Changes

==Components for AVO analysis==

==Components for AVO analysis==

The [[amplitude]] versus [[offset]] (AVO) phenomena on [[seismic data]] can provide substantial exploration and development information. Under good conditions the information extracted can be as detailed as an elastic layered model of the earth in the vicinity of the exploration or development target. To accomplish this goal, a systems approach to the problem is used. Major components of such a system analysis procedure are as follows:

The [[amplitude]] versus [[offset]] (AVO) phenomena on [[seismic data]] can provide substantial exploration and development information. Under good conditions the information extracted can be as detailed as an [[elastic model|elastic layered model]] of the earth in the vicinity of the exploration or development target. To accomplish this goal, a systems approach to the problem is used. Major components of such a system analysis procedure are as follows:

* ''AVO feasibility studies''—Ascertain the general applicability of this technique to the problem at hand.

* ''AVO feasibility studies''—Ascertain the general applicability of this technique to the problem at hand.

* ''Proper AVO data processing''—Emphasize maintaining and enhancing the proper amplitude relationships.

* ''Proper AVO [[Basic seismic processing|data processing]]''—Emphasize maintaining and enhancing the proper amplitude relationships.

* ''AVO scanning''—Find anomalous regions of amplitude with offset on seismic data.

* ''AVO scanning''—Find anomalous regions of amplitude with offset on seismic data.

* ''Detailed AVO modeling supported by well log data''—Provide base information upon which to judge and interpret the AVO study using well log data in the vicinity of an exploration target.

* ''Detailed AVO modeling supported by well log data''—Provide base information upon which to judge and interpret the AVO study using well log data in the vicinity of an exploration target.

* ''Elastic model inversion at prospective locations''—Identify potential reservoirs and describe them numerically prior to drilling.

* ''Elastic model [[Seismic inversion|inversion]] at prospective locations''—Identify potential reservoirs and describe them numerically prior to drilling.

Readers interested in additional information on AVO analysis should begin by consulting the work of Hilterman,<ref name=pt07r19>Hilterman, F. J., 1990, Is AVO the seismic signature of lithology? A case history of Ship Shoal-South Addition: Geophysics—The Leading Edge, June, p. 1522.</ref> Neidell,<ref name=pt07r38>Neidell, N. S., 1986, Amplitude variation with offset: Geophysics—The Leading Edge, March, p. 47–51.</ref> and Ostrander.<ref name=pt07r43>Ostrander, W. J., 1984, Plane-wave reflection coefficients for gas sands at nonnormal angles of incidence: Geophysics, v. 49, p. 1637–1648, 10, 1190/1, 1441571.</ref>

Readers interested in additional information on AVO analysis should begin by consulting the work of Hilterman,<ref name=pt07r19>Hilterman, F. J., 1990, Is AVO the seismic signature of lithology? A case history of Ship Shoal-South Addition: Geophysics—The Leading Edge, June, p. 1522.</ref> Neidell,<ref name=pt07r38>Neidell, N. S., 1986, Amplitude variation with offset: Geophysics—The Leading Edge, March, p. 47–51.</ref> and Ostrander.<ref name=pt07r43>Ostrander, W. J., 1984, Plane-wave reflection coefficients for gas sands at nonnormal angles of incidence: Geophysics, v. 49, p. 1637–1648, 10, 1190/1, 1441571.</ref>