Characteristics of Sedimentation Evolution Based on the Sequence Stratigraphic Frameworks in Shahezi Formation of Southern Xujiweizi Fault Depression

2014 ◽  
Vol 1010-1012 ◽  
pp. 1359-1364
Author(s):  
Ang Li ◽  
Lai Xing Cai ◽  
Shuang Liu ◽  
Qi Li
Keyword(s):  
Sequence Stratigraphy ◽  
Developmental Stages ◽  
Second Grade ◽  
Lake Basin ◽  
Sequence Stratigraphic ◽  
Sedimentary Evolution ◽  
Stratigraphic Framework ◽  
Stratigraphic Division ◽  
Facies Types ◽  
System Tracts

Many scholars in China introduced the theory of sequence stratigraphy,applying to Chinese continental fault depression lake, they have made a lot of achievements in scientific research. However, there are still a lot of controversy according to the establishment in Shahezi group of sequence stratigraphic framework in Xujiaweizi fault depression.Sequence boundary identification method in this paper is based on the “instruction of Vail’s sequence stratigraphy theory, identification of seismic unconformity, verification by using logging methords”. And, following the principle of isochronous ,sequence stratigraphic framework of this region is established clearly. The southern Xujiaweizi fault depression in Shahezi group is divided into 1 second grade sequence, in the interior distributed SQ1-SQ4 4 third grade sequences from the bottom. Developmental stages at the bottom of SQ1 and the top of SQ4, basin is small and water is shallow. However, Developmental stages in SQ2 and SQ3,water enters the lake basin continuously, formed a sedimentary background of “wide basin and deep water”. In addition, each of the three grade sequence has split structure, the lake transgressive domain and lake regression domain two system tracts. Besides, the reversed order para-sequence sets caused by the lake regression and progradation set on the positive para-sequence sets caused by the lake transgression and retrogradation. On the basis of sequence stratigraphic division and correlation, conbined with the regional construction and the supply of provenance ,the sedimentary sequence framework of evolution characteristics are studied.That fan delta,braided river delta, lacustrine are the main facies types in study area. Characteristics of sedimentary evolution there are like this: the characteristics of sedimentation evolution show framework controls sand, succession of evolution, separated-source sedimentary, contiguously distribution.

Sequence Stratigraphic Characteristics of Damoguaihe Formation in the North of Wuerxun Sag

2015 ◽  
Vol 733 ◽  
pp. 84-87
Author(s):  
Bao Yu ◽  
Ling Yu Xu
Keyword(s):  
Sequence Stratigraphy ◽  
Third Order ◽  
Sequence Stratigraphic ◽  
The North ◽  
Stratigraphic Framework ◽  
Sequence Boundaries ◽  
System Tracts ◽  
High Resolution Sequence Stratigraphy ◽  
Order Sequence ◽  
Drilling Core

Using the theories and methods of high-resolution sequence stratigraphy in rift lacustrine basins, we analyzed seismic, logging and drilling core data of the Damoguaihe Formation in the northern Wuerxun Sag area of the Hailaer Basin in order to understand its sequence stratigraphy characters. We identified third-order sequence boundaries and maximum flooding surfaces and established the sequence stratigraphic framework of the Damoguaihe Formation, which is a set of type sequence. It includes lowstand system tracts (LST), transgressive system tracts (TST) and highstand system tracts (HST).

High Resolution Sequence Stratigraphy of Silurian Strata in Tazhong Area

2013 ◽  
Vol 734-737 ◽  
pp. 111-116
Author(s):  
Lei Zhang ◽  
Lun Wei Zhu ◽  
Xue Juan Zhang
Keyword(s):  
High Resolution ◽  
Sequence Stratigraphy ◽  
Third Order ◽  
Sequence Stratigraphic ◽  
Stratigraphic Framework ◽  
Tazhong Area ◽  
Sequence Boundaries ◽  
High Resolution Sequence Stratigraphy ◽  
Comprehensive Study

According to the fundamental principles of high resolution sequence stratigraphy, this paper focused on the application of high resolution sequence stratigraphy to Silurian strata in Tazhong area. Based on the comprehensive study of logging, drilling and seismic information, the high resolution sequence boundaries of Silurian strata and two scales of datum level cycles (long-term and intermediate-term) can be recognized in Tazhong area. Seven chronstratigraphic boundaries can be recognized in Silurian strata, including four sequence boundaries, which were the transformation from datum level falling to datum level rising, and three flooding surfaces, which the transformation from datum level rising to datum level falling. The Silurian strata in Tazhong area can be divided into three third-order sequences which correspond to three long-term datum level cycles, and 11 fourth-order sequences (parasequence sets) relating to 11 intermediate-term datum level cycles. The classification aforementioned can much better solved the corresponding problem between the six lithological sections of Silurian strata and sequence formations, finally establishes the high resolution sequence stratigraphic framework of Silurian strata in Tazhong area.

Study on Sedimentary Characteristics and Models of River Group Sequence

2014 ◽  
Vol 608-609 ◽  
pp. 1141-1146
Author(s):  
Zheng Shi ◽  
Long Wei Qiu ◽  
Yong Qiang Yang
Keyword(s):  
Clear Understanding ◽  
Delta Front ◽  
Sequence Stratigraphic ◽  
Sedimentary Characteristics ◽  
Stratigraphic Framework ◽  
Depositional System ◽  
Sand Body ◽  
System Tracts ◽  
Mud Logging ◽  
Core Description

Zhunzhong area Qingshui River group has top and bottom boundaries,which are not clear,and research on the evolution of the lack in sequence stratigraphic framework of deposition and on the reservoir sand body types do not have a clear understanding problem.In seismic interpretation, core description and based on the analysis of the related test,combining with the mud logging and well logging data,for the redefinition of Qingshui River group on the top and bottom boundaries,it identifies 6 time significance of sequence boundary,taking Qingshui River group can be divided into 2 sequences, 5 system tracts;clear and definite the study area mainly developed delta lacustrine depositional system,which can be further divided into the delta front subfacies, beach bar facies and semi deep lake subfacies. It takes an analysis on the sedimentary characteristics and distribution rules of different types, and it controls effect of topography and hydrodynamic conditions on deposition system, and then puts forward the corresponding sedimentary patterns.

High-Resolution Sequence Stratigraphic Division and Monosandbody Isochronic Correlation of Meandering River Delta of Fuyu Oil Layer in the Northern Honggang

2013 ◽  
Vol 734-737 ◽  
pp. 362-365
Author(s):  
Yu Sun ◽  
Xiu Li Zhang ◽  
Jin Yan Zhang ◽  
Chen Chen
Keyword(s):  
High Resolution ◽  
Geographical Location ◽  
Sequence Stratigraphic ◽  
Meandering River ◽  
Base Level ◽  
Sedimentary Evolution ◽  
Sand Body ◽  
Stratigraphic Division ◽  
Cyclic Changes

By using the cores, drilling and logging data, Fuyu oil layer in the northern Honggang is divided into 2 long-term base level cycle, 4 medium-term base level cycles, 20 short-term base level cycles, and monosandbody high-resolution sequence strata framework is established, monosandbody isochronic correlation is achieved in Isochronic strata framework at the same time. Through high--resolution sequence stratigraphic analysis, sedimentary evolution, monosandbody distribution, sand geometry and distribution characteristics of reservoir are controlled by base-level changes in Fuyu oil layer of the northern Honggang. The lower Fuyu oil layer is dereliction prograding sequence stratigraphic modes in fall range of base-level. Space stacked form of the sand body is controlled by A/S ratio or base level changes. The symmetry of cyclic changes with the geographical location and distance from the sedimentary source.

The Research of High-Resolution Sequence Stratigraphy of Putaohua Reservoir in Daan Oilfield

2013 ◽  
Vol 838-841 ◽  
pp. 1843-1846
Author(s):  
Ting Ting Li ◽  
Yue Shi ◽  
You Hai Sun ◽  
Ming Qin
Keyword(s):  
High Resolution ◽  
Sequence Stratigraphy ◽  
Geophysical Data ◽  
Short Term ◽  
Middle Term ◽  
Sequence Stratigraphic ◽  
Stratigraphic Framework ◽  
Basic Characteristics ◽  
High Resolution Sequence Stratigraphy

By using geological and geophysical data and according to the basic characteristics of sequence boundary, Putaohua Reservoir in Daan Oilfield is divided into a rise hemicycle in long-term cycles, a full middle-term cycle, nine short-term cycles and a number of ultra-short-term cycles.The high-resolution sequence stratigraphic framework of Putaohua reservoir under monosandbody rank is established, and a set of techniques and methods to high-resolution sequence stratigraphy correlation in shallow delta is summed up.

Application of Wavelet Transform in High-Resolution Sequence Stratigraphic Division

2013 ◽  
Vol 772 ◽  
pp. 823-827 ◽  
Author(s):  
Da Wei Ji ◽  
Ji Li ◽  
Guang Dong Lu
Keyword(s):  
Wavelet Transform ◽  
High Resolution ◽  
Sequence Stratigraphy ◽  
Periodic Oscillation ◽  
Oil Well ◽  
Sequence Stratigraphic ◽  
Stratigraphic Division ◽  
High Resolution Sequence Stratigraphy ◽  
The Relationship ◽  
Oscillation Characteristics

In this paper, the method and effect of logging curves wavelet transform in high-resolution sequence division are discussed, taking the middle oil sequence stratigraphic of DU-432 oil well in north-Songliao basin as an example. Using Wavelet Transform to GR logging curves, the relationship between logging curve signals and depth is transformed to the relationship between the depth and the scale domain, so that the wavelet curves in different scale are obtained. Then the relationship between the periodic oscillation characteristics of the wavelet curves under the best optimal scale factor and the sequence. Comparing the Sequence Stratigraphic Division by wavelet transform with the manual division, Results show that the Division by Sequence Stratigraphic wavelet transform is more objective and more effective and the Division provides a new way to high-resolution sequence stratigraphy.

scholarly journals Coal-bearing strata sequence stratigraphy of Paleogene Meihe Formation, Meihe Basin, NE China

2020 ◽  
Author(s):  
Yueyue Bai ◽  
Qingtian Lü ◽  
Zhaojun Liu ◽  
Pingchang Sun ◽  
Rong Liu ◽  
...  
Keyword(s):  
Sedimentary Environment ◽  
Seismic Profiles ◽  
Coal Seams ◽  
Third Order ◽  
Sequence Stratigraphic ◽  
Delta Plain ◽  
Accommodation Space ◽  
Geochemical Properties ◽  
Stratigraphic Framework ◽  
System Tracts

AbstractThe Meihe Basin is an important Paleogene coal-bearing basin located in the Dunhua-Mishan Fault Zone, northeastern China. Based on a comprehensive study of well logs, seismic profiles, cores and rock geochemical properties, the coal distribution, paleoenvironment evolution within a sequence stratigraphic framework and the accumulation model to explain how coal seams developed in small fault basin were discussed in detail. Three-third-order sequences were identified in the Paleogene Meihe Formation of Meihe Basin and the two coal-bearing sequences are the Lower Coal-bearing Member of Sequence I and the Upper Coal-bearing Member of Sequence III. All three types of system tracts are developed in both sequences, i.e., the lowstand systems tract (LST), the transgressive systems tract (TST), and the highstand systems tract (HST). In LST of Sequence I, fan delta plain marsh is the main coal accumulating environment where coal seams are thin, discontinuous and therefore uneconomic for mining, and it is the same with all coal seams developed in Sequence III. While in TST and HST of Sequence I, lake swamp is the main sedimentary environment where coal seams are thick, continuous, widely distributed, and thus economically attractive for mining. In the study area, the nice thick economical coal seams are usually developed in an ideal stable depositional environment where organic matter accommodation space grows at a balanced rate with peat, in other words, free of sediment input or channel migration. The key findings of this study could provide guidance for the exploration of coal seams in the Meihe Basin and other similar basins.

Porosity Inversion under the Sequence Stratigraphy Framework

2014 ◽  
Vol 989-994 ◽  
pp. 1424-1427
Author(s):  
Wei Yang ◽  
Ming Yi Hu
Keyword(s):  
Reservoir Prediction ◽  
Seismic Section ◽  
Sequence Stratigraphic ◽  
Reservoir Development ◽  
Stratigraphic Framework ◽  
Multiple Attribute ◽  
Great Heterogeneity ◽  
Single Well ◽  
Main Period ◽  
System Tracts

Carbonate reef reservoir buried deeply, show great heterogeneity, Therefore, effective reservoir prediction is the key to the biohermal reservoir. In practical research, based on of the single well sequence stratigraphic framework, combined with these sequence stratigraphic framework and seismic section, found the reservoir development area in the longitudinal, which sq1-HST and sq3-HST is the main period of reservoir development, and then through the seismic Seismic multiple-attribute inversion, predicted porosity of system tracts of reservoir development in the sequence stratigraphic framework. Porosity inversion results shown, Changxing formation reservoir is mainly distributed in the central and north-central of Jiannan area.

scholarly journals Coal-bearing strata sequence stratigraphy of Paleogene Meihe Formation, Meihe Basin, NE China

2020 ◽  
Author(s):  
Yueyue Bai ◽  
Qingtian Lü ◽  
Zhaojun Liu ◽  
Pingchang Sun ◽  
Rong Liu ◽  
...  
Keyword(s):  
Sedimentary Environment ◽  
Seismic Profiles ◽  
Coal Seams ◽  
Third Order ◽  
Sequence Stratigraphic ◽  
Delta Plain ◽  
Accommodation Space ◽  
Geochemical Properties ◽  
Stratigraphic Framework ◽  
System Tracts

Abstract The Meihe Basin is an important Paleogene coal-bearing basin located in the Dunhua-Mishan Fault Zone, northeastern China. Based on a comprehensive study of well logs, seismic profiles, cores and rock geochemical properties, the coal distribution, paleoenvironment evolution within a sequence stratigraphic framework and the accumulation model to explain how coal seams developed in small fault basinsw were discussed in detail. Three third-order sequences were identified in the Paleogene Meihe Formation of Meihe Basin and the two coal-bearing sequences are the Lower Coal-bearing Member of Sequence I and the Upper Coal-bearing Member of Sequence III. All three types of system tracts are developed in both sequences, i.e., the lowstand systems tract (LST), the transgressive systems tract (TST), and the highstand systems tract (HST). In LST of Sequence I, fan delta plain marsh is the main coal accumulating environment where coal seams are thin, discontinuous and therefore uneconomic for mining, and it is the same with all coal seams developed in Sequence III. While in TST and HST of Sequence I, lake swamp is the main sedimentary environment where coal seams are thick, continuous, widely distributed, and thus economically attractive for mining. In the study area, the nice thick economical coal seams are usually developed in an ideal stable depositional environment where organic matter accommodation space grows at a balanced rate with peat, in other words, free of sediment input or channel migration. The key findings of this study could provide guidance for the exploration of coal seams in the Meihe Basin and other similar basins.

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