Can post-stack inversion predict reservoir thickness
Estimating Reservoir Properties from 3D Seismic Attributes Using ...
In this paper, based on amplitude preserved seismic data processing and rock-physics analysis, pre-stack inversion is employed to predict the caved carbonate reservoir in TZ45 area by seriously ...
Delineation of thin-bedded sands and porosity using post …
Post-stack seismic inversion tightly integrates different datasets and provides an accurate and high- resolution image of the subsurface. Selecting a suitable inversion algorithm for reservoir ...
Post-stack Seismic Inversion
This chapter discusses several types of post-stack seismic inversion methods namely model-based inversion, colored inversion, sparse spike inversion, …
Indicative Factors of Reservoir Sensitivity Based on Pre
With the deepened exploration and development of petroleum, pre-stack inversion can predict reservoir and petroleum distribution by extracting elastic parameters by virtue of the gathers.
Utilizing pre-stack simultaneous inversion to predict reservoir ...
In order to accurately predict reservoir physical properties and raise quantitative interpretation precision for the seismic data, in this paper a reservoir physical property prediction technique ...
Utilizing pre-stack simultaneous inversion to predict reservoir ...
This paper innovatively presents a nonlinear prestack inversion based on fruit-fly optimization algorithm (FOA), and tests the performance of the proposed algorithm by the use of Schaffer function F6.
Use of Probabilistic Neural Network and Post Stack Inversion …
Citation: Abosalama A (2022) Use of Probabilistic Neural Network and Post Stack Inversion to Predict Reservoir Characterization in the Mediterranean Sea, Sapphire Field, Egypt. J Geol Geophys. 11:1042. ... often the product of post stack inversion, but pre-stack inversion may produce both acoustic and shear impedance. Sparse spike inversion ...
Rock physics inversion workflow on reservoir parameters: A case …
The calibration of the individual spatial distribution of lithology and porosity from wireline logs data using Gaussian simulation algorithms and post-stack seismic inversion using SVM and PSO ...
Pre-stack inversion for caved carbonate reservoir prediction: A …
The average accuracy of sand body prediction with the method of PP-PS wave combined pre-stack inversion reached approximately 85% which is greater than that of the PP wave post-stack inversion and ...
Seismic inversion (post-stacking vs pre-stacking)
Seismic inversion can be divided into two techniques which are post-stacking and pre-stacking inversion. The first technique, Post-Stacking inversion is the most common …
Application of model based post-stack inversion in the …
This study estimates reservoir properties (i.e. acoustic impedance and porosity) by applying post-stack seismic inversion techniques to a gas prone reservoir in the Sawan area, Southern Indus ...
Estimating V sand and reservoir property from seismic attributes …
The use of seismic attributes and inversion results (pre-stack or post-stack) has proven useful in reservoir characterization (Na''imi et al. 2014;Farfour et al. 2015;Cataldo & Leite 2018 ...
Applications of AVO Attributes in the Prediction of Tight Gas ...
The existing AVO inversion methods are also difficult to predict the tight sandstone reservoir parameters. Most of the existing methods only use synthetic data to verify their effectiveness, and ...
A methodology of porosity estimation from inversion of post-stack …
Objectives of this paper are to (a) develop the relation between porosity and acoustic reflectivity, (b) estimate the porosity wavelet and (c) perform direct inversion of …
Model-based Seismic Inversion: Comparing deterministic and ...
For a post-stack inversion the property model is an impedance model. Pre-stack inversions require input (Vp, Vs, and rhob) property models. ... there are an infinite number of reservoir thickness & impedance combinations that give the same seismic amplitude. ... but it is difficult to predict when this will happen or how significant the change ...
Post stack inversion for reservoir characterization of KG basin ...
Post stack inversion for reservoir characterization of KG basin associated with gas hydrate prospects 203 study, model based inversion and band limited inversion algorithms are used for inverting the seismic data volumes. In model-based inversion we start with a low frequency model of the P-impedance and then perturb this model
Application of seismic post-stack inversion for gas reservoir ...
The thickness of net pay is 2-8 meters. Post-stack inversion shows impedance anomaly around 1580-1590 ms with value 22.000-25.000 ... and density (ρ) from which to predict the fluid and lithology ...
Deterministic and Stochastic Seismic Inversion techniques …
The post-stack seismic inversion workflow was applied in Hampson-Russel Software Suite. A Deterministic approach was followed by a Stochastic approach in an adopted workflow.
Use of PNN and Post Stack Inversion to Predict Reservoir ...
Thus, it can be used to accurately predict reservoir properties in 3D volumes. In the Sapphire gas field, Offshore Nile Delta, we used PNN to predict reservoir petrophysical properties from seismic data. The impedance volume becomes reservoir parameters (effective porosity, water saturation and shale volume volumes). ... Because the post …
Reservoir prediction of deep-water turbidite sandstones with …
The average accuracy of sand body prediction with the method of PP-PS wave combined pre-stack inversion reached approximately 85% which is greater than that of the PP wave post-stack inversion and PP-PS combined post-stack inversion, with accuracy of 64% and 66% respectively.
Reservoir Characterizarion Using Acoustic Impedance Inversion …
Based on the data source, the seismic inversion method into two groups, namely pre-stack inversion and post-stack inversion [5]. Inversion is a geophysical modeling that is carried out to predict ...
Integration of Post-stack Inversion and Rock Physics to …
data source, the seismic inversion method into two groups, namely pre-stack inversion and post-stack inversion [5]. Inversion is a geophysical modeling that i s carried out to predict information ...
Application of pre-stack simultaneous inversion to predict gas …
Pre-stack simultaneous inversion is a seismic exploration technology which is widely applied to recognize lithology and detect oil and gas by analyzing the feature of amplitude variation versus ...
Lithology prediction and pore fluid detection of tight sandstone reservoir
Then we used cross plot of P-wave and S-wave impedance to predict sandstone formation with great thickness, and used cross plot of elastic parameters from pre-stack joint inversion to predict ...
Post-stack seismic inversion analysis plot for a seismic line …
Post-stack seismic inversion analysis plot for a seismic line showing matching between the inverted (red line) and computed acoustic (blue line) impedance within calculation window (yellow line).
Delineation of thin-bedded sands and porosity using post …
logically complex E-sand reservoir. In this study, Bve seismic post-stack inversion algorithms were investigated to delineate the thin-bedded E-sand reservoir of Lower Goru Formation. The dataset includes 3D post-stack volume and two wells, as shown in Bgure 3. Well headers and tops were provided along with LAS Bles. The LAS Ble con-
Seismic Post-stack and Pre-stack Impedance Inversions in …
Converting seismic data to depth by applying a time-to-depth stretch results in incorrect depth registration and reservoir interval thickness. All limitations to …
Use of Probabilistic Neural Network and Post Stack Inversion …
4 Abosalama A OPEN ACCESS Freely available online Figure 4: Deterministic wavelet using five wells used in this study with time response on top and respective amplitude spectrum on the bottom. The phase is constant 180 degree. Note: ( ) Determenistic all wells, ( ) Phase (avg: 178) Figure 5: An example of the well ties in Sapphire De well using …
Improved Prediction of Thin Reservoirs in Complex Structural …
For this purpose, constrained sparse spike inversion and seismic waveform indication inversion were employed to comparatively evaluate oil and gas reservoirs, …
Selection of Sensitive Post-Stack and Pre-Stack Seismic …
In this study, thin gas sand layers of the Lower Ranikot Formation of the Mehar gas field in the Kirthar Fold Belt, Pakistan, have been characterized via the …
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