Experience in Low-Frequency Spectral Analysis of Passive Seismic Data in Volga-Ural Oil-Bearing Province

Birialtsev, E.; Eronina, E. V.; Rizhov, Dmitriy; Rizhov, Vasiliy; Shabalin, N.A.; Вильданов, A. A.

doi:10.2523/iptc-13678-ms

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…At narrow frequency range of 1.5-4 Hz and amplitude 0.01-10 m/s, a tremor-like signal has been observed in defined location. Similar observations were also found in Volga-Ural oil bearing province in Tarasan [6] and in Mexico for tight gas field (see Figure 23) [22,144].…”

Section: Passive Seismic Surveyssupporting

confidence: 86%

“…For comparative analysis, previously mentioned works have been summarized in Table 7 [6,7,34,43,46,[62][63][64]]. The first column shows the sensing type of accelerometers.…”

Section: Analysis and Design Challengesmentioning

confidence: 99%

“…Therefore, it could not be directly inferred from passive seismic data [1,29]. The literature study signifies that the 20 observed tremor signals have been correlated with hydrocarbon reservoir for the supplying seismic-acoustic energy for filtering/mixing hydrocarbon impacts on reservoir subsurface [2,5,6,8,21,22,44,127]. However, others have expressed some doubts on underlying theory of the technique and its applicability to different geologies and its repeatability [24,29,41].…”

Section: Seismic Attributes Predicted Hydrocarbon Versus Drilledmentioning

confidence: 99%

“…However, observed seismic energy for determining hydrocarbon reservoir may have wider range. On the contrary, geoscientists may consider a range of 1-6 Hz as a typical noise trough in the background spectrum which is the only frequency window for hydrocarbon-indicating signal [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Accelerometer Sensor Specifications to Predict Hydrocarbon Using Passive Seismic Technique

2016

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The ambient seismic ground noise has been investigated in several surveys worldwide in the last 10 years to verify the correlation between observed seismic energy anomalies at the surface and the presence of hydrocarbon reserves beneath. This is due to the premise that anomalies provide information about the geology and potential presence of hydrocarbon. However a technology gap manifested in nonoptimal detection of seismic signals of interest is observed. This is due to the fact that available sensors are not designed on the basis of passive seismic signal attributes and mainly in terms of amplitude and bandwidth. This is because of that fact that passive seismic acquisition requires greater instrumentation sensitivity, noise immunity, and bandwidth, with active seismic acquisition, where vibratory or impulsive sources were utilized to receive reflections through geophones. Therefore, in the case of passive seismic acquisition, it is necessary to select the best monitoring equipment for its success or failure. Hence, concerning sensors performance, this paper highlights the technological gap and motivates developing dedicated sensors for optimal solution at lower frequencies. Thus, the improved passive seismic recording helps in oil and gas industry to perform better fracture mapping and identify more appropriate stratigraphy at low frequencies.

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Section: Passive Seismic Surveyssupporting

confidence: 86%

“…For comparative analysis, previously mentioned works have been summarized in Table 7 [6,7,34,43,46,[62][63][64]]. The first column shows the sensing type of accelerometers.…”

Section: Analysis and Design Challengesmentioning

confidence: 99%

Section: Seismic Attributes Predicted Hydrocarbon Versus Drilledmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Accelerometer Sensor Specifications to Predict Hydrocarbon Using Passive Seismic Technique

2016

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“…Технология НСЗ хорошо зарекомендовала себя на суше во многих нефтегазоносных провинциях РФ и успешно применяется при поиске и разведке залежей УВ в практике ГРР различных нефтегазодобывающих компаний [1][2][3][4], в том числе при проведении работ на лицензионных участках ПАО «НК «Роснефть» [5].…”

Section: опыт проведения тестовых работ по технологии низкочастотногоunclassified

The Experience of Conduction of Low-Frequency Seismic Sounding Technology (LFS) Test Works on the Shelf of the Sea of Okhotsk (Sakhalin Island)

Ryzhov¹,

Zhukova²,

Chernyshkov³

et al. 2017

Proceedings

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SUMMARYLow-frequency seismic sounding (LFS) has proven itself on land in many oil and gas provinces of the Russian Federation and is successfully used in prospecting and exploration of hydrocarbon fields. In principle, the use of the LFS on the shelf and in the sea-land transit zone is possible when field records of low-frequency microseismic background obtained from the bottom surface have good quality. However, in order to fully confirm the working capacity of the technology for shelf conditions, there was required to conduct real test studies involving specialized bottom and seismological equipment. Test works of the LFS, in agreement with the branch of RN-Shelf-Arktika LLC, were carried out by a "wide" profile on land and shelf of one of the licensed areas on Sea of Okhotsk. The purpose of the surveys was to test the LFS technology in marine conditions, as well as to identify interpretation features of oil and gas potential zones, in analogy with the standard LFS surveys from daylight surface, and assess the oil and gas potential of the territory on the profile of observations. The result of the test work was a map of hydrocarbon potential for production layer of the Daginsky Formation within the "broad" profile of the LFS, which confirms the possibility of effective application of the LFS technology on the shelf of the seas.

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Passive seismic data processing methods to identify contrast intrasalt interlayers in the geological section of the Astrakhan Arch

Biryaltsev

Vikhoreva²,

Zakharchuk

et al. 2021

Georesursy

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The article examines the problem of processing microseismic noise (MN) to identify and evaluate occurrence depth of contrasting geological objects – intersalt interlayers with a potentially high formation pressure. If it is impossible to use artificial wave sources, statistic processing of passive seismic data becomes critical. Due to the accumulation of power spectral density (PSD) during a long-term recording of MN the deterministic medium effect on a random signal spectrum is identified. PSD modulation when the surface or the bottom of the layered medium is exposed to white noise is expressed in terms of the Green’s function (GF) of a wave equation. Relevant GF variations corresponding to the layers form the basis for accumulated PSD approximation, and indicate the depth and contrast of the target features.

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Experience in Low-Frequency Spectral Analysis of Passive Seismic Data in Volga-Ural Oil-Bearing Province

Cited by 5 publications

References 5 publications

Accelerometer Sensor Specifications to Predict Hydrocarbon Using Passive Seismic Technique

Accelerometer Sensor Specifications to Predict Hydrocarbon Using Passive Seismic Technique

The Experience of Conduction of Low-Frequency Seismic Sounding Technology (LFS) Test Works on the Shelf of the Sea of Okhotsk (Sakhalin Island)

Passive seismic data processing methods to identify contrast intrasalt interlayers in the geological section of the Astrakhan Arch

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