Australian Society of Exploration Geophysicists

Abstract The Minimum Entropy Deconvolution (MED) technique of Wiggins (1977) represents a breakthrough in deconvolution and will undoubtedly find wide application in many fields. MED does not require any phase assumptions about the disturbing function and seeks a deconvolved output which consists of the smallest number of large spikes consistent with the input data.The efficiency of MED is much improved when an exponential transformation is incorporated into the algorithm. This is particularly true when the input traces contain additive noise. In this case the noise suppression characteristics of MED are considerably enhanced by the transformation and the identification of smaller spikes is improved. This paper also presents a kurtosis criterion of simplicity rather than the varimax norm introduced by Wiggins. It appears that for a multiple trace input the kurtosis measure leads to improved results.

The treatment of this subject is best developed by one who has been on both sides and in the middle. The problem (briefly stated) is the general feeling that the two disciplines are not mutually appreciative of each other and are, therefore, less effective as an exploration team than would otherwise be the case. One must understand that, as long as exploration continues to change, to foster the introduction of new methods, and to use men trained in a wide variety of specialties, complete mutual appreciation should not be expected. Complete appreciation will be possible only when the exploration industry is stagnant. It is management's business to optimize the situation by vigorous use and continuous training of earth scientists, and it is everybody's business to avoid unreasonable attitudes and statements. End_of_Article - Last_Page 482------------