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本文阐述了在地震勘探程度较高的辽河西部坳陷进行重力细测的地质效果。作者对PGM数字处理系统多种数字处理方法的成果作了比较后,发现哈克、艾尔金斯等传统计算方法的地质效果不及级数法二次导数、垂直四次导数法的地质效果好。在该区采用上述办法发现约40个局部重力异常,一般与钻井,地震勘探成果吻合较好。甚至部分异常在地震解释中被忽略了。文中还用各种数字处理方法的定量计算成果与本区的钻井,地震勘探成果作了比较。发现各种计算方法的成果各有所长,但对石油勘探来说,以变密度计算方法的成效最佳。
This paper describes the geological effects of fine gravimetric measurement in the western Liaohe, a high degree of seismic exploration. After comparing the achievements of various digital processing methods of the PGM digital processing system, the authors found that the geological effects of the traditional calculation methods such as Huck and Elkins are less than the second derivatives of the series method and the geological effects of the vertical fourth derivative method . About 40 local gravity anomalies were found in this area using the above method, which is generally in good agreement with drilling and seismic exploration results. Even some anomalies were neglected in seismic interpretation. In this paper, the quantitative calculation results of various digital processing methods are also compared with the drilling and seismic exploration results in this area. The results of various calculation methods have been found to have their own strengths, but for oil exploration, the method of variable density calculation is most effective.