建立和发展岩性地震勘探法

岩性地震勘探法是相对于构造地震勘探法而言的。过去的地震勘探法只是研究地下构造,七十年代以来,逐步发展了亮点法和虚测井等研究地层岩性的方法,包括直接找油气。这些都还只是间接对比岩性的方法,从地震剖面直接提取各种弹性波参数的直接对比方法,还有待于发展。文中评述了间接对比方法的各个步骤的要点及直接对比方法的可能途径。

BUILDING-UP AND DEVELOPMENT OF LITHOLOGIC SEISMIC PROSPECTING

Lithologic seismic prospecting contrasts sharply with structural seismic prospecting. In the past, seismic prospecting was aimed at the underground structure. In recent years, the methods of "bright-spot" "pseudo velocity log" etc., have been developed for the study of lithologic characters of strata and searching for hydrocarbon ever since the 70's. The methods already accepted by geophysicists are proved to be an "indirect lithologic correlation" （compare the known well with section）. As to "direct correlation " e.g. the most of elastic wave parameters to be extracted from seismic section is still under development.Remark and evaluation about the essentials of the indirect correlation and the way recommendable to the direct correlation were made in this paper.