ◽  
V. P. Kotov ◽  
S. M. Kaliev
Keyword(s):  
Oil And Gas ◽  
Spectral Characteristics ◽  
Seismic Survey ◽  
Seismic Exploration ◽  
Oil Saturation ◽  
Innovative Methods ◽  
Search Criterion ◽  
The Republic ◽  
Dynamic Processing ◽  
Hydrocarbon Deposit

Seismoacoustic entropy analysis (SAE-analysis) and the method of frequency compositions (MFC) are methods of seismic exploration aimed at solving problems of direct search for hydrocarbons based on the results of seismic exploration in promising areas. Both methods use the seismoacoustic response of a hydrocarbon deposit when interacting with the incident wave front as a search criterion. The location of the deposit is determined through dynamic processing and statistical analysis of the spectral characteristics of the wave field. The article presents the results of the forecast of oil saturation by the methods of MFC and SAE-analysis on the territory of Kazakhstan.

scholarly journals Computer model of seismic waves vertical velocity distribution for central part of the Dniprovsko-Donetsk depression

2013 ◽  
pp. 62-70
Author(s):  
P. Zagorodnyuk ◽  
G. Lisny ◽  
V. Ryumin ◽  
E. Ustenko
Keyword(s):  
Computer Model ◽  
Vertical Velocity ◽  
Seismic Waves ◽  
Oil And Gas ◽  
New Technologies ◽  
Seismic Survey ◽  
Seismic Exploration ◽  
Donets Basin ◽  
Velocity Anisotropy ◽  
Velocity Modeling

The article states the principles of layered media velocity modeling and the results of computer modeling of the value distribution of the vertical velocity of seismic waves in the central part of the Dnieper-Donets Basin. The computer model is used to integrate the seismic survey data, and to enhance the efficiency of seismic exploration for oil and gas. It is achieved through the application of new technologies for data processing with respect to velocity anisotropy, as well as through the use of traditional approaches.   

scholarly journals Integrated approach to the typification and localization of deposits of the anomalous section of the Bazhenov formation of the Frolov oil and gas region

2021 ◽  
Vol 6 (4) ◽  
pp. 12-21
Author(s):  
Olga S. Generalenko ◽  
Anastasia Y. Koltsun ◽  
Svetlana I. Isaeva ◽  
Sergey L. Tarasov ◽  
Vladimir A. Orlov
Keyword(s):  
Oil And Gas ◽  
Integrated Approach ◽  
Wave Pattern ◽  
Research Area ◽  
Seismic Survey ◽  
Seismic Exploration ◽  
Borehole Data ◽  
Bazhenov Formation ◽  
North West ◽  
The Core

Introduction. The subject of the study of this work is the deposits of the anomalous section of the Bazhenov formation (ASB) of Western Siberia, the disturbed occurrence of which was recorded by 2D, 3D seismic exploration and borehole data at many fields of the Frolov oil and gas region. The research area unites the company’s assets in the KhMAO and the Tyumen region, which are part of the large hydrocarbon cluster “ZIMA”. Aim. In order to typify various complexes of rocks of the Bazhenov formation and further localization of deposits, a comprehensive core analysis, GIS and seismic studies were performed. Materials and methods. According to the results of lithological study of the core and petrophysical interpretation of logging diagrams, have been identified various types of rocks in the interval of the Bazhenov formation. According to the results of the interpretation of the seismic survey materials, contoured zones that differ in the wave pattern by different coherence of the axes of common phase. The revealed differences in seismic sections compared with borehole data and geological bodies mapped based on the obtained patterns. Results. Based on a comprehensive interpretation of the core, GIS and seismic studies, established the zonality of the distribution of various types of deposits of the Bazhenov formation, the relationship of the development of ASB zones with the introduction of Early Cretaceous sedimentary bodies and showed the introduction of detrital material from the overlying rocks. Conclusions. The authors of the article conclude that the development of anomalous sections of the Bazhenov formation involves several stages of the introduction of landslide bodies of overlying rocks, according to the gradation of Neocomian clinocyclites in the north-west direction. Within the study area, mapped three large landslide bodies in the Bazhenov formation interval, each of which was formed an internal zonality and because of the introduction of rocks from the overlying interval.

What Will Be Next? After a Decade of Exploration Activities Towards Giant Discovery in Indonesia

2020 ◽  
Author(s):  
J. Wiratno
Keyword(s):  
Oil And Gas ◽  
Task Force ◽  
Seismic Survey ◽  
Seismic Surveys ◽  
The Road ◽  
Eastern Indonesia ◽  
The North ◽  
Road Map ◽  
The Republic ◽  
The Government

Exploration activities in a decade we're going toward making a significant contribution to the discovery of oil and gas reserves or resources in Indonesia. The success of exploration activities is a joint result of several parties including the government and Cooperation Contract Contractors under SKK Migas control. The Special Task Force for Upstream Oil and Gas Business Activities (SKK Migas) continues to take various initiatives to find giant discoveries or significant oil and gas reserves. In the road map of exploration activities, a total of around 805 wells and 127,411 km of 2D seismic surveys and 64,513 km2 of 3D seismic surveys have been carried out to search for giant discoveries over the past decade. Exploration drilling activities were mostly carried out in the Western area of Indonesia with a total of 358 wells, followed by the Kalimantan area with planned drilling of 258 wells. Then as many as 195 wells were drilled in Java and Eastern Indonesia with 115 wells. Most seismic survey activities were carried out in eastern Indonesia with a total area surveyed along 60,928 km and an area of 25,470 km2, Kalimantan 24,475 km and an area of 15,287 km2, Java along 22,4455 km and 7,969 km2, the southern Sumatra area 6,708 km and an area of 6,708 km and 4,696 km2 and the survey in the North Sumatra and Natuna area is 12,854 km and 11,091 km2. Besides, various policies have been issued to intensify exploration activities in particular to maintain the Republic of Indonesia's National Energy Security in the eyes of the World.

To the question of the breaking depressional tectonics Azerbaijan's zone according to seismic exploration data

2020 ◽  
pp. 14-20
Author(s):  
N.P. Yusubov ◽  
Keyword(s):  
Oil And Gas ◽  
Seismic Exploration ◽  
Seismic Surveys ◽  
The Past ◽  
Large Numbers ◽  
The Republic

There are very few tectonic maps of oil and gas areas of the Republic and explanatory notes to them. They contain, in large numbers, factual material and important theoretical and applied conclusions. However, the results of seismic surveys carried out over the past 25 years indicate some shortcomings in these maps. The paper provides specific examples that prove the correctness of this conclusion and recommendations for their elimi nation.

Estimation of the length of the lateral sections of the presence of hydrocarbons according to the seismic location of oil and gas (SLONG)

2020 ◽  
pp. 33-37
Author(s):  
I.S. Fayzullin ◽  
◽  
A.V. Seregin ◽  
A.V. Volkov ◽  
T.I. Fayzullin ◽  
...  
Keyword(s):  
Inverse Problem ◽  
Energy Distribution ◽  
Key Words ◽  
Oil And Gas ◽  
Spectral Characteristics ◽  
Statistical Processing ◽  
Seismic Exploration ◽  
Oil And Gas Fields ◽  
Seismic Location ◽  
Gas Fields

In the method of seismic location of oil and gas (SLONG), intended for predicting the oil and gas prospects of objects based on the data of seismic exploration method CDP-2D, the length of the laterally allocated sections of the presence of hydrocarbons is determined by statistical processing of all graphs of the energy distribution by depth of micro tremors. However, in this case, the results of processing depend on the repetition factor of impulse accumulations of fluctuations used. Therefore it is proposed to use a different approach to determine the length of the lateral sections of the presence of HC based on the processing of micro tremors recorded during CDP-2D, according to the method proposed by G.V. Vedernikov, E.A. Khagoev and T.I. Chichinina. As a result of applying this technique, it was found that all oil and gas fields are accompanied by anomalies in the micro tremors field in terms of energy and spectral characteristics of vibrations. Not stopping on the possibility of solving the inverse problem, we only note that according to this provision, the presence of a deposit should lead to anomalies in the micro tremors field and, in particular, to an increase in the energy oscillation. Therefore, if the presence of a deposit is established in any way, then we should expect the appearance of a section with an increased energy oscillation, which can be used to estimate the length of the deposit laterally. The fact of the presence of a deposit can be established by the results of processing the same CDP-2D profile using SLONG technology. If a positive SLONG result is obtained, a section with an increased energy of micro tremors should appear on the corresponding section of the profile, which will lead to the solution of the problem. Key words: Location, microtremors, length, anomaly.

scholarly journals NEW TECHNOLOGIES OF SEISMIC EXPLORATION IN UKRAINE

2021 ◽  
pp. 78-83
Author(s):  
Ivan GAFYCH ◽  
Ievgenii SOLODKYI ◽  
Sergii IARESHCHENKO ◽  
Yurii RENKAS
Keyword(s):  
Oil And Gas ◽  
New Technologies ◽  
New Technology ◽  
Pilot Project ◽  
High Density ◽  
Seismic Survey ◽  
Seismic Exploration ◽  
Mountain Areas ◽  
Oil And Gas Producers ◽  
Field Works

Development of technologies, growth of trends of reducing impact on environment and challenging tasks, which oil and gas producers face, make introduction of new technologies in seismic exploration field unavoidable. As a key tool of prospecting, exploration and reconnaissance of hydrocarbons, seismic exploration is usually restricted by terrain conditions. Urban, wooded and marshy lands, protected areas, river valleys, mountain areas often make seismic exploration impossible or signifi cantly impact its quality and efficiency.   One of the modern trends enabling resolution of the issues related to impact on environment is to switch to cable-free registration systems (wireless seismic), so called low impact seismic. Due to the use of cable-free equipment, this new technology makes it possible to reduce impact on environment during field works, as equipment is delivered to the place of installation with no special heavy machinery involved.  On the other hand, cable-free systems of seismic acquisition allow to resolve complex tasks of exploration and appraisal studies. Firstly, carry out exploration of hard-to-reach territories, including protected environmental areas, which until now remain unexplored or slightly explored. Managing seismic cables in such conditions is very complicated or impossible. Cable-free technologies allow easily resolving such issues due to both minimum impact on environment and simple and quick placement of receivers. Flexibility and easy scaling of wireless seismic adds to its advantages versus conventional survey. Kilometres of wires are not needed, which allows to easily increase the number of receiver channels and conduct high-density full azimuth seismic survey with single seismic receivers at deep structures, thus, significantly increasing quality of the data received.  The pilot project successfully completed at Khoroshivska area by joint efforts of DTEK Oil&Gas LLC and LLC Denimex Geo LLC confi rms in full advantages of wireless solutions revealing new opportunities for the use of seismic exploration at areas previously hard to reach and allowing implementation of high density acquisition projects. 

EVOLUTION OF CONCEPTS ABOUT THE STRUCTURE OF OIL AND GAS TRAPS IN THE STUDY OF PETROLEUM BEARING SUBSURFACE RESOURCES IN WESTERN YAKUTIA

2021 ◽  
pp. 49-55
Author(s):  
V. S. Sitnikov ◽  
◽  
R. F. Sevostyanova ◽  
K. A. Pavlova ◽  
◽  
...  
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Seismic Exploration ◽  
Geological Exploration ◽  
Gas Industry ◽  
Record Keeping ◽  
History Of ◽  
The Republic ◽  
Tectonic Dislocations ◽  
Gas Fields

The article presents the development history of the oil and gas industry in the Republic of Sakha (Yakutia). It is shown that during the first seismic exploration, prospecting for fields was carried out exclusively in the lower reaches of the Vilyui River. These works made it possible to identify the large Khapchagai gas region in Mesozoic deposits in the eastern Vilyui syneclise and discover a number of gas fields. Traps on them are typical platform structures - brachyanticlines with first degrees of dips, without any traces of disjunctive tectonic dislocations. The latter are predicted here lower in the section, starting from the Permian top. Scientific concepts of oil and gas traps revealed in various years in Western Yakutia in the course of geological exploration, from the period of inition of the oil and gas geophysical service in the republic (1950) to the present, are considered. The evolution of concepts of the oil and gas trap structure is shown, using the example of Srednebotuobinskoye and Verkhnevilyuchanskoye fields. This evolution was carried out in the process of geological exploration due to a more complete record-keeping of disjunctive disllocations and their role in the structure of traps.

Characterizing the Seismic Response of Naturally Fractured Basement Reservoir in Sumatra Area: Towards an Efficient Seismic Exploration Strategy

2021 ◽  
Author(s):  
P. D. Wardaya
Keyword(s):  
Oil And Gas ◽  
Graphics Processing Unit ◽  
Geophysical Methods ◽  
Computing System ◽  
Gas Production ◽  
Seismic Survey ◽  
Seismic Exploration ◽  
Fracture Plane ◽  
Processing Unit ◽  
Fracture Properties

Although only contributes few to the total oil and gas production, fractured basement reservoir is one of the important unconventional reservoirs in Indonesia. It was estimated that the gas reserve in basement in South Sumatra is about 6 TCF (trillion cubic feet). Most of the existing geophysical methods is not intended to explore events within the basement. In fact, majority of basement reservoir discovery was coincident. Despite its significant contribution to Indonesia’s gas production, the exploration success story in the fractured basement play is still poorly documented. The challenges and difficulties in their characterization are higher than the conventional reservoir. This study presents an integrated geological and geophysical approach to improve the outcome of seismic imaging of the fractured basement reservoir. A comprehensive geological study and geophysical modelling were conducted to provide an efficient strategy for designing an optimum seismic survey in imaging the fractures within the basement. Both surface and subsurface data were thoroughly analyzed to yield a reliable representation of the subsurface fracture model at basement level. Outcrop sample analysis combined with aerial remote sensing analysis were performed as input to digital outcrop modelling. The modelling was intended to provide information about fracture orientation, length, and density. This will provide a fracture property in the surface which is related to the fracture properties in subsurface. The resulting fracture properties was then used as an input to evaluate the seismic wave response during its propagation in the reservoir. Seismic modelling has been done using a 2D finite-difference full wavefield approach in a Graphics Processing Unit (GPU) accelerated computing system. We observe how fracture properties affect the propagating seismic wavefield. Wave scattering is observed more prominently around the fracture tip when the fracture plane is orthogonal to wavefield direction.

scholarly journals Oil and gas potential of the Aldan-Maya depression

Georesursy ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 63-70
Author(s):  
Alexander F. Safronov ◽  
Olga N. Chalaya ◽  
Iraida N. Zueva ◽  
Alexei I. Sivtzev
Keyword(s):  
Oil And Gas ◽  
Seismic Exploration ◽  
Geochemical Data ◽  
Western Border ◽  
Oil Seepage ◽  
The Republic ◽  
The Right ◽  
Gas Potential ◽  
Low Amplitude

The prospects of oil and gas potential of the Aldan-Maya depression, located in the south-eastern part of the Siberian platform, are considered. The lithological-stratigraphic characteristic of the Riphean-Cambrian section has been given, and the compositional features of the organic matter and its bituminous part have been considered. Based on the analysis of geological development history and the seismic exploration results (2014), the platform part territory of the Aldan-Maya depression along the western border expanded to the middle flow of the Amga River. Three main oil and gas potential reservoirs were separated in the cross section of the depression on base geological and geochemical data. The most prospective areas are the middle flow of the Ingili River (the right inflow of the Maya River), where crystal basement is on the surface (Khabarovsk region), and row anticline structures at adjacent platform part near the Aldan-Amga interfluve of the Republic of Sakha (Yakutia). According to the seismic exploration data of “Yakutskgeofizika” OJSC (2014-2016), six local low-amplitude structures of submeridional strike were identified: Belkachy, Bilir, Taryng-Elga, South-Bilir, Mil, Taryng. In our opinion the Belkachy local structure located on the western margin of the Aldan-Maya depression could be the most prospective object. In its western pericline, an oil seepage is detected on the surface. In conclusion we suggest at a long-term perspective to prolong research on oil and gas potential of the upper part of the Malgin suite of the Middle Riphean as a prospective area of shale oil and gas.

scholarly journals Joint analysis of seismic and well log data applied for prediction of oil presence in Maykop deposits in Naftalan area

2021 ◽  
Vol 7 (3) ◽  
pp. 331-337
Author(s):  
Maleyka Agha Ali Aghayeva ◽  
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Well Logging ◽  
Oil Field ◽  
Seismic Survey ◽  
Joint Analysis ◽  
3D Seismic ◽  
Oil Saturation ◽  
North East ◽  
Joint Application

<abstract> <p>The paper is devoted to joint application of 3D seismic survey and well logging techniques to study oil and gas presence in Maykop deposits in Naftalan oil field. The field is located in Naftalan-Northern Naftalan area of Ganja oil and gas province, Azerbaijan. The paper brings data about Naftalan field, the ancient brachianticline type of field in Azerbaijan. The paper also considers the history of study of the field by use of geological and geophysical techniques. Despite the studies cover the area since 1873, the oil and gas presence in Maykop has not been studied sufficiently due to sparse network of wells and insufficient amount of core samples. To avoid this gap the results of previous studies have been revised. Joint interpretation of well logging data acquired from 22 wells and data of 3D seismic survey covering the area has been done. On the basis of oil-saturation cube, we have designed the map (the area between the top and the foot of I horizon of Maykop) and 3D model of target interval. It has been defined that uneven distribution of oil saturation and poor oil recovery depends also on sedimentation environment, characterized by rapid subsidence of the basin and increasing amount of clay in the process of sedimentation. Our studies revealed that the average value of oil saturation varies as 0.5–0.6 and increases towards the North-East of the study area. In the final stage of the study we have presented the oil saturation cube and the map drawn on the basis of this cube.</p> </abstract>

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