石油与天然气地质 ›› 2006, Vol. 27 ›› Issue (5): 675-681.doi: 10.11743/ogg20060513

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浅议油气化探的干扰因素

邓国荣   

  1. 中国石油化工股份有限公司,石油勘探开发研究院,合肥石油化探研究所,安徽,合肥,230022
  • 收稿日期:2006-03-10 出版日期:2006-10-25 发布日期:2012-01-16
  • 基金项目:

    中国石油化工股份有限公司科技项目(P00012)

Interfering factors in oil and gas geochemical exploration

Deng Guorong   

  1. Hefei Institute of Petroleum Geochemical Exploration, Petroleum Exploration & Production Research Institute, SINOPEC, Heifei, Anhui 230022
  • Received:2006-03-10 Online:2006-10-25 Published:2012-01-16

PDF (PC)

485

被引次数

17

摘要：

借鉴物探有关干扰的表述,建立了油气化探干扰的概念。根据油气化探所依据的烃类垂向微运移理论和工作原理,详细阐明了油气化探干扰的内涵。将干扰源分为同生作用、生物化学生气作用、介质性质差异、人文污染等4种基本类型。前三者是主要的干扰因素,人文可能的污染局限于个别样点。通过探例和模拟实验,对干扰程度进行了分析。针对油气化探不同工作环节,提出了抑制干扰的相应措施,包括选择适当的方法组合、对介质差异性进行标准化处理、采取精细的异常分离技术、异常判识。根据异常和背景的关系,指出干扰的普遍性是针对背景而言,出现在任何测区;而实际构成干扰是针对异常而言,其存在是有限的测区,并且可以通过适当办法使干扰得到相当程度的抑制。

关键词: 干扰因素, 干扰源, 干扰抑制, 油气化探

Abstract:

Using the understanding of interference in geophysical exploration for reference,the concept of interference in oil & gas geochemical exploration is proposed and also expounded with the theory of vertical micromigration of hydrocarbon and the working principle of geochemical exploration.There are four basic types of interference sources in oil and gas geochemical exploration: syngenetic process,biochemical gas effect,sample quality difference,and pollution from human activities.The first three types are the main interfering factors; while the last one maybe limited to some individual sampling spots.An analysis is carried out to evaluate the degree of interference based on the study of field exploration cases and results of simulation test.Corresponding measures are proposed to suppress interference in different stages of geochemical exploration,including selection of proper method combination,standardization of the media difference,and accurate anomaly separation and identification.The relationship between anomaly and background shows that the interference is universal in terms of background can occur in any survey areas,while the real interference in terms of anomaly just exists in limited survey areas,and can be suppressed to some extent with proper methods.

Key words: interfering factor, interference source, interference suppress, oil and gas geochemical exploration

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