关键词: 测井评价, 盐水泥浆, 地层电阻率, 含水饱和度

Abstract: Based on the high temperature and high pressure lab measurements,the numerical simulations and the general analysis ofthe well logs of the different kinds of drilling muds,this article considers the very deep invasion of the conductive salty mud to bethe main reason of the low resistive hydrocarbon-bearing formations in Hainan Zone,Liaohe.For the local geological features,athree-accuracy controlled hybrid inversion technique of the Dual Lateral Log is put forward to calculate the true formation resistivity R_t,and the invasion diameter D_i.With the core analytical data and the well logs,the mathematical models of porosity,shalevolume content,irreducible water saturation and water saturation as well as the criteria of the hydrocarbon bed or water bed areestablished.The corresponding well logging evaluation software ninv and paracom are developed.The technique is successfullyused to process 11 well logs of this area and good geological results are achieved.

Key words: well logging evaluation, salty mud, formation resistivity, water saturation