N2d and 3d seismic interpretation pdf merger

The main use of seismic attributes was to create an intuitive display that. Merging in a practical approach different 2d 3d seismic data sets into a single volume reduces drastically the amount of time spent in the data analysis and interpretation of geological features. The oilfield industry over the past several years has been making vast leaps in drilling efficiency. Aug 21, 2003 3d seismic data have become the key tool used in the petroleum industry to understand the subsurface. When designing a 3d survey the most important factors to consider are the geologic requirements of the. This book presents the essential principles and applications of seismic oilexploration techniques. Initial results indicate the data are of high quality and it is now being used to advance our understanding of the hydrocarbon systems. A 2d survey typically contains numerous lines acquired orthogonally to the strike of geological structures such as faults and folds with a minimum of lines acquired parallel to geological structures to allow linetoline tying of the. It is not required to interpret faults on all in and crosslines, but you should show in one or two figures the main fault patterns vertical, horizontal, horizon slices. Fred schroeder, retired from exxonexxonmobil presented on august 22, 2017. Pdf 2d and 3d land seismic data acquisition and seismic. Find, read and cite all the research you need on researchgate. In oil and gas applications, 3d seismic exploration is a mature technology that has profoundly influenced all aspects of exploration and development.

Seismic traveltime inversion, traveltime tomography and seismic reflection techniques have been applied for two dimensional 2d and three dimensional 3d data acquired in conjunction with site characterization and monitoring aspects at a carbon dioxide co 2 geological storage site at ketzin, germany the co 2 sink project. After first 3d seismic data acquisition and processing in gandhar in 199495, the area was covered by a total of twenty different 3d campaigns till date. Application of 3d seismic techniques to evaluate ore. The book can thus be used for teaching a firstlevel graduate class as well as a short course for professionals. Basic geophysics, seismic fundamentals and 3d seismic exploration. Structural interpretation from seismic data is indeed a difficult endeavor. The overall objective of this course is to introduce entry level and or junior geophysicists and geoscientists to the essential acquisition and technical processing concepts and principles that form the basis for value added seismic applications in exploration, field appraisal, and reservoir management. Basic geophysics, seismic fundamentals and 3d seismic exploration by r. Robert stewart, department of geology and geophysics.

One of the three field parties gp x is acquiring 2d land seismic data in west godavari subbasin and. Petrel seismic interpretation enables basin, prospect, and fieldscale 2d and 3d seismic interpretation and mapping. Distribution and coordination across pc based networks peter swanson, brian kenner, and todd krahenbuh l1 abstract niosh has developed an automated pcbased seismic event induced earthquake monitoring system for use in mine ground control studies. The example in figure 1 shows a no reflection zone on the 2d migrated section, while the same zone contains a series of continuous reflections on the 3d migrated section that are easily correlated with reflections outside that zone. Wiggle traces started in the field on paper records. First described in the literature 25 years ago walton. Land and marine seismic acquisition from 2d to 3d 1 land and marine seismic acquisition from 2d to 3d from chapters 712 elements of 3d seismology by chris liner 2. A group of 2d seismic lines acquired individually, as opposed to the multiple closely spaced lines acquired together that constitute 3d seismic data. Seismic interpretation report post peejay 2d 3d seismic surveys t39p, bass basin, offshore northern tasmania march, 2007 introduction this interpretation report provides documentation of the seismic interpretation conducted in t39p and has been. In addition to providing excellent structural images, the dense sampling of a 3d survey makes it possible to map reservoir quality and the distribution of oil and gas. Seismic hydrocarbon exploration 2d and 3d techniques. T7 provides a rich mix of traditional and more innovative methods of seismic interpretation in 2dimensional and 3dimensional contexts. Studies for acceptance, a thesis entitled acquisition, processing, and interpretation of pp and p s 3d seismic data submitted by glenn allen larson in partial fulfilment of the requirements of the degree of master of science.

In every country where the author has consulted 18 countries on 6 continents, 3d techniques are either being used or are under serious consideration. To follow the first part of the book, the reader is only expected to have an elementary understanding of 2d seismic methods. Generate a random line along the 2d seismic line sg8043402 and compare the 3d and 2d data. Seismic data or a group of seismic lines acquired individually such that there typically are significant gaps commonly 1 km or more between adjacent lines. Introduction to 2d3d seismic data acquisition and processing. Hence converted swaves generated from pwave source was used in the survey. Users can work with thousands of 2d lines, thousands of kilometers, and multiple 3d vintages and surveysacross multiple coordinate systems with very high visualization performance gpu based. The playback center of the 1950s added the variable area display to help the interpreter follow structure. Acquisition, processing, and interpretation of pp and ps 3. Fred schroeder, retired from exxonexxonmobil presented on august 3, 2017.

Pros and cons of 2d vs 3d seismic mineral exploration surveys. These gains are not only tallied through advances in casing, drill string or cutting technologies but also through the unsung technologies that have been recently employed and of them, 3d seismic imaging has seen the greatest returns on investment. Focus on the interpretation of the fault pattern in the fault block. Unlike traditional seismic interpretation based on labour intensive. Processing and interpretation of these individual 3d data sets have led to more exploration in the area. Oil intends to hire services for carrying out 2d seismic data. Structural and stratigraphic 3d seismic interpretation of. Pdf 3d seismic interpretation and forward modelingan. The interpretation of the seismic data sets and later drilling results showed that kamalapuram formation of paleoceneeocene age contain a number of hydrocarbon bearing. Interpretation on each line should proceed from wellimaged, wellconstrained portions of the line toward areas of poorer constraint. Pdf on jul 14, 20, omid ahmadi and others published 3d seismic interpretation and forward modeling an approach to providing reliable results from 2d seismic data find, read and cite all. Pdf this is a workaround in petrel to generate 3d seismic cube from 2d seismic data. Durrheim4 abstract as expensive as 3d seismic reflection surveys are, their high.

With their knowledge and application, the students should be able to generate a geologica framework. This lesson defines and describes the steps utilized in seismic interpretation. A global approach in seismic interpretation based on cost function minimization fabien pauget, sebastien lacaze and thomas valding, eliis summary the method presented in this paper is a novel approach for geological modelling from 3d seismic seismic data. Prestack merging of different 3d seismic data sets in. Principles of 3d seismic interpretation and applications. We firmly believe that the best structural work is done more intuitively in a 3dimensional workspace but we also understand that the systematic, sectionbysection approach is still a useful. Pdf 3d seismic interpretation and forward modeling an. Based on the interpretation of the 2d seismic, the company applied for two additional licences in the santaren channel. This course discusses the seismic principles necessary for understanding the concepts of seismic data acquisition and processing. The book starts from the introduction of the basic concepts and methods in 3d seismic imaging. Increasing number of active geophones and shots, and line density, would enhance reliability of the reflections. Nov 24, 2014 the seismic tool must provide a cost efficient alternative to additional drilling.

Introduction to 2d 3d seismic data acquisition and processing for nongeophysicists by k. In this study, the structural system, and the seismic interpretation of middle cretaceous in jk field in southeast muglad basin were interpreted using 3d seismic data volume, well logs, and seismic attributes. So independent p and swave source are not required. Pdf pros and cons of 2d vs 3d seismic mineral exploration.

Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer. After the students have learned about these different steps in detail, they then apply this knowledge to an exercise. Application of 3d seismic techniques to evaluate ore resources in the west wits line goldfield and portions of the west rand goldfield, south africa musa s. But for interpretation of stratigraphy, hydrocarbons. The results demonstrate that seismic measurements intended for refraction interpretation can also be successfully processed using reflection seismic processing methods. Lesson 11 basics of seismic interpretation youtube.

Ppt land and marine seismic acquisition from 2d to 3d. The task of interpreting seismic data requires a broad range of skills and knowledge that must tie information at the basin scale to the prospect and wellbore scale. Map menu spatial search click on the spatial search icon from the map menu below select 2d and 3d seismic lines from the data source drop down box and draw an area on the sarig map. The second and third parties gp y and gp z are deployed in the eastgodavari sub basin of the kg basin, acquiring 3d land seismic data. How 3d seismic imaging revolutionized the drilling industry. Sarig offers two ways to search for and access seismic segy datasets 1. Seismic 2d reflection processing and interpretation of. Threedimensional migration often produces surprisingly different sections from 2d migrated sections see seismic migration.