连续正交地面磁测用于评价含油性  

Application of continuous quadrature ground magnetic survey in the evaluation of oil potential

作　　者：于庆洲[1] 许德树[1] 龙大泉 

机构地区：[1]中国地质大学地球物理与信息技术学院,北京100083 [2]中石化西北石油勘探开发指挥部,新疆乌鲁木齐830000

出　　处：《地质通报》2004年第7期702-706,共5页Geological Bulletin of China

摘　　要：分析了石油勘探中高精度磁测未能获得高品质资料的原因,认为高精度资料与高品质资料并非等同,进而提出连续正交地面磁测观测技术。指出连续的磁力观测能够增大信息密度,避免因抽样引起品质降低;正交观测可以较好地控制垂直地质构造走向或称顺测线方向有意义的局部异常,消除由于测量原因导致的顺测线干扰,同时通过交点平差可提高观测精度。利用剖面与平面数据的抽样与统计证实了方法的有效性,并引用一个失败的例子说明所提出方法的必要性。认为现阶段开展连续正交地面磁测已具备了仪器与技术基础,具有可行性。Good-quality information fails to be obtained by using high-precision magnetic survey in petroleum exploration. The authors analyze the cause and think that high-precision information is different from high-quality information, and then propose the technique of continuous quadrature ground magnetic survey. This technique can augment information density and avoid the reduction of quality due to sampling. It can control the significant local interference perpendicular to the trend line of geologic structure or along the profile, eliminate interference along the profile caused by surveying. In addition, the survey precision can be raised by intersection balancing. In this paper, the effectiveness of the method is verified by the intuitionistic characteristics of the profile, sampling of the areal data and statistic parameters, and a failure example is cited to account for the necessity of using the method. The authors think that a instrumental and technical basis is available for carrying out the continuous quadrature ground magnetic survey in the current stage; so it is economic and feasible.

关 键 词：连续正交地面磁测方法 石油勘探 仪器精度与分辨率 抽样 同步GPS测量 

分 类 号：P631.221[天文地球—地质矿产勘探] P618.13[天文地球—地质学]