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非地震综合物化探技术应用及效果

The applications and effects of comprehensive non-seismic geophysical and geochemical exploration techniques

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【作者】 贾进斗何展翔孔繁恕

【Author】 Jia Jindou; He Zhanxiang and Kong Fanshu. .Jia Jindou( The 5th Geologlcal Survey invision subordinate to Bureau of Geophysical Prospecting, P.O. Box 1,Gucheng,Dingxing County,Hebei Province,072656)OGP,1998, 33(5): 625-631

【机构】 北京大学地质系石油地球物理勘探局第五地质调查处

【摘要】 非地震综合物化探技术,是根据不同的勘探目的和探区地球物理条件,有选择地使用多种物探技术进行联合勘探、综合解释。目前采用的主要勘探方法有重力、磁力、电法、化探等。随着野外采集质量的提高及计算技术的不断进步,突破了单一资料解释的限制,开展了物化探资料综合解释的新技术。它在很大程度上降低了单一重、磁、电异常的多解性,提高了解释成果的准确性。非地震综合处理解释系统的应用,使得重、磁、电资料的联合解释成为现实。勘探实例表明,重、磁、电、化勘探综合应用技术在盆地早期勘探阶段,能有效地解决盆地拗隆分布、区域构造、基底结构等问题,同时可结合少量的地震、钻井及地质资料对各构造单元作出早期含油远景评价;在目标勘探方面,如解决碳酸盐岩地区找礁、圈定火成岩体、基底岩相预测、盖层岩性、山前逆掩断层等地质问题也有较好的效果。

【Abstract】 In accordance with different exploration targets and geophysical conditions in aprospecting area, non--seismic geophysical and geochemical exploration techniquesare used selectively to carry out combined exploration and comprehensive interpretation. The main prospecting techniques used at present time are gravity, magnetic, electric and geochemical surveys. Because of the improvement of field data acquisition quality and the advancement of computer technique, the limitation of single data interpretation has been broken through, and new comprehensive interpretation technique for geophysical and geochemical data has been used, so that it hasreduced the multisolution of single gravity (or magnetic and electric) data and improved the accuracy of interpretation result.The application of non--seismic comprehensive processing and interpretationsystem has made the combined interpretation of gravity, magnetic and electric datacome true. The examples of exploration show that the combined application technique of gravity, magnetic, electric and geochemical exploration may effectively resolve the tough problems such as the depression--uplift distribution, regional geology structure, and basement structure of a basin at the early stage of explorationland it makes oil--bearing potential evaluation of structural units in combination withseismic, drilling and geological data. In target exploration, good results have beenachieved in the following aspects: reef exploration in carbonate rock region, igneous rock delineation, basement lithofacies prediction, overlying strata lithologyand mountain front overthrust.

  • 【文献出处】 石油地球物理勘探 ,OIL GEOPHYSICAL PROSPECTING , 编辑部邮箱 ,1998年05期
  • 【分类号】P618.130.8
  • 【被引频次】9
  • 【下载频次】144
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