Basic principles of the seismic method
In the earth, seismic waves can propagate as longitudinal (P) or as shear (S) waves. For free space, the one-dimensional wave equation is derived. The wave phenomena occurring at a …
Enhancing the seismic response of faults by using a deep …
Results from one synthetic seismic image and three real seismic data demonstrate that our proposed method can effectively restore the sharpness of fault surfaces, particularly for faults with small displacements. Compared to the structural smoothing method, the network we trained achieves optimal fault enhancement.
US2503904A
US2503904A - Seismic prospecting method - Google Patents Seismic prospecting method Download PDF Info Publication number US2503904A ... seismic caliche feet layer Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to ...
Seismic methods in mineral exploration and …
Seismic methods provide high-resolution images of geologic structures hosting mineral deposits and, in a few cases, can be used for direct targeting of mineral deposits. Applications are not limited to only surface seismic surveys, but …
Multi-source seismic geological ahead-prospecting for …
the TBM modification, the conventional active source seismic prospecting method previously employed in the open type TBM section became unsuitable. Consequently, we adopted TBM drilling source seismic prospecting technology, refining the arrangement of geophones to capture high-quality seismic signals. Employing this strategy allowed for continuous
Method of three dimensional seismic prospecting
This work presents Mashka orthogonal matching pursuit (OMP), a method consisting of two nested OMPs for separating seismic sources at an early stage of the signal processing …
SEISMIC METHOD OF PROSPECTING
This general method of seismic prospecting permits the determination of valuable geological information particu larly useful, for example, in the exploration for petro leum. One difficulty in using seismic prospecting methods is that of analyzing the seismic records obtained. The records are of such a nature due to the complexity of the
Paper
In view of this fact it is surprising how late, relatively speaking, geologic prospecting by seismic methods has been taken up, although the first suggestion was made 40 years ago—that travel-time curves of artificial explosions might be used for the study of the change of the velocity of seismic waves as depth. Further suggestions of ...
Methods of prospecting for oil and gas in fuel geology
• The seismic reflection method is the most widely used prospecting method in the petroleum industry, since it provides a high definition of geological features in a sub-surface area conducive to the accumulation of hydrocarbons. • More than 90% of the prospecting investments are applied in reflection seismic.
Fundamentals of Geophysical Data Processing
Prospecting-Geophysical methods-Data processing. 2. Petroleum-Geology-Data processing. I. Title. TN271. P4C6 1985 622'. 15'02854 84-28343 ISBN 0-86542-305-9 ... Sherwood and Francis Muir introduced me to reflection seismic prospecting and some unorthodox ways of thinking about it. Several generations of students were a great
Seismic methods in mineral exploration and mine …
Seismic methods provide high-resolution images of geologic structures hosting mineral deposits and, in a few cases, can be used for direct targeting of mineral deposits. Applications are not limited to only surface seismic surveys, but also …
Seismic Surface-wave Prospecting Methods for Sinkhole …
We have suggested Vs estimation using surface-wave prospecting methods, based on surface-wave dispersion measurements and inversion. Two approaches have been used. Along the Israeli shoreline, Vs mapping has been performed to discriminate weak and hard zones within salt layers, after calibration of inverted Vs near boreholes.
Seismic Prospecting Method Applied to the Detection of …
Seismic Prospecting Method Applied to the Detection of Offshore Breakwater Units Settling in the Seabed. Takujiro Miyamoto ... In this context, a series of observations were performed at the west coast of Niigata from 1984 to 1985, where seismic prospecting provided a reasonable estimate of breakwater cross sections under the water level as ...
Seismic prospecting?
Seismic prospecting, also known as seismic surveying or seismic exploration, is a method used in the oil and gas industry to locate and estimate the size of underground oil and gas reserves. This technique involves generating and recording seismic waves that travel through the Earth's subsurface, allowing geologists to create detailed images of ...
Three-Dimensional Seismic Ahead-Prospecting Method …
Accurately realizing this geology helps to guarantee safety during construction using a tunnel boring machine (TBM). The paper proposes a three-dimensional (3D) seismic ahead-prospecting method by optimizing a filtering method and an imaging algorithm. In this paper, a united filtering method based on f – k and τ – p filtering is ...
RU2263932C1
FIELD: seismic prospecting. SUBSTANCE: method can be used when prospecting oil and gas fields. Method is based upon forming of random wave field (microseism) on the base of microseisms received during seismic prospecting works at profile and area observations. Wave field is formed by creating series of time fields composed by totality of routes being equally …
Advantages and Disadvantages of Seismic Methods
The seismic methods are simply more expensive to undertake than other geophysical methods. Seismic can produce remarkable images of the subsurface, but this comes at a relatively high economic cost. Thus, when selecting the appropriate geophysical survey, one must determine whether the possibly increased resolution of the survey is justified in ...
SEISMIC METHOD | PPT
It describes how seismic waves are generated artificially and recorded to map subsurface structures and lithologies. The main methods discussed are 2D and 3D seismic surveys. 2D surveys involve collecting …
An overview of ahead geological prospecting in tunneling
The tunnel seismic prospecting method adapts Vertical Seismic Profiling (VSP) and multi-wave seismic exploration technology developed by the petroleum industry. VSP is …
GEOPHYSICAL PROSPECTING METHODS
Geophysical Prospecting Methods 4 GLOSSARY The following is an abbreviated description of the geophysical methods mentioned above and some of the typical units that are used: Resistivity: Any of the techniques (including IP) using transmitter and receiver electrodes where the depth of exploration is based on the geometry of the array.
RU2267801C2
FIELD: seismic prospecting. SUBSTANCE: observation is made inside internal points of medium inside hole. After the wave field is registered, it is divided to incident and ascending reflected waves by subsequent subtraction of oscillations, which have different sign of apparent velocity. The filter is calculated on the base of field of incident waves which filter compensates …
The Seismic Method : Principles and Applications
The seismic method is a crucial technique in geophysics that plays a significant role in understanding the subsurface structure of the Earth. It is widely employed in various …
Advance Grouting Test Using Seismic Prospecting Method …
Advance grouting is an important approach to reinforce the rock mass ahead of the tunnel face in TBM tunneling. To estimate the grouting result in TBM tunneling, a test method based on seismic ahead prospecting method was proposed. To check the grouting result, the seismic ahead prospecting was applied firstly to obtain the distribution and location of …
Three-Dimensional Seismic Ahead-Prospecting Method …
The tunnel seismic ahead-prospecting method is used to estimate adverse geology ahead of the tunnel face. Accurately realizing this geology helps to guarantee safety during construction using a ...
Surface-wave geological exploration method based on …
Three-dimensional seismic ahead-prospecting method and application in TBM tunneling. Three-Dimensional Seismic Ahead-Prospecting Method and Application in TBM Tunnelling, 143 (2017), p. 04017090. no. 12. Crossref View in Scopus Google Scholar. Liu et al., 2017b. C. Liu, H. Qian, Z. Guo, et al.
A new 3D observation system designed for a seismic ahead prospecting …
The tunnel seismic ahead prospecting method is usually used to estimate adverse geology ahead of a tunnel face. The observation system plays an important role in tunnel seismic ahead prospecting, which helps to obtain accurate imaging results. Optimizing the observation system is a key issue for seismic ahead prospecting. In this paper, observation …
Method of three dimensional seismic prospecting
Daniel Silverman; Method of three dimensional seismic prospecting, The Journal of the Acoustical Society of America, Volume 67, Issue 1, 1 January 1980, Pages 3
Reflection Seismic Method
Reflection Seismic Method Data and Image sort orders; Seismic Impedance; 2-D field acquisition geometries; CMP binning and fold; Resolution, Stacking charts; Normal Moveout and correction for it; Stacking; Zero-Offset reflection section; Migration. Reading: Reynolds, Chapter 6 Shearer, 7.1-7.5 Telford et al., Sections 4.3, 4.7, 4.8, 4.10
Geophysical prospecting | PPT
This document discusses geophysical prospecting methods used to study the structure of the earth's crust. It focuses on electrical resistivity methods, including resistivity profiling and resistivity sounding. Resistivity …
An overview of ahead geological prospecting in tunneling
Many improved seismic prospecting methods have been proposed since the early 1990s. The tunnel seismic prospecting method adapts Vertical Seismic Profiling (VSP) and multi-wave seismic exploration technology developed by the petroleum industry. VSP is often used in oil exploration, reservoir characterization.
Geophysical Prospecting
Geophysical Prospecting. Volume 72, Issue 7 p. 2615-2633. ORIGINAL ARTICLE. Enhancing the seismic response of faults by using a deep learning-based method. ... Furthermore, coherence-based fault images indicate that seismic images enhanced using our method can improve the accuracy of fault interpretation and yield more continuous fault maps.
8. Wavefront Methods | Seismic Refraction Prospecting
"Wavefront Methods" utilize the intersection of wavefronts drawn from the shot-point and wavefronts drawn from the receiving point or points to form a loci of solutions, which can be interpreted from multi-raypaths and multi-wavefronts. The first paper, "A General Wavefront Method," by Rockwell, discusses the broad picture utilizing wavefront methods and includes …
Seismic prospection instruments. Volume 1 — Schweizerbart …
1 Elements of the seismic prospecting method 1.1 Elements of the seismic prospecting method 1 1.1.1 The basic simplicity1 1.1.2 The seismic disturbance 2 1.1.3 Spherical spreading 2 1.1.4 Seismic velocities 3 1.1.5 Wavefronts and ray-paths3 1.1.6 Reflection coefficients5 1.1.7 Transmission coefficients 7 1.1.8 The qV log and the basic seismic ...
Seismic Refraction Prospecting
The seismic method is divided into reflection and refraction techniques, based on whether or not a wave undergoes a reflection at the extent of its travel. Thus, while most refracted events have not been reflected, most reflected events have been refracted, because a refraction occurs across any velocity interface in accordance with the simple ...
Seismic Prospecting.
Seismic prospecting has its basis in the classical physical principles of transmission, reflection, refraction, and scattering of elastic waves in a layered solid half-space. The great increase in application of the methods ... It is the most expensive method of geophysical prospecting, but also the most powerful. In many areas it can map beds ...