...Research on the fine characterization of faults based on structure orientation Heng Zhang*, Jianli Wang, Wenbin Li, Jiaguo Ma. Tianjin Branch of CNOOC Ltd. Summary This paper starts with the actual geological conditions of the work area. First, the original seismic data is structure- Bohai C...

... of logging information and low resolution of seismic data. In view of this feature, this paper adopts the seismic High resolution processing technology of compressed high-resolution processing technology based on compressed sensing sensing. This method uses the principle of compressed sensing to recover...

... to balancing obtain seismic data with high-resolution and high-fidelity, which effectively improves the quality of seismic data. The frequency balancing method based on wavelet Furthermore, pre-stack frequency division inversion transform is used to expand the frequency of original seismic technology...

... distribution of dessert layers. This method use a computationally efficient forward modeling engine in plane wave domain to estimate high resolution subsurface isotropic elastic earth model from prestack seismic data volumes in arbitrary and reasonable time frames. Starting from an initial velocity model...

... the above problems, we regard horizons extraction as image segmentation based on the characteristics of seismic horizons. Using the feature extraction ability of convolution neural network, we propose a 3D-Unet model for horizons tracking of 3D seismic data. After training, we can use the model to predict...

... in the activities of main faults, development of branch faults, and distribution of Geology setting cracks and cavities, resulting in poor identification of the fault zone by the original seismic data. Fractured-vuggy Previous studies ((Qi and Li, 2019) have shown that the reservoirs are characterized by strong...

... reservoir characterization seismic data interlayer reflection coefficient upstream oil & gas applied geoscience mudstone interlayer sparse inversion technique thickness exploration geophysicist 10 seismic resolution thin-interbed reservoir identification new method drilling...

... algorithm greatly reduces the quality of seismic data and brings (FISTA) is introduced into the learning of a classical over difficulties to the subsequent data processing and complete dictionary K-SVD. By giving different seismic data, interpretation. Improving the signal-to-noise ratio of seismic an ideal...

... variation of lithology, complex pore structure, rapid permeability change and strong heterogeneity. So it is a great challenge for complex reservoirs to obtain physical parameters such as permeability, porosity and shale content directly from seismic data. In order to solve this problem, this paper...

... Due to the strong absorption and attenuation of the gas cloud, seismic data lose a lot of energy, resulting in a blank reflection, which brings great difficulties to seismic data interpretation and reservoir prediction. Seismic data quality in the gas cloud area is poor, and it is very difficult...

... Obtaining the instantaneous frequency of seismic data by Hilbert transform is widely used in reservoir prediction and fluid identification. In order to obtain high accuracy and clear physical significance instantaneous frequency, it is usually required that the analyzed signal is stationary...

... represented by the seismic event axis, we can convert the seismic data to the first and second derivatives along different directions and it expressed as u(t, x, y) = u + + = + + (2) x Among them, u(t, x, y) represents the original amplitude of the seismic data at the location x and y at time t, p, q, r...

... adopt the frequency division processing of seismic data Generally, there is little difference between oil-bearing and based on the generalized S-transform with variable factors water-bearing physical properties of single-layer reservoir. and extract the sum of dominant energy as sensitive As a result...

... inversion based on the time-varying wavelet. As a result, inversion results with higher accuracy than conventional methods can be obtained. This method was applied to improve the quality of seismic data of thin interbedded reservoirs in Bohai P oilfield, and highresolution seismic data was obtained, which...

... gradually. Therefore, we propose a new approach of seismic resolution enhancement based on calculus theory. The core of this method is to calculate the differential and integral of the original seismic data, select the differential data of appropriate order, fuse with the original data and integral data...

... of 3D seismic data sets followed by an integrated application of multidisciplinary workflows successfully derisked key petroleum system elements of the Lang Lebah structure, yielding a more optimistic view of its potential. A new well was justified at Lang Lebah and resulted in one of the major gas...

... In a contrarian move, Occidental built an in-house seismic technology team with substantial capabilities and capacity from scratch over the last five years. During this timeframe, most operators and service companies significantly reduced their seismic data processing capacity. Occidental’s...

.... However, seismic data contains uncertainties arising from the earth model building process used to obtain them. The seismic industry has therefore turned to seismic uncertainty analysis (SUA) workflows to analyze and quantify this model uncertainty. In this paper, we present a case study of SUA as used...

... the resolution of Volcanic rocks are well developed and widely distributed in the seismic data near the Neogene basement. Based on the reasonable northern South China Sea, and favorable reservoirs with pores and prediction of the location of source rocks of Neogene Wenchang pores are common in volcanic rocks...

... One issue that can be found when working with seismic data is the lack of temporal resolution, which complicates the geological interpretation. One way to alleviate this issue is by means of the so-called frequency enhancement techniques, whose main goal is to widen the data original bandwidth...