The Structure of Cambrian Deposits of the Vilyui Hemisyneclise, Based on an Integrated Analysis of Drilling and Seismic Data

2021 ◽  
Vol 62 (08) ◽  
pp. 914-928
Author(s):  
I.A. Gubin ◽  
A.E. Kontorovich ◽  
I.V. Korovnikov ◽  
T.M. Parfenova
Keyword(s):  
Seismic Data ◽  
Lateral Distribution ◽  
Integrated Analysis ◽  
Cross Bedding ◽  
Drilling Data ◽  
Two Stages

Abstract —We present a model of the stratigraphic and lateral distribution of Cambrian deposits in the Vilyui hemisyneclise, based on an analysis of drilling data and interpretation of seismic data. The study shows a series of formations and sequences penetrated by wells (Syugdzher saddle, Khorgochum monocline, Ygyatta depression, Tyukyan–Chybyda monocline, Arbai–Sinyaya megaswell, etc.). In the areas where the Cambrian was not penetrated by wells, the distribution of Cambrian deposit was inferred based on the available seismic data. The distribution of the Kuonamka Horizon formed by Cambrian organic-rich rocks is characterized in detail. These are the Kumakh and Sinyaya–Kutorgina sequences and the Inikan and Kuonamka formations. It has been found that the Kuonamka Horizon was deposited during two stages, Botomian and Toyonian–early Mayan. The horizon is overlain by younger deposits of the Mayan Stage, with characteristic cross-bedding structures. Schemes of facies zoning of the Cambrian for Botomian, Toyonian–early Mayan, and middle Mayan times were constructed based on the most recent geological and geophysical understanding of the Vilyui hemisyneclise.

Integrated Analysis of Borehole and Surface Seismic Data to Resolve Seismic Uncertainties in the Gulf Of Suez

2014 ◽  
Author(s):  
Mohamed S El-Hateel ◽  
Parvez Ahmad ◽  
Ahmed Hesham A Ismail ◽  
Islam A M Henaish ◽  
Ahmed Ashraf
Keyword(s):  
Seismic Data ◽  
Integrated Analysis ◽  
Gulf Of Suez

Combined Application of Deep Boundary Detection Tool, Multilayer Data Inversion and 3D Visualization of Seismic Data in Real Time for Geosteering on the Oilfield in the Russian Federation

2021 ◽  
Author(s):  
Chingis Oshakbayev ◽  
Roman Romanov ◽  
Valentin Vlassenko ◽  
Simon Austin ◽  
Sergey Kovalev ◽  
...  
Keyword(s):  
Real Time ◽  
Oil Recovery ◽  
Seismic Data ◽  
3D Visualization ◽  
Structural Data ◽  
Boundary Detection ◽  
Integrated Analysis ◽  
Horizontal Section ◽  
Recovery Method ◽  
Detection Tool

Abstract Currently drilling of horizontal wells is a common enhanced oil recovery method. Geosteering services are often used for accurate well placement, which makes it possible to achieve a significant increase in production at relatively low cost. This paper describes the result of using seismic data in three-dimensional visualization for high-quality geosteering using a deep boundary detection tool and multilayer inversion in real time. Crossing the top of the reservoir while drilling horizontal sections at the current oilfield is unacceptable, due to the presence of reactive mudstones. In case of crossing the top of reservoir, further work on running and installing the liner becomes impossible due to instability and may lead to well collapse. Based on prewell analysis of the structural data, the well was not supposed to approach the top of the target formation along the planned profile. However, while preparing geosteering model and analyzing seismic data it became possible to reveal that risk, elaborate its mitigation and eventually increase the length of the horizontal section. Such integrated analysis made it possible to maintain the wellbore within the target reservoirs, as well as to update the structural bedding of the top based on the multilayer inversion results.

Integrated Analysis of Borehole and Surface Seismic Data to Resolve Seismic Uncertainties in the Gulf of Suez

2014 ◽  
Author(s):  
M.S. El-Hateel ◽  
P. Ahmad ◽  
A.H.A. Ismail ◽  
I.A.M. Henaish ◽  
A. Ashraf
Keyword(s):  
Seismic Data ◽  
Integrated Analysis ◽  
Gulf Of Suez

SEARCH FOR HYDROCARBON ACCUMULATIONS IN POROUS FRACTURED RESERVOIRS USING THE PRONY TECHNOLOGY

2021 ◽  
pp. 74-87
Author(s):  
S. N. Smolin ◽  
◽  
G. M. Mitrofanov ◽  
◽  
◽  
...  
Keyword(s):  
Seismic Data ◽  
Fractured Reservoirs ◽  
Upper Jurassic ◽  
Deep Drilling ◽  
The West ◽  
Frequency Dependent ◽  
Sedimentary Deposits ◽  
Reflection Time ◽  
Drilling Data ◽  
Filtration Technology

The search for nonstructural hydrocarbon accumulations is a Herculean task that requires the use of delicate tools. Such tools include the Prony filtration technology. It allows for direct qualitative forecasting of hydrocarbon bearing features based on frequency-dependent analysis of the observed wave field of CDP reflection-time sections and includes four steps. The article shows capabilities of technology and specific examples of its application by correlation of frequency-dependent Prony images of wave fields with deep drilling data. The performed studies were carried out using CDP 2D seismic data and deep drilling data of 32 wells obtained in the territory of the West Siberian Plate, mainly for the Middle Jurassic (Late Bajocian-Bathonian, Malyshev horizon) interval of terrigenous-sedimentary deposits. At times, the underlaying and overlying Middle and Upper Jurassic deposits were captured. The manifestation forms of various oil and stratum water accumulations and their possible prospecting indicators, as well as signs of the absence of reservoirs are given. As an example, the manifestation and possible prospecting indicators of gas accumulation from a neighboring region within the West Siberian Plate are shown.

Integrated Analysis of Well Logs and Seismic Data for Reservoir Characterization to Estimate Hydrocarbon

2014 ◽  
Author(s):  
A. Kumar ◽  
W. Ismail Wan Yusoff ◽  
V. Sagayan a/l Asirvadam ◽  
S. Chandra Dass
Keyword(s):  
Seismic Data ◽  
Reservoir Characterization ◽  
Well Logs ◽  
Integrated Analysis

scholarly journals Integrated Geophysical Analyses of Shallow-Water Seismic Imaging With Scholte Wave Inversion: The Northern Adriatic Sea Case Study

2020 ◽  
Vol 8 ◽  
Author(s):  
M. Giustiniani ◽  
U. Tinivella ◽  
S. Parolai ◽  
F. Donda ◽  
G. Brancolini ◽  
...  
Keyword(s):  
Shallow Water ◽  
Seismic Data ◽  
Seismic Imaging ◽  
P Wave ◽  
Critical Conditions ◽  
Integrated Analysis ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Time Migration ◽  
Scholte Waves

The integrated analysis using different seismic wave types in a record is a very efficient approach for a comprehensive characterization of marine sediments, especially in shallow water conditions. The proposed integrated method to analyze seismic data in post-critical conditions consists of: 1) the inversion of Scholte waves to obtain a reliable Vs distribution of the near seafloor; 2) pre-processing of seismic data; 3) construction of the P-wave velocity field by using all available information, including available well data; and 4) the application of the wave equation datuming and post-processing, such as pre-stack time migration. We demonstrate how this approach could be successfully applied on seismic datasets characterized by post-critical conditions and the occurrence of the Scholte waves, which may be exploited to provide fundamental information instead of being only an unwanted effect. The integrated analysis of seismic events can thus help, together with data processing, by providing better seismic imaging, which is a priority for a reliable seismostratigraphic interpretation.

Sedimentary Facies and Evolution of early Cretaceous in the Fault Depressions, Songnan Area

2012 ◽  
Vol 152-154 ◽  
pp. 1036-1040
Author(s):  
Ya Sheng Wu ◽  
Da Kang Zhong ◽  
Nan Sheng Qiu ◽  
Xiao Ying Zhang
Keyword(s):  
Structural Geology ◽  
Seismic Data ◽  
Oil And Gas ◽  
Sedimentary Facies ◽  
The Other ◽  
Well Logs ◽  
Sedimentary Environments ◽  
Sedimentary Evolution ◽  
Fan Delta ◽  
Two Stages

Based on the structural geology, sedimentology, palaeontology and geochemistry, the sedimentary facies and evolution patterns are developed in Songnan area from the studies of seismic data, cores, well logs, palaeontology and geochemistry. The result indicates that nearshore subaqueous fan, fan delta, braid delta and lacustrine had been developed in the fault depressions of Songnan area. From the margin to the depocenter of the basin, the sedimentary environments gradually changed from nearshore subaqueous fan, fan delta or braid delta to shore-shallow sediments and middle depth-deep lacustrine. Two stages are divided for the sedimentary evolution of Songnan area, namely the prior stage which appears with Yixian formation developing lava facies and pyroclastic facies; the other is the detrital rock facies ,which are developed from formation Jiufotang to Fuxin, is composed of nearshore subaqueous fan, fan delta, braid delta and lacustrine. Conclusion can be made that those sedimentary facies are controlled by the depth of water variation, which changed from shallow to deep, and then to shallow. Multiple source-reservoir-cap assemblage in vertical provided favourable condition for oil and gas pool forming.

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