After VSP well logging materiel of well Tadong2 etc. demarcating Tg3、Tg5、Tg5′and Tg6 marker bands,we identified and compartmentalized the seismic facies of the seismic sequence.

STRATIGRAPHIC SEQUENCE DIVISION BASED ON WAVELET TRANSFORM OF LOGGING DATA∶A CASE STUDY OF THE XUJIAHE FORMATION IN XIAOQUANXINCHANG-FENGGU AREA,SICHUAN PROVINCE

We design a multi-resolution illuminance transform by combining multi-resolu-tion approximation of wavelet theory with the method described in reference 4, 5.The application example shows that the transform method can be applied to oddness detection, seismic stratigraphic sequence analysis and high-resolution seismic data processing.

THE METHOD OF DIVISION THIRD-DEGREE SUCCESSION OF STRATA BY GAMMA RAY LOGGING WAVELET ANALYSIS IN STATIONARY CONTINENTAL FACIES DEPRESSION BASIN:TAKING YANCHANG FORMATION OF ORDOS BASIN AS AN EXAMPLE

We shall construct a generating set of a nonfinitely generated Ga-invariant ring given in Freudenburg's counterexample by making use of an integral sequence which was constructed inductively by Freudenburg.

The classical Rudin-Shapiro construction produces a sequence of polynomials

A Generalized Sampling Theorem with the Inverse of an Arbitrary Square Summable Sequence as Sampling Points

In this article a generalized sampling theorem using an arbitrary sequence of sampling points is derived.

The mathematical concept of frames is utilized in the analysis of the properties of the sequence of sampling functions.

The analysis of facies associations revealed that the formation was deposited as a symmetrical transgressive-regressive rock succession representing a common stratigraphic sequence.

The bottom of the stratigraphic sequence of the Dzhugdzhur deep-seated granulite complex was determined to consist of a stratified metabasite-enderbite association.

2(a), (b)), reflecting the evolutional difference of oceanic environment and stratigraphic sequence between the upper and lower layers separated by the depth of 160 cm.3.Through a correlation of δ18O values, the core from No.

Human beings' activities on tidal flat have disturbed the vertical distribution of sediments in stratigraphic sequence and accelerated the sedimentation rates.

Measurements of ground resistivity or radar surveys in a raster of 0.5 or 0.5×0.05?m, respectively, are used to gain information on archaeological structures and on the main stratigraphic sequence of sites covering up to 0.5?ha per day.

Good permeability interconnectivity is evidenced by a high oil saturation state in the vertical sequence of strata.

Today, we recognize these rocks as part of Europe's predominantly sedimentary Paleozoic sequence of strata.

The deposit is a unitary sequence of strata with general east-west continuity.

A Seismic-Sequence Stratigraphy Supplementary System of Sedimentary Basins (abbreviated as 4S) was established by the author based on studies of the basins such as Caidam, Jungar, Erdos, North China and Nanning.4S,which consisting of three main blocks, data of exploration statistics, establishment of quantificational method and the opening of the model, is a microsoft system consistuated of more than 4000 scree statements, its functions include the synthetical data-operation of ground geology, seismology, well...

A Seismic-Sequence Stratigraphy Supplementary System of Sedimentary Basins (abbreviated as 4S) was established by the author based on studies of the basins such as Caidam, Jungar, Erdos, North China and Nanning.4S,which consisting of three main blocks, data of exploration statistics, establishment of quantificational method and the opening of the model, is a microsoft system consistuated of more than 4000 scree statements, its functions include the synthetical data-operation of ground geology, seismology, well logging and sample analysis ; quantitative study many of the problems realated to seismic-sequence stratigraphy of the target stratum such as the sedimentary facies, sedimentary system, flow direction of palaeodrainage, prospect the distribution of source, reservoir and cap rocks of hydrocarbon generation, seismic simulation of the model of two-dimentional sedimentary model, three-dimentional slice of sedimentary sequence and its surficial morphologic image and so on. Both of the data systems used in 4S and the target result are different from the currently adopted ones that used especially for the explaination of seismic data and basin modelling. There are five specialities of 4S: (1) Diversified data. It includes all of the data and statistics of surficial geology, well logging, seismic exploration, sample analysis, downhole oil-gas determination, and digitized concepts and experiences. (2) Quantitatited analysis. All of the descriptive information are digitized, this led to the quantitative analysis of lithology, sedimentafy environment, sedimentary system and so on. (3) patterned explaination. Set up a model on the basis of a known spot firstly, then use it in the frontier area. (4) Software-equipped system, i. e., block programme structure, it can data out more than 40000 statements, over 40 figures and 20 more tables. (5) Automatized programme. There are 3 blocks, 8 grades of menu and more than 180 sub-routines that can run as a whole programe or seperately, moreover, the oprator can joint the sub-routines as he will. 4S data, figures and knowledge bank are sub-divided into four sub-reservoirs, they are: original data source, intermediate data, figure and knowledge material. Original data includes the message of outcrups, section of drilling hole, seismic exploitation, sample test, and downwell oil-gas determination; Intermediate data is composed of the data generated during the running of system ; Figure sub-bank consists of the source figure and final figures ; Knowledge sub-bank is the foudation of general concepts and some special concepts, such as sedimentary facies and standard models. There are eight explainning models of 4S that established based on the konwn part of a basin, they are:(1) Time-lithologic sequence Markov chain model. Use the quantificated method of Markov chain to determine the known lithologic sequence, extract out the multi-models of lithofacies,and contrast them with standard models, then confirm the genetic type of the litho-seqquences.Generally, the results will be better if the lithologic assembledge profile is used to analysis the count matrix and transformation matrix of every lithostratigraphic unit.(2) Frenquence spectrum analysis model of time-lithologic sequence. Marke spectrum analysis on the known sequences and identify the maximum cycle and wave band of a certain typical geological feature that found in a sequence.The maximum cycle and wave band should be similar if the sequences have correlated genetic type. That is to say, if a geological phenominon occured in two sequences isochronously and with similar extent, then the sequences should be genetically correlation.(3) Various kind of poly-statistical model: 4S can simulate data by means of funtional relations, it equipped with basically complete poly-statistical methods, and has the digit-opration such as digit wave filter, Fulier period analysis and correlation analysis.(4) Velocity-lithologic assembledge of sedimentary factes model. This model is the basis to explain of the underground facies. It is revealed that as

Functions of the LandMark Ⅳ workstation may achieve lateral reservoir prediction using seismic data. The LandMark Ⅳ workstation can accomplish forward modeling detailed reservoir calibration using comprehensive data sedimentary sequence analysis minute interpretation of reservoir reflections obtaining the interpretation data in each bin by automatic regional tracing technique based on reflection horizon interpretation. acquirement of different seismic informations from horizon interfaces or between interfaces...

Functions of the LandMark Ⅳ workstation may achieve lateral reservoir prediction using seismic data. The LandMark Ⅳ workstation can accomplish forward modeling detailed reservoir calibration using comprehensive data sedimentary sequence analysis minute interpretation of reservoir reflections obtaining the interpretation data in each bin by automatic regional tracing technique based on reflection horizon interpretation. acquirement of different seismic informations from horizon interfaces or between interfaces in regular seismic grid graphically analysing these informations so as to compute their gradients and ranges of variation for phase variation interpretation to predict favourable hydrocarbon-bearing zone by making statistical pattern recognition of multiple kinds of informations from the horizons involved reservoir description using lithologic parameters.

Progradational reflection configuration is a very significant reflection phenomenon in seismic section. It can be used to determine boundaries of depositional sequence and system tracts, current direction, hydraulic energy and manifold depositional environ ments. We discuss the multiclassification of progradational reflections, the difference be tween progradation and lateral accretion,the relation between progradation and sequence or system tract,the identification of false progradation,and so on. Six kinds...

Progradational reflection configuration is a very significant reflection phenomenon in seismic section. It can be used to determine boundaries of depositional sequence and system tracts, current direction, hydraulic energy and manifold depositional environ ments. We discuss the multiclassification of progradational reflections, the difference be tween progradation and lateral accretion,the relation between progradation and sequence or system tract,the identification of false progradation,and so on. Six kinds of sedimen tary environrnent causing progradational reflection are listed,which are alluvial fan,fan delta,delta,turbidite fan, continental slope, and carbonate platform margin.