Application of Embedded Linux Interprocess Communication Technology in the Seismic Exploration

2013 ◽  
Vol 427-429 ◽  
pp. 2138-2142
Author(s):  
Liang Tian ◽  
Qi Sheng Zhang ◽  
Qi Mao Zhang

Oil and gas resource as the most important part of energysource compositionits in China, its seismic exploration and development has great significance. And this requires development of new generation of high-precision digital telemetry seismograph. Shared memory, the common telecommunication mode between Linux processes becomes the preferred interaction means between applications of seismic exploration for its controlled capacity and speedy interaction rate. This article describes the stacked power station being constructed by the embedded microprocessor PPC405 and FPGA chip, as well as the transplantation of U-boot, Kernel and file system, the development of inter-process communication application on basis of shared memory, and finally the network interaction of telemetering digital seismic power station.

2021 ◽  
Vol 140 ◽  
pp. 105284
Author(s):  
Chizubem Benson ◽  
Christos Dimopoulos ◽  
Christos D. Argyropoulos ◽  
Cleo Varianou Mikellidou ◽  
Georgios Boustras

2007 ◽  
Vol 85 (11) ◽  
pp. 1091-1116 ◽  
Author(s):  
L.S. Weilgart

Ocean noise pollution is of special concern for cetaceans, as they are highly dependent on sound as their principal sense. Sound travels very efficiently underwater, so the potential area impacted can be thousands of square kilometres or more. The principal anthropogenic noise sources are underwater explosions (nuclear and otherwise), shipping, seismic exploration by mainly the oil and gas industries, and naval sonar operations. Strandings and mortalities of especially beaked whales (family Ziphiidae) have in many cases been conclusively linked to noise events such as naval maneuvers involving tactical sonars or seismic surveys, though other cetacean species may also be involved. The mechanisms behind this mortality are still unknown, but are most likely related to gas and fat emboli at least partially mediated by a behavioral response, such as a change in diving pattern. Estimated received sound levels in these events are typically not high enough to cause hearing damage, implying that the auditory system may not always be the best indicator for noise impacts. Beaked whales are found in small, possibly genetically isolated, local populations that are resident year-round. Thus, even transient and localized acoustic impacts can have prolonged and serious population consequences, as may have occurred following at least one stranding. Populations may also be threatened by noise through reactions such as increased stress levels, abandonment of important habitat, and “masking” or the obscuring of natural sounds. Documented changes in vocal behavior may lead to reductions in foraging efficiency or mating opportunities. Responses are highly variable between species, age classes, behavioral states, etc., making extrapolations problematic. Also, short-term responses may not be good proxies of long-term population-level impacts. There are many examples of apparent tolerance of noise by cetaceans, however. Noise can also affect cetaceans indirectly through their prey. Fish show permanent and temporary hearing loss, reduced catch rates, stress, and behavioral reactions to noise. Management implications of noise impacts include difficulties in establishing “safe” exposure levels, shortcomings of some mitigation tools, the need for precaution in the form of reducing noise levels and distancing noise from biologically important areas, and the role of marine protected areas and monitoring in safeguarding cetaceans especially from cumulative and synergistic effects.


2000 ◽  
Vol 36 (2) ◽  
pp. 93-96
Author(s):  
O. P. Lykov ◽  
S. A. Nizova ◽  
S. P. Valueva ◽  
M. A. Silin ◽  
E. E. Yanchenko

2021 ◽  
pp. 23-31
Author(s):  
Y. I. Gladysheva

Nadym-Pursk oil and gas region has been one of the main areas for the production of hydrocarbon raw materials since the sixties of the last century. A significant part of hydrocarbon deposits is at the final stage of field development. An increase in gas and oil production is possible subject to the discovery of new fields. The search for new hydrocarbon deposits must be carried out taking into account an integrated research approach, primarily the interpretation of seismic exploration, the creation of geological models of sedimentary basins, the study of geodynamic processes and thermobaric parameters. Statistical analysis of geological parameters of oil and gas bearing complexes revealed that the most promising direction of search are active zones — blocks with the maximum sedimentary section and accumulation rate. In these zones abnormal reservoir pressures and high reservoir temperatures are recorded. The Cretaceous oil and gas megacomplex is one of the main prospecting targets. New discovery of hydrocarbon deposits are associated with both additional exploration of old fields and the search for new prospects on the shelf of the north. An important area of geological exploration is the productive layer of the Lower-Berezovskaya subformation, in which gas deposits were discovered in unconventional reservoirs.


2021 ◽  
pp. 13-22
Author(s):  
R. M. Bembel ◽  
S. R. Bembel ◽  
M. I. Zaboeva ◽  
E. E. Levitina

Based on the well-known results of studies of the ether-geosoliton concept of the growing Earth, the article presents the conclusions that made it possible to propose a model of thermonuclear synthesis of chemical elements that form renewable reserves of developed oil and gas fields. It was revealed that local zones of abnormally high production rates of production wells and, accordingly, large cumulative production at developed fields in Western Siberia are due to the restoration of recoverable reserves due to geosoliton degassing. Therefore, when interpreting the results of geological and geophysical studies, it is necessary to pay attention to the identified geosoliton degassing channels, since in the works of R. M. Bembel and others found that they contributed to the formation of a number of hydrocarbon deposits in Western Siberia. When interpreting the results of geological-geophysical and physicochemical studies of the fields being developed, it is recommended to study the data of the ring high-resolution seismic exploration technology in order to identify unique areas of renewable reserves, which can significantly increase the component yield of hydrocarbon deposits.


2018 ◽  
Vol 6 (4) ◽  
pp. SM39-SM50
Author(s):  
Jingbo Wang ◽  
Zhongshan Qi ◽  
Penggui Jing ◽  
Tianfa Zheng ◽  
Yanqi Li ◽  
...  

Geologic studies indicate that the platform-margin reef-shallow facies in Permo-Triassic marine strata in the Micang-Dabashan foothill belt in the Sichuan Basin are favorable exploration targets for oil and gas exploration. However, the typical dual-complexity problem (complex surface condition and subsurface structure) brings a great challenge for seismic technology targeting of those potential oil and gas reservoirs. To overcome this problem, varieties of advanced seismic acquisition and processing methods have been used to improve the imaging quality of piedmont seismic data since 2000. Some improvements have been achieved: The reflection waves from the far offset and deep layer can be acquired in shot gathers from limestone outcropped areas, and the signal-to-noise ratio (S/N) of reflection and diffraction waves in the stack section has been enhanced significantly so as to reveal amounts of valuable geologic information. The resolution and the S/N of seismic migration imaging for the strong fold zone in marine strata have been improved partially, so that the structure of the step-fault zone and the enveloping of gypsum rock are clearer than those revealed by the old seismic section. Even so, actual drilling data demonstrate that the subsurface structures of the foothill belt are far more complex than those revealed by the current seismic imaging results. Therefore, postdrilling evaluation for the validity of seismic techniques implemented in the Nanjiang and Zhenba piedmont zone has been carried out. The results indicate that the current acquisition scheme and processing workflow cannot completely fulfill the requirements of high-precision velocity modeling and migration imaging of complex structures (such as footwalls of thrust fault and small-scale fault blocks) in the piedmont zone, especially when the rugged surface and the widespread limestone outcrop appear simultaneously. Finally, we have developed some potential needs of seismic theories and techniques in the foothill belt, including seismic wave propagation, acquisition, and processing technology.


2019 ◽  
pp. 65-77
Author(s):  
Iryna Hotsynets

In the article on the material of L. Daien’s documentary story “Chornobyl is a bitter grass” the actualization and dynamics of language signs of the Chornobyl era in the context of the development of a specific “Chornobyl” dictionary is traced. This is in line with the needs of the verbalization of the topic of the technogenic accident at the Chornobyl nuclear power station, relevant to Ukrainian society. The mechanisms of the expressive development of Chornobyl’s own name are highlighted. The types of substantive-evaluative transformation of traditional images that fall into the semantic action of the Chornobyl nomination are noted. The objects of analysis were temporally and thematically marked vocabulary and phraseology, as well as stylistic methods of creating the image of the Chornobyl disaster. In particular, it emphasizes the peculiarities of contextual development of terminological units – zone, atom, radiation, radiation, etc. The types of their semantic-evaluative transformation as they enter the documentary text are clarified. The journalistic rhetoric of the linguistic description of the Chornobyl events, especially the linguistic portrayal of the liquidators of the consequences of the Chоrnobyl accident, was emphasized. Thus, the language of L. Daien’s documentary story “Chornobyl is a bitter grass” illustrates the social and psychological situation at the Chornobyl nuclear power station on the night of a man-made disaster. The verbalization of this topic is subordinated to the specific Chоrnobyl vocabulary, which reflects the entry into the common practice of narrowly specialized terms (atom, atomic, radiation, radioactive), and also attests to the expansion of the semantic volume of units, “involved”. Understood in the context of contemporary reading of documentary prose, they are perceived as linguistic signs of the Chоrnobyl era.


Author(s):  
V.N. Melikhov ◽  
N.A. Krylov ◽  
I.V. Shevchenko ◽  
V.L. Shuster

Regarding the South Caspian oil and gas province, it is concluded that the Pliocene productivity prevails in the western part of the province, and that the gas and oil prospects of the eastern land side in the Mesozoic are prioritized. A retrospective analytical review of geological and geophysical data and publications on the Mesozoic of Southwestern Turkmenistan was carried out, which showed the low efficiency of the performed seismic and drilling operations in the exploration and evaluation of very complex Mesozoic objects. A massive resumption of state-of-the-art seismic exploration and appraisal drilling in priority areas and facilities performed by leading Russian companies is proposed. For some areas, a new, increased estimate of the projected gas resources is given. An example of modern high-efficiency additional exploration of the East Cheleken, a small Pliocene gas and oil field, which turned this field into a large one in terms of reserves, is given.


2021 ◽  
Vol 43 (3) ◽  
pp. 123-134
Author(s):  
T. R. Akhmedov ◽  
T. Kh. Niyazov

The article is devoted to the elucidation of the nature of the wave field recorded below the supporting-dominant seismic horizon «P» in the Middle Kura depression of Azerbaijan. A brief overview of the work carried out here is given; it is indicated that some geologists and geophysicists of our country, in our opinion, mistakenly assume that the observed wave field below the specified horizon is formed mainly by multiple reflections. Since the introduction of the common depth point method into the practice of seismic exploration, individual areas of the Middle Kura depression in Azerbaijan, including the Yevlakh-Agjabedi trough, have been repeatedly studied with varying degrees of frequency tracking. On the basis of this, a fairly large number of promising structures have been identified and mapped. But the structure of the Mesozoic, in particular the deposits of the Upper Cretaceous, still remains insufficiently studied. The study of the geological structure of the Mesozoic sediments, which are considered promising in terms of oil and gas content, is an urgent geological task; exploration work was carried out in the studied areas of the Middle Kura depression using a complex of geophysical methods at the modern technical and methodological level and new results were obtained. The constructed seismic sections show a dynamically pronounced and well-traceable seismic horizon corresponding to the Mesozoic surface and located deeper than it, relatively weak, short, discontinuous reflective boundaries that characterize the structure within the Mesozoic deposits. The studies carried out on the basis of modeling and velocity analysis made it possible to prove that the wave field in the time interval corresponding to the Mesozoic deposits owes its origin to intermittent single reflections from volcanic-carbonate deposits of the Upper Cretaceous age.


2018 ◽  
Vol 1 ◽  
pp. 80
Author(s):  
Yaroslav Platmir

At the turn of the 19th and 20th centuries Ukraine did not have a national state, was divided into two large regions, which were part of the Russian and Austro-Hungarian empires. Therefore, Ukrainian intellectuals had to live and work in difficult political conditions, often going to very substantial compromises with imperial forces, represented by both Russian officials and comparatively more numerous Russian intellectual circles. This had a significant impact on the nature and tasks of the Ukrainian movement, substantially corrected both tactical steps and a general strategic course towards its own autonomy and statehood. It is important to note that the evolution of Ukrainian national ideology took place under the influence of European ideas. They, however, captured the thoughts of very narrow circles of humanitarians, most of whom engaged in the study of ethnographic and folklore spheres of peasant life, and therefore, were concerned about a relatively limited range of issues. At the same time, the comprehension of the past and present problems took place against the background of the involvement of a new generation of public figures in the movement. In the territory of Naddniprianshchyna, it was formed in conditions of rapid modernization, while maintaining the imperial (autocratic) system of power. After analyzing all the key aspects of the proposed problem, the author came to the conclusion that in relation to social processes (realities) at the beginning of the 20th century in the Naddniprianshchyna, the Ukrainian intelligentsia focused on socio-cultural, national, regional, and, to a lesser extent, economic and social life. The choice between "culture and politics" was too limited. In a situation, where many forces needed to solve internal (party, interpersonal, etc.) problems, such a local orientation significantly weakened the influence of intellectual circles on society, particularly the peasantry. At that time, when the Ukrainian intelligentsia claimed to be the main driving force of national affirmation, the establishment of ties between the Western (sub-Austrian) and the Eastern (sub-Russian) communities, it did little to its influence among the general population, the common people, that was a gross mistake in the new historical conditions.


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