The High Resolution Sequence Stratigraphic Isochronous Framework in Threezhao Peripheral Zone

2014 ◽  
Vol 989-994 ◽  
pp. 1359-1363
Author(s):  
Zhang Na ◽  
Chen Zhi Liu ◽  
Peng Li
Keyword(s):  
High Resolution ◽  
Peripheral Zone ◽  
Analysis Data ◽  
Complete Medium ◽  
Sequence Stratigraphic ◽  
Sedimentary Characteristics ◽  
Base Level ◽  
Mud Logging ◽  
High Resolution Sequence Stratigraphy

In detailed study on sedimentary characteristics of Fu Yang reservoir around Threezhao area, based on the theory of high resolution sequence stratigraphy of the base level cycle isochronous contrast, regard short-term base-level cycle as the minimum isochronous contrast comparing unit, this paper has carried on the fine high-resolution isochronous contrast of the reservoir in the studied area, and the high resolution[1] sequence division of different orders of base-level cycle of Fuyu oil layer and Yangdachengzi oil layer. The Fuyu reservoir is divided into one complete long-term base-level cycle and three complete medium-term base-level cycle; while Yangdachengzi reservoir is divided into a long-term base-level rise hemicycles and 3 middle-term base-level rise hemicycles. According to mud logging, well logging and core analysis data, the sands group stratified mark of the Fuyu reservoir has been determined.

High Resolution Sequence Stratigraphic Frameworks Research in the XII Group of the Member III of Qing Shankou Formation in the Qian'an Oilfield

2013 ◽  
Vol 339 ◽  
pp. 728-731 ◽  
Author(s):  
Cun Lei Li ◽  
Lei Qin ◽  
Xue Li ◽  
Xi Long Zhang
Keyword(s):  
High Resolution ◽  
Stratigraphic Correlation ◽  
Short Term ◽  
Middle Term ◽  
Sequence Stratigraphic ◽  
Base Level ◽  
Mud Logging ◽  
High Resolution Sequence Stratigraphy ◽  
Symmetric Structures

With the instruction of the high resolution sequence stratigraphy and sedimentology theory, and the comprehensive application of 11 wells core, more than 800 mud logging and log data, high resolution sequence stratigraphic characteristics research in the XII Group of the Member III of Qing Shankou Formation in the Qianan oilfield has been finished. The results show that the study area can be divided into one middle-term base level cycle and five short-term base level cycles. The only sequence structure of middle term cycle is (B type) and the short term cycle mainly consists of B types meanwhile there are small mounts of upward deepening structures (A type) and symmetric structures (C type). Based on the classification of base-level cycles, fine stratigraphic correlation is conducted by using isochronous cycle correlations. In addition, 15 high resolution sequence stratigraphic frameworks are established which unify the study area and provide the solid geological basis for the sandstone distribution, the identification of mainly oil-bearing sand bodies and potential oil reservoirs.

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.

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.

High Resolution Sequence Stratigraphic Study of Single Sand Body in the Complex Reservoir in High Water-Cut Period: Take the Member I of Qing Shankou Formation of Hei 96 Block of Songliao Basin for Example

2013 ◽  
Vol 339 ◽  
pp. 732-736
Author(s):  
Lei Qin ◽  
Cun Lei Li ◽  
Yan Li ◽  
Jing Zhe Li
Keyword(s):  
High Resolution ◽  
High Water ◽  
Stratigraphic Correlation ◽  
Short Term ◽  
Sequence Stratigraphic ◽  
Base Level ◽  
Control Functions ◽  
High Water Cut ◽  
Water Cut ◽  
High Resolution Sequence Stratigraphy

With the method of the high resolution sequence stratigraphy and sedimentology theory, oil-bearing sand bodies have been accurately recognized and descripted which could provide precisely geological data for 3-D modeling and numerical simulation. It has the vital significance for the development of oilfield during the late stage of high water cut. According to the drilling, logging, seismic and analytical experiments data, the results show that the study area can be divided into one long-term base level cycle, four middle-term base level cycles, sixteen short-term base level cycles and twenty-eight super short-term base level cycles. Based on the classification of base-level cycles, control functions of cycles which have effects on the sediment environment have been discussed. And with the application of the chronostratigraphic correlation fine stratigraphic correlation, 10 high resolution sequence stratigraphic frameworks are established in the direction that is parallel and perpendicular to the source.

The Meaning of Wavelet Transform in High Resolution Sequence Stratigraphy Study

2013 ◽  
Vol 411-414 ◽  
pp. 3035-3038
Author(s):  
Zhan Dong Li ◽  
Meng Li ◽  
Yan Liu
Keyword(s):  
Wavelet Transform ◽  
High Resolution ◽  
Sequence Stratigraphy ◽  
Wavelet Coefficient ◽  
Scale Factor ◽  
Sequence Stratigraphic ◽  
Natural Gamma ◽  
Set Up ◽  
Morlet Wavelet Transform ◽  
High Resolution Sequence Stratigraphy

Taking the division of Gao3 reservoir group strata sequence in Songliao basin of Daqing Changyuan Xingbei for example, this paper analyzed the applicability of the one-dimensional continuous wavelet transform in high resolution sequence division. By means of making morlet wavelet transform on the natural gamma logging curve, the connection between well curve signal and depth is transformed to the alter relationship between depth and the domains of scale, which obtains the wavelet coefficient curve. Then set up the corresponding relations between periodic oscillations characteristics of wavelet coefficient curve and sequence interface at all levels under the optimal scale factor. And the wavelet coefficients curve in best scale factor will eventually be used for the identification and division of the sequence. Practice has proved that the wavelet coefficient curve in the best factor can accurately identify the sequence interface at all levels, and the result is more accurate, objective and effective than manual calibration. So take advantage of wavelet transform in sequence stratigraphic classification provides a new way for high resolution sequence stratigraphy studies.

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.

Shallow Gas Distribution Character of Heidimiao Reservoir in Southern Daqing-Changyuan Based on High-Resolution Sequence Stratigraphy

2012 ◽  
Vol 616-618 ◽  
pp. 48-51
Author(s):  
Huan Jun Jia
Keyword(s):  
Gas Distribution ◽  
Distribution Law ◽  
Delta Front ◽  
Shallow Gas ◽  
Base Level ◽  
Sedimentary Microfacies ◽  
Early Rise ◽  
Mouth Bars ◽  
High Resolution Sequence Stratigraphy

By applying the data of drilling core, well logging and 3D seismics and studying the sequence framework, sedimentary microfacies and shallow gas distribution law, it shows that the Heidimiao Reservoir is vertically divided into a long-term, 4 intermediate-term and 25 short-term base-level cycles. Heidimiao Reservoir is of the gentle river controlled sedimentary system of delta front The main microfacies are underwater distributary channels, mouth bars and distal bars. Shallow gas is vertically distributed in the reservoir sandbody at the period of intermidiate hemicycles of late decrease or early rise in long-term hemicycles of the early fall. It is reasonable match of distribution discipline of single sandbody, gas source faults and structure that is the dominated factor for shallow gas plane accumulation. Based on the study above, 90 gas traps are depicted by applying the gas-water interpretation templates.

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.

High Resolution Sequence Stratigraphy Characteristics and Distribution of Donghe Sandstone in Qunkuqiake Region in Tarim Basin

2014 ◽  
Vol 1044-1045 ◽  
pp. 570-573
Author(s):  
Mu Wei Cheng
Keyword(s):  
Tarim Basin ◽  
High Frequency ◽  
Oil And Gas ◽  
Sedimentary Environment ◽  
Sedimentary Facies ◽  
Sequence Stratigraphic ◽  
Sedimentary Characteristics ◽  
Sand Body ◽  
Frequency Sequence ◽  
High Resolution Sequence Stratigraphy

Qunkuqiake Region is an important exploration block in Tarim Basin. Donghe Sandstone is the main oil and gas target stratum. In order to reveal the rules of migration of the sand body and predict the favorable reservoir accurately, two high-frequency cycles are identified in Donghe Sandstone each of which consists of rising hemicycle and descending hemicycle, the sedimentary characteristics are analysed within the sequence stratigraphic framework and the barrier bar subfacies are identified beginning with the sedimentary characteristics of glutenite through the study of drilling stratigraphic section using drilling data, well logging data and cores data. This paper has disclosed the transition of the sedimentary environment from barrier-free coast system to barrier coast system during the period from rising hemicycle to descending hemicycle and the planar distribution of sedimentary facies of different high frequency sequence of Donghe Sandstone.

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