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双侧向测井读数受泥浆侵入影响,已为人所共知。为了消除这种影响,以求出地层真电阻率,过去主要从以下两个方面做工作:(1)建立各种条件下的解释图版;(2)模仿感应测井几何因子理论,建立侧向测井的近似几何因子理论。前一种方法需要制作繁多的图版,后一种方法虽然简单,但不能适应复杂的地层条件。还因为这两种方法都要用到侵入带电阻率R_i(或冲洗带电阻率R_x。)资料,所以它们的推广应用受到限制。《测井技术》1983年第6期发表的“双侧向测井侵入校正新方法”一文(以下简称“新方法”文),探讨了只用深、浅双侧向视电阻率求解地层真电阻率的方法,并提出了双侧向测井侵入校正的新公式:
Bilateral lateral well readings are known to have been affected by mud invasion. In order to get rid of this kind of influence, in order to find out the true resistivity of the strata, in the past, the following two work mainly from the following aspects: (1) The establishment of the interpretation of various conditions plate; (2) Simulation of induction logging geometry factor theory, the establishment of lateral Approximate Geometry Theory of Well Logging. The former method requires a large number of plates to be produced. Although the latter method is simple, it can not adapt to complicated formation conditions. But also because of the use of both intrusive zone resistivity R_i (or wash zone resistivity R_x.) Data, so their application is limited. The article “New Method of Bilateral Logging Invasion Correction” published in “Logging Technology”, No.6, 1983, discusses the method of solving deep strata Resistivity method and proposed a new formula for double-lateral logging intrusion correction: