scholarly journals Research and Application of Globally Optimized Sequence Stratigraphic Seismic Interpretation Technology: Taking the Lower Cretaceous Shahezi Formation of Xujiaweizi Fault Depression as an Example

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Xiaowei Guan ◽  
Qian Meng ◽  
Chuanjin Jiang ◽  
Xinyu Liu ◽  
Menglu Han
Keyword(s):  
Seismic Data ◽  
Lower Cretaceous ◽  
Research Work ◽  
Seismic Interpretation ◽  
Reservoir Prediction ◽  
Sequence Stratigraphic ◽  
Geological Age ◽  
Stratigraphic Model ◽  
Longitudinal Resolution ◽  
Frequency Sequence

In the study of sequence stratigraphy in continental rift basins, the use of seismic data to track different levels of sequence stratigraphic boundaries laterally is the key to the division of sequence stratigraphic units at all levels and the establishment of an isochronous sequence stratigraphic framework. Traditional seismic interpretation and the establishment of a 3D sequence stratigraphic structure model are a difficult research work. This paper introduces the concept of cost function minimization and performs global stratigraphic scanning on 3D seismic data to interpret horizons and faults in a large grid. Constrained by the results, human-computer interactive intelligent interpretation, by adding iterative interpretation of geological knowledge, established a global stratigraphic model with a relative geological age. The application in the Lower Cretaceous Shahezi Formation of Xujiaweizi fault depression shows that this technology has improved the accuracy and efficiency of sequence stratigraphic interpretation, and the application of this technology has achieved the interpretation of each event horizon under the current seismic data resolution conditions. In this way, a continuous sequence stratigraphic model is established. From this stratigraphic model, any high-frequency sequence-interpreted seismic horizon can be extracted, which provides a basis for the combination of lateral resolution and longitudinal resolution of subsequent reservoir prediction.

New exploration opportunities in the offshore northern Perth Basin

2011 ◽  
Vol 51 (1) ◽  
pp. 45 ◽  
Author(s):  
Andrew Jones
Keyword(s):  
Seismic Data ◽  
Petroleum System ◽  
Residual Oil ◽  
Contributing Factors ◽  
Sequence Stratigraphic ◽  
Stratigraphic Framework ◽  
Stratigraphic Model ◽  
Half Graben ◽  
Age Constraints ◽  
Insight Into

The petroleum prospectivity of the northern Perth Basin has been assessed by Geoscience Australia (GA) as part of the Australian Government’s Offshore Energy Security Program, in support of the 2011 offshore acreage release. This assessment includes the first published synthesis of data from fourteen new field wildcat wells drilled in this part of the basin since the Cliff Head 1 discovery (2001), and the interpretation of new regional 2D seismic data acquired during GA survey 310. Most petroleum accumulations in the northern Perth Basin are associated with Permian and Triassic source and reservoir intervals, and are found onshore and nearshore (ie. Cliff Head, Frankland, Dunsborough and Perseverance discoveries). In addition to the technical and commercial successes, numerous wells in the offshore part of the basin have intersected residual oil columns indicative of trap breach. New and legacy palynological data from Permian to Cretaceous strata in offshore wells have been used to provide age constraints for a sequence stratigraphic framework for this part of the basin. New seismic data show Permo-Triassic strata that are stratigraphic equivalents of the productive onshore and nearshore Perth Basin petroleum system, also occur within Permian half-graben in the outer Abrolhos and Houtman sub-basins. Source rock, oil stain and fluid inclusion sampling from this interval suggest that the proven onshore petroleum system is also effective in the offshore. A refined tectono-stratigraphic model for the offshore basin provides insights into basin evolution, prospectivity and contributing factors driving trap breach. Geochemical sampling in the context of the new detailed sequence framework, including from recently dredged rock samples from incised canyons, has also provided insight into the potential effectiveness of a Jurassic/Cretaceous petroleum system in the Houtman and Zeewyck sub-basins.

Research of Sequence Stratigraphic Models of Jiufotang Formation, Lower Cretaceous, the Luxi Sag, the Kailu Basin

2011 ◽  
Vol 356-360 ◽  
pp. 2941-2949
Author(s):  
Yang Li ◽  
Qing Bin Xie ◽  
Xiao Min Zhu ◽  
Fen Liu
Keyword(s):  
Seismic Data ◽  
Lower Cretaceous ◽  
Sedimentary Facies ◽  
River Delta ◽  
Braided River ◽  
Sequence Stratigraphic ◽  
Meandering River ◽  
River Deltas ◽  
Lacustrine Facies ◽  
Order Sequence

With comprehensive utilization of drilling, logging and seismic data, research was conducted on the sequence stratigraphic models of Jiufotang Formation, Lower Cretaceous in the Luxi Sag, Kailu Basin. It was revealed that Jiufotang Formation could be divided into one three-order sequence, which including lowstand systems tract (LST), transgressive systems tract (TST), highstand systems tract (HST) and regressive systems tract (RST). Within the sequence, it developed five types of sedimentary facies, which were nearshore subaqueous fan, braided river delta, meandering river fan, turbidite fan and lacustrine facies, respectively. The LST mainly developed nearshore subaqueous fan, the TST mainly developed meandering river deltas while the HST and RST mainly developed meandering river delta, braided river delta and nearshore subaqueous fan. In addition, turbidite fan developed in all four systems tracts. Two types of sequence stratigraphic models developed: short-axis model and long-axis model.

scholarly journals The Billund delta: a possible new giant aquifer in central and western Jutland

2004 ◽  
Vol 4 ◽  
pp. 21-24 ◽  
Author(s):  
Erik S. Rasmussen ◽  
Karen Dybkjær ◽  
Stefan Piasecki
Keyword(s):  
Drinking Water ◽  
High Resolution ◽  
Water Supply ◽  
Seismic Data ◽  
Saline Water ◽  
Shallow Groundwater ◽  
Coarse Grained ◽  
Sequence Stratigraphic ◽  
Drinking Water Resources ◽  
Stratigraphic Model

The search for new, deep-seated drinking water resources in Denmark has increased significantly during the past five years as a result of the discovery of excessive amounts of nitrate, pesticides and other pollutants in shallow groundwater boreholes (e.g. Nygaard et al. 2004, this volume). To find and map these aquifers, a multidisciplinary sequence stratigraphic approach has successfully been applied to the Miocene deposits of southern Jutland, where especially the Odderup and Ribe Formations are known as a main aquifer for drinking water from several test wells (Rasmussen et al. 2002). Recently, a more systematic study of the Miocene succession in central and western Jutland has been initiated by the Geological Survey of Denmark and Greenland (GEUS) under contract with local authorities. It includes detailed sedimentological descriptions of outcrops, sedimentological andlog-interpretations of new stratigraphic boreholes and interpretation of new high-resolution seismic data (Fig. 1). A number of outcrops and wells have been studied palynologically, resulting in a detailed dinoflagellate cyst stratigraphy and in palynofacies interpretations. The results of these studies have been integrated in the regional geological and stratigraphic model (Fig. 2). Two new aquifers have been discovered: the Bastrup sand and the Billund sand. The Bastrup sand has already been exploited as a main aquifer in central and southern Jutland, and has been referred to either the Ribe or Odderup Formations. However, new stratigraphic results reveal that the Bastrup sand is a separate unit in the Miocene succession. The Billund sand is a deep-seated aquifer located more than 100 m and often more than 150 m deep, and is therefore not penetrated by standard water supply wells which rarely reach c. 100 m. The Billund sand was first revealed by multichannel seismic data deriving from former oil-exploration carried out in the Billund area (Fig. 3A). The resolution of these seismic data is very poor, but one interpretation of the dipping reflectors (clinoforms) seen in Fig. 3A was of a delta complex. This agrees with outcrop studies along the fjords of eastern Jutland which suggest that a spit complex was deposited in this area during the Early Miocene. The Billund sand was tested by the Vandel Mark well in 2001, which penetrated c. 40 m of sand at a depth of 200 m. The presence of a regional major sand body was later confirmed by new high-resolution seismic data and by the Billund and Løvlund wells in 2002. The Billund well penetrated 50 m of medium- to coarse-grained sand, and chemical tests of the water quality were good. However, a water supply well at Fjand in western Jutland has had problems with so-called ‘brown water’ – water enriched in organic matter (humus). Saline water may also be expected close to older deep-seated faults. This paper summarises the results of a mapping programme of the Billund sand initiated in the summer of 2003.

scholarly journals Model of the structure of upper Miocene productive deposits odoptu area of the Okhotsk sea

2017 ◽  
pp. 48-53
Author(s):  
A. L. Volkonskaya ◽  
I. N. Kerusov ◽  
A. I. Konyukhov ◽  
E. E. Karnyushina ◽  
O. V. Krylov ◽  
...  
Keyword(s):  
Seismic Data ◽  
Sedimentary Cover ◽  
Research Area ◽  
Okhotsk Sea ◽  
Sea Level Changes ◽  
Sequence Stratigraphic ◽  
Stratigraphic Model ◽  
Integrated Interpretation ◽  
Model Graph ◽  
Geochronological Scale

Using the example of lower nutovsky thickness on Odoptu field discusses the possibility and efficacy of sequence-stratigraphic approach to integrated interpretation of seismic data and drilling materials. Sequence stratigraphic model, graph showing sea level changes and regional chronostratigraphic correlation chart with reference to the existing geochronological scale was developed for the formation of the sedimentary cover in the research area.

scholarly journals Sequence-stratigraphic model of the West Siberia Lower Cretaceous

Georesursy ◽  
2021 ◽  
Vol 23 (2) ◽  
pp. 179-191
Author(s):  
Valentina A. Zhemchugova ◽  
Vadim V. Rybalchenko ◽  
Tatiana A. Shardanova
Keyword(s):  
Lower Cretaceous ◽  
Structure Prediction ◽  
Complex Analysis ◽  
Full Range ◽  
Model Development ◽  
Depositional Environments ◽  
Sea Level Changes ◽  
Conceptual Base ◽  
Sequence Stratigraphic ◽  
Stratigraphic Model

Apparently, conceptual base of the sequence stratigraphy is one of the most acknowledged methodologies in the geological world at the present time for the sedimentary strata structure prediction. It is based on the complex analysis of the seismic, stratigraphic and sedimentary data on the depositional bodies where the structure and facies filling is regulated by the relative sea level changes. The Lower Cretaceous section of the Western Siberia in this regard is the unique object, as it is represented by the full range of the clastic depositional environments – from relatively deep-water to the continental, which are very sensitive to the conditions changes. Sequence-stratigraphic analysis results can be used to complete the pragmatic tasks in the petroleum geology as the analysis is based on the reconstruction of the sedimentogenesis processes in the past, and the understanding of that processes is the key to the generalized depositional model development. This model can be used to create the models, which can be applied to the unique local objects that occur in the Lower Cretaceous section.

Upper Quaternary strata of the upper continental slope, Northeast Gulf of Mexico; sequence stratigraphic model for a terrigenous shelf edge

1998 ◽  
Vol 68 (4) ◽  
pp. 579-595 ◽  
Author(s):  
R. D. Winn ◽  
H. H. Roberts ◽  
B. Kohl ◽  
R. H. Fillon ◽  
J. A. Crux ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Continental Slope ◽  
Shelf Edge ◽  
Sequence Stratigraphic ◽  
Stratigraphic Model

Application of “2W1H” Seismic Data in Deep Reservoir Prediction

2020 ◽  
Author(s):  
H. Li ◽  
Q. Zhang ◽  
J. Gui ◽  
H. Wang ◽  
L. Zhang ◽  
...  
Keyword(s):  
Seismic Data ◽  
Reservoir Prediction ◽  
Deep Reservoir
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