东辛油田H断块沙二上段低阻油层影响因素分析

东辛油田H断块沙二上段发育的低阻油层受多种因素影响。研究表明，这些影响因素可归结为泥质的影响、粒度的影响、孔隙结构的影响、高矿化度的影响、导电性矿物的影响及润湿性的影响，其中高矿化度和高束缚水饱和度是造成H断块油层低电阻率的主要因素；粘土矿物的含量和分布形式、导电矿物的存在和泥质的附加导电能力是造成研究区油层低电阻率的次要因素，对储层电阻率的影响不大。

Influence factors analysis for low resistivity oil layers of the upside No. 2 Shahejie Formation in H Fault block Dongxin Oilfield

Low resistivity oil layers developed from H Fault Block Dongxin Oilfield suffer manifold factors influence, it is indicated that these factors can be boiled down to mud influence, granularity influence, small opening structure influence. high degree of mineralization influence, electrical conductivity mineral influence, thereinto the high degree of mineralization influence ancl high combined water saturation act as the main factors; the content and distributing format of clay mineral, the exist of conductive mineral and append-conducting power of mud act as the subordinate factors for low resistivity oil layers. which affects little for the rock electrical reststivity.